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Not supported with pagination yet | How long does it take to paint the walls in a bedroom? | [
"5 seconds",
"5 hours"
] | 1 | Select the better estimate. | closed choice | grade2 | natural science | units-and-measurement | Units and measurement | Choose units of time | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that the bus leaves in 7. You might be thinking, 7 what? Does the bus leave in 7 minutes? 7 seconds?
The number 7 on its own does not give you much information about when the... | The better estimate for how long it takes to paint the walls in a bedroom is 5 hours.
5 seconds is too fast. |
Which of these oceans does the prime meridian intersect? | [
"the Arctic Ocean",
"the Pacific Ocean",
"the Indian Ocean"
] | 0 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects the Arctic Ocean. It does not intersect the Indian Ocean or the Pacific Ocean. | ||
Which of the following could Dalton's test show? | [
"how well the weather station would work when it was windy",
"if the weather station would work when the temperature was 50°C"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Not supported with pagination yet | Read the following excerpt from a student essay. How can the writer best improve his or her grammar and mechanics?
Everyone agree that recess is important for children in elementary school, but what about middle school students? I believe that students in middle school needs time to relax and have fun during the school... | [
"by fixing subject-verb agreement errors",
"by adding missing commas"
] | 0 | closed choice | grade10 | language science | writing-strategies | Editing and revising | Suggest appropriate revisions | During peer review, you read and respond to a fellow student's writing. While there are many methods and strategies that you can use for reviewing a text, it is generally helpful to frame your suggestions in concrete and constructive ways and to consider the following areas for revision:
Ideas and development: Does the... | The writer could best improve his or her grammar and mechanics by fixing subject-verb agreement errors.
For example, the writer could change the first underlined verb to agree with the indefinite pronoun everyone and the others to agree with their simple subjects.
Everyone agree that recess is important for children in... | |
What is the capital of New Mexico? | [
"Portland",
"Jefferson City",
"Albuquerque",
"Santa Fe"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Santa Fe is the capital of New Mexico. | |||
Select the mammal below. | [
"kangaroo",
"red salamander"
] | 0 | Mammals have hair or fur and feed their young milk. A rabbit is an example of a mammal. | closed choice | grade3 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A kangaroo is a mammal. It has fur and feeds its young milk.
Kangaroos hop to move around. They use their large tails for balance while hopping.
A red salamander is an amphibian. It has moist skin and begins its life in water.
Red salamanders do not have lungs. They breathe through their skin! | |
Which of these oceans does the prime meridian intersect? | [
"the Indian Ocean",
"the Pacific Ocean",
"the Atlantic Ocean"
] | 2 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects the Atlantic Ocean. It does not intersect the Pacific Ocean or the Indian Ocean. | ||
Not supported with pagination yet | Suppose Bridgette decides to see the anacondas. Which result would be a cost? | [
"Bridgette will give up the chance to see the lemurs. She would have enjoyed seeing them more than the anacondas.",
"Bridgette will save some time. The anacondas are close by, but she would have had to walk to the the other side of the zoo to see the lemurs."
] | 0 | Bridgette is deciding whether to see the lemurs or the anacondas at the zoo. She wants to see lots of animals, but the zoo is closing soon. | closed choice | grade5 | social science | economics | Basic economic principles | Costs and benefits | Before you decide to do something, it is often helpful to list costs and benefits.
Costs are what you give up or spend when you decide to do something. Costs involve giving up things that you want or need.
Benefits are what you gain or save when you decide to do something. Benefits involve gaining something that you wa... | This result is a cost. It involves giving up or spending something that Bridgette wants or needs:
Bridgette will give up the chance to see the lemurs. She would have enjoyed seeing them more than the anacondas. |
Which better describes the Masoala National Park ecosystem? | [
"It has cold winters. It also has soil that is rich in nutrients.",
"It has year-round warm temperatures. It also has many different types of organisms."
] | 1 | Figure: Masoala National Park.
Masoala National Park is a tropical rain forest ecosystem in northeastern Madagascar. | closed choice | grade4 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A tropical rain forest is a type of ecosystem. Tropical rain forests have the following features: year-round rain and warm temperatures, soil that is poor in nutrients, and many different types of organisms. So, Masoala National Park has year-round warm temperatures. It also has many different types of organisms. | |
Not supported with pagination yet | What does the allusion in this text suggest?
With the gutters clogged and water rising in the streets, Lola, who was watching the storm from her window, commented, "We're going to need an ark to get out of here." | [
"Lola thinks the storm will cause major flooding.",
"Lola wants to protect her possessions."
] | 0 | closed choice | grade10 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
An allusion is a brief reference to something or someone well known, often from history or literature.
"I'd better get home before I turn into a pumpkin!" Lila remarked. | The text uses an allusion, a brief reference to someone or something well known.
The allusion to an ark suggests that Lola thinks the storm will cause major flooding. In the Bible, it rains for forty days and forty nights; Noah, his family, and animals of every species survive the great flood in an ark that he builds. | |
Not supported with pagination yet | How long is a spider's leg? | [
"18 meters",
"18 centimeters",
"18 kilometers",
"18 millimeters"
] | 3 | Select the best estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Choose metric units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using metric units, length can be written with units of millimeters, centimeters, meters, or kilometers. One meter contains 100 centimeters or 1,000 millimeters. So, 1 meter is lar... | The best estimate for the length of a spider's leg is 18 millimeters.
18 centimeters, 18 meters, and 18 kilometers are all too long. |
What is the capital of North Carolina? | [
"Baton Rouge",
"Charlotte",
"Nashville",
"Raleigh"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Raleigh is the capital of North Carolina. | |||
Which is this organism's common name? | [
"Cathartes aura",
"turkey vulture"
] | 1 | This organism is Cathartes aura. It is also called a turkey vulture. | closed choice | grade7 | natural science | biology | Classification and scientific names | Identify common and scientific names | An organism's common name is the name that people normally call the organism. Common names often contain words you know.
An organism's scientific name is the name scientists use to identify the organism. Scientific names often contain words that are not used in everyday English.
Scientific names are written in italics,... | Cathartes aura is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Cathartes aura is the organism's scientific name. So, you know that turkey vulture is the common name. | |
Which property do these two objects have in common? | [
"blue",
"bouncy"
] | 0 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells.
Different objects can have the same properties. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
Blue is a color.
This color is blue. Both objects are blue.
A bouncy object will bounce back from the floor if you drop it. The track suit is not bouncy.
The property that both objects have in common is blue. | |
Which of these states is farthest north? | [
"Arkansas",
"Kentucky",
"Arizona",
"Alabama"
] | 1 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Kentucky is farthest north. | ||
Not supported with pagination yet | What is the volume of a kitchen sink? | [
"11 fluid ounces",
"11 cups",
"11 gallons"
] | 2 | Select the best estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose customary units of volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Volume is a measurement of how much space something takes up.
There are many different units of volume. When you are using customary units, volume may be written in units of fluid ounces, cups,... | The best estimate for the volume of a kitchen sink is 11 gallons.
11 fluid ounces and 11 cups are both too little. |
What can Haley and Irma trade to each get what they want? | [
"Haley can trade her tomatoes for Irma's broccoli.",
"Irma can trade her broccoli for Haley's oranges.",
"Irma can trade her almonds for Haley's tomatoes.",
"Haley can trade her tomatoes for Irma's carrots."
] | 0 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Haley and Irma open their lunch boxes in the school cafeteria. Neither Haley nor Irma got everything that they wanted. The table ... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Haley wants broccoli. Irma wants tomatoes. They can trade tomatoes for broccoli to both get what they want. Trading other things would not help both people get more items they want. | ||
Not supported with pagination yet | Which logical fallacy is used in the text?
Our study looked at people who were successful, as defined by their level of income. Our findings show that successful people consistently make more money than unsuccessful people. | [
"false causation: the assumption that because two things happened together, one caused the other",
"circular reasoning: an argument that supports a claim with the claim itself",
"ad hominem: an attack against the person making the argument, rather than the argument itself"
] | 1 | closed choice | grade11 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that successful people make more money than unsuccessful people. However, the study defines success by income level. So, the "evidence" is just a restatement of the claim itself. This illustrates a type of logical fallacy known as circular reasoning. | |
Which country is highlighted? | [
"New Zealand",
"Tonga",
"Samoa",
"Tuvalu"
] | 1 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tonga. | |||
Not supported with pagination yet | Read the following excerpt from a student essay. How can the writer best improve his or her sentence fluency?
Getting involved in high school sports is a great way for students to build a variety of important skills. When students play on teams, for example, they learn the importance of teamwork. Teamwork is developed ... | [
"by simplifying the last sentence",
"by using longer sentences",
"by adding a transition between two sentences"
] | 2 | closed choice | grade11 | language science | writing-strategies | Editing and revising | Suggest appropriate revisions | During peer review, you read and respond to a fellow student's writing. While there are many methods and strategies that you can use for reviewing a text, it is generally helpful to frame your suggestions in concrete and constructive ways and to consider the following areas for revision:
Ideas and development: Does the... | The writer could best improve his or her sentence fluency by adding a transition between two sentences.
For example, the writer could add a sentence such as Improved time management is another valuable benefit of playing sports before the underlined sentence.
Getting involved in high school sports is a great way for st... | |
Not supported with pagination yet | What do these two changes have in common?
crushing a mineral into powder
breaking a ceramic plate | [
"Both are only physical changes.",
"Both are caused by cooling.",
"Both are caused by heating.",
"Both are chemical changes."
] | 0 | closed choice | grade8 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
Crushing a mineral into powder is a physical change. The mineral breaks into tiny pieces. But it is still made of the same type of matter.
Breaking a ceramic plate is a physical change. The plate gets broken into pieces. But each piece is still made of the same type of matter.
Step 2: L... | |
Select the organism in the same species as the red-eyed tree frog. | [
"Bufo bufo",
"Lithobates catesbeianus",
"Agalychnis callidryas"
] | 2 | This organism is a red-eyed tree frog. Its scientific name is Agalychnis callidryas. | closed choice | grade5 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A red-eyed tree frog's scientific name is Agalychnis callidryas.
Bufo bufo does not have the same scientific name as a red-eyed tree frog. So, Agalychnis callidryas and Bufo bufo are not in the same species.
Lithobates catesbeianus does not have the same scientific name as a red-eyed tree frog. So, Agalychnis callidrya... | |
What is the capital of Nevada? | [
"Carson City",
"Phoenix",
"Chicago",
"Sacramento"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Carson City is the capital of Nevada. | |||
Not supported with pagination yet | Select the temperature shown by this thermometer. | [
"45°F",
"65°F",
"95°F"
] | 1 | closed choice | grade3 | natural science | units-and-measurement | Weather and climate | Read a thermometer | A thermometer is a tool that measures temperature. Temperature can be measured in degrees. The symbol for degrees is °.
Some thermometers measure temperature in degrees Fahrenheit (°F). Fahrenheit is one scale used to measure temperature.
This is a tube thermometer. It has a tube filled with a red liquid.
There is a Fa... | Find the top of the red liquid.
Now look at the scale to the right. The top of the red liquid is halfway between 60 and 70. So, the temperature is 65°F. | |
Not supported with pagination yet | Based on this information, what is Briar's genotype for the fur color gene? | [
"ff",
"brown fur"
] | 0 | In a group of rabbits, some individuals have black fur and others have brown fur. In this group, the gene for the fur color trait has two alleles. The allele F is for black fur, and the allele f is for brown fur.
Briar, a rabbit from this group, has brown fur. Briar has two alleles for brown fur. | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: genotype and phenotype | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | An organism's genotype for a gene is its combination of alleles for that gene. Briar has two alleles for brown fur (f). So, Briar's genotype for the fur color gene is ff. |
Not supported with pagination yet | Which is a sentence fragment? | [
"The car needed gas Dad went to the gas station.",
"Reads about many kinds of plants and animals."
] | 1 | closed choice | grade3 | language science | writing-strategies | Sentences, fragments, and run-ons | Is it a complete sentence, a fragment, or a run-on? | A sentence is a group of words that forms a complete thought. It has both a subject and a verb.
My friends walk along the path.
A sentence fragment is a group of words that does not express a complete thought. It is usually missing a subject or a verb.
Knows the answer.
This is a sentence fragment. It is missing a subj... | Reads about many kinds of plants and animals is a sentence fragment. It is missing a subject. | |
Which continent is highlighted? | [
"Asia",
"Antarctica",
"North America",
"Africa"
] | 0 | closed choice | grade8 | social science | geography | Physical Geography | Oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is Asia. | ||
Not supported with pagination yet | Which correctly shows the title of a poem? | [
"\"Stopping by Woods on a Snowy Evening\"",
"Stopping by Woods on a Snowy Evening"
] | 0 | closed choice | grade6 | language science | punctuation | Formatting | Formatting titles | The title of a book, movie, play, TV show, magazine, or newspaper should be in italics. If you write it by hand, it can be underlined instead.
A Midsummer Night's Dream
The title of a poem, song, article, or short story should be in quotation marks.
"You Are My Sunshine" | A poem should be in quotation marks.
The correct title is "Stopping by Woods on a Snowy Evening." | |
Not supported with pagination yet | What is the temperature of the air on a warm, sunny day? | [
"25°C",
"25°F"
] | 0 | Select the better estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Estimate temperatures | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Temperature can be written with units of degrees Fahrenheit (°F) or Celsius (°C). Use the list below to compare the two units.
212°F | Water boils | 100°C
98.6°F | Body temperature | 37°C
68°F ... | The better estimate for the temperature of the air on a warm, sunny day is 25°C.
25°F is too cold. |
Which of these states is farthest east? | [
"Oregon",
"Kansas",
"Montana",
"New Mexico"
] | 1 | closed choice | grade4 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. Kansas is farthest east. | ||
Not supported with pagination yet | Would you find the word nation on a dictionary page with the following guide words?
near - notify | [
"yes",
"no"
] | 1 | yes or no | grade6 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since nation is not between the guide words near - notify, it would not be found on that page. | |
Not supported with pagination yet | What does the verbal irony in this text suggest?
"This is the best day of my life," Mr. Lopez mumbled after his car broke down on the way to an important job interview. | [
"Mr. Lopez liked fixing cars.",
"Mr. Lopez was having a bad day."
] | 1 | closed choice | grade8 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic.
Olivia seems thrilled that her car keeps breaking dow... | The text uses verbal irony, which involves saying one thing but implying something very different.
The best day of my life ironically suggests that Mr. Lopez was having a bad day. He was having the opposite of a good day because his car broke down when he needed to be on time. | |
What is the capital of North Dakota? | [
"Bismarck",
"Frankfort",
"Pierre",
"Fargo"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Bismarck is the capital of North Dakota. | |||
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
magic - money | [
"middle",
"museum"
] | 0 | closed choice | grade5 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since middle is between the guide words magic - money, it would be found on that page. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is weaker in Pair 2.",
"The magnetic force is weaker in Pair 1."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other. | Distance affects the strength of the magnetic force. But the distance between the magnets in Pair 1 and in Pair 2 is the same.
So, the strength of the magnetic force is the same in both pairs. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
I had to speak out against the proposed noise pollution ordinance. Citizens would obviously prefer a thriving city over a silent, stagnant one. | [
"circular reasoning: an argument that supports a claim with the claim itself",
"bandwagon fallacy: the assumption that the popular choice is automatically correct",
"false dichotomy: an argument that presents only two choices when more options exist"
] | 2 | closed choice | grade11 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that either a city allows noise pollution or it is silent and stagnant. However, it is possible for a city to reduce noise pollution and still thrive. This illustrates a type of logical fallacy known as a false dichotomy. | |
Which of the following could Zane's test show? | [
"how much athletes would sweat in the fabric",
"how long it would take the sample fabric to dry after it absorbed one drop of water",
"if the sample fabric would absorb one drop of water in less than one second"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Not supported with pagination yet | Select the one animal that has all of the mammal traits listed above. | [
"Canadian lynx have furry, padded feet that help them walk on snow. Canadian lynx feed their offspring milk.",
"Common snapping turtles hatch from eggs with shells. They have powerful beaks. When a snapping turtle is threatened by a predator, it snaps its beak! Snapping turtles have scaly, waterproof skin."
] | 0 | Mammals are a group of animals with similar traits. The following traits can be used to identify mammals:
They feed their offspring milk.
They have fur or hair. Observe the animals and read the descriptions. | closed choice | grade5 | natural science | biology | Classification | Use evidence to classify mammals, birds, fish, reptiles, and amphibians | Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live.
How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, sc... | To decide if an animal is part of a group, look at the traits of the group.
Mammals have the following traits:
They feed their offspring milk.
They have fur or hair.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A common snapping turtle has the followin... |
Not supported with pagination yet | Which tense does the sentence use?
Bob stirred the sauce on the stove. | [
"present tense",
"past tense",
"future tense"
] | 1 | closed choice | grade4 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in past tense. You can tell because it uses a past-tense verb, stirred. The verb ends in -ed and tells you about something that has already happened. | |
Not supported with pagination yet | Select the animal that has a backbone. | [
"stork",
"bumble bee"
] | 0 | Hint: Mammals, birds, fish, reptiles, and amphibians all have backbones. | closed choice | grade2 | natural science | biology | Classification | Identify animals with and without backbones | Some animals have a backbone. The backbone is made of many bones in an animal's back. An animal's backbone helps connect the different parts of its body. In the drawings below, each animal's backbone is colored orange.
Other animals do not have a backbone. In fact, these animals don't have any bones! Some animals witho... | A stork is a bird. Like other birds, a stork has a backbone.
A bumble bee is an insect. Like other insects, a bumble bee does not have a backbone. It has a hard outer cover. |
Not supported with pagination yet | Which sentence states a fact? | [
"Zebras look funny when they chew grass.",
"A zebra's teeth keep growing as long as the zebra lives."
] | 1 | closed choice | grade3 | language science | writing-strategies | Opinion writing | Distinguish facts from opinions | A fact is something that can be proved to be true.
The month of July has more days than the month of June.
This is a fact. It can be proved by looking at a calendar and counting the number of days in each month.
An opinion is something that a person believes, thinks, or feels. An opinion cannot be proved true.
July is ... | The first sentence states a fact.
A zebra's teeth keep growing as long as the zebra lives.
It can be proved by looking up information about zebras.
The second sentence states an opinion.
Zebras look funny when they chew grass.
Funny shows what a person believes, thinks, or feels. Another person might have a different o... | |
Which of the following could Adam's test show? | [
"how long it would take the sample fabric to dry after it absorbed one drop of water",
"how much athletes would sweat in the fabric",
"if the sample fabric would absorb one drop of water in less than one second"
] | 0 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade7 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
What is the capital of Indiana? | [
"Columbus",
"Charlotte",
"Fort Wayne",
"Indianapolis"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Indianapolis is the capital of Indiana. | |||
What is the name of the colony shown? | [
"Wisconsin",
"West Virginia",
"Virginia",
"New Hampshire"
] | 2 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Virginia.
The Virginia Colony included land that would later become part of the state of West Virginia. West Virginia was never its own colony. | |||
Identify the question that Cody's experiment can best answer. | [
"Do cardinals visit feeders containing sunflower seeds more often than feeders containing flax seeds?",
"Do cardinals eat more seeds per visit from feeders containing sunflower seeds compared to feeders containing flax seeds?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Cody set up five pairs of platform bird feeders around his yard. He filled one feeder in each pair with sunflower seeds and the other feeder with flax seeds. For one week, Cody watched cardinals visiting the feeders dur... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Not supported with pagination yet | Which is a run-on sentence? | [
"Jamal's favorite season is fall it is cool outside.",
"Wanda spilled apple juice on the carpet."
] | 0 | closed choice | grade3 | language science | writing-strategies | Sentences, fragments, and run-ons | Is it a complete sentence or a run-on? | A sentence is a group of words that forms a complete thought. It has both a subject and a verb.
My friends walk along the path.
A run-on sentence is made up of two sentences that are joined without end punctuation or with just a comma.
I knocked on the door it opened.
It started raining, we ran inside.
To fix a run-on ... | Jamal's favorite season is fall it is cool outside is a run-on sentence. It has two sentences that are joined without end punctuation: Jamal's favorite season is fall and It is cool outside. | |
What is the capital of New Mexico? | [
"Albuquerque",
"Santa Fe",
"Seattle",
"Sacramento"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Santa Fe is the capital of New Mexico. | |||
During this time, thermal energy was transferred from () to (). | [
"each battery . . . the surroundings",
"the surroundings . . . each battery"
] | 0 | Two friends bought phones that cost different amounts but had identical batteries. After using the phones for a while, both friends had to turn them off to let the batteries cool. This table shows how the temperature of each battery changed over 5minutes. | closed choice | grade7 | natural science | physics | Thermal energy | Compare thermal energy transfers | A change in an object's temperature indicates a change in the object's thermal energy:
An increase in temperature shows that the object's thermal energy increased. So, thermal energy was transferred into the object from its surroundings.
A decrease in temperature shows that the object's thermal energy decreased. So, th... | The temperature of each battery decreased, which means that the thermal energy of each battery decreased. So, thermal energy was transferred from each battery to the surroundings. | |
Which rhetorical appeal is primarily used in this ad? | [
"ethos (character)",
"pathos (emotion)",
"logos (reason)"
] | 0 | closed choice | grade12 | language science | writing-strategies | Persuasive strategies | Identify appeals to ethos, pathos, and logos in advertisements | The purpose of an advertisement is to persuade people to do something. To accomplish this purpose, advertisements use three types of persuasive strategies, or appeals.
Appeals to ethos, or character, show the writer or speaker as trustworthy, authoritative, or sharing important values with the audience. An ad that appe... | The ad appeals to ethos, or character, by emphasizing that the brand shares their customers' values. | ||
Not supported with pagination yet | Based on this information, what is this ornamental gourd plant's phenotype for the fruit color trait? | [
"ff",
"green fruit"
] | 1 | In a group of ornamental gourd plants, some individuals have yellow fruit and others have green fruit. In this group, the gene for the fruit color trait has two alleles. The allele F is for yellow fruit, and the allele f is for green fruit.
A certain ornamental gourd plant from this group has green fruit. This plant ha... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: genotype and phenotype | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | An organism's phenotype for a trait is its observable version of that trait. The ornamental gourd plant's observable version of the fruit color trait is green fruit. So, the plant's phenotype for the fruit color trait is green fruit. |
Which term matches the picture? | [
"basket star",
"brittle star"
] | 0 | Read the text.
The Ophiuroidea are marine animals that are closely related to true sea stars, or the Asteroidea. Ophiuroids are divided into two groups: brittle stars and basket stars.
Brittle stars generally have five arms joined to a central body disk. Unlike those of true sea stars, the central body disks of brittle... | closed choice | grade6 | language science | vocabulary | Context clues | Determine the meaning of domain-specific words with pictures | The arms of a basket star split into many shorter arms, like branches and twigs on a tree. | ||
Which country is highlighted? | [
"Solomon Islands",
"the Federated States of Micronesia",
"Papua New Guinea",
"New Zealand"
] | 2 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Papua New Guinea.
Why does Papua New Guinea share its island with another country?
Papua New Guinea takes up the eastern half of the island of New Guinea. The western half is part of Indonesia, an Asian country.
Beginning in the 17 th century, several countries took control of different parts of the isl... | |||
Which trait did Diplomystus have? Select the trait you can observe on the fossil. | [
"a small fin on its back",
"reddish-orange scales on its body"
] | 0 | This picture shows a fossil of an ancient fish called Diplomystus. Diplomystus lived in ancient lakes and ate smaller fish. | closed choice | grade4 | natural science | earth-science | Fossils | Compare fossils to modern organisms | The way an organism looks or acts is called a trait. Scientists use fossils to learn more about the traits of ancient organisms.
Fossils can preserve the remains of body parts and activities. A fossil of a body part, such as a tail or a wing, can tell you what an organism looked like. A fossil of an organism's activiti... | ||
Not supported with pagination yet | Which orange has less thermal energy? | [
"the colder orange",
"the hotter orange"
] | 0 | Two oranges are identical except for their temperatures. | closed choice | grade6 | natural science | physics | Thermal energy | How are temperature and mass related to thermal energy? | Matter is made of tiny particles called atoms. Atoms are always moving.
The energy of moving atoms is called thermal energy. The total amount of thermal energy in matter depends on three things: the type of matter, the amount of matter, and how fast the atoms are moving.
Temperature measures how hot or cold matter is. ... | The two oranges are made of the same material and have the same mass. So, the colder orange has less thermal energy. |
What is the capital of Missouri? | [
"Kansas City",
"Bismarck",
"Jefferson City",
"Billings"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Jefferson City is the capital of Missouri. | |||
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 2."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade8 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magnitude of the magnetic force between them is greater.
There is a smaller distance between the magnets in Pair 2 than in Pair 1. So, the magnitude of the magnetic force is greater in Pair 2 than in Pair 1. | |
Not supported with pagination yet | What is the text's most likely purpose? | [
"to persuade",
"to inform",
"to entertain"
] | 0 | Read the text below.
Don't get caught in the rain! Buy two umbrellas and get a third for free! You'll love our new colors and patterns. | closed choice | grade4 | language science | writing-strategies | Author's purpose | Identify the purpose of a text | Authors write texts for different purposes, or reasons. Common purposes for writing are to persuade, to inform, or to entertain readers.
Authors persuade by convincing readers to believe or do something.
An advertisement tries to convince readers to buy a product.
A political poster tries to convince readers to vote fo... | The text is an advertisement. Its purpose is to persuade. |
Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 1 | Two magnets are placed as shown. | closed choice | grade4 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles: north and south.
Here are some examples of magnets. The no... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The south pole of one magnet is closest to the south pole of the other magnet. Like poles repel. So, these magnets will repel each other. | |
Which is this organism's scientific name? | [
"crown-of-thorns sea star",
"Acanthaster planci"
] | 1 | This organism is Acanthaster planci. It is also called a crown-of-thorns sea star. | closed choice | grade8 | natural science | biology | Classification and scientific names | Identify common and scientific names | An organism's common name is the name that people normally call the organism. Common names often contain words you know.
An organism's scientific name is the name scientists use to identify the organism. Scientific names often contain words that are not used in everyday English.
Scientific names are written in italics,... | Acanthaster planci is written in italics. The first word is capitalized, and the second word is not.
So, Acanthaster planci is the scientific name. | |
Which property do these four objects have in common? | [
"fuzzy",
"smooth",
"soft"
] | 2 | Select the best answer. | closed choice | grade5 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
A soft object changes shape when pressed or squeezed. All four objects are soft.
A fuzzy object is covered in soft hair. The stuffed dice are fuzzy, but the apron and the ball of wet clay are not.
A smooth object is not scratchy or rough. The ball of... | |
Not supported with pagination yet | How long does it take to tie your shoes? | [
"25 hours",
"25 seconds"
] | 1 | Select the better estimate. | closed choice | grade2 | natural science | units-and-measurement | Units and measurement | Choose units of time | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that the bus leaves in 7. You might be thinking, 7 what? Does the bus leave in 7 minutes? 7 seconds?
The number 7 on its own does not give you much information about when the... | The better estimate for how long it takes to tie your shoes is 25 seconds.
25 hours is too slow. |
Not supported with pagination yet | Based on this information, what is Zuri's phenotype for the coat pattern trait? | [
"a spotted coat",
"a black coat"
] | 1 | In a group of leopards, some individuals have a spotted coat and others have a black coat. In this group, the gene for the coat pattern trait has two alleles. The allele for a black coat (a) is recessive to the allele for a spotted coat (A).
Zuri is a leopard from this group. Zuri has the homozygous genotype aa for the... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | Zuri's genotype for the coat pattern gene is aa. Zuri's genotype of aa has only a alleles. The a allele is for a black coat. So, Zuri's phenotype for the coat pattern trait must be a black coat.
To check this answer, consider whether Zuri's alleles are dominant or recessive. The allele for a black coat (a) is recessive... |
Not supported with pagination yet | Which logical fallacy is used in the text?
Mr. Castro argues that we need to do more to prevent workplace injuries and fatalities. I doubt that someone so socially awkward would know a thing about office safety. | [
"ad hominem: a personal attack against one's opponent",
"appeal to nature: the assumption that natural things are always good"
] | 0 | closed choice | grade6 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that being socially awkward determines knowledge of workplace safety. This is a personal attack that isn't relevant to Mr. Castro's desire to prevent workplace injuries. This illustrates a type of logical fallacy known as ad hominem. | |
Not supported with pagination yet | Is this a sentence fragment?
A new detective series by J. K. Rowling published under the pseudonym of Robert Galbraith after she completed her seven-volume Harry Potter series. | [
"yes",
"no"
] | 0 | yes or no | grade12 | language science | writing-strategies | Sentences, fragments, and run-ons | Identify sentence fragments | A sentence is a group of words that expresses a complete thought.
The band I'm in has been rehearsing daily because we have a concert in two weeks.
A sentence fragment is a group of words that does not express a complete thought.
Rehearsing daily because we have a concert in two weeks.
This fragment is missing a subjec... | This is a sentence fragment. It does not express a complete thought.
A new detective series by J. K. Rowling published under the pseudonym of Robert Galbraith after she completed her seven-volume Harry Potter series.
Here is one way to fix the sentence fragment:
Author J. K. Rowling released a new detective series publ... | |
What is the probability that a human produced by this cross will not have Thomsen disease? | [
"3/4",
"4/4",
"1/4",
"0/4",
"2/4"
] | 3 | This passage describes the Thomsen disease trait in humans:
Thomsen disease is a condition that causes temporary muscle stiffness. When a human with Thomsen disease first contracts a resting muscle, the muscle is slow to relax and may stay contracted for a while. But after repeated use, the muscle can contract and rela... | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | ||
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | Two magnets are placed as shown. | closed choice | grade4 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles: north and south.
Here are some examples of magnets. The no... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other. | |
Which animal's skin is better adapted to hurt an attacking predator? | [
"porcupine",
"ring-necked pheasant"
] | 0 | Echidnas have sharp spines covering much of their skin. These spines are called quills. The skin of the is adapted to hurt an attacking predator.
Figure: echidna. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the echidna.
The echidna has sharp spines on its skin. Its skin is adapted to hurt an attacking predator. The spines can harm a predator that tries to bite the echidna.
Now look at each animal. Figure out which animal has a similar adaptation.
The porcupine has sharp spines on its skin. Its skin ... | |
Which property do these four objects have in common? | [
"sour",
"opaque",
"hard"
] | 2 | Select the best answer. | closed choice | grade5 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
A lemon has a sour taste. The water pitcher is not sour.
An opaque object does not let light through. The metal nail, the metal bar, and the car bumper are opaque, but the water pitcher is not.
A hard object does not change shape when pressed or sque... | |
Which solution has a higher concentration of yellow particles? | [
"Solution B",
"neither; their concentrations are the same",
"Solution A"
] | 0 | The diagram below is a model of two solutions. Each yellow ball represents one particle of solute. | closed choice | grade7 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the yellow particles represent the solute. To figure out which solution has a higher concentration of yellow particles, look at both the number of yellow particles and the volume of the solvent in each container.
Use the concentration formula to find the number of yellow particles per mill... | |
Not supported with pagination yet | Select the vertebrate. | [
"atlas moth",
"toucan"
] | 1 | Hint: Mammals, birds, fish, reptiles, and amphibians are vertebrates. | closed choice | grade3 | natural science | biology | Classification | Identify vertebrates and invertebrates | Vertebrates and invertebrates are both groups of animals.
A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange.
An invertebrate does not have a backb... | An atlas moth is an insect. Like other insects, an atlas moth is an invertebrate. It does not have a backbone. It has a hard outer cover.
A toucan is a bird. Like other birds, a toucan is a vertebrate. It has a backbone. |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | Two magnets are placed as shown. | closed choice | grade4 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles: north and south.
Here are some examples of magnets. The no... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The north pole of one magnet is closest to the south pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. | |
Not supported with pagination yet | What is the mass of an adult hippopotamus? | [
"2 tons",
"2 ounces",
"2 pounds"
] | 0 | Select the best estimate. | closed choice | grade4 | natural science | units-and-measurement | Units and measurement | Choose customary units of mass | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using customary units, mass may be written with units of ounces, pounds, or ton... | The best estimate for the mass of an adult hippopotamus is 2 tons.
2 ounces and 2 pounds are both too light. |
Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 0 | Figure: Machu Picchu.
Machu Picchu is an ancient city located in Peru. This mountainous area is known for being rainy and cloudy each year from December to March.
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade6 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
Machu Picchu is an ancient city located in Peru. This mountainous area is known for being rainy and cloudy each year from December to March.
The underlined part of the passage tells you about the usual pattern of cloud cover at Machu Picchu. This passage does not describe what the weather is... | |
Which animal's mouth is also adapted for gnawing? | [
"raccoon",
"nutria"
] | 1 | Marmots eat plant matter, such as leaves, stems, and seeds. They eat by biting off small pieces at a time, or gnawing. The 's mouth is adapted for gnawing.
Figure: marmot. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's mouth is one example of an adaptation. Animals' mouths can be adapted in different ways. For example, a large mouth with sharp teeth might help an animal tear ... | Look at the picture of the marmot.
The marmot has large front teeth. Its mouth is adapted for gnawing. The large front teeth can help the marmot break off pieces of food that it can swallow.
Now look at each animal. Figure out which animal has a similar adaptation.
The nutria has large front teeth. Its mouth is adapted... | |
Which of these states is farthest north? | [
"North Carolina",
"Louisiana",
"Colorado",
"Alabama"
] | 2 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Colorado is farthest north. | ||
Not supported with pagination yet | Which logical fallacy is used in the text?
Don't feed the dog any scraps. Next thing you know, you'll be setting a place for the dog at the dinner table. | [
"slippery slope fallacy: the false assumption that a small first step will lead to extreme consequences",
"ad hominem: an attack against the person making the argument, rather than the argument itself",
"false causation: the assumption that because two things happened together, one caused the other"
] | 0 | closed choice | grade11 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that feeding the dog table scraps will lead to the dog being served at the table. However, this isn't necessarily true. This argument offers only one extreme and unlikely outcome. This illustrates a type of logical fallacy known as the slippery slope fallacy. | |
Not supported with pagination yet | Which text uses the word can in its traditional sense? | [
"In an effort to reduce human impact on nature trails, some national parks limit the numbers of hikers per group. Olympic National Park, for instance, maintains that only twelve people can hike in each group.",
"Some parts of the Olympic National Park coastal trail are quite strenuous. The National Park Service e... | 1 | closed choice | grade10 | language science | writing-strategies | Word usage and nuance | Explore words with new or contested usages | Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner.
When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be... | The second text uses can in its traditional sense: to have the ability to.
Some parts of the Olympic National Park coastal trail are quite strenuous. The National Park Service encourages only those hikers who can climb and hike on slippery rocks to make the trek.
The first text uses can in its nontraditional sense: to ... | |
What can Danielle and Akira trade to each get what they want? | [
"Danielle can trade her tomatoes for Akira's sandwich.",
"Akira can trade her almonds for Danielle's tomatoes.",
"Danielle can trade her tomatoes for Akira's broccoli.",
"Akira can trade her broccoli for Danielle's oranges."
] | 2 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Danielle and Akira open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Danielle wan... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Danielle wanted broccoli in her lunch and Akira was hoping for tomatoes. Look at the labeled part of the images.
Danielle has tomatoes. Akira has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want. | ||
Is chalk a mineral? | [
"yes",
"no"
] | 1 | Chalk has the following properties:
solid
naturally occurring
not a pure substance
no fixed crystal structure
not made by organisms | yes or no | grade6 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Properties are used to identify different substances. Minerals have the following properties:
It is a solid.
It is formed in nature.
It is not made by organisms.
It is a pure substance.
It has a fixed crystal structure.
If a substance has all five of these properties, then it is a mineral.
Look closely at the last thre... | Chalk does not have all the properties of a mineral. So, chalk is not a mineral. | |
What is the capital of Kentucky? | [
"Columbia",
"Frankfort",
"Bismarck",
"Denver"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Frankfort is the capital of Kentucky. | |||
Which solution has a higher concentration of pink particles? | [
"Solution A",
"neither; their concentrations are the same",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each pink ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the pink particles represent the solute. To figure out which solution has a higher concentration of pink particles, look at both the number of pink particles and the volume of the solvent in each container.
Use the concentration formula to find the number of pink particles per milliliter.
... | |
Which of these states is farthest east? | [
"Idaho",
"Mississippi",
"California",
"Georgia"
] | 3 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. Georgia is farthest east. | ||
Not supported with pagination yet | Which logical fallacy is used in the text?
Helen's shoes are superior, because they're made from one hundred percent snakeskin, not synthetic materials. | [
"straw man: a misrepresentation of an opponent's position that makes it easier to argue against",
"appeal to nature: the assumption that natural things are always good"
] | 1 | closed choice | grade7 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Helen's shoes are the best, because they're made with snakeskin rather than synthetic materials. However, even though the shoes are made from snakes, that doesn't necessarily mean that they are better. This illustrates a type of logical fallacy known as an appeal to nature. | |
Not supported with pagination yet | Which figure of speech is used in this text?
Maria, please stay away from the ocean. You shouldn't go in the water until you know how to swim. | [
"paradox",
"oxymoron"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses a paradox, a statement that might at first appear to be contradictory, but that may in fact contain some truth.
You shouldn't go in the water until you know how to swim at first appears to be contradictory, because it is impossible to learn how to swim without going in the water. However, it contains some... | |
Not supported with pagination yet | Which job does the digestive system do? | [
"helps cells get building materials from food",
"helps make food"
] | 0 | closed choice | grade5 | natural science | biology | Animals | Body systems: digestion | All organisms need food. Food gives organisms the energy they need to survive.
Animals get their food by eating other organisms. An animal's digestive system breaks down food into small particles of fat, protein, sugar, and other nutrients. The blood carries these small particles to cells throughout the animal's body.
... | The digestive system breaks down food into small particles of nutrients. Cells can get energy and building materials from these small particles.
The digestive system does not help make food. Animals cannot make food inside their bodies. They must eat other organisms. | |
Not supported with pagination yet | What kind of sentence is this?
How well does Roger play the guitar? | [
"imperative",
"interrogative"
] | 1 | closed choice | grade5 | language science | punctuation | Sentences, fragments, and run-ons | Is the sentence declarative, interrogative, imperative, or exclamatory? | There are four kinds of sentences.
A declarative sentence is a statement. It tells about something. A declarative sentence always ends with a period.
I have an older brother and a younger sister.
An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark.
How ... | The sentence asks something, and it ends with a question mark. It is an interrogative sentence. | |
Not supported with pagination yet | What is the mass of a piece of candy corn? | [
"2 kilograms",
"2 grams"
] | 1 | Select the better estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose metric units of mass | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using metric units, mass may be written with units of grams or kilograms.
There... | The better estimate for the mass of a piece of candy corn is 2 grams.
2 kilograms is too heavy. |
What is the capital of Alaska? | [
"Helena",
"Olympia",
"Juneau",
"Dover"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Juneau is the capital of Alaska. | |||
Which better describes the Catoctin Mountain Park ecosystem? | [
"It has warm, dry summers. It also has many different types of trees.",
"It has cold, wet winters. It also has only a few types of trees."
] | 1 | Figure: Catoctin Mountain Park.
Catoctin Mountain Park is a temperate deciduous forest ecosystem in Maryland. | closed choice | grade3 | natural science | biology | Ecosystems | Describe ecosystems | An ecosystem is formed when living and nonliving things interact in an environment. There are many types of ecosystems. Here are some ways in which ecosystems can differ from each other:
the pattern of weather, or climate
the type of soil or water
the organisms that live there | A temperate deciduous forest is a type of ecosystem. Temperate deciduous forests have the following features: warm, wet summers and cold, wet winters, soil that is rich in nutrients, and only a few types of trees. So, Catoctin Mountain Park has cold, wet winters. It also has only a few types of trees. | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"Best wishes,\nLucy",
"best wishes,\nLucy"
] | 0 | closed choice | grade2 | language science | capitalization | Capitalization | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Not supported with pagination yet | Which object has the least thermal energy? | [
"a cookie at a temperature of 32°C",
"a cookie at a temperature of 27°C",
"a cookie at a temperature of 17°C"
] | 2 | The objects are identical except for their temperatures. | closed choice | grade4 | natural science | physics | Heat and thermal energy | How is temperature related to thermal energy? | All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy.
Temperature measures how hot or cold matter is. If the particles in matter slow down, the temperature goes down. The matter now has both ... | All three cookies have the same mass but different temperatures. Since the 17°C cookie is the coldest, it has the least thermal energy. |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is weaker in Pair 1.",
"The magnetic force is weaker in Pair 2."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade4 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are farther apart, the magnetic force between them is weaker.
The magnets in Pair 1 are farther apart than the magnets in Pair 2. So, the magnetic force is weaker in Pair 1 than in Pair 2. | |
Select the organism in the same genus as the crown-of-thorns sea star. | [
"Acanthaster planci",
"Melanoplus bivittatus",
"Sphodromantis viridis"
] | 0 | This organism is a crown-of-thorns sea star. Its scientific name is Acanthaster planci. | closed choice | grade8 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A crown-of-thorns sea star's scientific name is Acanthaster planci. The first word of its scientific name is Acanthaster.
Sphodromantis viridis is in the genus Sphodromantis. The first word of its scientific name is Sphodromantis. So, Sphodromantis viridis and Acanthaster planci are not in the same genus.
Melanoplus bi... | |
Not supported with pagination yet | Based on this information, what is Oliver's phenotype for the body hair trait? | [
"a hairless body",
"a hairy body"
] | 0 | In a group of cats, some individuals have a hairy body and others have a hairless body. In this group, the gene for the body hair trait has two alleles. The allele for a hairless body (b) is recessive to the allele for a hairy body (B).
Oliver is a cat from this group. Oliver has the homozygous genotype bb for the body... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | Oliver's genotype for the body hair gene is bb. Oliver's genotype of bb has only b alleles. The b allele is for a hairless body. So, Oliver's phenotype for the body hair trait must be a hairless body.
To check this answer, consider whether Oliver's alleles are dominant or recessive. The allele for a hairless body (b) i... |
Not supported with pagination yet | Which type of sentence is this?
Aaron has an unconventional swing, but he manages to drive the ball farther than some professional golfers. | [
"simple",
"complex",
"compound-complex",
"compound"
] | 3 | closed choice | grade10 | language science | grammar | Phrases and clauses | Is the sentence simple, compound, complex, or compound-complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought that can stand alone as a sentence. A dependent clause (or subordinate clause) is not a complete thought and cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alon... | The sentence is compound. It is made up of two independent clauses joined by the coordinating conjunction but.
Aaron has an unconventional swing, but he manages to drive the ball farther than some professional golfers. | |
Not supported with pagination yet | Which correctly shows the title of a poem? | [
"\"All the World's a Stage\"",
"\"all the world's a Stage\""
] | 0 | closed choice | grade3 | language science | capitalization | Formatting | Capitalizing titles | In a title, capitalize the first word, the last word, and every important word in between.
The Wind in the Willows James and the Giant Peach
These words are not important in titles:
Articles, a, an, the
Short prepositions, such as at, by, for, in, of, on, to, up
Coordinating conjunctions, such as and, but, or | Capitalize the first word, the last word, and every important word in between. The words the and a are not important, so they should not be capitalized.
The correct title is "All the World's a Stage." | |
Not supported with pagination yet | Which figure of speech is used in this text?
Although Billy hasn't worked in years, his mother prefers to say that he's between jobs right now. | [
"euphemism",
"oxymoron"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses a euphemism, a polite or indirect expression that is used to de-emphasize an unpleasant topic.
Between jobs is an indirect way of saying unemployed. | |
Not supported with pagination yet | Which word does not rhyme? | [
"case",
"mule",
"chase"
] | 1 | closed choice | grade1 | language science | phonological-awareness | Rhyming | Which word does not rhyme? | Rhyming words are words that end with the same sound.
The words tip and slip rhyme. They both end with the ip sound.
The words lake and make rhyme. They both end with the ake sound.
The words tip and lake don't rhyme. They end with different sounds. | The words chase and case rhyme. They both end with the ase sound.
The word mule does not rhyme. It ends with a different sound. | |
Not supported with pagination yet | Suppose Gina decides to eat the almonds. Which result would be a cost? | [
"Gina will give up the chance to eat the fudge. Gina thinks fudge would have tasted better than almonds will.",
"Gina will get to eat the almonds. The almonds will be healthier than the fudge would have been."
] | 0 | Gina is deciding whether to eat almonds or fudge for an afternoon snack. She would like to eat something tasty, but she is also trying to be healthier. | closed choice | grade5 | social science | economics | Basic economic principles | Costs and benefits | Before you decide to do something, it is often helpful to list costs and benefits.
Costs are what you give up or spend when you decide to do something. Costs involve giving up things that you want or need.
Benefits are what you gain or save when you decide to do something. Benefits involve gaining something that you wa... | This result is a cost. It involves giving up or spending something that Gina wants or needs:
Gina will give up the chance to eat the fudge. Gina thinks fudge would have tasted better than almonds will. |
Which trait does this leaf-cutter ant have? | [
"It has long, thin legs.",
"The outside of its body is soft.",
"It eats leaves."
] | 0 | This picture shows a leaf-cutter ant. A leaf-cutter ant is a type of insect. Each leaf-cutter ant has a hard outer covering called an exoskeleton. The exoskeleton helps protect the ant's body.
This type of ant is called a leaf-cutter because it cuts pieces of leaves off plants. Leaf-cutter ants do not eat the leaf piec... | closed choice | grade3 | natural science | literacy-in-science | Animals | Benefits of group behavior: leaf-cutter ants | Both the picture and the text tell you about the traits of leaf-cutter ants. Start with the text.
This type of ant is called a leaf-cutter because it cuts pieces of leaves off plants. Leaf-cutter ants do not eat the leaf pieces. Instead, they use the pieces to grow their food.
The outside of a leaf-cutter ant's body is... |
Subsets and Splits
Validation Subject & Topic Summary
Reveals the distribution and count of images across different subjects, topics, and categories, highlighting the most prevalent combinations.
SQL Console for derek-thomas/ScienceQA
This query provides a balanced sample of entries across different topics where images are missing, allowing for a more representative analysis of text-only data.
SQL Console for derek-thomas/ScienceQA
This query provides a balanced sample of text entries across different topics, ensuring that each topic is proportionally represented, which is useful for further analysis or model training.
Random Sample by Topic Ratio
This query balances the dataset by randomly selecting a proportional number of items from each topic to create a balanced subset of 3000 items, revealing how well-represented each topic is in the dataset.
Topic Counts by Grade
Provides a breakdown of the number of questions by topic (physics, chemistry, biology, geography) for each grade level, revealing the distribution of question types.
Validation Category Counts
Counts the number of unique questions per category, helping to understand the distribution of questions across different categories.
SQL Console for derek-thomas/ScienceQA
Identifies categories, questions, and answers that appear more than four times in the validation dataset with images, highlighting common or repetitive entries.
ScienceQA Validation Grouped Data
Provides a count of images and overall occurrences for each combination of subject, topic, category, and answer, helping to identify popular or common configurations.
Train Data with Numeric Choices
This query identifies distinct rows in the dataset where one of the elements in the choices column contains a number and the image column is null, providing insight into data completeness and specific patterns in the choices.
Physics Train with Images and Lectures
Retrieves physics educational records with images and lectures for specific grade levels, providing basic filtering but offering limited analytical insight beyond data availability.
Physics Q&As with Images
Retrieves physics-related training examples with images for specific grade levels, providing basic filtered data but offering limited analytical insight beyond simple categorization.
Physics Questions Gr 2-6 With Images
Retrieves physics-related test items with images for specific grade levels, providing basic filtered data but offering limited analytical insights beyond simple data retrieval.
Filter Text-only Train Questions
Retrieves questions and related metadata from the dataset excluding those with images, offering basic data filtering.
Skills Without Images
Counts the number of skills where the image is missing, providing a basic overview of incomplete data.
Top 10 Hard Text Questions
Retrieves the top 10 longest questions without images, ordered by grade level in descending order, providing basic insight into potentially more complex questions.
SQL Console for derek-thomas/ScienceQA
Counts the occurrences of each category, question, and answer combination where an image is present, providing basic filtering on the dataset.
List ScienceQA Topics
Lists all unique topics in the dataset, which provides a basic overview of the categories present.
Cultural Questions Without Images
Retrieves 100 entries from the 'train' dataset where the image is missing and the topic is 'culture', providing basic filtering with limited analytical value.
Biology Skills for Grades 2 & 3
Lists unique skills and categories for biology topics in grades 2 and 3, providing basic filtering of the dataset.
Biology Qs for Grades 2 &
Retrieves all entries for grade 2 and grade 3 students focusing on the biology topic, providing a basic filtered view of the dataset.
Biology Grade 3 Questions Count
Counts the number of entries for grade 3 students in the biology topic, providing a basic count of data points.
Select Test Rows With Images
The query retrieves all records from the 'test' table where the 'image' column is not null, providing basic filtering without deep analytical value.
Test Images Query
This query retrieves a limited sample of rows where the image column is not null, providing basic filtering but minimal analytical value.
Test Data with Images
The query filters out rows where the image column is not null, providing a basic subset of the data but without much analytical insight.
Select Test Entries With Images
The query retrieves all records from the 'test' table where the 'image' column is not null, providing basic filtering but no deeper analytical insight.