Datasets:
stemdataset
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STEM

Dataset card Data Studio Files
xet
 Community
1
subject
stringclasses
4 values
grade
stringclasses
15 values
skill
stringclasses
445 values
pic_choice
bool
2 classes
pic_prob
bool
2 classes
problem
stringlengths
0
1.12k
problem_pic
unknown
choices
listlengths
2
4
⌀
choices_pic
listlengths
2
4
⌀
answer_idx
int64
0
3
math
algebra-1
identify-linear-and-exponential-functions-from-tables
false
true
Is this function linear or exponential?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEqCAYAAAAvYSeKAAAhWklEQVR4nO3de1RVdf7/8RcIOOKNvCCmKAiGiGNp4SVFRx21dMwpr9hgGRqiZvYzmcRL5YVMuqA4qc2oUWIYWmMXErBCLUNdk+QYWDlphjpKkl84hIXA94+WrC8/lIt+NnD0+ViLtXKz+Xzeu7+e56x99nEI331HqezA/O5b9dzhCXU9huVeGXCorkcAAADAdXCs6wEAAACAGwmBDQAAABhEYAMAAAAGEdgAAACAQQQ2AAAAYBCBDQAAABhEYAMAAAAGEdgAAACAQQQ...
[ "exponential", "linear" ]
null
1
math
grade-1
compare-clocks
false
true
The clocks show when some friends took out the trash Thursday evening: Who took out the trash first?
"iVBORw0KGgoAAAANSUhEUgAAAtEAAACiCAYAAACH4JFBAAAyKklEQVR4nO3deXxU9b3/8deZSSbLTAhBIIloEiThirIkKEKVJaiA4lI3tFYtFPDX/h6ihVarIOACKN57ewXRtt6iBvnJoqAsArKobFYslSWACwkQApJM2BIyA8lMZub3R2QkBkgmmWQSeD8fjzwazjlzzifTvh/fT79nM3w+nw9pvsrK8OXm4t23D9/evfj27cNXVISvtBScTnxOJxQXg8kELVtiREeD1YrRogVGQgJG+/YY7dtj+vE/iYwM9V8k0vwplyIiFzxDTXQ...
[ "Lily", "Sally" ]
null
0
math
grade-1
comparing-review
true
false
Which group has fewer?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAHwAAABeCAYAAADhenCDAAAET0lEQVR4nO2dv1MTQRTHv3d7l4m/AswYfxRBLNSBGQsrCgv/AqGzcqy001Ta+R/YgR1a2dkBnZ2WthaMxgJNAU6cMRFFTO6yFjvnIHBR4O2t2fc+DYTMvLff/WQzm+MWAq21Xu8C7zeBjRRINASPiALghAIuHAVOl4Bg/afWr7+6HpZQBNMVIGpsmgdnS8ClY+bVIPjDRgq8/Q6sdYF3m0D4NTFPiGw/OaGMWwD4lgJhuu0JwU8ytz0NhG6HIhSNCGeGCGeGCGe...
0
math
kindergarten
match-analog-and-digital-clocks
true
true
Look at the analog clock: Which digital clock shows the same time?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABV7UlEQVR4nO3deViUVfsH8C8u7IySWwg6iLnMWO4CWmJlaAlqifuWS26VobnVr7RcWtxeRe1VcV9SS3EFS7AySmUxc3kd0hQYGURDBAaBGVz4/UGMIMPMMxvD8v1cV1cMc57z3PEyL/ecuc99bAoLCwtBRERERERmUcvaARARERERVSdMsImIiIiIzIgJNhERERGRGTHBJiIiIiIyIybYRERERERmVMfaAZD1qVQq5OfnIz8vD/n5KuTn5yE/Px+169SBo4MDHBwc4OD...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA5AAAAEJCAYAAADiusiGAABgz0lEQVR4nO3deVzU1foH8A8u7CDmFoKCmAtjgSugJVYKlqKWuCvmkkulYblUv9JyaXG7itpVwV1TSzEVtQQro1QWM6XroKYsOoqGKAwCMwjy+4MYQRjmO/vC5/169XKWc873ce6Md5455zzHqqysrAxERERERKQTVlZWxg6BSG/qGTsAIiIiIiIiMg9MIImIiIiIiEgQJpBEREREREQkCBNIIiIiIiIiEoQJJBEREREREQnSwNgBkPHJZDIUFRWhqLAQRUUyFBU...
0
math
grade-8
parts-of-a-circle
false
true
What is \line{LM}?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADICAYAAACdx5VnAAApF0lEQVR4nO3deXxU9b3/8fcsmexDEiAkhEASCDthNWwiKCBiXegPrlqL16sVta1WbH94q21tbXtvW+1ttdpFxcqttQWKrf25gYIQl0ZAWRJACGSBQEJWsq+TzO+PkMmMEEBJOGcmr+fjkcfjnDNnznxmcv54z3c+53ssbrfbLQAAAAABwW50AZeCxWLptWPz/QgAAABm0icCPiEcAAAAfYXV6AIAAAAA9ByrxWLRtm3bznhg1qxZio+PP2N7QUGBLBaL/vCHP2j16tW...
[ "center", "diameter", "radius" ]
null
2
math
pre-k
flat-and-solid-shapes
false
true
Is this shape flat or solid?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADtCAYAAACF+wIyAAAQbElEQVR4nO3d3Wob974G4N/arKvYt7AP9p3sy3TiGozBdcG4PbBpDyJ/YjkiIKKYhignskEIgYyFZh/811pt0yT+mtF/Pp4HAk1iS680Y3irjF79oyiKIgAAgFL8V+4AAADQJgo2AACUSMEGAIASKdgAAFAiBRsAAEqkYAMAQIkUbAAAKJGCDQAAJVKwAQCgRAo2X/epn34BAPAk/8wdgBoqVhEnm+m///t/Iv7h/8MAAB5Lc+Lv3v0cMR2nX+9+zp0GAKBRFGz+ajG...
[ "flat", "solid" ]
null
0
math
grade-3
multiplication-input-output-tables-find-the-rule
false
true
What is the rule for this input/output table?
"iVBORw0KGgoAAAANSUhEUgAAAFgAAAB/CAYAAABrPAW6AAAKO0lEQVR4nO2df1SV9R3HXxdQEL15NSIy5IeA5RRdMeJoQTpTFGftmBQpqRN/sOavHBaxMUXhzF941zRWpqsYk7AzT+LEK24WpCU7wSQqiBQdyCCg8fMmeeU++8PD3QjOCeT7RYHv6xz+uJ/nPt/3577O9zw89z7f514dex/W6AccC0lkfu6vb3UbPUJbcwa7W93EQEcJlowSLBklWDJKsGSUYMkowZJRgiWjBEtGCZZMrwSnh26h6JlUUb0IQz/EGeMj6yh4+o80rc7...
[ "× 9", "× 2", "× 4", "× 7" ]
null
1
math
grade-3
compare-area-and-perimeter-of-two-figures
true
false
Which figure has a greater perimeter?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAMQAAABRCAYAAACNDQmbAAAGYklEQVR4nO3dX0hUfR7H8feMTpb7uIupuw0WsdYoUpQFofaHCuvG0MIIK4spqC4E6aZuvPCm24SiQuhigiDQMoRdhZDASCh6yIgywn0qsahxsT9UOqapZy/mSY7P07LsY2d+5zifFwzizHH4jvP9zDlnzvmdn8+yLGtwHJ7F4PMkTFiIJI1UH2SkQCgd/jYPfINjlvXzJ9NliZhX/GdI/SUW/yU4Dwr+FE+LSLL4PAl9IxAdh3/FwP9pIv6AwiDJKCMl3vsAw5P...
0
math
grade-7
identify-reflections-rotations-and-translations
false
true
Look at this shape: Which image shows a translation?
"iVBORw0KGgoAAAANSUhEUgAABbAAAAC3CAYAAADD5XikAAAYgklEQVR4nO3dbaxV9Z0v8B9w5OmIIlJgb4qlgbEQAcXda+8EtfWhVqbtJE1qtX3RetOYTNqmNO2dtJU7rW1ucmN6Mze+aGP6oqZNU0MmSq2NHaupzvjIwILTelGcAQHprD3KgXjl6XA5nHNfnLs3IBwezllrr732/nwS4zmw/e1ftiuw+e4/3zUhIoYDAADIxPCwt9cAAJCViUUvAAAAAAAAZyLABgAAAACgLQmwAQAAAABoSwJsAAAAAADakgAbAAAAAIC2JMAGAAA...
[ "A", "C", "B" ]
null
0
science
grade-8
compare-concentrations-of-solutions
false
true
The diagram below is a model of two solutions. Each purple ball represents one particle of solute. Which solution has a higher concentration of purple particles?
"iVBORw0KGgoAAAANSUhEUgAAAbAAAAEVCAYAAACBn7B3AABKKklEQVR4nO2deXxU5b3/P+ec2ZdkshAgGMiwKvtSUBGtYBUEXBCrVV+02OtSr12stdZb+murXrRe6lLtVYu2tdxSvRWrVOEi7tpaEQRESGQNYclC9mSSzHbO8/vjLHMmmSQzk5kkc+b7fr14MXPW55ycz3w/z/dZDscYYyAIgiCIDIMf7AIQBEEQRDJQACMIgiAyEgpgBEEQREZCAYwgCILISCiAEQRBEBkJBTCCIAgiI6EARhAEQWQkFMAIgiCIjIQCGEEQBJGRUAA...
[ "Solution B", "Solution A", "neither; their concentrations are the same" ]
null
0
math
pre-k
circles
true
false
Which shape is a circle?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACTCAYAAAB28ADfAAACZUlEQVR4nO3Uu25USRhG0b/bl4DLTAbiAYAJiOH9U8cTwECOSW2whHHrTHCEBKR49pF61oqqVMkXbNVuWZbl8nbmw83M9WHmbhn4bae7mccnM88fzDw9n9ldfl2Wi6utZ3HM3vwxc/r+Zr08O595+XCtEH7X9WHm3ZeZj7cz/9zM7K/u1geRcZ8en6xNzcx8PszsDz88wH363tS3ZWa/7RT+L4RGQmgkhEZCaCSERkJoJIRGQmgkhEZCaCROtx7wq7/+vth6wlF...
2
math
grade-5
mean-find-the-missing-number
false
true
Brooke has the following data: If the mean is 753, which number could g be?
"iVBORw0KGgoAAAANSUhEUgAAAUQAAAAkCAYAAADxaUMoAAAIPklEQVR4nO3daVCU9x3A8e8+u1hYEAS5VBRE5FJKjLdIKtGo8aAm1lY7uTQv7JFJa+P0RVIzNjFpnelkEuuYaDutNrZpPEY8QqvSemLBEzGg8UBULKKrwnLswh5PX4DUFYEdd58F5fd5+Tx7fGee/f95rl10qqqqADank3q7A6eqoiKEEE82HaDodAQa9PgpSvMyVVXVBrsDi8PRtXVCCNFFAvR6jAY9is2pymQohOjRLA4HNqeKYnHYu7pFCCG6nMVhR7E75YyhEEL...
[ "754", "733" ]
null
0
math
grade-7
classify-rational-numbers-using-a-diagram
false
true
Use the diagram to help you answer the question below. Which of the following is a whole number?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEuCAYAAAC08GWcAACHw0lEQVR4nO3dd3yT9fbA8U920qZ7saGlTNlbEQERUUQFAQc48erVKw4c1+t1r+vPrdd1najgBBQQVEBlyt57l1FG90iaNPv3x9OEIhvarJ7369VX07RNTjqenJznfM9X5fP5fAhRh+TZvBys8FBc6aXC5cPm9mJ3+7C5fNjcPuVy1ceBy/7rXd7jXOfD4lL+jWK1KoxaFUaNCqMWTIHLR97/9TpT1XUJBjWJBhVJBjVJRjWJBjVJBuV9vF4V4p+aEEIIIU6XShJsES2...
[ "–78", "– 16 9/10", "7 2/7", "51" ]
null
3
math
algebra-2
find-inverse-functions-and-relations
false
true
The graph below shows a function. Is its inverse also a function?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABshUlEQVR4nO3de3QU550n/G+ru9UtqXUXSEIgYS6SLSyBwTIWhhiCY3t8m0CSxbl740nizDjZyZw3e7LzZjKTLK83u7lNvLbjZMYbOzmZzcQT27HBMsZBXCIMGBkEEliSZdAVXVrqbvW1Ll31/iFKRiCBWqqHVqu/n3NyciSrvvxU1V39q0dPPWXRdV0HERERERGZIiXeBRARERERzSdssImIiIiITMQGm4iIiIjIRGywiYiIiIhMxAabiCb4v//3/6KhoWH8a1VVsXP...
[ "yes", "no" ]
null
1
math
grade-3
match-clocks-and-times
false
true
What time does the clock show?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAEJCAYAAADhBFPCAABZEUlEQVR4nO3de1jU55k//vfMwAzgDIMMAjOiDB7AGFASbFJtUyBJNdvGiEmatrZdsd2m20Ma3G7b7WF/mh626Xa3Yrfbfpu2CdlN7W4bKxbTRJvEIWmlSSWOGY0ORhlUBlAGB2bkMBzm9weZWZA5PHMe4P26Lq7gfJ7n87kT4co9z9zP/UjcbrcbREREREQ0J0gTHQAREREREUUPE3wiIiIiojmECT4RERER0RzCBJ+IiIiIaA5hgk9ERERENIekJDoASrzxiRGMTQx...
[ "eleven o'clock", "twelve o'clock", "four o'clock" ]
null
0
math
grade-2
equivalent-amounts-of-money-up-to-1-dollar
true
true
Look at these coins:Which group shows the same amount?
"iVBORw0KGgoAAAANSUhEUgAAAdIAAABNCAYAAAASJ+UUAAB2rElEQVR4nOz9d3ilZ3XvD3+eunuTtnovoxlpeu/V414xBmOTAEkIBEISQsrJCTmBkEZOTg6/JOcNJAETiqluuLfx2OPx9F6lUdeob2lr9/LU948tyTbYZsbYHjvW97p0qez2rLUe3eu+V/kuwbZtmznMYQ5zmMMc5vCmIF7pC5jDHOYwhznM4b2MOUc6hznMYQ5zmMOvgDlHOoc5zGEOc5jDr4A5RzqHOcxhDnOYw6+AOUc6hznMYQ5zmMOvAPlKfrht21iWhSgW/Hk...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAv0AAADvCAYAAABhR2utAAEAAElEQVR4nOz9d5hl11Xg/X9PvDlWzrm6q3NOUreyZEuyZcs5gBkDAxjGNgyTZ34wMMM7L7wMcYCxMSY5G0m2ZCu2QqsVOuecKue6OZx8fn/cUtsGGxRa6lZrf/z4KalVVfeus/qpWmeftdeWAB9BEARBEF4X3/eZtuB8BYouOOK3qiAIV5kqQUyBgTA06bU/kxBFvyAIgiC8btOmz97C1X4XgiAIP97mODTqoF7tNyIIgiAIb2fnKrWPLTosidRW1wRBEK6mogt...
1
math
grade-2
place-value-models-up-to-hundreds
true
false
Which place-value model shows 823?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAARAAAACuCAYAAAD+vVKkAAAduElEQVR4nO2da4wk63nXf3Xpqu7q+9z27Nk997svnOT4Fh+HxI6CiZACCIP8IUaKFBSDhAXGUggfggURfEBGiIAU8QE+IEXCifgQGyGSKIRgmWN8gk9yLo7X56ztc/Ne5tLddem6V/GhZqa7Z7p6xr292z0zz281mt2tmqee6e73X+/l+b+l5Hme34zgjSE4KSQ5giAIU9EVaGrwhAWXDFBuhnn+TXvZaQmCcNb4SAv014fFPy4b8FS9UBdBEIRpOClc8+BGBN8...
0
science
grade-3
predict-heat-flow
true
false
Two solid blocks are heated to the temperatures shown. The blocks are placed so they touch. Which diagram shows the direction heat will flow?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAY0ElEQVR4nO3deXgc5X0H8O/M3lrd1n1bxpbBGBsbcAwYjLEdAzEhhQTSQhKHNAmm5CgPuUhLG9KUEJK2aTGlCUfAJIYEjG98EIwPGXxbji0sW/d9WtJq79mZ/jGrlVcSsYxWMyPp+3keHqzVavSuZuY77/ubeWcERVGUlgBwzgO4QoCkgIgoJswCkGACpscBmVZAaPErysFevZtFRBPdgkTAfNajfpFtBUqcahoREcWCKwSccQPNAaDCA4i9kvoNhg0RxVqCSc0...
2
math
grade-6
quadrants
true
true
Which shape is in Quadrant I?
"iVBORw0KGgoAAAANSUhEUgAAAfkAAAH8CAYAAADSe9ZXAAA5tElEQVR4nO3de3BT94H28UeysLGNb2DANjHOjUsCDuESws00lDBLQgq5MRne9JJJtrN0pkOmm+lMlu12upmGTWcnbULT7JbdTmi2afuGge2WQpZACBgThxgCGGMIkMRAfME2lm3ZsiTr8v7BKxdjAzL46Ogcfz9/Rcfy+T35IZ9H56IjRyQSiQgAANiO0+wAAADAGJQ8AAA2RckDAGBTlDwAADZFyQPQH/7wB+3fv7/ncTAY1E9/+lN5vV4TUwG4WZQ8YHMbN27Uxo0...
null
[ "iVBORw0KGgoAAAANSUhEUgAAApcAAAH8CAYAAACEt4SVAAA/wUlEQVR4nO3df3BV9YH//9e9ueT3TwiQBEPwR0CFiIIiv0KlyBbF4k/G4Wt/OLqdtTNdnK7TGdftdrpOZe18xlapdbfudqTduu3KYLul4CKoEMGIAYEQAgbUACaBJOQmucnNvTf3x/eP9EZCEriBc+65J3k+ZnbYe3JzzqvHk3Nf931+OSKRSEQAAGDUcTgcVkfAGOS0OgAAAABGD8olAAAADEO5BAAAgGEolwAAADAM5RKAfv/732vPnj39r4PBoH7yk5/I6/V...
0
math
grade-6
identify-complementary-supplementary-vertical-adjacent-and-congruent-angles
false
true
Which angle is supplementary to \angle{3}?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEECAYAAAASx0PMAAAu/klEQVR4nO3df1BVd37/8RdCvMpGIGTBbcLORSUDuY1BnaTAdHeATrtCkn6VjFZWG6MratpqAB0F3MgvW0QTBWt2J0ZtiIlGV6NkZ7KSZDq5tNkFMq1CtHdhpXjpkq1CotfLLnojP75/sND4AyJwLwcuz8cMs3rvuefzvkl25sVn3uf98enp6ekRRpXD4ZDD4VB4eLjRpQAAAMDNJhldwERktVqVn59vdBkAAADwAAK2AcrLy/Xmm2/KbrcbXQoAAADczIcWkdHn7++...
[ "\\angle{1}", "\\angle{4}", "\\angle{6}", "\\angle{2}" ]
null
2
math
grade-1
equal-sides
true
false
Which shape has 3 equal sides?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGjklEQVR4nO2dS08bVxiGP3NbpCTdtYrUbS+brvNn+vtKUJDYmA1SNt7BLkpZpKlYFdtADMhOLMf1zOliSEvA2B77nO98l/eRsojMZYQejcfj9/XbCCGE7pjoryHRoCCaBAJgZTYaRE/XiX58QvT9FlGj+zmE437uwwKWefGMaOP9sPrP8y2in7+pLARgVQYF0btPRJ0x0Z9DorX+pHoAkoGYPF2vnCIi+lgQrRV3HgAgJl+c+icQreU9FOAFiAZYgGiABYgGWIB...
0
math
grade-1
compare-size-weight-and-capacity
true
false
Which piece of wood is shorter?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK0AAABWCAYAAAC9+haZAAAcmElEQVR4nO2de3RU5bn/P3O/JZPb5B4gIQkBcjGJ3IJRQLloRbRU0VpOrUvs0baLc/y11ONallrbczws2lpZtnisXdaWeiq2tKDWIigFuZRLkxAC5EomkEzuCTOTud9+fwyzmckFokkg6dmftbJWZma/e7977+/7vM/7fd/ZIznQ5Qkc7fUCICEASBARmVwECCCBAJQb5MiP9XrDZCoKVmQyIgkqUwJHer3IQ7F1drSU2xMVGJSicEUmFz3uAJ92e6i1+gkA0pB...
0
math
pre-k
represent-numbers-up-to-20
true
false
Which picture shows 6 rectangles?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAcwAAABcCAYAAADjyoVxAAACx0lEQVR4nO3ZP04UcRzG4e+sC9JYmCwxsaKkMdHETriMtRfwAnoBa69iQdDSgsItrUgUtqIQWcJYDBtoyL7FCDvwPNX+yy/zbvPJZJovv+ft19l5VVU11VZVUwBAW201VW3VzmRc42+z82uJFEsA6DRdFZuq/dl5jRf3lNtPRrW7uVaTddEEgOOztvaO5jU9uai2qkaLPIolAFyZrDe1u7nWvWmrRte/AACuLNrYNNeCCQDcTDABICCYABAQTAAICCYABAQTAAK...
1
math
grade-2
read-a-thermometer
false
true
What is the temperature?
"iVBORw0KGgoAAAANSUhEUgAAALkAAAEOCAYAAADVFbYlAAAT4klEQVR4nO3dfXAb5Z0H8K9MgEIbe80x17uEJDLlNSTxmik5QgjaTUt5SVtL0OOlECQxx12hBVsw5eVgkMxAOY5SSbTQa5kiCVpypVwkM8ORQotWBEivcOcVjkkgDV4ngblCj6xDD27yor0/ZAmb2I5eVn559vuZ8dgE+/ETzzePn320v/25LMuyQCSwOVP5zTKZDHK5HHRdh6ZpB/1/SZIgyzI8Hg+8Xi9kWZ7K6ZGgXI1eyQ3DQE9PDzKZDEzTBACsPMeD05Ytw2e...
[ "40°C", "30°C", "25°C", "35°C" ]
null
1
math
pre-k
fewer-more-and-same
false
true
Are there more carrot noses than snowmen?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEECAYAAAASx0PMAAA500lEQVR4nO3deZQcZ33u8e9bvXfPvkiakUYz0mjfbMmWwXvAC8aQYEgwhM2GkHsCCSa5dnKTE4JDLicXkrAkJECCQ9jC5Rps7IAdjJew2A7yItmSrH0ZjUbL7Gvv3fXeP1oazWi0zIx6pC7p+Zxja6ar6+2qeU5V/brqrbeMtdYiIiIiIiJF4VzoBRARERERuZiowBYRERERKSIV2CIiIiIiRaQCW0RERESkiFRgi4iIiIgUkQpsEREREZEiUoEtIiIiIlJEKrBFRER...
[ "yes", "no" ]
null
0
science
grade-5
use-evidence-to-classify-mammals-birds-fish-reptiles-and-amphibians
true
false
Reptiles are a group of animals with similar traits. The following traits can be used to identify reptiles: They have scaly, waterproof skin. They make eggs with shells. Observe the animals and read the descriptions. Select the one animal that has all of the reptile traits listed above. Minnows live underwater and have...
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAp8AAACmCAYAAACcAuREAAEAAElEQVR4nOz9ebxsVXnnj7+ftdbeVeecO8Llgkwig4CKiAxRARUhGocYJ0QTxRg1TRK1tRPTbavf2DGdVtMmJk7xF1ujUdPmhTFo1LRKBESNggoOqIDIPNz53jNV7b3Wen5/PGvXOedyGZ0S2J/Xixf31qmza1ftOud+6nk+g1yyU/XIGVjt6dGjR48ePXr06NHjZ4LZBD+cB9kVVXvi2aNHjx49evTo0eNnjdkEoqr6iz6RHj169OjRo0ePHvcPhOV/OeFJR+M...
1
math
grade-4
identify-parallelograms
false
true
Is this quadrilateral a parallelogram?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACWCAYAAADkHv8wAAAXF0lEQVR4nO3d+XdUZZ7H8c9zl0oIJEAguLTt1k1ra7vNOI72GXtm7HO0Hbd2Q1sBcZ8fZuaXOfOPzE+NqES2UdR27bH1tHQLfdBudWgWkcV9QxKSQBIqSdWt+8wPt3JvKgZBqLq3KvV+nROrnouYLxywPk/dT54Ya60VAAAAgKpwsh4AAAAAmE4I2AAAAEAVEbABAACAKiJgAwAAAFVEwAYAAACqiIANAAAAVBEBGwAAAKgiL+sBMLUP947pj78flN9i1DbDkesaeZ7...
[ "yes", "no" ]
null
0
math
precalculus
outliers-in-scatter-plots
true
false
The two scatter plots below show the same data set. Choose the scatter plot in which the outlier is highlighted.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAU4AAAFGCAYAAAAFAHYEAAAobklEQVR4nO3df3AT550/8Ld+2JZBkrFizMTE2BfLEDs4/HAsx8TphEyjZNpkOu0kwekl6dVO25xTCL1MSHJDBx/NcaNCmYYATZg2nsxd3UJok5BOpiRzB/UdGFn5OlCwgdg+BATnsEA2loLXkqz9/qF6QViyWdBKa/n9msnY+9F6n2cV8/azP7SPRhRF8f8CQM9lwDcKhEQQEdFV9BrApANKZwBzMgHN/42IYvtQqrtFRDQ1VJsBffflyMKtmcCCmZFUJSKiK3y...
1
math
grade-4
identify-parallelograms
false
true
Is this quadrilateral a parallelogram?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAiZUlEQVR4nO3daXxU5dnH8SuTIQkhkLAEAgRCJCRsBtlkCXsERKJYN1AEFPel2mq1trV116ptfdpaa9GnPlWLdaOlSAthdQHBBZUlQBZIgIQsJGRfh+R5gd6ZCUEmyZm555z5fV9dd0LmXPbji7//3pwENDU1NQkAAAAAQ9h0LwAAAABYCQEbAAAAMBABGwAAADAQARsAAAAwEAEbAAAAMBABGwAAADAQARsAAAAwEAFbRC794EGZ8O4tutcAAACABQT4+y+aWZT6K3k...
[ "yes", "no" ]
null
1
math
grade-7
classify-quadrilaterals
false
true
What name best describes this shape?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADpCAYAAAAeakAkAAAbBUlEQVR4nO3dbWxV94Hn8d8599xrCA82RIEYgcE4sKBahgWsEs20KQvDvGBKyqxUrQs7TcdNpKSTnbBNpKDChCp0iZR0412mMJvUCp2Sop1dLSVdtBoWr8hkR0nKw4LlKEzBODgIYjKAgfDge++5Z18cru8xhXBt33vP0/cjVVEpCf8UXnz987n/YziO4wgAAABASZh+HwAAAACIEgIbAAAAKCECGwAAACghAhsAAAAoIQIbAAAAKCECGwAAACghAhsAAAAoIQIbAAA...
[ "kite", "trapezoid", "rhombus", "quadrilateral" ]
null
2
math
pre-k
cubes
true
false
Which shape is a cube?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAR2ElEQVR4nO2dXXAb13XH/xffBECCHxJJiRY/LIm0JJuchmosO4n8kTZxM3E8ncaZjts4fXHtlzxUU+eh0xm1bmf6EE/Vl87EHT/ZbcYz1UuZ8UNUJ5aU1JI9omOSdmSKkilpSJpfIAmAAAksgNuHBXYXICFR1N3du9jz04wBLC7uHgN/3r3nnHvPMs45n88B1zNAqgDkOQhCOnwMaPQCh8NARwBg81nOP0rabRZB7JxHmwDfVEZ9sS8ADERUVROEbKQKwGQa+DI...
0
math
grade-6
nets-of-three-dimensional-figures
true
true
Which net will make this figure?
"iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAAQ9klEQVR4nO2deVjU9b7HXzPssswguKQeBzNTo0SPtNzqil1PZbcFl1tpecQErVyhk4lPxztDPaFHLDByVyDNBTUwsvK4DXrSq6WBpgkpyygKItsAwzbL7/4xzpw0NJbZQF7Pwx8Dv993Ps+84fP7frYvIkEQBLpwGMT2NsARSE9PJyYmBpVKZW9TQLiLycvLE8aOHSsA5q/o6GhBo9HYzaa7UhCNRiMsWrTILIKnl4cQOGyg+XXfvn2F7du328W2u06Qbdu2CX379hU...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAUkAAADKCAYAAAAo2bJqAAAwTUlEQVR4nO3deVTU97n48ffMsAzgMOyyRDGgYsCgpDW00Sg3Ea2xUZOYiO2tNnt/N40gFjBtUGyrWG0LqUmaBKKYLoEmjcakLUhSjfea69gmLjdOREVh3NBBWUaQAQZ+f4yMO+vMfGf5vM7J8Rwi33kE5uG7PIsM6EZwGN3d3dS1w7FWMJigU3x3BMGuPGSgUsAYXxjuBTJEknQodcZu9jZLHYUgCADJ/uAhdRDC9Y62mv+M8II4P/NvNEEQ7MdggqoWONsOR1p...
1
math
grade-1
ordinal-numbers
false
true
The first picture is a turtle. Which picture is fourth? first
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAoBUlEQVR4nO3de3SU1b3w8e8kEyUzSbgzAYIlQFCREC5HSUB4aUEUXBW0CCrHS8nycnoE4UhbEarQhkIVCwoeOWLipUsUsCi2hAMN1oJIXK8QkiD4OoYgRJNBieY6SCaZ948nM5kkc3nmPsn8Pmtlkcw8l53tzz2/7GdfNFar1YoQQgghhBAiIGLCXQAhhBBCCCG6E0mwhRBCCCGECKCgJdg/NFlJ3V/LuA/q+KFJRqEIIYQQQojo4FOC/V5lE2s+v+Q2cf7wOwtnG1s...
[ "turtle", "sub", "fish" ]
null
0
math
pre-k
circles
true
false
Which shape is a circle?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACbCAYAAACao4KyAAACgElEQVR4nO3UPW5VVxSA0f2efwpiiESRKFWqhCEwCc8pHlRGwQyAVDQ4TQobLNn46aa4skRv67uSWas6R6fYu/h0dsuyLJd3M//czFwfZu6XgUc73s28PJr548XMr6czu8vbZXl3tfVaPGdvX80cf7xZL7+dzrz5aa0QHuv6MPP+68znu5kPNzP7q/v1QWQ8pZdHa1MzM18OM/vDdw/wlB6a+rbM7LddhR+F0EgIjYTQSAiNhNBICI2E0EgIjYTQSAiNxPEmU/+...
1
math
algebra-2
outliers-in-scatter-plots
true
false
The two scatter plots below show the same data set. Choose the scatter plot in which the outlier is highlighted.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAUYAAAFGCAYAAAAW1zbwAAAmr0lEQVR4nO3df1RUZeI/8PcMyKAyg0yKRw2dk4OGSZjI0KTzPdknJ7ftc/ZbJxP73WDlUihtx9I9dmTd/bBnwvWUv9Y4FZ/O7lL+KK1Px09u301jF3EYlzQBLWCdJGkBHRAmGYaR+/1jYnTugCLe+cn7dQ7BfeYyz3NB3j333uc+j0wQBOHfLqDhItB1CXALICIaUWJlgDIGSB0DTIwDZP/uEYSqzlA3i4goPGSrgNj6i56NSXHAzLGe1CQiGkm6LgHf/Aj84AK...
1
math
grade-2
match-digital-clocks-and-times
true
false
Which clock shows six fifteen?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAMIAAAB5CAYAAABr7P6HAAAH6ElEQVR4nO3dT2wT6R3G8a8D4bAkHrUq22WFD2jVssvMtUXKCVFA4dDLJthnWHJOssmpEgl2ruSfxC0Re8XZJIf2ELTQa7basycqu5WqaqIuC1XVcRZQ/k4PxpbjXRLPeMbjxM9HQmSUye99Y8/jeeN533HC8zzv+Rb84zVs7MKOh8ixdzIB3SfgN+/Br09B4vmm531TjLtbIvG5lIST370ubZw9BRdOl1Iictxt7MKzV/D9Fnz7GjqKO6VvKATSTrpPlI55gB9...
2
math
grade-2
place-value-models-up-to-hundreds
true
false
Which place-value model shows 746?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAATQAAAChCAYAAABJXUPbAAAdxklEQVR4nO3deYwk130f8G/dd3X3TM/sxeVyyV1pRTIyyASSYyuyIcuOkJhxYlOQHIeJIkOWckgKHHllwLFjOZIQ2Ab4hyDBSLKKgMSwhBhB4hP6wxZixHBEJQECWqLIpfbSiHvNTB913/mj+u6untk5uqtrfx9gwF127as3R//m1av3rcdkWZbdCYHXXcBKgDgDIYSsBJ4BDA64qAInRIC5E2TZS91ld4sQQg7n7SbAX3Xzv5wSgTdrebUjhJBVYCXAqw5wOwR...
1
science
grade-2
compare-properties-of-materials
true
false
Which would stretch more?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAAyPElEQVR4nO1de4wc913/zOz7ffu4vbft3PkdO3ZyiZ3WsRPHJFQRbVWVtChpaQuFCoUqUImINkAiigQCgRClqkoRbUgItYKK00ASWgQtMsFxnPgaYp3PF9+dffa99/b2Pbszuz/+OL4//3ZuZm9tX+udu/lIq7ubm/nNb2c/+/193z/prQxjOwJAyAEbNn6myFWBkQIwXQGiTuC+tuXjsk1IG7cKIQewI7D8e7567bhsE9LGrQTxT2XXjsm3Zio2bJjDJqWNloN...
1
math
grade-8
identify-alternate-interior-and-alternate-exterior-angles
false
true
\line{TV} and \line{WY} are parallel lines. Which angles are alternate exterior angles?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADSCAYAAABw17dKAAAa1UlEQVR4nO3df2yV9fn/8dfdQiusck61QoEOinSoKOEgugmanJbpJNuwp2YajRLKjygTGMc45IeOkLnJ2OZ2UAmMoD1NRhgm2GPAABNocUsYWqAVJzLaURC0InhubAcUKef7h5+eL5UW2nPu0/v8eD6Sk+B923dfiideXL3u6xihUCgkAAAAAJZIszsAAAAAkEwosAEAAAALUWADAAAAFqLABgAAACxEgQ1b7dy5Ux6PR3l5ecrMzNSAAQP04IMPqra21rLvUVVVpdL...
[ "\\angle{VUS} and \\angle{VUX}", "\\angle{VUS} and \\angle{WXZ}", "\\angle{VUS} and \\angle{TUS}", "\\angle{VUS} and \\angle{YXZ}" ]
null
1
math
grade-5
is-it-a-polygon
false
true
Is this a polygon?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABcCAYAAABUbcLiAAANhUlEQVR4nO3dO0ybab7H8d97ceJIBow0SKEAwpEyRxMJ0JnVyZFWwjTnbBe2me0Smp3pJmkyp5tUmW5nmkm6ZBuYcpsh3c42JtIWWWlXJlIiTQpIkJaVjOQ3g6U4+L1s8dgvNrcYeMG370eKHBuMHy6Wfv77//wfK4qiSAAAAAASYbd7AQAAAEAvIWADAAAACSJgAwAAAAkiYAMAAAAJImADAAAACSJgAwAAAAkiYAMAAAAJImADAAAACXLbvQB0n9Bbab5ear4e+Z6...
[ "yes", "no" ]
null
1
science
grade-2
identify-solids-liquids-and-gases
true
false
Select the gas.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAA1TklEQVR4nO29ebQc5X3n/amlq/ft7qvulYQkQCAJATYYGycB4syLPZ45Ic7EyfHx63EyxHHwgjFgSOw32HEyzsQzgx2fCQlxPCbBduzYBrwQExuQWCQksQnQLt1979u3b+9V9bx/PFXdfRftErcw9T2nbvetrnrqqapv/fbnKWVnVogNUYhr+PDxuiJnwb48jFYgrcPbU3K96hPSx0ohrsGGqPw+b9XXqz4hfawkXP5VRX2dujJd8eHj+PBJ6cNz8Enpw3PwSen...
1
math
grade-3
read-a-thermometer
false
true
What is the temperature?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAZIUlEQVR4nO3d0XGjarfm8UdT3/3HPgGcRl8CjScBYBIQRCAUgaUIwBFgJTDA1Zk7qxM4oKqZ2zGdwPhVBJsIRudCLXbb7e7dwkhY5v+rclkGAavvnl61eN/Jfr/fCwAAAEAv/tvQBQAAAAAfCQEbAAAA6BEBGwAAAOgRARsAAADoEQEbAAAA6BEBGwAAAOgRARsAAADoEQEbAAAA6NE/znXjuq612Wy03W5V17WapvnhO7Zty3Ecua6rIAhk2/a5ygEAAAAuYtLnTo5...
[ "55°F", "70°F", "65°F", "60°F" ]
null
2
science
grade-2
read-a-thermometer
false
true
Select the temperature shown by this thermometer.
"iVBORw0KGgoAAAANSUhEUgAAAMIAAAHaCAYAAABSE5ZzAAB3S0lEQVR4nO29e5QcxZ0m+kVVdXdVtR79AD1a0hi9kJB4IyHAgDAP23iYscd4bI+ZWXa8HrOee3Ye3nvW96xnfe/uzNk97D2293Fmxjv27qy9eI7xYo/BBjxzkXnZWIB4yCAM6I3ULRnU3QKpu/pRlXH/yIqsiMyIyIjIyOpqoZ9On1R3fvnVLyIjvi8isjKTUEop2hTT09OYmZlBEAStn0YACjEFAgIKKt3GgACNbQ0ilV/GO9/5LWIu+EGAAimgUCygWCyiWCyiu7v...
[ "100°F", "90°F", "75°F" ]
null
2
science
grade-8
compare-magnitudes-of-magnetic-forces
false
true
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? 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, but some of them are different shapes.
"iVBORw0KGgoAAAANSUhEUgAAAgwAAACBCAYAAACsN+IgAAAiLUlEQVR4nO3dd3wUdfoH8M9sy2bTG2mQYgoQEgidYDgCKIcFCfoD5SyHdERF70D08OT8AfcDC0WlnHCAinAcRxEVGwLSSyiBBBKSQAhJNgU2m7qbZMvvjxw5OSC7szuzs7vzvF8vXpLNzHeewXm++8x3Zr7DmM1mMwghhBBCOiAROgBCCCGEOD8qGBwgMzMTDMPc8SckJAQjRozAoUOHWLWVk5MDhmFw5MgR1nEYjUa8/fbbkEgkWLFiBev1CSHccYZ+wWg0YtmyZej...
[ "The magnitude of the magnetic force is smaller in Pair 1.", "The magnitude of the magnetic force is the same in both pairs.", "The magnitude of the magnetic force is smaller in Pair 2." ]
null
2
math
pre-k
fewer-and-more-compare-by-matching
true
false
Which group has fewer?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAHIAAACGCAYAAAAB3t5yAAAGrElEQVR4nO2dWWxVRRiAv9sVulBIFVqWFC1LCwFCIKBWllKIxugLxqCJiZFFQwTEF1/0XaMvKlEgGo0JiUAwMWpCYgBpBRREXFBpaSsp662ALV0u9HrL8WFaLCjSypnlTP8vmbQ3t53/n/numTNz7lliQRAE8SQ0JKC9G1IBQgTIiEF+OkzMgVFZEIt3BcGhNttpCbfD3GGQUZ9QL4qzYHKusiy4T3s31HXCuSQcT0BaW0q9IRKjRX66cgbQ0Q1p3X3eEKJFr7M...
0
math
grade-8
perimeter-and-area-changes-in-scale
false
true
Look at this rectangle: If the base is doubled, then which of the following statements about its area will be true?
"iVBORw0KGgoAAAANSUhEUgAAABgAAAAOCAYAAAA1+Nx+AAABMklEQVR4nN2UsaqCYBiGX/NALQ2RIC3iJnQDDq6BLQ2tBYG4eAGFbm3qLYg34ZhzITh1B26tuTRIoO8ZzkEITocT2HIe+IYXfv4H3g8+gSTxRnrv/LwVeJ4HQRAeZj6fdycAANu2QbKdw+HQreAVJEnCdrvFdDrFaDSCbdtIkgS6rmM4HGI2m6Esy6/HJOm6LkVRpCiKnEwm3O12rOuazxiPx1ytViyKgkVRUJIk6rrOPM95vV5pGAbDMCS/62ipqoqn04mKojAIgl8...
[ "The ratio of the new area to the old area will be 4:1.", "The ratio of the new area to the old area will be 3:1.", "The ratio of the new area to the old area will be 1:2.", "The ratio of the new area to the old area will be 2:1." ]
null
3
math
pre-k
count-pictures-up-to-5
false
true
How many reptiles are there?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAACbCAYAAAAX3e8+AABdQElEQVR4nO3dd5xc533f+89zpvfZ3ZntvaA3opIE2KsKRcnqkmXLcmJZjhw7jn2TG1/bV4pvcuObxI4UWVFcZVmSJVtWoSTLEkWKnSBAEr0ttvfdmd3p/Zzn/jGLBUAUEiSWBBa/9+tlGTtz5pwzM9/X/B4+zznPo7TWGiGEEEIIIcSKYLzVJyCEEEIIIYS4eqSBL4QQQgghxAoiDXwhhBBCCCFWEGngCyGEEEIIsYJIA18IIYQQQogVRBr4QgghhBBCrCDSwBdCCCG...
[ "2", "4", "3", "5" ]
null
2
math
grade-5
angles-of-90-180-270-and-360-degrees
false
true
What is the measurement of this angle?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABsCAYAAABQF8VPAAALEUlEQVR4nO3da3BU9RnH8d8SbkE2NIhNIXiZEqqpVAUdkilIHC9YoFMVISM62HARyUgAg9QaMcjFqNxELmKsxNQUpeFSHCsoQgdQnCStBjQQ0yROEYPuNMMObCCBQE5fxEQjmTqa3T3nf/b7ecXAmc3z8svOyfN4LMuyBAAAACAoOtk9AAAAAOAmrYG9fXOxKg/X2DkLAAAAYLzOLX+oO1mvSb9dop7eaN0w/BcadvMgDb/tV/LGRNs5HwAAAGAUz7ffwR59/WM66T/...
[ "270°", "180°", "90°", "360°" ]
null
2
math
algebra-1
compare-linear-functions-graphs-and-equations
false
true
Function A and Function B are linear functions. Which statement is true?
"iVBORw0KGgoAAAANSUhEUgAAAjcAAAGlCAYAAAAGbtd7AABRV0lEQVR4nO3dfXyT9bk/8E+SJk2atLQUWh7KQ1tXRAsUAVtUZKAIyJxTC0w9yjibbHvJpk48c+4Mj575MI9O3UQ96NH57GRsPO0g+1lAUCgVJ1gVipIWWmpTKA1Neuc5398fnMQWSpP0vvP8eb9evKDJnStXwpVvr9xX7twqIYQAERERUYpQxzsBIiIiIiWxuSEiIqKUwuaGiIiIUkpYzc2QIUOgUqnO+Wffvn1RTjN8f/rTn6BSqVBRURHz+37//feDz8lFF10U8/s...
[ "The slope of Function A is less than the slope of Function B.", "The slope of Function A is greater than the slope of Function B." ]
null
1
math
grade-5
identify-trapezoids
false
true
Is this quadrilateral a trapezoid?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAcbUlEQVR4nO3dWXCcZWLu8adbrVZvkuUNDcbgMV6wBiFsWbLlfZONwWa2VHJuzmUmU5VJcpHMVWYuT1J1qk5SlapUamaSFOScSuUGs9iGYYBh3wYMhgFnDPYY8NiWW7tkLS11S30uZElffxLdWrr7637f/++qG8v4LWSKh399ftuXTqfTAgAAAJAXfq8PAAAAAJiEgQ0AAADkEQMbAAAAyCMGNgAAAJBHDGwAAAAgjxjYAAAAQB4xsAEAAIA8YmCXic6OpB7/Rac+PDf...
[ "no", "yes" ]
null
1
math
kindergarten
fewer-and-more-compare-by-counting
true
false
Which group has more?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAMJElEQVR4nO3dz09bVx4F8GNsbAjYDD9Kk9Ck1IGSdllFZVE1mYRWyqKjdiLRVu2fNprFdGZRpCqVOlUVNSSlkbpo1FapVEVQGA9JgDIQINj8sA3mzYJaQkkJtt+Pc2/u+WwSFOH3PbHPe/azfV/M8zxvsQzMbAGFCrDrQURCkogB6TgweAx4PgnEFkuedzvPHkvEPcMZIDG9tf/DiSQw1LbfThEJR6ECTG0Cv5WBX7eApvzu/j+ofCLhS8f3uwYAGxWgqXLgH0Q...
0
science
grade-6
identify-elementary-substances-and-compounds-using-models
true
true
Look at the models of molecules below. Select the elementary substance.
"iVBORw0KGgoAAAANSUhEUgAAAKIAAAAiCAYAAADcQgLDAAAJ+0lEQVR4nO2beVhU5R7HPzOOOsCwS8oiaMrFXEJBFBdQEUXIcAlQy6TcKHdRU69mZco1TQzDG8m1cskULRXNHZUg1BABEZdMZUeZYZlhCWkY+gMZJdm83fswf5zPX+d5z/v7fb+c8z0v74HniKp3rKhBQKCVEdWUK4UgCrQ64tY2ICAAQhAFdAQhiAI6gRBEAZ1ACKKATiAEUUAnEIIooBMIQRTQCYQgCugEQhAFdAIhiAI6gRBEAZ1ACKKATiAEUUAnEIIooBNog1i...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAVEAAADMCAYAAADK+ZBrAAAb10lEQVR4nO3deXwU9eH/8dfMbu6EHIT7kkvxQFRARBQo5RDqVUXUFqXfUo+v9aTYarWtrdRS/Wq/WPnV6s+LorWoVdFKEfEoVEFAgoCKyn0pSchJSHZnPvP9Y3Y3CYeEDpBA3s/HIySZ3Z357D42L2ZnZmctwEOkkS0p8zghA7JCjT0SkX2rcGHNLtgegdwwnJPjT7cbdVQiMQqoNHVZIf95ClDp1k5XRKVJUEDlaBB/nkbrvH5XREVEAlBERUQCUERFRAJQREV...
0
math
grade-4
sides-and-angles-of-quadrilaterals
true
false
Which quadrilateral appears to have exactly 2 right angles?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAOC0lEQVR4nO3dX4xU1R0H8O+9szO7ICPIggvpaqVmEUzwD2j882BMDRLU2hiN1ZfGELUv2qaJ8aXqQ9UXQtJY+1SN+qYxItVa6UI0jW2kWlFxEwG3uq1ds6zsCjLssjOzM6cPdw5zd/bf3Jm593fmnO/nBdhll8twvszM757z+3lKKXWsAPx7EsiVgGkFIopJhwdkU0DfUqAnA3jH8kp9eEr6sojcc825QMfgZPCLtRngknOCdBJRPHIl4OgEMFIAvpgE/FPTwSc...
1
science
grade-4
identify-minerals-using-properties
true
false
Select the one substance that is not a mineral.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAANcAAAEGCAYAAAD2aACLAAC7rUlEQVR4nOz9V9BtSXbfB/4ytzv+8+baqlvetAUbbMKIQNCOqFFgJGoUDL1JEXrRSEEp5k0xoWc+aPSgmJkISpQoijMjcUAHAhQBtNDdINhsAI32prq63PX3ft4cu13mPORe++TZ93y3qrpvdTeqKyu+Ove4ffbOnSvXWv/1X2upr5xZ+2IX+gEfjY/GR+OHGMMSXh/DgwzWQvjlVfe6/kiwPhofjR9t9AN4sev+PSrnr+uPBOuj8dH40YfIUW7nr+mfzKl8ND4...
0
math
grade-4
sides-and-angles-of-quadrilaterals
true
false
Which quadrilateral appears to have 4 right angles?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAACuCAYAAAAvfwH9AAAH40lEQVR4nO3dTWgUZxzH8d/Mbl7YahI0mhob36Dbs1SboyCEnERE6KXiqQREVKR46qWnXkSKQhHEW730IB68WQr2JGqhR2uUqtX6QrEkUYMmuzs9zI4ZKU1Tzcz/eZ79fk6KoBNmvpns/DYmSpIkeTwn3Z6VnjWlRiIABalG0sqK9GFNGuqWosevkuTajPVhAZ1ntE+q3ppNf7OuW/rovbROAMV41pRuvpAezUmTs1I800j/gPiA4q2spK1J0vOmFDdzfwCgeFl...
2
math
grade-3
open-and-closed-shapes
false
true
Is this shape open or closed?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAAMCElEQVR4nO3da2yVdYLH8e+Uw6WFMnbSJu0kh4Si7SBMqCQDZhGWNSBxsTpCAS+ogNzpoCgicnFUUNGqGAEB5baKO2pB46KTgDM7K2oysFksGdCACgndDM222RqQQu1p2ReOrJdRuTzPefq03887ePH8v/Dqlyfn/M9PTp8+fRpJkiRJgciIOkCSJElqSxzYkiRJUoAc2JIkSVKAHNiSJElSgBzYkiRJUoAc2JIkSVKAEuk66N39e2huaU7XcYFKdEhwxaWXRZ0hSZK...
[ "open", "closed" ]
null
0
math
algebra-2
match-exponential-functions-and-graphs
true
false
Which graph matches this equation? \[ y=-4\left(\frac{1}{3}\right)^{x}-2 \]
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAVUAAAE1CAYAAABX+HN0AAAeJ0lEQVR4nO3df3BU9b3/8ddufmzID1iVJCiVELAlQxADUQjWEmMHAZX5Co6iXGwlakcLTGeqdy54xxtn2gI6lLnTyyj1F9KhItcf4zVYBFvCiN8mIMhqgQlQITBifgmEQEI2yebcP/buJoEASTi755zN8/EPZ3fP2c97c9jXnl+fz3EZhmHUtEr/bJbOBqR2QwCAXop3SWlx0g+TpcxEyVXjN4xdjVaXBQDON3mwFH+4Ofjg+kRpTEowcQEAvXM2IB1skqpbpUP...
2
math
grade-7
parallel-perpendicular-and-intersecting-lines
false
true
Are these lines perpendicular?
"iVBORw0KGgoAAAANSUhEUgAAAGwAAABaCAYAAABdRbN9AAALvUlEQVR4nO2de1SUZR7HP8NFxIwMVEAldS1ojW3RoVpgC49YZouWu5qXdL2BSiZ4DcnLiJlKYiuUN0jUYyqWXY7QqmcdT9aC/aHCnsSEPMkyCR4Fjo3KgMzw7B/s6ABqIO/7zjs4n7+GubzP7/A9z/N739/leTRCCIETh8HF3gY4aRtOwRyMJoLlZedwNHOfvWxx0gqaCPZYcCD7l29gQfCLFOedtJdNTu6BpvlNR1xAGOb6egBCXh7CuFUL6P5YL7sY56QlLXzY0y+...
[ "yes", "no" ]
null
0
math
grade-7
similar-and-congruent-figures
false
true
Are these shapes congruent?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEYCAYAAABm04EsAABnRElEQVR4nO3dd3yNd/vA8c/JXjIIMYokYkvsERnE1tpCiFJ71yoPpUtRqrS0qjbV1p6lRlExYs+kIoTEjhGRRBKZ5/z+CKf1i7YSJ7lzTq736+X1PLnPPa67Tx8u33N9r0ul0Wg0CCGEEEIIIXTCSOkAhBBCCCGEMCSSYAshhBBCCKFDkmALIYQQQgihQ3qTYPfr1w9TU1MsLCywsrLCw8ODffv2KR2WEEIIIYQQL9GbBDs0NJS1a9eSkpJCYmIiI0eOpHv37qjVaqV...
[ "no", "yes" ]
null
0
science
grade-3
identify-rocks-using-properties
true
false
Select the one substance that is not a rock.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAANcAAAEGCAYAAAD2aACLAAEAAElEQVR4nOz917Nt2ZXeif3mXH6t7c3Zx1/v0gMJD7AMq8giGd0tkopmtxRSdzBab3rS36BHvSoUoQhFKPTACDFIRtOqqohioVBIAJkw6a+/93i3vV3eTD3sc+/NBLIKJJBZSID3i9hn7bPN2mvvNb81xhzzG2OIH0+VuuFBWeM5nuM5fgnMc7jvw2kCdR2+VVs+Lp8T6zme41dDWYMb3vL+In/2uHxOrOd4jl8dT3iUqmeP6Z/0wiQO/yaO55eGEOIXvKL4Gzm...
0
math
grade-2
symmetry
true
false
Which picture has symmetry?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAyRklEQVR4nO2de5Acx33fv/2YmX3d+w4HHl6kjgRJAOJTpEQpkq1IERU7KduJSD/KrnIk+w87qUpZqcSpVJzYTuyyyxFVtstSno6jVGJHphJLpmNSdiRbskQZEkWKJEgCAkjicSCeh7vb29fMdHf+6O6Z2b29vd27A+bu0J8q4LB7s7s9i/lOd/+eRCmlLoTAyTpQFUCs4HA4rhOcAEMMuKMETPsAudBS6uhS3sNyOG4+3jkM8O/W9YNbfODOslanw+G4PlQFcLw...
1
math
grade-6
rational-numbers-find-the-sign
false
true
The number line shows an unknown number, x. Is x positive or negative?
"iVBORw0KGgoAAAANSUhEUgAAAlwAAAApCAYAAADgbPfrAAAGFUlEQVR4nO3dX2iT5wLH8V/SJc0Si8bObl60OIZno8etxxljKr0og111ssYJBy8mHgQ5ipeCF7vZRRG8PShHwYuDYOfFqB5UOLDBFjtGkjYtZcFWO7Br5VDr0dqzpvnXmnMxm62rbZKjb56k/X6u8r55Kb/2pfDL8z55Hlsul8sJAKpId3e3bDabDh48aDoKyoR7jmr3iukAAFCqiYkJ0xFQZtxzVLuiC1c2m1UsFlMkElFDQwOfMgDgJesPJzR6J6kHk1m5XHZt3FQ...
[ "negative", "positive" ]
null
0
math
grade-4
what-decimal-number-is-illustrated
false
true
What decimal number is illustrated?
"iVBORw0KGgoAAAANSUhEUgAAAKQAAACkCAYAAAAZtYVBAAACcElEQVR4nO3bQUocURSG0WpxLa4oCxGCqxAhC8mKsplymoHVokXqfZecM1Su9ODj0YPf277v+wYRD6s/APxNkKQIkhRBkiJIUh7v/fL29nTV5+A/s//88+HPD19IMbLC3Rdy27bt+cfLt/7wr9+vbr9we/RifOb29jTq9rOHzndIUgRJiiBJESQpgiRFkKQIkhRBkiJIUgRJiiBJESQpgiTldvRfh+Zn/EtHSyHzs8jtpAnZmVvzM0YRJCmCJEWQpAiSFEGSIkhSBEm...
[ "0.54", "0.57", "0.76", "0.56" ]
null
3
math
algebra-2
find-solutions-using-a-table
false
true
Look at the table of values for the functions $f(x)=\frac{1}{4}|x|$ and $g(x)=2^{x-1}$ Based on the values in the table, where does the equation $f(x)=g(x)$ have a solution?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAEWCAYAAAAThOOMAAAhv0lEQVR4nO3de3RU9f3u8SfJkBsEQkBIhEKCXAXFUImeFINicSHIJRXTUo24grAs8GN54CgQKkTEtHCsl1pRcSkgq3hhiRgwClLUBikXrQkqoP40QjkORCCQe8JM5vwxJBBJwuCPzDfz9f1ai7XYe4bZz0z445lvPnvvII/H45FBv8o6afLwPlszM1Lpf6swHeOCAiVnYz7KijYdAQAAIOAFmw4AAAAA4NKh4AMAAAAWoeADAAAAFqHgAwAAABah4AMAAAAWoeADAAA...
[ "x=-1", "between x=-2 and x=-1", "between x=-1 and x=0", "x=0" ]
null
0
math
grade-8
identify-trends-with-scatter-plots
false
true
Does this scatter plot show a positive trend, a negative trend, or no trend?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAFhCAYAAABK/t0lAAAlOklEQVR4nO3dfXDU1eHv8U8CItmgyU1ILJCUzYBZasLNpkEDMjVBvR2pBkNnbGjtryIPpdJqUbBix5ZU0KbVllgqPrRFfGgbW6pIHEuvCqGWC7FsWcZgCbXdheXJCLIISZACe/+gpMZkI2TPfr/78H7NOMN+zybnE4Kzn5ycPd+UUCgUEgAAAAAjUu0OAAAAACQSCjYAAABgEAUbAAAAMIiCDQAAABhEwQYAAAAMomADAAAABlGwAQAAAIMsK9jHjx/X8ePHrZoOAAA...
[ "positive trend", "negative trend", "no trend" ]
null
2
math
grade-4
decompose-fractions-into-unit-fractions-using-models
false
true
How do you write 6/11 as a sum of unit fractions? Use the fraction strips to help.
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABsCAYAAABQF8VPAAAIV0lEQVR4nO3d32/ddR3H8ffZznbWmv3AdXH8EolEKFx4o4EhiIFADKSQ4YUhGi6EGwILE8wIg4hhRjODBKKAMQtX/gFIYCTCYDEhuq2NE71jsLkwggti6aG0Z6c9x4vJUjZ+dN2n/b7bPR43Ped8e3qeORfNKyffc06t2363G4d+GzGyK2LivwHAPFA/I2LFpRFn3xVRX111DQBT1LpvPtCN4R1VdwAwE6uuiTj/51VXADBFPZp7jl465/aInvOrrQFgesb2R7y1LaI...
[ "1/11+1/11+1/11+1/11+1/11", "1/11+1/11+1/11+1/11+1/11+1/11+1/11+1/11+1/11+1/11+1/11", "1/6+1/6+1/6+1/6+1/6+1/6+1/6+1/6+1/6+1/6+1/6", "1/11+1/11+1/11+1/11+1/11+1/11" ]
null
3
math
grade-1
subtraction-sentences-using-number-lines-up-to-10
false
true
Which subtraction sentence does this model show?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABhCAYAAADsidaRAAAWm0lEQVR4nO3de1BU590H8O9ykyBXFVRaAmIGjIaAlwhoUy8ZjWkuahOJZpxAUmNqmrHRvo4xSSea0GqaJtGJnUxM3qmxKY6KBWNSR2dUwLdcRdAqozbigmTBuuCS5Sas7PvH8SwLiLDLYZ9zlu9nhtnds8z6++mu57vPec5zdFar1QoiIiIiIlKEh+gCiIiIiIjcCQM2kUDNFuC7amDlCcD7C2BLqeiKnMM+1MVd+iAi0iov0QUQDWeZlcDr/wd0ArBoeLIW+1AXd+m...
[ "7–4=3", "7–6=1", "8–4=4", "7–5=2" ]
null
0
science
grade-2
classify-rocks-and-minerals-by-color-and-shape
true
false
Select the light gray rock.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAADwQUlEQVR4nOz9V5BmeXreif2ON9/5vE2fleWruqrdzDR6DGYADEFgSQo0q1BshK7Fa12vdKFQ6EIh6UIRUixXlJaiGKsIUtwlsUsCIAaD8T3dPe2rqstmpc/P++OtLk5WtZmeniEGsxiA9UZUfFmZ53Pn/J/zf83zPq+QZVnGM3tmz+wzTfyr/gDP7Jn9OtszgDyzZ/Y59gwgz+yZfY49A8gze2afY88A8sye2efYM4A8s2f2OfYMIM/smX2OPQPIM3tmn2PPAPL...
1
math
pre-k
rectangles
true
false
Which shape is a rectangle?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAALuElEQVR4nO2dW3BdVRmAv7X3PidpcpI01ya90RKgBXHwAlYol7Gt43AVBvEGI+M4ziAO6siTDzLM6PiAbzCC48ioOIxjO6L4oNwqIAUsoKLQ0pRCQ0uTNM2laU7SnJOz1/JhN2NFLs2+733+b6aTZtLkrHR951//+tdlK2OMGanCvlmYdqFmEITAOApabDizCZYVQY1UjHnhWNLNEvLMhlZwXp/1Pukrwrpmz0JBCMq0CwMzMFyFvbNgHat5XxDJhDBpsT2nAMo...
2
math
algebra-1
compare-linear-functions-tables-graphs-and-equations
false
true
Function A and Function B are linear functions. Which statement is true?
"iVBORw0KGgoAAAANSUhEUgAAARAAAACZCAYAAADnwmWxAAAbS0lEQVR4nO3deVwV9f7H8ddBEYMQlUVAQwTKjRT1FJqJe6Y80kwwyTBNvWaW6U/zumvZIi65lma31Mwlt7S8dDULt2uilmmaayK5cXGXgyJy+P7+ICaPLMIEZwQ+z8eDh/Kd7XNg5s18v2fOjEkppRBCCB0cjC5ACFFySYAIIXSTABFC6FagAPHw8MBkMuX59csvvxRzmQW3aNEiTCYTISEhdt/21q1btZ9J48aN7b79suDgwYP57ouVK1c2ukQbvXv3xmQyMWTIELt...
[ "The y-value of Function A when x=1 is greater than the y-value of Function B when x=1.", "The y-value of Function A when x=1 is less than the y-value of Function B when x=1." ]
null
1
math
grade-2
identify-multiplication-sentences-for-equal-groups
false
true
Which expression describes the model?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADXCAYAAAAgGib5AAA8xklEQVR4nO3de5AsZ30f/O/cL3uZ2dnZ2dmZ3SPpSAf0ChOU0pElyw4ukCCCvEoRO69wbAKOQWWcVBIgFQeCYxsiBaUIuckpO0aVSsJrG2xIqHLZkUEEI2QZgWTJpkwkHXSOztmd3dnbzM7s3HYuPfljmT7dM7O7c+mnn758P1WntLM6Z/rpp+fb/Zvup5/2dLvdLoiIiIiIyBBe2Q0gIiIiInISFthERERERAZigU1EREREZCAW2EREREREBmKBTURERERkIBbYRER...
[ "3×1", "3×3" ]
null
1
math
grade-1
names-and-values-of-common-coins
false
true
Which coin is this?
"iVBORw0KGgoAAAANSUhEUgAAAJkAAACZCAYAAAA8XJi6AABYoklEQVR4nO29bWxb55k2eIm2KM9KomjK+nBIUzRt2u84ogKbCtTIjj9qxLv2tElnDdUpGvRdLzABmiY/+gbedAPszzfTbJDtizdpBpsFNphBisYVjJ2mrb2bwrGd2G6MmDYiuZ6NZdMUTcaSKNEURe1ElE3tj+dcD+/z8FCW2yRNMnMDAime73Ouc39/1C0sLODf6d/p86Tlf+kT+EvS7dvzjm/Y+PgEAGB6Ig3X2DV8nB533H5joAPlznUAgJb2ADo62qvWWb68vu6...
[ "dime", "penny", "quarter", "nickel" ]
null
1
math
grade-1
rhombuses
true
false
Which shape is a rhombus?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAADvklEQVR4nO3avW4UMRRA4bObnwICdCAeACgpeQyeldegowzQE9psiJSQ1VAMQUnI/85c29fnSJZsWbJu8WmqWQzDMBycwvdjWK3hbMBs47YX8GwL3jyBV7uwODgZhs+HpceyzH14DtvfjsfD611493RUaLZpqzXs/4Ifp/D1GJaHZ+OFyGzKnm2NpgCO1rBcX7gwm7JzU78HWJYdxXpJaBaS0CwkoVlIQrOQhGYhCc1CEpqFJDQLSWgWktAsJKFZSEKzkIRmIQn...
2
science
grade-8
identify-ecosystems
true
false
Select the prairie grassland ecosystem. This ecosystem has: warm, wet summers and cold, wet winters soil that is rich in nutrients only a few types of trees This ecosystem has: long, cold winters and short, cold summers mostly small plants soil that is frozen year-round This ecosystem has: hot summers and cool winters ...
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAp8AAACtCAYAAAD2xRSHAAEAAElEQVR4nOy9d7gkV33m/zmVqzr3jTN3kjSjgFBEIMBgcngM2NgkGRMeDAazLE4YecFmwYBtwBjDIsuAsRHRacEG/xZsr8EEmWQJBSSCwkgTb76du3L4/VFdPXV7+o6EA2Ktep+nn75d4ZxT51Tffuv9JnF9N0nOK0FFpkCBAgUKFChQoECB/xT0I7h9CKIXJklBPAsUKFCgQIECBQr8Z6MfgUiSJLm/B1KgQIECBQoUKFDggQEl/6G9cQ9JkoxfQgiEEEiSNP4...
2
science
grade-5
use-data-to-describe-climates
false
true
Which statement best describes the climate of Cairo? Hint: Summers in the Northern Hemisphere occur in June, July, and August. Winters in the Northern Hemisphere occur in December, January, and February. Cairo, Egypt, is a city in Africa. It is located in the Northern Hemisphere. It has a dry arid climate.
"iVBORw0KGgoAAAANSUhEUgAAAtgAAALOCAYAAACTXGSDAADxm0lEQVR4nOzdeXxU9b3/8ddsWSbLZN9Iwk4gECBsgbCJLGIRlMUqVSvVetXW3+X22ttaa++9D3tre9tre2/VLnYRt7qg4BIIqMiuhAAJIZBACIEskH2yTJZZv78/QobEBAgyyQT9PB8PHiRnzsz5zJyZyXu+8100SimFEEIIIYQQwiO03i5ACCGEEEKIrxIJ2DeA3bt3o9Fo0Gg0TJkyxdvliK+hDRs2oNFomDx5skdur62tjV//+tdMnTqV4OBgfH19GTVqFE8++SR...
[ "Winters have lower temperatures and more precipitation than summers.", "On average the winter months are colder and drier than the summer months." ]
null
0
math
grade-7
describe-a-sequence-of-transformations
false
true
What combination of transformations is shown below?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEyCAYAAADA5Kd8AAAy4ElEQVR4nO3dd3RUZf7H8c+kh1QglAwJAQJIFwhFmoAiSEDpoogUUVdWQVfdVVAUFMv6W5Rdu6JiQwEVkCYgvQshSAk1QBKYhBJI75P5/ZFlVkRCyk0mCe/XOZ4Tbu59vt8Zc8585p7nPo/JZrPZBAAAAMAQTo5uAAAAAKhKCNio9N6dtV//mhnp6DYAAAAkSS6Xf4iPj5fFYnFkL0CxRezI1m97sgt+johwcDcwitlslsViUVhYmKNbAQCg2OwBOzAw0CEfaBEREdS...
[ "translation, then reflection", "reflection, then translation", "translation, then rotation", "reflection, then rotation" ]
null
0
math
grade-3
identify-unit-fractions-on-number-lines
false
true
What fraction does the number line show? 0 1
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAAoCAYAAADE3o01AAADVUlEQVR4nO3dMUhbeRwH8F9CiqmLFWdBKCLSznaMOjjVVXB0EVzLgaMRKijcldLJyUkdOhWqtJvpIKGDkzjYW6riJE4KVqnmhlJvOFqPu5f8k/TzGR9v+A4/wvf9eO+f3NraWi2Xy8Xk5GRAvayvr4c5o97MGY1gzoC7FI6OjlJn4BdgzmgEc0YjmDPgLvnUAQAAoJ0UUgegvVX2KzG/MR8fP3+MiIj3f7yPuadzMTwwnDYYAECd2GBTN+W35Rh5MRKVT5W4uLmIi5u...
[ "1/5", "1/3", "1/4", "1/2" ]
null
1
math
pre-k
circles-squares-triangles-and-rectangles
true
false
Which shape is a circle?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACbCAYAAACao4KyAAACjUlEQVR4nO3VS47UZhiG0a+qL4q4JLO0kjmwBFbBXlhK9pJdsAMgY9JMu6EFTZfMwELKvEpPRcU5I1uWf72DR/ZmWZbl+n7mn7uZ293MwzKwt/PNzNOzmWePZq4uZzbXX5flzc2xZ3HKXv46c/7+br3543LmxeO1QtjX7W7m7eeZf+9n3t3NbG8e1gci45Cenq1Nzcx82s1sd/95AIf0o6lvy8z2uFP4WQiNhNBICI2E0EgIjYTQSAiNhNBICI2E0EgIjYTQSAi...
2
science
grade-7
identify-ecosystems
true
false
Select the tundra ecosystem. This ecosystem has: year-round rain and warm temperatures soil that is poor in nutrients many different types of organisms This ecosystem has: long, cold winters and short, cold summers mostly small plants soil that is frozen year-round This ecosystem has: warm summers and warm winters a ra...
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAp8AAACtCAYAAAD2xRSHAAEAAElEQVR4nOz9eZwlVX3/jz/Pqe3uvff09Oz7MCwjOwgCsmiCigsKMYo/YhSXaBSVBIIJXxOj+DFEP6AhGiOKJEa/GsUvGoMg+74NDAzMvk/39N5991rO+f1RdW/37enphmlgVOo1j5rT91adU6eW+6hXvZfXWzw2qvWqNGQNYsSIESNGjBgxYsR4RZAPYGMRxJivdUw8Y8SIESNGjBgxYrzSyAcgtNb6cE8kRowYMWLEiBEjxmsD5sQPH/3pyKwG02JW3dFqlgP...
1
math
algebra-1
linear-functions-over-unit-intervals
false
true
How does h(t) change over the interval from t=7 to t=8?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABvC0lEQVR4nO39aXhU550u/N6rRg0lqYQEEghLTAZbIAkDAjMZMMQmJnEbkjRO3gzu10lvZydxOufd3Sfdb3au3dk+3rlOpjduJzvb3Ynt9Ond6biD3TFYYDAYiLARyCCQwCAL0ABoKKlUqmHVGmqt80EuIYlJBetRVUn37wuXCq1//bVW1bPueuqpVZJpmiaIiIiIiMgStmQ3QEREREQ0kTBgExERERFZiAGbiIiIiMhCDNhENMKWLVvw2muv3fD/3n//fTz44IPQNA0...
[ "h(t) increases by 200%", "h(t) increases by 1", "h(t) decreases by 1", "h(t) increases by 100%" ]
null
1
math
grade-3
open-and-closed-shapes
false
true
Is this shape open or closed?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAAOLUlEQVR4nO3da0zUZ6LH8Z84ZwKimc14MhshxPBCTkLILqFqadPatNb1gtKqeK2XrdtV693VqlBFQYVqadVWXXW7dr3Vu1YUq2ttU9tdOdgSdkPYZHwx6xIwma6TzK4ImYxwXnisx9PW6/8/z8zw/bzkxf/5zrz6QZhnunR0dHQIAAAAgCUSTAcAAAAA8YSBDQAAAFiIgQ0AAABYiIENAAAAWIiBDQAAAFiIgQ0AAABYyBGpg7w11Wq/eTNSx1mqq8OhPv2eNJ0BAAC...
[ "closed", "open" ]
null
0
math
grade-5
mean-find-the-missing-number
false
true
Carson has the following data: If the mean is 30, which number could c be?
"iVBORw0KGgoAAAANSUhEUgAAAOcAAAAkCAYAAAByiC06AAAGvElEQVR4nO2de2xUVR7HP3NnOqWd6WOmLZUChSJsH7TyfrWUl7zc2sYUjUhWoxQhGpGo6GpWzWYDZnezwWQxsCZEcXddXUQeWpsFSpq2Li1Pa3k4WAqllELbobZlplM7c+f6R2F0KJpt5k57uz2fP3/33nM+mZzvvfece2dGpyiKAuD2enF6ZLyKgoJAIOhPdICk02Ey6AmRpJ6aoihKp0fGJcsDaycQCAAI0+sJN+gxuL1eEUyBQEO4ZBmDpEMSwRQItEeXLCN5vGK...
[ "25", "31" ]
null
1
math
pre-k
count-scattered-shapes-up-to-5
false
true
How many stars are there?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAE2CAYAAAAUKOa6AAAa/UlEQVR4nO3dZ3ic5Zno8VuS5YYrxQWDwcbgBIdm00wMmB5KKIeSBAIhIZues0t2YUlZIGWBbPbs7tnslZzkIhuWEAix6YbQ3MCmQ2ihWXKRbYwNWG5YsmRpzgdHBozVZ/RqHv1+n5Bm5p37uvzlr5d7ninJ5XK5AAAAklCa9QAAAED+CHwAAEiIwAcAgIQIfAAASIjABwCAhAh8AABIiMAHAICECHwAAEiIwAcAgIQIfAAASIjABwCAhAh8AABIiMAHAICECHwAAEi...
[ "5", "1", "2", "3" ]
null
2
math
pre-k
one-more-with-pictures-up-to-10
true
true
Count the dots in this group. Which group has one more than the group you counted?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAFACAYAAACGDgu2AAAdNklEQVR4nO3dfYydZd3g8d85Z8689MxIKS2lEegbLSIYgZLyWBAwNpoAwU0MVZLGdcn6YMK6G3TX7B+smiBGNivRPpIV1+VJ7KYmQiILRmljCaHdMTWAK0mFTimUAm2BTivbeX85Z/+g+HSgLfNyn7lf5vNJmv43c929Ljjfc53r3Hep0Wg0AgAASEQ57QEAAECRCGwAAEiQwAYAgAQJbAAASJDABgCABAlsAABIkMAGAIAECWwAAEiQwAYAgAQJbAAASJDABgCABAl...
null
[ "iVBORw0KGgoAAAANSUhEUgAABDAAAAFYCAYAAAClCwyGAAAuRUlEQVR4nO3df5DdZZ0n+s85p0866e5AEwIhK5AfkCCSKZWkgsYM4DWrtwRH3S3C3Kk4KrOCc121kNGauuudubXKzOru6JILpWEUd4kXasGqUWLdhVziciGTmVACJXUj0CEQAiQB0h2wT//uPuf+EYIEktA/Tvf31+tVlep/YvfzzvNw7Of9fb7fbykiGgEAADRFo9GIg8MRT/dH9I5FjPptG2BSWkoRcysRy9oiFsyKKIUCAwAAmubgUCMe/l3SowDIl0tOiWh...
1
science
grade-4
read-a-thermometer
false
true
Select the temperature shown by this thermometer.
"iVBORw0KGgoAAAANSUhEUgAAATAAAATFCAYAAAAnnIr+AADgiElEQVR4nOydd3jTVhfGXznOTpzFymKvJKxAgUDYI0AppWWX3QJtvw5WKXTSFugGCi1tKRQoXexR2rIppcwAhbDCDiMJBJKQxBlk2ff7w7GwbMmWZDu20/t7njyKpat7Xh1dHR1dXUnMoB0gADCkwTtoV/MpzDzyGKTQMKAdRjT6AE0CO8KNUeJGfhK2pnyKE/e3mZStp2qNPpEvonlIDwR7haOoLBe3Cs5h0/WPcOHB32w5Tzdf/NxbDQUUuPcwBS8faISn689C78j...
[ "103°F", "105°F", "104°F", "95°F" ]
null
1
math
grade-4
measure-angles-with-a-protractor
false
true
Is this angle acute, right, or obtuse?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEVCAYAAADaTZLyAADj+klEQVR4nOz9Z3RU25bg+f4jQhEh7733DiGLNwIBwnvvjr+ZlZnV3a+r+70x+surutXmjVFVXd2ZVdV587rj8V7CCA8SIBAgIZBD3nvvwke8DyHtg3BHgHCH9RvjDI7C7L1CSMGMueeaU2axWCwIgvBB+v3vf8/vf//7970MQRAEQRBegUwE2ILwYaqvrycsLIy6ujpCQ0Pf93IEQRAEQZgk+ftegCAIz/d3f/d3E/4UBEEQBOHjIDLYgvAB6u/vx8/PD61Wi62tLW1...
[ "right", "acute", "obtuse" ]
null
1
science
grade-2
identify-solids-and-liquids
true
false
Select the liquid.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AABRH0lEQVR4nO2dd5xdZZ3/3+fc3tv0nkkmlYSQkBAIhCCIdAVBReyAqKwFxd9aFt0VbKvurq6roq4KgijSQaSXEEJCSAjpfXq9c+feO7eXc57fH2fuzNzpmUzCsN736zWZzL2nPOecz3nK9/t9vo+0NSzEAhs4dBQocFKJKHAgBp1p8OjhbLf2uVwQZIG3C4cOFti0/0eVoc/lgiALvJ3k9JcRQ5/Jb09RChQYn4IoC8w6CqIsMOsoiLLArKMgygKzjoIoC8w6CqI...
2
math
grade-7
rational-numbers-find-the-sign
false
true
The number line shows an unknown number, b. Is b positive or negative?
"iVBORw0KGgoAAAANSUhEUgAAAlwAAAApCAYAAADgbPfrAAAGPklEQVR4nO3dT2yUeR3H8ffTdobaUqGJBYHwJx6EVJIGaEtLiLLRuAdELOEgF+RgiBAi8bDgxY1Rg4smXIS4JFwksXIqIgkbTIwZiEn/gk0aCkalgPwrQpaltX+mnfEwnenW0m0rOzx9yvt16cwzT5pPM03z6e/5zu8J0ul0GinCGhsbCYKAPXv2hB1Fr4nvuaSoKQo7gPSq7t27F3YEvWa+55KiZsaFK5lM0tHRQUtLC0uWLPE/S2k++/A+XHkfHt2Cx7dg6Vr4/Fr...
[ "negative", "positive" ]
null
1
math
calculus
describe-linear-and-exponential-growth-and-decay
false
true
How does g(x) change over the interval from x= – 5 to x= – 3?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB1vUlEQVR4nO3deXhU9b0/8Pes2UNCwCQEEwibAgmLBgQTCIIsRlFAi1Xb4rWt4oJ6u1xrvV5tldLHpVertrW1iv219YphUTBQEBAEZYkQSECMAbIQskwyM5nJLGeW8/sDJ00gwAycb85M8n49j0+byZz3fDhn5sx7Ts7MaGRZlkFERERERIrQqj0AEREREVFvwoJNRERERKQgFmwiIiIiIgWxYBNR0L744gtcd9118Hg83f6+uLgYt9xySw9PRUREFF5YsIkoKD6fD0u...
[ "g(x) decreases by 2", "g(x) decreases by 3", "g(x) increases by 2", "g(x) decreases by 1" ]
null
0
math
grade-8
interpret-graphs-of-proportional-relationships
false
true
As a young girl, Edna enjoyed watching her father make things in his woodworking shop. Now that she's grown up, Edna builds wooden furniture for a living. Her most popular product is a cedar porch swing. The graph shows the proportional relationship between the time (in days) Edna spends making porch swings, x, and the...
"iVBORw0KGgoAAAANSUhEUgAAAisAAAI0CAYAAADcLmlmAABRNklEQVR4nO3deXyU9b33//fMZJssJGCAAAKyNAhKWCKbsopysCgFlVuottKFU3u353SxPe1pezx3Xag9vbWVak/r467aWntUfrhRBAVEoFgRQwATEBBJWBMSE5KZJLNfvz9CQjYgCclc1zV5PR8PH22uZJJPvhmSV77XNROHYRiGAAAALMpp9gAAAAAXQ6wAAABLI1YAAICl9YhYmTlzpl577bXGl9944w2NHj1akUjEvKEAAEC79IhYycnJUWFhYePLK1eu1M9//nM...
[ "It takes Edna 40 days to build 8 swings.", "It takes Edna 8 days to build 40 swings." ]
null
0
math
calculus
find-limits-at-vertical-asymptotes-using-graphs
false
true
The graph shows f(x). The dashed line is a vertical asymptote.
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AAB1eklEQVR4nO39eXxT5503/H+0WvIqYxvbGGzCEhITDDhhS3AgDU1oaNNAmyGZadNt+sx0kiad38w8Xe7++rymw2T6TCftnU6aOzN30ySd9m6aTEPaQgwhwSyxw2bAYLMZA16RbdmWrPUsOuf5Q8hgsLFkn2NJ5vN+vXjZlo4+utBy9D2XrnNdBlVVVRARERERkSaMiW4AEREREdFUwgKbiIiIiEhDLLCJiIiIiDTEApvoFrJ7927Mnj0bGzZsSHRTiIiIpiwDT3IkunW...
[ "$\\lim _{x \\rightarrow-6^{+}} f(x)=\\infty$", "$\\lim _{x \\rightarrow-6^{+}} f(x)=-\\infty$" ]
null
0
math
grade-3
identify-three-dimensional-shapes
false
true
What shape is this?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEMCAYAAAD+lMGhAAApYElEQVR4nO3da3Bc93nf8d85e9/F/UZil6BIQrxIoiyRlOXIduJk2jSexE6bZto4bZJJ2rhxMs00o8xk2k7btNM0adOM2+nE07SZdtq8aGzJpNyalh2JIClavIh3CbyIJAiBAIkbSQAESFz22he7Z7EEQBCXs3vO7n4/r+jV4pwH0psf/37+z2NkMpmMAAAAANjCdLoAAAAAoJIQsAEAAAAbEbABAAAAGxGwAQAAABsRsAEAAAAbEbABAAAAGxGwAQAAABsRsAEAAAA...
[ "rectangular prism", "pyramid" ]
null
1
math
grade-1
which-bar-graph-is-correct
true
false
Wendy went to a garage sale and saw six skateboards, two staplers, eight oven mitts, and eight bowling balls. She made a bar graph of the items she saw. Which is her bar graph?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAgAAAAEOCAYAAAD/mq8XAAB6mElEQVR4nOzdeZgcVbn48e+pvXtmMpNksu8bIUAgJISQsEQgATRsGgRFBQ1wAVFcuehPQeWKCIiIXK6guACCiF7wIoLIlgCCAcIOgUAWsq+z9lLbOef3R3UmiWyBJD2Z5HyeZ56Z7qmuOlXT0+ets71Ca61Xx/BmCdolpBrDMAzDMHYhjoA6G0bloY+XPSdWR1o/1da5BTMMwzAMozomdYPeHjhvlLIn+nkwuiaLEAzDMAzD2HUUJLxWhFUxLChlAYDVlma/NJW...
1
science
grade-3
identify-minerals-using-properties
true
false
Select the one substance that is not a mineral.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAANcAAAEGCAYAAAD2aACLAAC2a0lEQVR4nOz955ck+XUdiu7wkd5XZWW5rmo3jemZgeEAIEiARuZKuqJ09bTW1X1rvX+Ma+mLPkjvSiL1RHIRFBxhCDcY34221aZ8ZqU3kZHh4334xTkZ2RiQA9MXIFCBNasHPd1ZmZFxfuecffbeR3p7Esc3c0BBweV1eV1eP8c1C4FHc6DtARUV+P2y+H35MrAur8vrF7sKCnAzJ/7dCpe/L18G1uV1ef3iF8WRHy9/T/7VvJXL6/L6zb8ug+vyurxe0nUZXJf...
2
science
grade-8
use-punnett-squares-to-calculate-ratios-of-offspring-types
false
true
In a group of pea plants, some individuals have yellow peas and others have green peas. In this group, the gene for the pea color trait has two alleles. The allele for yellow peas (E) is dominant over the allele for green peas (e). This Punnett square shows a cross between two pea plants. What is the expected ratio of ...
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAD6CAYAAADUdTPBAAAOPElEQVR4nO3da4yWZXrA8YvhHQ4zA+IcxEMGAemEWqGKg4ZaRRY0cd0vaqxaY1erNIbyxdbExKrfJDVprbZN1jS2drNtNNoQ7MY1NC2tTld37cgoZnUt1kUQHA6yLIcZGN7h7QcQpVBgZh54Z675/RKTyTD389x6ffl788zzjqlUKpUAAABSqKn2BgAAgOIIfAAASETgAwBAIgIfAAASEfgAAJCIwAcAgEQEPgAAJCLwAQAgEYEPAACJCHwAAEikVO0NcKy+vr64++6...
[ "2:2", "4:0", "0:4", "3:1" ]
null
1
math
kindergarten
represent-numbers-up-to-10
true
false
Which group has 6 rectangles?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAARwAAAEcCAYAAAAV9AvgAAAE3UlEQVR4nO3cMW5UVxSA4fPGZgoCVChRJFI6LIFVsAhWRpUNwC7YAXFKSyGCCoMlHMxLMUJKGUWjf/Dwfc2bpyddndv8OtUs67qub65n/riaubyZ+bwOwF6cLjP3T2bO7s78tJ1Z3nxa11fvDz0WcOyePJg5Pb/avfy8nXn8w65GAPtweTPz+uPMn9czv1/NbN5/3n0QG2Df7p/s2jIz8+FmZnPzrw8A+/a1LX+vM5vDjgJ8TwQHyAgOkBEcICM4QEZwgIzgABn...
0
science
grade-4
identify-living-and-nonliving-things
true
false
Select the living thing.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAABvc0lEQVR4nO39WawtXXbXif7GnBGx1m5O87WZX3a20006zYUiE7CNKJt7Eb6SrVugEmUsSAwSMkJISDwg+YEnhHngBT8goRJKqYxAYCH5xebBqFwCrEsZZ6VtfO102QYnTmf/ded855zdrBUx5xj3YcwZEWvttfbep/sa+4yjfWKtiFgRMyJGjDnGf3Ty2XtmHzuCG5Fn9IzelfQgw2+fwtd6eK6B//G2rw/PGPcZvdvpRoSPHfnnkzytD88Y9xm9F6jy6WDTumb...
2
science
grade-4
identify-magnets-that-attract-or-repel
false
true
Two magnets are placed as shown. Will these magnets attract or repel each other?
"iVBORw0KGgoAAAANSUhEUgAAAgYAAADoCAYAAACU7ix7AAAqo0lEQVR4nO3dd3gc1bk/8O/MFu2uVpIl2ZZs2ZJ7kbsxhGKDIbaBEFNzCTEtQCAQCPwCN3BzCbmEhAAJ5WII7RJKaKaGZnCnmGLAttxkuUpWs9UsaYt2V9vm94cQsYXarmb3zMx+P8+TBxKs3RdHPvrue855R1IURQEREVE36nzlqPdXocFfibZQK4KRANqjfgQjfgQjATR7bfhgxe9gsfggm/yQ5QAkkx9pVgUTsyfDZpXgsEqwWSTYrUCWQ0ZhroyiwSYUDpZF/+t...
[ "attract", "repel" ]
null
0
science
grade-2
classify-rocks-and-minerals-by-color-and-shape
true
false
Select the gray mineral.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAADlw0lEQVR4nOz9aXOk2ZXnif3u+izuDiAQmZGZrCySpZqa6VLLTKY3I1Prw0smk8zUMs2oa+muYnHJPXYsvj3LXfXiPO5AJJNJsrNYNSTjmiERgXDAke733HuW/6JqrZX3649ynd648uhr+p2/PSz1G75++in10SN/n6Wwv9fj/9jWn/b/3Z/4UsjG1t/62ncvjYTStz/LT1Hf8Z0VUGgqZfn857feB8gf+VK/tmv1dz1seTBQ9bc+A6p85/cp5HFKPfr8Z7bU+xT...
1
math
pre-k
ordinal-numbers-up-to-tenth
false
true
The first picture is a sun. Which picture is seventh? first
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAqYklEQVR4nO3deXxTVdoH8N9JuqRNaaFgoa2yF8QBWxQYUcoiqDAzFVQE1FFARnBEioq+CowUBEQRVBbZZBNnxgVFsQ4IgrSADk6LLYuytEUWaRGltDRtkibpef+4WW6a7WZrszzfz2fGktzl9PQ5uefmnvMcxjnnIIQQQgghhPiErLkLQAghhBBCSCihDjYhhBBCCCE+5LcOdpWOo9Oua+j9TQ2qdDQKhRBCCCGEhAePOtifV+gw76TGacc573c9ztY1oLjagImH6zw...
[ "sun", "barn", "tractor" ]
null
2