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
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4
choices_pic
listlengths
2
4
answer_idx
int64
0
3
math
grade-4
elapsed-time
true
true
Look at this clock:What time will it be in 5 hours and 15 minutes?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADICAYAAADSmpa3AABF10lEQVR4nO3de3hU9bn//fdaaw5JJgdAmAQ1oCTYKhho8bAbPGEVUKA/BFu2/VWt+7dr8fQ8e6vYPj1ste3ez1bR3eeqB6y7VcFdiy1iFRXwgCewFa0EQaskKKAlCQokMxMyh7XW88fAQMg5zCEJn9d15WKyjnfG5XXd8537e38N13Vd+sgObyLRvAF733acaD1OdCdO9O99vZzIkbEKsPwjMf1lmP6RWAUVeIaciekrzXVkIiIichQxeptgx3Y9R+yLNSSaN4DTkqG...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA7gAAADgCAYAAAApDMpcAABW/UlEQVR4nO3deXxU9aH//9c5syWZbCBMghJQEmwVDLS43AY3WlkU6BdxofYWbe/31uLS3/feurS/Lre12++q2Hu/j7rg9d6rAq3FVrFKFXDBDaxSK0HQKgkK6CUJCllmQmY75/fHkIGQPZk97+fj4SMz55w555NhPvH9OfNZDMBGREREREQSwrZtGkJQ1w5tUYgobYskjdOAIgdMLoAyNxiogSsiIiIikjANQZs3WtNdCpGR55xicKa7ECIiIiIiuWRXe+znODd...
1
science
grade-5
identify-magnets-that-attract-or-repel
false
true
Two magnets are placed as shown. Will these magnets attract or repel each other?
"iVBORw0KGgoAAAANSUhEUgAAAcIAAAC7CAYAAAD2Qp74AAAHmklEQVR4nO3cS4ydZR3H8d+cW2u5tEMpiBRjbUusKQoY5R6NUQwmaFxhjEriJUYTNSZdsGgDSEk1LjR2ZwSjiQkLEjCuUCSKNWHREkwQpLViY7200oIV2s7MubiYVmBBmZmenvHw/3yWM+dNnuR5z/me932e90x0Hjo2CBSweW0rW9a2FnsYY+Guvd1s3dtd7GHASDQWewAAsJiEEIDShBCA0oQQgNKEEIDShBCA0oQQgNKEEIDShBCA0oQQgNKEEIDShBCA0oQQgNK...
[ "attract", "repel" ]
null
1
math
grade-1
open-and-closed-shapes
false
true
Is this shape open or closed?
"iVBORw0KGgoAAAANSUhEUgAAAQkAAABkCAYAAACVdcVUAAAI9UlEQVR4nO3de0yV9x3H8XdBNJieBKvVVdPqJCzVrXV/qMnSTrupw7FUhYKCKF4B43EgQq1SF/EyLxNFqlgHVaf1gpd6aRM3Y12qcZeI22rNtInR2S7aamWSsGjheGB/HGDQzYPgeZ7fc875vP7T6vN8/6gfv8/t4xONjY2NiIg8RITpAUTE2RQSIuKXQkJE/FJIiIhfCgkR8UshISJ+KSRExC+FhIj4pZAQEb8UEiLil0JCRPxSSIiIXwoJEfFLISEifikkRMQvhYS...
[ "open", "closed" ]
null
0
math
calculus
determine-continuity-on-an-interval-using-graphs
false
true
Is the function f(x) continuous on the open interval (3,8)?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAACAt0lEQVR4nO3deXxU5b0/8M+ZM0v2TEhCEgIJOxpMkCgqCIrFqlfUCkpRr1attbXXpe29bW9/3W4XL7Xb7a1V29pal65XWpcqBkRFoUFZAgQSEJAlC5Blss569t8fISlhTch5ODPJ5/16+WozmfOZL+fMnPnOk2eeI1mWZYGIiIiIiGzhcroAIiIiIqLhhA02EREREZGN2GATEREREdmIDTYR9fPOO+9g/PjxWLhwIQDgxhtvxMsvv3zS+2qahssuuwwffPDBuSyRiIg...
[ "yes", "no" ]
null
0
math
kindergarten
count-sides-and-corners
true
false
Which shape has 4 corners?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAD9ElEQVR4nO3bS24TQRCH8b+dxyIksAOxYgUcIUfiRtwkl4jgAAH2hB3kYSkh1rAYAnk4ie3pqa6u+r6VRyPLtfhp7JluT7qu644vpW8z6XQuXXUiGtzmRNrbkN7uSK+2pcnxRdcdntQeiyK3/1za/DrrD15vS++f9QqJhnY6l47Ope+X0peZND256k+AjEq2t9GbkqSzuTSd3zhBVLJrU787aVp3FMoS0MgkoJFJQCOTgEYmAY1MAhqZBDQyCWhk0trQPv08KDk...
1
math
pre-k
select-solid-shapes
true
false
Which shape is a cube?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAARl0lEQVR4nO2da3AU15XH/z2SRqPRG70tCQmCHolhJUwsDAGDDWsHO8QmtY6pfLGp3VrXPhzbW1tbG3sf2a0K3toqZ21vvmQr5cifErzlBKIgxw4QYR7yijiSS3JACIMkJDSgGSTNSKN5aKb3w2i6e4YZIYnb3be7z+8LrZ6ee88MZ26f1z0tiKIoukLAFT/giwALIgiCOzIFID8DaHACFXZAcAVFscert1gEsXy2FgCZQ/7YH1V2oCk3ptUEwRu+CDA4B0yEgMt...
0
math
grade-2
how-much-more-to-make-a-dollar
true
true
You have these coins:Which coins do you need to make a dollar?
"iVBORw0KGgoAAAANSUhEUgAAAUEAAABNCAYAAAA4u9b+AABYd0lEQVR4nO29d3gc53Xv/9nZ2V6BBRa9EyAB9k6REiWKlKxG9e4iuSRx7DhxEsfOzb1pTpw4cRLHzv3FTlxvrq3YFkVRElVIiZTYO0gCRO8di+29zs7vj1msSDWTFCVS1/g+jx8KXmB35p2z533POd/zPSpZlmXmMIc5zOE3FMLVvoA5zGEOc7iamHOCc5jDHH6jMecE5zCHOfxGY84JzmEOc/iNhni1L2AOc/h1SCQSZDJpotEo8XgMtVpNPB5HVItotFqkTBqjyYz...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA5kAAABxCAYAAABfqWdUAAC2I0lEQVR4nOy9d3hc13Wv/Z4yZ3pD7x1g70UsohrVLVm925ZckrjHqb6xcxPbualObp4k90vsuDu2LNuyLFmVkiiJEsVeAYIgQRCNqANM7zOnfH/MYCiqmZRoS5bO+zx6IHBmzuy1Z8/BXnut9VsCYGBiYmLyPsUwDKZyMJCCuAaqeUc0MTExMTExMTknZAHcEnQ6oFoBAdPJNDExeR8zlTXYE3unR2FiYmJiYmJi8t7gAg/I7/QgTExMTN5JTqQKP2sVmOcsnMK...
2
math
kindergarten
one-less-with-pictures-up-to-10
true
true
Count the pretzels in this group. Which group has one less than the group you counted?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABmCAYAAADxjOYpAABl1UlEQVR4nO3dd5hdR334//c5t9fdu71XbdEW7UqrLtuybMsNgwstgIFQE74JBEwSAqQRQskvoRkTEkogVBswlo17kSXZKquyu5K299733t3b65nfH1daaS3bWMIrx2Zez8Mjc++cM3Nm9o/PmfuZGUUIIZAkSZIkSZIk6VWhvtYNkCRJkiRJkqQ3EhlgS5IkSZIkSdKrSAbYkiRJkiRJkvQqkgG2JEmSJEmSJL2KZIAtSZIkSZIkSa8iGWBLkiRJkiRJ0qtIBtiSJEm...
null
[ "iVBORw0KGgoAAAANSUhEUgAABCEAAAB+CAYAAAAa5QvPAADNI0lEQVR4nOy9d3gdx3Ww/87eXoGL3gECRCEBsFdREtW7ZUmusew4thM7jktix04+O07yi+P6xbG/uMSJe9xiualYXRRFSmLvJHoHiN4ucHvd+f2xIECIkkzQBkUn8z4PHwD3zs7MzuxZnjlz5hwBSBQKhUKhUCgUCsXvBSklownoikAwDSmlbSsUiv+lmAV4TFDthHyr8ZlAGSEUCoVCoVAoFIrfG6NxyeHAa90LhUKhuLLY6oU8K5hf644oFAqFQqFQKBT/k+i...
1
math
grade-3
fractions-of-a-group-unit-fractions
false
true
What fraction of the shapes are squares?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABKCAYAAACB4iNkAAAKIklEQVR4nO3d3VIb5x3H8Z9lSSBZLAKc5TWDncRx0jFjTE7IQS06eTtIZ0KuwPgGMr6DkjtwcgMhV1By0JN6OhE+qWfa2mRgmjikMW4AiW0QQhKS9cLSAxB5MQQJVrsgvp9TZtnfo6PfPPPf5zm3vb29LQAAAACO8HkdAAAAAGgmFGwAAADAQRRsAAAAwEF+rwNUzVgJSVK6VJIkRYNBSVLM7PUsEwAAAFAv1wv27Pqavlh+qvhqQo/W17RRLtX0XHsgqBsdXRrr7tU...
[ "1/3", "1/4", "1/2", "1/6" ]
null
2
science
grade-7
use-scientific-names-to-classify-organisms
true
true
This organism is a black-headed gull. Its scientific name is Chroicocephalus ridibundus. Select the organism in the same species as the black-headed gull.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOy9eZhdRbX3/1lVtfc53RkhYZ4CIQSZBwWBG4SLKJMogiKIojggg6KogKgoci8qIIK8iCACKiiKgohefyCDA4MGCGRiEhIIgcxzuvucvavW+v2xu89NCEPUIK+8+/M8/STn9D61aw9n96qq7/ouMTOLMaKq1NTU1NTU1NTU1NT8e+KcI4SAlGVpdXBfU1NTU1NTU1NT8++Pcw5XB/c1NTU1NTU1NTU1rw9UFfdad6KmpqampqampqamZs1RB/g1NTU1NTU...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA6IAAADMCAYAAABp7h4wAAEAAElEQVR4nOy9ebwtVXXt/51zraq9z720ghJQkYCCDQpqjF0g+tDEBrvIi0GNJtgTE5skYmKeiZqP+sRg94jP2Cdq8EPUKGl+tomxR4Hw7DsUkL6/3dm7aq05f3/MdQ49XBQ1mhqfz/1wz7777F27qnZRY40xxxB391IKZsaECRMmTJgwYcKECRN+NqGq5JwRkZ/2pkyYcKPQiYROmDBhwoQJEyZMmPCzDzOjlPLT3owJE7YLeSKhEyZMmDBhwoQJEyb8fMDM+OI...
1
math
grade-4
classify-triangles
false
true
Is this triangle equilateral?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACFCAYAAABhXI8FAAAe0klEQVR4nO3deVjVZf7/8SfLQWQRXGJfJdJE1LTUMlvU3HNjUatp+jXllNMyrWLOzDVLwlFwQU2zXHOs7GuWNTVTWs7kTKNlmYooiRsaiwucAyKYcM7vD/UUF9QIHDgceD2ui6uZz3XD/f7UP6/rvt6f9+1itVqtiIiIiIiIXbg6ugARERERkdZEAVvkZ5hMJv785z/TpUsXbr75ZkeXIyIiIk7A3dEFiLREBQUFZGRk8Morr3Du3DkAKisrHVyViIiIOAMFbJEfyc3...
[ "yes", "no" ]
null
1
math
grade-3
compare-area-and-perimeter-of-two-figures
true
false
Which figure has a greater perimeter?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAHwAAACaCAYAAABrAywhAAAHKElEQVR4nO3dUUhTCxzH8d+ZNbDb9SLIFWu5hK6XCkYUYghRmk/K1YKMsqCIsIZQbfUovthDi7ghPewlwcCHSTBIixQEg17cOtJTou6aud20oUTrlNbcdu7D2CibKd5zds7O//+BqHV28M++nTML2l+QZVl+FwX+WQSkOBCTwQxkkwD8mgf8sQUoNgPCu6+y7P+o9VgsGyoLgE2BxeSDEjPw5y/JPw3MOKQ4MPEZmIsCk4uA6WMseYBjG9Ovecm2APApDpji3xx...
0
engineer
grade-8
identify-control-and-experimental-groups
false
true
In this experiment, which were part of a control group? The passage below describes an experiment. After a severe winter storm, Will's driveway was covered with ice. He read that salt makes ice melt at a lower temperature. Before covering his entire driveway with salt, he wanted to know if adding salt could actually he...
"iVBORw0KGgoAAAANSUhEUgAAAUwAAAELCAYAAACyM7+LAAEAAElEQVR4nOz9WZBl2XWeCX5nvvN8fZ495oicgMxkZoIkQEhoUCCtjGYlscxaJlbprUzo4bHf6rllVSY9yqytqrut21TdEotqkiI4CSCQxEAg58iMyIzR59n9zuOZ+2Gfvf1GIJFJMglEUoqd5uaRPly/99x91l7rX///L+2b3/xmzNP1dD1dT9ffo/Wv/tW/eiJ/1wSYzdXZ29vDNE2y2SyXr17hzp07nJ6cceHCBUaux927d/F9nwsXLpDJFTg6OqLX65HJZMg4GSq...
[ "the unsalted ice cubes", "the salted ice cubes" ]
null
0
math
grade-4
identify-rhombuses
false
true
Is this quadrilateral a rhombus?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEPCAYAAAB4ALMPAAAjxUlEQVR4nO3de5wU9Znv8W9XVzXDfQYUQUFEncAMVwFFVxHvl8REs8bsiQYlarJJTOKGGNdz1nNOcoyevHL05Ghi3OMF8EJ23ci6JCZBMaKOAaJyEUdBRFQQIVwcGAYcui69fzRUz9DNTM9MdVd19+f9l0/ZXfVg/nn6mx9PxVKpVEoAAAAAAmGE3QAAAABQThiwAQAAgAAxYAMAAAABYsAGAAAAAsSADQAAAASIARsAAAAIEAM2AAAAECAG7JAkV10oZ923wm4DAAA...
[ "no", "yes" ]
null
1
math
grade-1
ordinal-numbers
false
true
The first picture is a moon. Which picture is third? first
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAjEElEQVR4nO3deXyTVb4/8E/SJG3ThrR0g7aUFikFWoZFhkUQKygVvSBy2S7o4IIjjvc1w/abmXtnXiyO8xudQfD+rqM4gopevGyiUlyKCigo4IAUKEtZpLSllNbSpCFtmrbJ74+HhC5ps/RJniyf9+s1L6F9lsN3vjnn5DznOUdmtVqtICIiIiIiUcilLgARERERUTBhB5uIiIiISERe62DrmqzIKKjD8L0G6Jo4C4WIiIiIQoNHHeyPrjVh9TlTlx3n/T81o6TegkJ...
[ "rocket", "star", "moon" ]
null
2
math
kindergarten
cones
true
false
Which shape is a cone?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAUq0lEQVR4nO2dWXBUV36Hf73c3tWrNoSEhHbQCtjg3YztTKom5XEe4jxkMqmal0lVUp48pFJ5SKpSrnLlIZsn8cw4XmbsMTaGoQJGbAZhQKxCtjAIxCKB9hbdUre6W61W7+o83L5NNxKgpW+fe2+f74k+ffueP+LH0e17z/mOLJFIJBwR4O484I8DsQQoFMGhlAEFCqBOB5SoAJkjnEj0zJIui0JZPjuMgHJwnn2xTgU06NlUUyhCwx8H7gSA+xFgYB6Qz8bYN2h...
0
math
kindergarten
select-two-dimensional-shapes
true
false
Which shape is a hexagon?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGT0lEQVR4nO2dS08bZxSGX3NbpEm760VZ97Lpmj/T39cEBSkbuonUDbsYkBIRlKZUiEUCVIIFOEYO2EwWn2go2Nhjz3e+c3kfyRL2zMQj9OB4zrznO62qqqqjC+Cfc6AzAPoVCJmZhRbwaB748QHw3RLQOvpUVe2z0qdFPLP8NbCwe56e/LAE/PxVspCQWekMgHdd4PAC+PscmDvrpw2UjDTJo/nkFAB8HABzgxsbCGmSa6cuK2Cu7KmQKFA0IgJFIyJQNCICRSM...
2
math
algebra-1
surface-area-and-volume-changes-in-scale
false
true
Look at this cylinder: If the radius is tripled, then which of the following statements about its volume will be true?
"iVBORw0KGgoAAAANSUhEUgAAAMgAAACqCAYAAADoZADPAAATiUlEQVR4nO3dfXAT953H8bckQpwYW0pLeDJYIuHBBozk5jCEGCRjmIY4F5tpaRvaAdP0cm2aBDedOeJ2psNkpjjthGAoIdNeDgwzuO3cpNhpSdM7SGRwUzBOItuAwQlBGAwOJVQy5IoJ2r0/ZC1+3PhBDzb6vmbEele70hdpP/r9VrvaNaiqqiKE6JUx1gUIMZxJQIa5hIQE9u/fH+sy4pYEJMq2b99OZmYmiYmJTJkyhV/84he681+/fp2lS5dGqTrRnQQkyt5//31...
[ "The ratio of the new volume to the old volume will be 1:4.", "The ratio of the new volume to the old volume will be 27:1.", "The ratio of the new volume to the old volume will be 9:1.", "The ratio of the new volume to the old volume will be 3:1." ]
null
2
math
kindergarten
triangles
true
false
Which shape is a triangle?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACJCAYAAADUvSEiAAACV0lEQVR4nO3UvW5UVxSA0X1nbBf8JF0iGrqQR+CFqPMuSc0T8QaEVDQ4rQ2WcDy6Ka6Q0nv0DZqsVZ2jI23t4tNZ1nVdr+9n/rqbuT3MPKwDj3axzDzfz/zyZObnq5nl+uu6vrs59Vqcs9c/zFx8uNsuL65mfn26VQiPdXuYef9l5tP9zJ93M7ubh+1BZBzT8/3W1MzM58PM7vCfBzimb039s87sTrsK/xdCIyE0EkIjITQSQiMhNBJCIyE0EkIjITQSQiMhNBJ...
1
math
grade-1
match-digital-clocks-and-times
true
false
What time does the clock show?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAN8AAAA2CAYAAABHskxmAAAIe0lEQVR4nO3ce0iTbR8H8O+9zfMyZ3NuaZmGCh3ooPXUH0FgkmmvpmW1qAgxSuhABEURUVH5bycIkiCk+iMpqreiAxRIYD6WpBm1Ugs6aBmGMw+p2/f9w2d7H5nTtOwm9/uAyK7ruu/f755+3bw2ppBkYxdQ2w60OoAeQggxAnQKMEYLxAcDkf6A0vid/NuudltC+Ja/QgHd6/beGxZ/IDGkN5lCiF+v1QHY2oCGLuBVO6Cx9/ROSPCEGFljtL05A4BvDkDj+Ne...
0
math
grade-2
fractions-of-a-group
false
true
What fraction of the shapes are rectangles?
"iVBORw0KGgoAAAANSUhEUgAAAXIAAABKCAYAAACmet99AAAEEklEQVR4nO3bP29TVxzG8cdxEmKTEgVo+KOGjXRylKoLGLGwdO5bYOclwCvo1BfB1ompCxOKMrZi8xiGCqmJcxtjmxj7drASRSKEg33vPed3zvczerj66ZHy6OqxU8vzPBcAwKwF3wcAAOZDkQOAcRQ5ABhHkQOAcYtFPuzXP59p7/3fRT5yLu1bO/rjl999n/EZcnJDToCbQt/IQ/qjk6Td93/5PuFC5OSGnAA3hb6Rn3qy9aCMx36T15093yd8FTm5ISfgcmzkAGA...
[ "3/7", "2/7", "3/5", "2/8" ]
null
2
math
precalculus
determine-continuity-using-graphs
false
true
Is f(x) continuous at x=7?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAACIlElEQVR4nO39eXxU15kn/n9ubdr3HYEkxCIQIHZsNoMbx3bHjjuQpO3kl/WVTncySSfd3+meyWR6Mt09Hnd6SWeSjt2ZzGRiZybT6TDxEhvLBAcMWJhNgEBiEwK0UpJKKkm13/X3R6kEMsKopHtU2+f9j02p7qOje+ue+9xTzz1HMgzDABERERERmcIS6wYQERERESUTJthERERERCZigk1EREREZCIm2EQ0ycGDB1FTU4MnnngCAPCRj3wEr7zyypTvVRQFDz74II4...
[ "yes", "no" ]
null
0
math
grade-1
comparing-review
true
false
Which group has more?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAagAAABeCAYAAAB2DoBwAAAGJklEQVR4nO3dsW8TZxzG8ediyJlgcFBRqy5RloQMIBgSJTtDKxAK6tQ/s4CoypDdgAckFhN3oCylAok4cRIfxboOV6uxuXN89nt3P1+/nyVA0Hv3tYdHBoO9MAzD95+l30+ko770JRQAALm74ElXKtLakvTdouS9D8LwxWHRtwUAwH+2r0oX2ifRT75flG5cjtYLAIC8HfWlN8fSn5+l/RNp4fBL9A3GCQBQpCuVaIskqduXFvpnvgEAQJEGW/R3KC0UeysAAMR...
0
math
grade-1
compare-objects-length-and-height
true
false
Which tower is the shortest?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAHAAAADrCAYAAACxQRLLAAAUs0lEQVR4nO2dWZBc1XmAv7v1Nj2rNFpmECBAmBjv2HFsVzZb4SExtlNe4jy4Ko5xpUJRScpOUYlNMDgQG9siMTZ2ZCJip7yo7HIAgXFAECGzCwuEzcgRWmE0o2U0ml5v993OyUP3tEZiRjPT09Nzjzjfi+De2/ec7q/PPf9/lh5DSimP+rDPhWIEoUQTY2wDOi1Yl4GVCTCOelLuKCx1tTTN8M4usPe6tf9ZnYDXddTsauJLMYI9ZTjiw0sumIWwdkLLU4NOq+Y...
2
math
grade-3
select-figures-with-a-given-area
true
false
Which shape has an area of 8 square units? The shapes are made of unit squares.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAGgAAADgCAYAAADv/yMUAAADi0lEQVR4nO3csU4UURxG8W92gQJBO9FWgyTYwyNIb+XD2MiT2Mgr+ArSa4IYW5eWhU1ANtdi3GAiERL37hwm59dNNrl3kpObae5/m1JKGV0m3ybJeJpclahDS02yPkw2V5ONlaQZXZRyeNr1a+kmuw+TpeNJ+/B0Jdl60NZTd8bT5Og8+XGZfJ0kg9Or9gfjMKwP2xZJcjZNBtM/fhDDrMXPkgy6fRXdxkBwBoIzEJyB4AwEZyA4A8EZCM5AcAaCMxCcgeAMBGc...
1
math
kindergarten
count-to-100
false
true
How many diamonds are there?
"iVBORw0KGgoAAAANSUhEUgAAATQAAAAsCAYAAADrc0TdAAASr0lEQVR4nO2de3BU5dnAfzm7m71lk02IyZI7t0AQRKiATEuRwidanU4rHew4OoK1tlNawar9w16k+rVOR62o1RmrFhz9OoOfZZxWS5lKi1oVxAIqEAgBcr8sIdnNZu+7J98fJ8kky252992zu1m//P7cPe97njzZ8+45z/M7e/KGh4eHmWaaaab5AiBlO4BppplmGrWYXtCmmWaaLwyqL2g+zzB/fPQif3z0Ij7P1L+aDXnCHH3oBEcfOkHIE852OHFxB538dP+N/HT...
[ "4", "7", "6" ]
null
1
math
grade-3
fractions-of-a-group-denominators-2-3-4-6-8
false
true
What fraction of the shapes are rectangles?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACUCAYAAACp1l47AAANWElEQVR4nO3dz2qc5xXA4ROPpDoSUqxIskd/oxBDITfQTQml9B56E6Wr3EB9A3I32UWxt554VxnslVwKMgrEG0lg0WIVSQTGG8thtBmCurClurQa3tjfzPt+0+e5gJnDb3X4hvnOB2dnZ2cBAABU4kruAQAAYJhYsAEAoEIWbAAAqNDQLtjbxw9j+/hh7jGKp1ManQCAVB8M458c253D+MNffh0REfd+/8/M05RLpzSldzr98+/ip3/8LfcYFxo3v4jxPz7KPQYAZDO...
[ "7/8", "1/8", "2/3", "2/8" ]
null
3
math
kindergarten
identify-pictures-with-symmetry
true
false
Which picture has symmetry?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAY4ElEQVR4nO3deZgcdZ3H8fevqvqcOzPJTCYnQkACJBDisYqCCxhdRPHER13wXmHd9dnVXXnW53GfPXz0cXH38cJjWbkWXFFRRBY1rBwCSiRBIIgkQJKJSSbMkTl7uqur6rd/1PQxMz2TmcnM/Kpnvq/nyZM5qqs/M9Of/lVXV/1Kaa11pwvPZWDQB08jhJgnjoI6GzakoTUOqjOn9Y4B07GEWHpeUQ/O3kz4yco4nFYTtlMIMT8GfXh2GI64sCcD1oAXfkPKJ8T...
0
math
grade-5
points-lines-line-segments-rays-and-angles
false
true
What is this?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABhCAYAAADsidaRAAAH1UlEQVR4nO3dv2/UhR/H8Xd7n0II9jQoBr5cQiSEYIE29EzLQuLSDpp8pw6S7wS7YWFxkKGOOjCjgdGGtJs6lH+gDK00JiUYgjGp3ziRcEg00va+w+X6LXJXeu3nfnzuHo/x7qN9DwzPvHK99pXL5XIAAACp6G/3AQAA0E0ENgAApEhgAwBAigQ2AACkaEeBXSqVYnh4OKanp2u+d/Hixbh27VrqxwEAQNb07fRbRK5duxZ3796N5eXll17/6KOPIiLihx9+SP86AAD...
[ "a ray", "a line segment", "a point", "a line" ]
null
1
science
grade-5
compare-properties-of-objects
false
true
Which property do these four objects have in common? Select the best answer.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADQCAYAAAByQhWRAAEAAElEQVR4nOydd5wkV3mun3NOpQ7TkzZHaZUFyiAkQAhMMAYDl2SujU0wxiaZYBwA2xiuuRhsjDHYcMkYmySCSSaJJIFAIkggIa200kravLM7uVOlc87941TP9MzOrnalXa2Q6vn9eqZDdXV1d1X1e77zft8nrLUWII5j9uzZw+zsLHmeU1JyvPE8j0ajwerVq4mi6Ji+Vrn/l9zXKPf/kgcy5f5f8kDmaOz/wlpru90uW7duZePGjURRhO/7R3lTS0qOnCzLiOOYO++...
[ "soft", "salty", "transparent" ]
null
0
math
kindergarten
count-scattered-shapes-up-to-10
false
true
How many shapes are there?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAGeCAYAAADhZ3U5AAAYZElEQVR4nO3dwW0bWRaG0dsGAUXghfZeKYuG4SwmhQYacBwGDMxuUjGMyUKr3nvRERgQrFmwayhbolgkq+q9d+85EZRdvx4/UEXxt8fHx8cAAABSeNP6AgAAgOUIfAAASETgAwBAIgIfAAASEfgAAJCIwAcAgEQEPgAAJCLwAQAgEYEPAACJCHwAAEhE4AMAQCK71hcAUNrff0V8+RTx8L31lbxudxPx4WPE23etr4RL2BmU4h18gFZGia6I/TV++bS/ZsZiZ1COwAd...
[ "6", "7", "10", "3" ]
null
2
math
grade-5
types-of-angles
false
true
Look at the angle marked on this shape: Is this angle greater than, equal to, or less than a right angle?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACgCAYAAAA2PRuAAAASbUlEQVR4nO3dTXBU9Z7G8ed0JzSd7iQNISSEhHRDoiRRiFhCgaWFcHkrqywUwcXMYnBkMbObqZrV3MW9CxezuTPlYjZzq+5dzNS9Ncxq7p1rAl5etAQRkRflLZBclJj3hLygaUh3n1kktAkgJOlz+n+68/1UWfVvPJ7+qSwej788x7Jt2xYAAAAAR/hMDwAAAADkEwI2AAAA4CACNgAAAOAgAjYAAADgIAI2AAAA4CACNgAAAOAgAnYG4vG47t27Z3oMAAAAeEiB6QF...
[ "equal to a right angle", "greater than a right angle", "less than a right angle" ]
null
1
math
grade-1
compare-money-amounts
true
false
Which is more?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAj8AAACYCAYAAAALKohIAACpmUlEQVR4nOy9d5gcZ5W3fVd1jtM9uSdnzYxG0ihnWZItGRvkhAPYGANrcljSsizwssAuLPvCAi/sByyYJRljGxvjbEmWbcmyctbMaHKOPdMznXN3fX9Ud1lyAMlYjnVfly9Z0mim66mqc85znnN+R5AkSZqMQ28YAilISqioqKioqKiovGXQCmDTQL0ZivQgTMYk6ZD/9f5YKioqKioqKioXn5V20PaE5d+49DDPIkdGKioqKioqKipvFQIp6ArBRBy6wyD6k/J...
1
math
grade-5
fractions-of-a-whole-word-problems
true
false
Mateo has ordered an extra-large pizza from Pizza Palace. He asks for his pizza to be cut into 8 equal pieces. Mateo sprinkles grated cheese on 1 piece and red pepper flakes on 6 other pieces. Which model represents the fraction of the pizza that Mateo sprinkles with grated cheese?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJ8AAACfCAYAAADnGwvgAAAei0lEQVR4nO2dd1yV9R7H3yDI3kOWgEwHw62BIK4cmTM1Z5ZpadmwLC1vN6vbbVzThitt3FI0FzjK1BRRRJyAqEwZIiCyD/Owzv2D9LpZ53meg57368WLF+c8z/f7Oef14fd7fltDoVAorldDSgWU1kGtAjVqBEFLA4zagbs+dGgPGtflCsVpmdSy1Dxu9DMGreSKhj9s24OnQYMz1agRgtI6SCyHnGpIqgBNWW3DG2rjqREao3YNPgMoqwPNutveUKNGaG76rEY...
3
math
grade-5
types-of-angles
false
true
Is this angle greater than, equal to, or less than a right angle?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABwCAYAAAAkAwevAAAKAklEQVR4nO3dTYzU93kH8O+wOwveZWEhvDu71NAXXMCOZVOZt9iuSy3FNKpcpLRGOfhQNy+XVIqqJq2aHlo5aXtpLVkcemiqxE3jgzlAU1k2qTHYRjgvGAokNU0XbPCK0GVZ3ry7MD0skG6AmVk8uzMTPp/b/md2fs/xq0fP//kVSqVSKQAAQE1MqXcBAADwi0TABgCAGhKwAQCghpo+YB/5Zm/2PXOo3mUAAECSpLXeBdyq4y+9n51/uDfDA8N5+BsP1rscAABI0oQ...
[ "less than a right angle", "greater than a right angle", "equal to a right angle" ]
null
1
science
grade-6
identify-elementary-substances-and-compounds-using-models
true
true
Look at the models of molecules below. Select the elementary substance.
"iVBORw0KGgoAAAANSUhEUgAAANwAAAAiCAYAAAA0wrfoAAAIlElEQVR4nO2cbUhU2xrH/8ZsncnxZQZu6sHZ4Adr0nEsD0ScvB0t7cVOaBCUgRRkoscSIpPuibIC3y6SRnnO+eB8CIKCvsxQvuAXo3OUIBRx1GsnDJuxmy/UjKMyM261+2Eau+W87De3c7nrB4Ow117/9Qzyn/WstZ69wz59+vQJBAJBEjZtdAAEwv8TxHAEgoQQwxEIEkIMRyBICDEcgSAhxHAEgoTIhHR2uVxgGAZutxsMswgAoKhwREREgKIoyOVyUYKUmv7+fli...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAYsAAADMCAYAAACCyo/rAABGK0lEQVR4nO2deXxU1d3/P3eZPZM9gQCJYFjCLiCU4oYKKlhqrdbH+kBplce61FYqtaLPT7BuYFERFFuXap+61NbX424R+wiitvpSAWWRfUsgezIzmfWuvz8m5+bOZJKZJEOYwe/79bqvmbn3zr3nnkm+n/M933O+hwOggyCIfuFzr45RLsAtnOySEERi2lRgTwColYACETg7P7qfP6mlIohvGSQURKbjFqJ/pwDgVzv2k1gQRD9CQkFkA+zvVDb1O4knpygEQRB...
2
math
grade-7
bases-of-three-dimensional-figures
false
true
Look at this figure: What is the shape of its base?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADLCAYAAABUDuQZAAAfpElEQVR4nO3d70+c573n8c8NA+HHLAbjjCmpMRpQjKcGxol/UG0OsE7t0FA5TkyspjqOUE+8yianlfcPWLXafXKOVGlRUltRcCIWIuxjQ+KtjAuWYhlqbcFZKUO8miYWneN4nAazZ4i9GibEM+69D9whtmMwmHvmnhneLykiYmau6wuPPly+7u/XME3TFAAAAABLZNldAAAAAJBJHHYXkIq++OILffXVV3I6naqsrLS7HAAAAKQRTrDv4ze/+Y1qa2tVXV2tcDhsdzk...
[ "square", "pentagon", "triangle", "hexagon" ]
null
2
math
pre-k
what-comes-next
true
true
What shape comes next?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAD1CAYAAAAlI4EUAAAcA0lEQVR4nO3da5Ad9X3m8ae7z2XO0YyGYEUC4eKyMr5hwLuFoLZAsK7Fdgy8CLbjuIqq4OAqvyC8SWoJpAI2t7ILEpuya33BW5tEKZOLvVRcCcaXEIwNXm8AG7BLWCVDdPFo0MxII4m5nkv3f180oxldRnP6nL7++/upcmGkOd3/efip9Uyf7j6OMcYIAAAAgBXcrBcAAAAAID4UfAAAAMAiFHwAAADAIhR8AAAAwCIUfAAAAMAiFHwAAADAIhR8AAAAwCIUfAAAAMA...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAz4AAAD1CAYAAACRDCAyAAAhTElEQVR4nO3da4wdZ53n8V9VnUv3cbfbhNCdC3LCOiFAxji7solWjsOiNRAgLzaXYUaKtGaDxItM3sxqIYxIIDeBnBkSgTZAGA07HsHsDEx20a4JhPWEgM2ymwRiEzlYJlnbTbvTF7ttp6/nUvXsi0rb3Xa3+1Sfutf3IyERd/dTT//9V7l+56l6yjLGGAEAAADIBcuykp5CKtlJTwAAAAAAokbwAQAAAJB7BB8AAAAAuUfwAQAAAJB7BB8AAAAAuUfwAQAAAJB...
1
math
grade-4
interpret-bar-graphs
true
true
A food industry researcher compiled the revenues of several pizzerias. Which bar graph shows the same data?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAC9CAYAAACJdQrFAABYXklEQVR4nO3dd1hT5xfA8W9I2MMBDtwo7q0F9yiiUgeuulpt3Yqz7tXWanFb6xZ3ax39OerWqq0Dd6tWi3vgxAUuRhghye+PyK0RUNAojvN5Hp42975577nJNTn3vee+UdFwvxEhhBDiHWXcXC2jQxBCCDNWGR2AEEIIIYQQ7xNJsIUQQgghhLAgSbCFEEIIIYSwIEmwhRBCCCGEsCBJsIUQQgghhLAgSbCFEEIIIYSwIEmwhRBCCCGEsCBJsIUQQgghhLAgSbCFEEI...
null
[ "iVBORw0KGgoAAAANSUhEUgAABSsAAAHDCAYAAADMak/ZAAD2RElEQVR4nOzdd3xTZfvH8U+SNm3TAQXKquy9oUihyCjTagUERIqoLH0ExOJERX1QEVyoVEEERZGfwiOVVkCGyl6CgOyNzDJkdo905PdHJRjaQsFCAn7frxcvmnPuc851Tk7T5Mp137cBsCEiIiIiIkXCZrNxygoHUiEpG7L0bltERESkQG4G8DVBDQuUMYMBJStFRERERIrMqQwbvyU6OwoRERGRW09zP3BzdhAiIiIiIreT/am5/5czQy3v3EoBEREREclfUjb...
1
math
kindergarten
are-there-enough
false
true
Are there enough marshmallows for every mug of hot chocolate?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACgCAYAAAA2PRuAAAAm6klEQVR4nO3dWYxk12Gf8e/cpW7tvS+z9iwkZ4YiJS6SRUeSLcOW5diKYgdxnARBnAD2QxAgyXOeA+Q1j7YRIwi8vmRxhAhWbMWOKUq0SEkUJXEfzr70Nr3VfpeTh1tV3T1Ld1dP9UxXzf8HDKjp6a6qr4E6OnXvPecaa61FRERERET6wnncL0BEREREZJhogi0iIiIi0keaYIuIiIiI9JEm2CIiIiIifaQJtoiIiIhIH2mCLSIiIiLSR5pgi4iIiIj0kSbYIiIiIiJ...
[ "yes", "no" ]
null
1
engineer
grade-8
identify-control-and-experimental-groups
false
true
In this experiment, which were part of a control group? The passage below describes an experiment. Roger and his neighbors wanted to attract more woodpeckers to their yards. They read that woodpeckers often eat sunflower seeds. The neighbors wanted to find out if filling their bird feeders with sunflower seeds would in...
"iVBORw0KGgoAAAANSUhEUgAAAUwAAAELCAYAAACyM7+LAAEAAElEQVR4nOz9d5gk13nYC//OqdS5J8/szOYFNgCLXZCIBEgCYBBFMEmkRCrLsk1RkiXZknyvLMu+z733cbhX15ZMW8H8SMuWKYsQSTGCQaAIgAhEWoQFsDnvTo6du/L5/qjunp7enumZnV3sLsV3npqqrnDq1AnvefMr/sk/+SeKH8IP4YfwQ7iO4A//8A+vynt1gG9/5X81TgghluwBpJQrXhcqRNM0AMIwJKihYIUgDEO8UJFIJDDMBBs2bODQkeP81m/9Fls27+D...
[ "the yards with feeders filled with sunflower seeds", "the yards with empty feeders" ]
null
1
math
calculus
describe-linear-and-exponential-growth-and-decay
false
true
How does f(t) change over the interval from t=1 to t=3?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABwEklEQVR4nO3de3RT95kv/K8syXcbG9vYxmADIZjY2BBuKQRjE0ggIaGFtEPa02YyKzMNBJKernOmq2em03fak5WTOTNtV9NALp1Omsw75+00pyQNF0O4GNsxCRcHjG1uxoAvgC+yZVn3LWnv9w8hX7hZgv3zluzvZy2WtmXtxw97S7/96NFPe+sURVFARERERESqiNI6ASIiIiKisYQFNhERERGRilhgExERERGpiAU2EQ1z6NAhTJs2DWvXrgUAPPPMM/j4448BANe...
[ "f(t) increases by 400%", "f(t) increases by 2", "f(t) decreases by 4", "f(t) increases by 4" ]
null
3
math
grade-1
more-less-and-equally-likely
false
true
If you select a marble without looking, which color are you less likely to pick?
"iVBORw0KGgoAAAANSUhEUgAAANkAAACRCAYAAABOtR13AAA0F0lEQVR4nO2de5SdZX3vP8/z7svsuWVmkoFkBjIhBAIhIJAgIJKIysUqCmgRrBSWPUdtj7ZL6Wm1PSxOewB1nVO1rctlV1drxSp4QAPqKWBBEQgCSQpISi4EciOT22QumZk9+/K+z3P+eJ73svfsSWZm7z3X/V2Ed97Lfu/f9/d9fs/lK7TWmhpqqKFqkNN9AjXUMNcRm+4TqMFA9Qzi7elB9w2jeofQvcPo4SyipR7Z2oBoa0QubMQ5ox3RVDfdp1vDBCBqcnGa4Cn...
[ "neither; black and pink are equally likely", "black", "pink" ]
null
1
math
pre-k
fewer-and-more-compare-by-matching
true
false
Which group has fewer?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAHIAAACGCAYAAAAB3t5yAAAdbUlEQVR4nO2dd3gc1aHof2e2q61Wvbmo2Va35SKwwXEBYkMAOybYEJJHgDwghRJeCgmQ7yYkhHtzkxASeAkO98EljVBCTegOIS5YtmxV26pW72VX23fn3D9WkiVLcgFJxvv2933+rN2ZM+fs+c05c9rMCCml7PRAnQNsfvBJQpwHaAVEaiA7DBL1IDrdUn5oPdfJCvFxKIkCba0j8CFZD4vDA5ZDfPKx+eGoHTo8cMwBitUX2BCSeH4RqQk4Axj2g+IftyHE+cW...
0
math
grade-3
match-fractions-to-models-halves-thirds-and-fourths
true
false
Look at the colored part of each shape. Which shape shows one-half?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAQV0lEQVR4nO2deWwc133HPzOzu7xJURKPFcWbS1ISZVuSI0qWGt+1LR91pSh2HBSF7b/7V4G2DtCgCBCgLdD+0wMoEDdFYru2FR+R7dpyDFuhJFOWlYgWKZHLJUUu70M8vCR3uef0j+EOlxYlksvZc+YDENLODN97y+97M+/9vu+9EWRZlsd80OOGuSAEZAzSCJMAeRLYsqHEAsKYV5YvuRJdLIN40JwPJodb+WC1QEOOUhsM0oe5INgXYNQH3W4QXQHlhCF2epI...
1
math
grade-5
classify-triangles
false
true
What kind of triangle is this?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABtCAYAAACbSxbqAAAY8klEQVR4nO3de1zU953v8dcwwKAieEFFxAsoKDGIEgXBSy7eTtQEjVd+P83Z2DYnbbfZbvvoeTSenEe7p03SJI/tNpvdpH1k07SbNNeTBOKVUWki1ahRMTLooIiICgIqqKCAwJw/yE4627NV4DcO6Pv5eOQPvvObmfcv+eed7+M7n5/N4/F4EBERERERSwQFOoCIiIiIyO1EBVtERERExEIq2CIiIiIiFlLBFhERERGxkAq2iIiIiIiFVLBFRERERCykgi0iIiIiYiE...
[ "right", "acute", "obtuse" ]
null
1
math
algebra-2
classify-variation
true
false
Which equation shows direct variation?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAFoAAAA7CAYAAAD7AJ39AAAFxklEQVR4nO2cS2hTWRzGv5ukafrIhNY4Y9QKtk4rdmFwYYmIGx8UdECrRUEFxU2hFKQxGxW68BUhWlHQRQWpi1DciI4IBcHHQm0VjVqtmZaAD5gMrQTtWNPmJt8sMgkTm5q0vTnp6PnBJb3/8/X8//fLyUlyTzgKSQbHgcFRYCQKqIREAwwKYNYDvxYDvxgBJThG9n7Kd1nfN3U/AYaB0fiJzQjUlMSfBcnMGYkC/s/An+PAH6OA7pMab5Ama4tZH/cUAP6OArr...
1
math
grade-2
which-tally-chart-is-correct
true
true
Leah and her troop went camping. They brought some drinks. Which tally chart shows the right number of each drink?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADhCAYAAADyOcJJAAAvmElEQVR4nO3da3Cc2X3n9+95nr7jDgIEiKFGHHLGoLUhpRlr5CijS0ZbUmL5hdZVK7u8SpUqlZWjTFKVV0re5IWj3U1VtNGb3ZQrycqJ44p2q6xIWksajV12ySvJmZE8GlvkzIgghwtyRIAECKDRAPr6XM7Ji8alm8QdDaCB/n2qutD9XA8aQOH3nP4/5xjnnENERERERFrCO+4GiIiIiIicJgrYIiIiIiItpIAtIiIiItJCCtgiIiIiIi2kgC0iIiIi0kIK2CIiIiI...
null
[ "iVBORw0KGgoAAAANSUhEUgAABF4AAADrCAYAAABQDFIqAABr1UlEQVR4nO3deXxU5d3//9eZNZnsISEQQDAswQVQVBR30LbWBVu3VqnW+m0rahe1rVartmrF1qW21lq12mqttrdaNwTv9u5PxKpgxSqishpAQiBkT2afOef8/hgIGbLvk+T9fDzmkcyZc51zzRAmc965rs9lADYiIiIiItInbNtmVxQ2B6HJhLg+bYuIjBguA7KcMNUHRZ7ENgMFLyIiIiIifWZXxOY/jYPdCxERGWxHZ8NoD7gGuyMiIiIiIsPJpmDi61gPlGY...
1
math
algebra-1
write-compound-inequalities-from-graphs
false
true
What compound inequality describes this graph?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAMg0lEQVR4nO3df0yU9QMH8PcBh4TCAYEp41d9XSiKKJ4cqLCsaSxyBQTB1sylZNmv9V2b/dFaP8itVbhZbcQXiFpzDr5Cs4CIkR0M+SlxgoqZhUJ8A5STC5A7ftz3D7rLgzt+njzPQ+/XX95zx/b++Bzcmw+f5/PIjEajEUvI8ePHIZPJkJqaKnSUBeE4xIXjEBeOg4iIxMxJ6AD21tHRIXQEu+A4xIXjEBeOg4iIxGzWBXtkZARnz55FXV0dVq5cyRkXmlZXfi+6/tu...
[ "$-8<x \\leq-6$", "$-8 \\leq x<-6$", "$-8<x<-6$", "$-8 \\leq x \\leq-6$" ]
null
0
math
grade-1
find-the-next-shape-in-a-growing-pattern
true
true
What shape comes next?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADhCAYAAAC9ZMGZAAAaEElEQVR4nO3d628dd53H8c/MudhxHLsxJZemCRTT3U0pDSqJgN4oCLVPwhN4un/ESvsUtGKptFqJthKVILDdsluJUh60m22jlHRRaXpLIS1qesvduThxbCc9Tpwc2+fMbR8YJ87FzpnjMzO/+c37JfGgsWd+v+/vYj4znjN2oiiKBAAAAMAKbtYdAAAAANA5BHwAAADAIgR8AAAAwCIEfAAAAMAiBHwAAADAIgR8AAAAwCIEfAAAAMAiBHwAAADAIgR8AAAAwCIEfAA...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAz4AAADhCAYAAAAJS2C/AAAe90lEQVR4nO3dW2wc153n8V9VX0hRLVJiHJGyTMYZOrtLxwkHiYRJLCdxBgMLA8gvydMCC8zbPC+wrwkWswl2scA4ASZAxpn1JrsBJvE8xKu1BTn2Bo6UWJZj2RnJN8nWXZQoNiU3KYpNsrtu+9ChREkk1Ze6nKr+fgA/iGTVOf9zqsr1q6qutoIgCAQAAAAgEyzLSroLRrKT7gAAAAAARI3gAwAAACDzCD4AAAAAMo/gAwAAACDzCD4AAAAAMo/gAwAAACDzCD4...
0
math
grade-3
reading-schedules
false
true
Look at the following schedule: Which stop does the bus depart from at 11:00 A.M.?
"iVBORw0KGgoAAAANSUhEUgAAARkAAAFJCAYAAACvnlngAACFBElEQVR4nO2deVhN2//H36d5ngeVSqNkCkWmFBEq85AS4lLmuGaua7q45nnmkrnMMkRFyZRSSMmQROZUNE/r90e/s7/tM9RpOIT1ep6ep7P22nuv/emcz1lr7d16cS66biCgUCgUMSEFAN3G9/vBzaBQKL8iYdvPQOJHN4JCofza0CRDoVDECk0yFApFrNAkQ6FQxApNMhQKRazQJEOhUMQKTTLVQLGvORT7muPY9bM12v9yzHVM2/E3lh3ZULcNqya1vQ4u03b8jWk...
[ "the college campus", "the pizza place", "the softball field", "Main Street" ]
null
0
math
grade-6
rotational-symmetry-amount-of-rotation
false
true
This image has rotational symmetry. What is the smallest fraction of a full turn you need to rotate the image for it to look the same?
"iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAAs10lEQVR4nO2de4BbVbX/v2sn0zavDlCLUFBRERAQKBQok3MypA/hgoovKipeUHygqC1cWl4FKW/Ko/DTixdQQR4iFbkg3GqdKSE5J0MrIyJYaHkIXAQKXAqd5CRtk5z1+yOZMp2enZyTnMwkM+fzV5u9z95rZs43+7X2WoCHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4e...
[ "1\n5\n of a full turn", "1\n6\n of a full turn", "1\n4\n of a full turn", "1\n9\n of a full turn" ]
null
1
technology
grade
logo
false
true
This is (part of) a (former) logo of which computer related brand?
"iVBORw0KGgoAAAANSUhEUgAAAV4AAAC1CAYAAAAX35fvAAASNUlEQVR4nO3deWwc130H8O+bndl7lzdFkeIhUpSo07Jl0ZEsyVYSB2nRAKmRtmmBOnVdGwHqBk3TBk6bxkETNwjS1A5Sp2nlpHUDGGiDNgbcAj7qOD4qWZJp2aJMiRJviRRvLvc+5/WPpWzZIsXZJfeRXH4/gAD9MSP88N6b787Mat9PdJzuAhERqaOtdAFEROsNg5eISDF9pQtYb6LRqDwzNoNuvQQhwwMjk0J1KojbXSaaNlSLla6PitfY5KTsCKYxZC9FQnfAl4q...
[ "Corsair", "Micron Technology", "AOC International", "Cisco" ]
null
3
math
kindergarten
fewer-more-and-same
false
true
Are there fewer hummingbirds than daisies?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACgCAYAAAA2PRuAAAAk+klEQVR4nO3dZ3Rc52Hm8f+904EpGMygVxIESAIgKRaJYpFpWcVWcQlj2ZadxGnrZHM28XHKZnM23nU28W6yWe852d1UJyebdTYbF0m2ei8Ui0ixk6BAsIEA0QdlMIOpd+buB1i0HVOyKA7A9vzO4QdMufd97oc5z3n53vcatm3biIiIiIhISZhXewAiIiIiIjcSFWwRERERkRJSwRYRERERKSEVbBERERGRElLBFhEREREpIRVsEREREZESUsEWERERESkhFWwRERE...
[ "yes", "no" ]
null
1
science
grade-8
predict-heat-flow-and-temperature-changes
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
[ "iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAXbklEQVR4nO3daXAc533n8W/PiRmcBAESIAAKJMULPETxEClZkqmVvLZlK3GsVSpO7Hi3apPaqlTyIpW3u+93a2trX+zWVipVXu/6SLxSbEtWIkqWHF0Ub4gESIIgSFzEfRHAYO6j90UTA4IEKIgYdjeA36dKJaIx03gwT88P/fz7eXoM0zTNoRTciEEkCxkTEZGC8BlQ6oXtYdgYAGMoaZpnp51uloisdkfLwNcRs76oDcDOYiuNREQKIZKF9igMpuB6DDzTGes...
1
science
grade-2
read-a-thermometer
false
true
Select the temperature shown by this thermometer.
"iVBORw0KGgoAAAANSUhEUgAAAMIAAAHaCAYAAABSE5ZzAAB3YUlEQVR4nO29eZAcx30m+mV3z0z3zACYg8QxACziIkAAvA+QFClQPCRRpm1ZpP1k0V6utbK48ou1Ze2L1YuVV+/t2rEb3A1Je4Rt2dKuV1rKIWpJWaREUvYjxEukQBI8QBIUSdwEZgCRmIMEZnqO7sr3R3VWZ1ZlZmVmZfX0gPghJgoz9dXXv8zK/L7MrK4qQimlaFHMzMxgdnYWQRA0f+oBKMQUCAgoqHQbAwI0tjWIVH4Z70Lnt4j54AcBCqSAQrGAYrGIYrGIzs5...
[ "35°F", "55°F", "90°F" ]
null
1
science
grade-8
identify-how-particle-motion-affects-temperature-and-pressure
false
true
The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature?
"iVBORw0KGgoAAAANSUhEUgAAAmwAAAGZCAYAAAA0Im0SAAB510lEQVR4nO3de1yUdd4//tfMwAADAwgIguIZxjyikGaaoa5tpVS7rZralt1bup22g9Z2VxZ7213tnbb73Y7q/kqr1Y7bATuZFuqmaaCopQ6ehQZFEWSQw8Dw/v2Bc8lwHGBghmtez0cGXHNd17yvgXnP+7o+h0sjIgIfVlR0FsePn0BVVSU0Go2nwyECAPj7+yM6OgZ9+/b1dCikYsx/5I2Y/5rm5+kAPKm2thYFBQUQqYVer/d0OEROiorOIjY2Fv7+/p4OhVSI+Y+...
[ "sample B", "neither; the samples have the same temperature", "sample A" ]
null
2
science
grade-8
analyze-data-to-compare-properties-of-planets
false
true
Use the data to answer the question below. Is the following statement about our solar system true or false? The four largest planets are made mainly of gas or ice.
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAFACAYAAACGDgu2AACAQUlEQVR4nO3deVxU1fvA8c8Mu4prmltsKqKIAam4EO6Y4S6agJm5Z3zVRBG0ckOUNDVXclcKckVcUDEz0VIzc18yBTfIBTdA2Wd+f/BjcgQMdXDQnvfrxUvuueec+9xZ5Jkz556rSNtjrEY8E9MWp0n/pYG+wxAvSJ5HUVKYtsnQdwhCCCF0SGna4rS+YxBCCCGEEOK1odR3AEIIIYQQQrxOJMEWQgghhBBChyTBFkIIIYQQQockwRZCCCGEEEKHJMEWQgghhBBChwz...
[ "true", "false" ]
null
0
science
grade-3
compare-strengths-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.
"iVBORw0KGgoAAAANSUhEUgAAAmYAAABZCAYAAACUn+jbAAAN5ElEQVR4nO3dfVAUd57H8U8zCGNUENQVKBRWSRYj3hofD6GibkgI6mqiSZkH1GJdNVQif2S9O+uKSrkbqzYm2ah3lZI8UeJ5wcRKskUsTe3FRItLTIkkPiQ+cATjQ0DWCIyCYJhh7g8LoguBQWemu+H9qqIKxu7ffLv59cfvdA/Thtfr9QoAAACmCzG7AAAAAFxHYwa/OHz4sAzDuOkrLCxMycnJWrt2rRobG3s13iOPPKKMjIxbquXYsWNKTk7W0KFDb2l9AP2XVbL...
[ "The magnetic force is weaker in Pair 1.", "The magnetic force is weaker in Pair 2.", "The strength of the magnetic force is the same in both pairs." ]
null
0
math
kindergarten
count-sides
true
false
Which shape has 4 sides?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAEIklEQVR4nO3bOW4VWQCF4VPPQ8DQLbVQI1IkYAWILXTSm+gVsBr3CtiAicmICIhIAAdk7RaObLD0/Pze7aC4NIOHN1SdO/1fUlUqVekEvyqrLoQQDs+kg1PpZC6dBwEb2+6k21vSgxvS3V2pO5yG8Oo49SzU7Mkv0vb70/7i3q706GZfIbCpk7n09rP0z5n07lSaHJ/3N4gMQ7q91TclSZ/m0mT+zQ1gSLGpWZAmaaegFYQGC0KDBaHBgtBgQWiwIDRYEBosCA0...
1
science
grade-2
identify-solids-liquids-and-gases
true
false
Select the liquid.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAA1XUlEQVR4nO29aZAcd33///r2NdNz7jF7H1rJsi3JxrJNfIENxAbySyChKoRKgASS4kmSIqSohCTFA8hdqUqlKlwBigRyUCE8IeT/Cw6h8qNiY4ciPvAF+MDSrlbSXrM799Hn9/+gj5mVVtZKXkljq19Vo1n1dPf09Lznc30v8UhNyuuzkFdJSLisNDx4rgUrNgxrcPdQsF1JBJlwpcircH02+Lvp9bYriSATriSR/hzZ26ZcmUtJSDg3iSgTBo5ElAkDRyLKhIE...
0
math
grade-1
identify-thirds
true
false
Which figure shows thirds?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAIIAAAB8CAYAAAClm2iUAAAwc0lEQVR4nO29eYzkaXrX+fndcUdG3plVWVfX0d3V9z3MZc94xrODwcsYG+w1GFsYAwIEEkJIILDWYndBNiCMVwJpMebwrm3ZXh9jxuP2HD0z7sPTPX1fdeZVeUVGZNzxu/njiTd/kVdlVmZWdbWdXylUFZERv/jF+37f53ne53q1OI7jRQ8ut6ERQhBzhD8FMDXIG3AuA2M2aItuHL9U/6Bv6wgfJJ4ugHmpLU8mbLiQFZYc4U8+GiG814IFD95vg14P5A9HJPj...
1
math
grade-2
select-figures-with-a-given-area
true
false
Which shape has an area of 12 square units? The shapes are made of unit squares.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAKQAAADCCAYAAADHGGkGAAADzElEQVR4nO3dv25cRRjG4e+s/xQhcRoE4gICjVOnoIh7lPvJHcD1EHqcIk1auwmhxwga7MRSjFdDsbYETSKhnZ3Xe56nWa1WmhmtfhqdZr+dWmvt7Krq18uqi2XVdSvYmN2p6sFO1aN7VV/uV01nH1p7fT76WFD15KBq9+3l6s1X+1XffLaqFTblYln15n3Vb1dVv1xWLc6vVx+IkREe7Kzaq6p6t6xaLP/1AYxw297frWox9ijwX4IkiiCJIkiiCJIogiSKIIk...
0
science
grade-8
identify-rocks-and-minerals
false
true
Dolostone has the following properties: solid light gray not made by living things made mostly of dolomite no fixed crystal structure naturally occurring Is dolostone a mineral or a rock?
"iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAABpBElEQVR4nO29WbNl2XEe9q1hD2e6Q93qqu4muzGQEoIESQcBSHbYlMO0ZdkPepLtCOvRP9Ihhx/0IGtiiDQokaAogoDFRqO7uoY7nWkPa/DD2t/auU9VFwCCVadAnIy4cadz9tlD5srML7/MpWKMESc5yUleKfrYJ3CSk7zLcjKQk5zkNXIykJOc5DVyMpCTnOQ1cjKQk5zkNXIykJOc5DVyMpCTnOQ1cjKQk5zkNXIykJOc5DVyMpCTnOQ1cjKQk5zkNXIykJOc5DV...
[ "mineral", "rock" ]
null
1
math
grade-8
identify-similar-triangles
false
true
Are these shapes similar?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAD8CAYAAABNcdMMAABL5ElEQVR4nO3dd1zV9eLH8ddhCMhykOJEEBR37oEDrlaW5krTUlMzG9eRmaVZv8q6lg1vmZaVN0dWau7KhjnAlZIjRREBQQzFASooe/3+OHDMUtMEvgd4Px8PH8iZ79O9R958zmeY8vPz8xERERERkSJhY3QAEREREZGyRAVbRERERKQIqWCLiIiIiBQhFWy5KRs3buSuu+6iSpUqVK9enUGDBhEfH290LBERERGro4Itf2vu3Ln8+9//ZtKkScTHxxMeHk69evXo3r0...
[ "no", "yes" ]
null
0
math
grade-2
which-picture-shows-more-up-to-5-dollars
true
false
Which is more?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAe0AAACYCAYAAADJLLE9AACSrUlEQVR4nOy9d5xkVZn//751K+fqXJ3DTE/35JwzMDDAkCW5ghHUVddVf5vYr3HVDa76df2uOaGCgoBkGBhgApNzd890zqGqq0PlfO/9/VFdlx5BnUYaht16v168mp4OVeec2+c55wmfR1AURfEkoTMKIQnSCjly5MiRI0eOSwCtADYR5pqhWA+CJ6EoR4Pv9NvKkSNHjhw5cvwp1thB2xHNfOLWwzxLxqLnyJEjR44cOd55QhK0RWAkCe1R0ATTmS/kDHaOHDl...
1
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 both an integer and a whole number?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEuCAYAAAC08GWcAACGUUlEQVR4nO3dd3yT5frH8U920qZ7sQqUliV7o4CAiCigooB7e3Di1qMej1uPP7ce13EPEBcooKgIDkDZe+9ZoHukaXby/P542lBkQ9uMXu/Xq6+maZvc6Xjyzf1c93VrFEVREKIByXcE2Ffpp8QVoNKr4PAFcPoUHF4Fh09RL1d9HLxcfb03cJjrFCq86r9RrF6DWa/BrNNg1oMlePnA+79fZ6m6LsGkJdGkIcmkJcmsJdGkJcmkvo83akL8UxNCCCHE8dJIwBbRosS...
[ "–43.5", "–57.4", "0", "–67" ]
null
2
science
grade-5
use-data-to-describe-climates
false
true
Which statement best describes the climate of Rio De Janeiro? Hint: Summers in the Southern Hemisphere occur in December, January, and February. Winters in the Southern Hemisphere occur in June, July, and August. Rio De Janeiro, Brazil, is a city in South America. It is located in the Southern Hemisphere. It has a trop...
"iVBORw0KGgoAAAANSUhEUgAAAtgAAALLCAYAAADDkfUwAAD+TElEQVR4nOzdd1yV5/0//tc57HnYIHuIIIIMB4h7xhS3JsbGJDb55Jekzbe2Tdt0pJ/2k7ZpOpK2GR1p05jVmJioURRNXKioiAoiCgjIVvZeZ16/P47nliOoqOdwjsnr+XgchfuM+33OuTnnda5zDZkQQoCIiIiIiExCbukCiIiIiIi+ShiwbyA7OxsymQwymQwpKSmWLoe+hjZt2gSZTIakpKS7vi0fHx/peDac5HI5/Pz88Oijj6K2tla6bFVVlXSZjo6Ou9rvmjV...
[ "Summers have lower temperatures and slightly less precipitation than winters.", "Winters have slightly lower temperatures and less precipitation than summers." ]
null
1
math
grade-8
identify-congruent-figures
false
true
Are these shapes congruent?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEaCAYAAAArGyAnAABxP0lEQVR4nO3dd3yNZx/H8U+WnOyEiMTMMmMVVSGorWiVFkXVHrVa1RHVUi21HnvPFKUaaqZVapdQoyI0SEKEIEhIInud54/I0dROTnKfc/J7v15eTe5z7vv+ntfziF+u+7p+l5FarVYjhBBCCCGE0ApjpQMIIYQQQghhSKTAFkIIIYQQQoukwBZCCCGEEEKLpMAW4qH+/ftTtmxZMjMz8xwvXbo0MTExCqUSQgghhL6RAluIh86dO4eVlRU7duzQHLt16xampqY4Ojo...
[ "yes", "no" ]
null
1
science
grade-8
compare-concentrations-of-solutions
false
true
The diagram below is a model of two solutions. Each pink ball represents one particle of solute. Which solution has a higher concentration of pink particles?
"iVBORw0KGgoAAAANSUhEUgAAAbAAAAEVCAYAAACBn7B3AABz9UlEQVR4nO29eYAcVb33/TlVvc2Wyb5BAkNIgkACiIDsgrIIQdkeN+QKvoqXxyuP8rhd8XpdHleu4kUf8eGiF7kC3isqXAWRRVYXdgxLFAghCdlIyDpLT3fXOe8fVWep7p7JZDIzmek5Hw09XV1dXdVd3/qt55RQSik8Ho/H4xljBHt6Bzwej8fjGQzegHk8Ho9nTOINmMfj8XjGJN6AeTwej2dM4g2Yx+PxeMYk3oB5PB6PZ0ziDZjH4/F4xiTegHk8Ho9nTOINmMf...
[ "Solution B", "neither; their concentrations are the same", "Solution A" ]
null
1
math
kindergarten
count-money-pennies-and-nickels
false
true
How much money is there?
"iVBORw0KGgoAAAANSUhEUgAAAMcAAACDCAYAAAA5zA+8AABrSUlEQVR4nO39Z5gc53XnDf8qdnUO05NzxgwyMMgEsxjEJFGikmXJKwfZsldee+31s15b9sr7enefR7ZlS2vJSlawskQFZoIRAImc4wCYnGNP5678fuiZFrkSLQAElTB/XrwwwHRX1Tl1n/s++Qiu67osYxnL+DGIP+8HWMYyflGxLBzLWMZrYFk4lrGM18CycCxjGa8B+Y2+gevY5HM5sukUmXSK5MICuYU5sgUdEQhGYwQjZQT8fjS/n3A4gqKqCIIAgvBGP97PDI7...
[ "14¢", "15¢", "18¢" ]
null
0
math
grade-3
match-clocks-and-times
false
true
What time does the clock show?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACwCAYAAAA16xkbAAAQa0lEQVR4nO3dX2zd5XkH8OckTpPg01BG23iFIooPUldKbNRt6uqE7qKTfTF1U0JFaTWCJmCDdBJJVacXkKnJLogvaC9IpC4XxekCXVUybVOlnE4BDeLSimm1NVaKaqf/qdOVAuKcJM4fexcQxz5O7PM757UP5/jzubLl8573/SW++J7Hz+/55aampqYCAABIYkWjDwAAAK1EwAYAgIQEbAAASEjABgCAhARsAABISMAGAICE2hp9gFqdPn06Dh8+HENDQ/HSSy/Fiy+...
[ "eight fifty", "seven fifty", "six fifty" ]
null
0
math
grade-1
match-analog-and-digital-clocks
true
true
Look at the analog clock: Which digital clock shows the same time?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABMeElEQVR4nO3de3RU9b0//Pfee265zCThIpcEuamQYAGxJVEr7VMNrop1PcfQVqqnLfZi/fV4wFWxa/1a6FOw6yyFLkG7Vqv+BG2tlwo+z/JIeyTS0xMLJNoi0DIRCwHKhIABkuzc5rIvzx+TDBkyl+/cZ5L3ay0XmZnv7Pk2md35zHd/vp+PZJqmCSIiIiIiSgs51xMgIiIiIhpLGGATEREREaURA2wiIiIiojRigE1ERERElEYMsImIiIiI0siS6wlQHtBNQDdhDv0...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA5oAAAEJCAYAAAD1mFhPAABWaklEQVR4nO3de3RU9b03/vfee265zCQBIpcEuamQhALiKQlasU812Bbr+j0GRaqnPWit7XOODf4qdq2nBX+CZz2rQh9AXatVKuipVVHC77da0ZpIn3NigURbBEomYrmaiYABkuzJZW57798fQ4YMmcue+0zyfq2VlczMd+/5kszW+czn8/18BU3TNBARERERUVIIgpDpKRBlnJjpCRAREREREdHowkCTiIiIiIiIkoqBJhERERERESUVA00iIiIiIiJKKgaaRER...
0
math
kindergarten
circles
true
false
Which shape is a circle?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACbCAYAAACao4KyAAAMIklEQVR4nO2d649dVRmHf2vf97nPtZ0ytLW00FKs2NYCNWiMXISieEk0Ev87jYQvgighDRECqGhDBYwtpTMQCp1Op9NzZs5t3/defjiMFoLUs++X90mayczk7L06+znvetd611qHcc75dQdYNYChD3gcBBEZiQFNEThUA3YpALtuc35ukHWziDLzQAuQVozJN0sKcE99YiFBRGXoAx+MgXUHuGwAwsCb/IIkI+KkKU6cAoCRDwj+Lb8giDjZccrlgJBtU4iqQKI...
0
technology
grade
font
false
true
Identify this font type
"iVBORw0KGgoAAAANSUhEUgAAAPoAAABQCAYAAAAwa2i1AAAIQklEQVR4nO2dv27iShTGv+u9L5EqKbG85B1WsiCR0m9LmQJBtBLaZ1hFoERykZI2PcJYQuId0BpvGSqeIvItro7XEGzPGAOB+X6SlYQ/nvGc+Txnzpxx/onjOAYh5Kyxjl0BQsj+odAJMQAKnRADoNAJMQAKnRADoNAJMQAKnRADoNAJMQAKnRADoNAJMQAKnRADoNAJMQAKnRADoNAJMQAKnRADoNAJMQAKnRADoNAJMQAKnRADoNAJMQAKnRADoNAJMQAKnRADoNA...
[ "Verdana", "Courier New", "Garamond", "Quake" ]
null
1
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?
"iVBORw0KGgoAAAANSUhEUgAAALoAAAHCCAYAAABYCNPpAAAuXElEQVR4nO2deZhcVZ2w33tv7V3VXb0vIQmBBJKAQEggQNgCyjIMOMAgiArj+I24gaPjhn7DOIqf47gNuI0CM7gii4KoiKAkIhDCEgICIWQjZum9q6q7qru2e+/3R3U3naT3rrr33HvP+zx5Ok/S3XXq3rd+93fO+Z1zFNM0TSRzYm/WZEvGZEvapCNn0l806S/CgF762l80GRj+2lso/Uy9H6p9CjFf6Wu1D2Ja6Wu1T6EtpLA8qrCsSqU1aO/7cwOKFH367MvBq2m...
[ "repel", "attract" ]
null
0
math
kindergarten
represent-numbers-up-to-20
true
false
Which picture shows 6 triangles?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAZYAAABcCAYAAABN/JPwAAAGKElEQVR4nO3dTW9UVQDG8Wc607G2TCn2/RVIUBO/AJ/Ctd/AT8AX0LUJrNhZcEvjRlOTsqqJScmQ6IY2KZgUQxtwcEFbpgkMzXVxmZGYaEp75p7z3Px/GyUs5vxXD03vmVvJsix79lr6/Ug6PJbeZAIA4MRqFalRlT4elqbrUuXZqyxrHsQ+FgCgDK6OSrVHR/kfZuvSpyP56gAAcFKHx9J2W3r6Wnp4JA0cvMn/glEBAJxGo5pviCS9PJYGjt/5CwAATqO7IZ1...
2
math
grade-2
identify-repeated-addition-in-arrays-sums-to-10
false
true
Which addition statement describes the array?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABsCAYAAABQF8VPAAAMTUlEQVR4nO3dMWiT+R/H8U/+OCgKiV0qLk3sKJgEnURJAlduumu63CZNJkWHNnBXbsvT7TiRpmMnn6KTSwpOZw/6yImTh08LjjGPS9HFRKj0tuc/5Jra06Z9kt/TtMn7BYUqeZ58P0Pgw7dPnidiWZYvAH1RLpf7PQIAADDsf/0eAAAAABgkp3Z+YZMGHJ35+fl+jwAAAELCBhsAAAAwiIINAAAAGETBBgAAAAyiYAMAAAAGUbABAAAAgyjYAAAAgEEUbAAAAMAgCjY...
[ "4+4", "5+5+5+5+5", "1+1+1" ]
null
0
math
grade-4
multiply-fractions-by-whole-numbers-using-models
true
false
Which model represents the product 4× 1 4 ?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAaAAAACOCAYAAAB359yrAAAPsElEQVR4nO3dPWwbd5rH8Z/zBiPSLlksTrqKtJQ7d6LcJLaLiCrs6hJJTSophooAu84FMLBaVzZI2q7iE2BgF4mLABEkdSlCx1vJhUcJEAfZZqitNnu0KVwREd6CSejAm4vBK3gzlvUWvczM/yH1/QBE4hAZjuZr4eF/OCSPtFqt1tpP0n//KP3wRPq5JQAAIvfCEelXz0v/9rLU95J0ZO2frdbX37veLQDAYfLar6UX/v5j+w//+pJ0vKc9nQAAiNoPT6S/PZK...
1
science
grade-8
compare-thermal-energy-transfers
false
true
The table shows the same data about how the temperature of each refrigerator changed over 10minutes.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAABfCAYAAACdpLOcAAAs/ElEQVR4nO3de1yMaf8H8M8UnYsOYgmNqEnGSKJ6nCosySmndViLtUgOtUuL6FkqYdtH1hKrsGs9tIjfI6eQQ3LqgFbSUjmVRXTSTE2H+f1hmzXN1NxTM51836+X10v3fR2+93Vf13R1zTX3sLDtXyIQQoiSnBgciDFX1jR2GIQ0azSOCGFGtPhqY4fQJKk1dgCEEEIIIYQQ5aEJPiGEEEIIIS0ITfAJIYQQQghpQWiCTwghhBBCSAtCE3xCCCGEEEJaEJrgE0IIIYQ...
[ "Thermal energy was transferred more slowly into the refrigerator with its door open.", "Thermal energy was transferred more slowly into the refrigerator with its door closed.", "Thermal energy was transferred into both refrigerators at the same rate." ]
null
1
math
grade-3
compare-fractions-in-recipes
false
true
Does this recipe call for more cheddar cheese or picante sauce?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAFwCAYAAACCdAwbAABhdklEQVR4nO3deXhMV+MH8O9smaxEQhKJBk1oi9gyr7WIrQvSl6K2qKgltlhKWi9aUWtrC79o7VrU2iqN2imlBEGQRlQQRCZ7Joskk8zM/f0RmWZk1xlJ9ft5Hs/7ztxzzzn3Jn3mOyfnniMSBEHAU4IgQKfTQaPR6P+JxWLIZDJIpVJIJBKIRCIQUfUkCAK0Wi00Gg3y8/Oh0+kglUr1/8RiMf8bJiIiMjFRYcDW6XTQarXIz89Hfn4+ZDIZLCws+GFM9A8mCAJycnL...
[ "picante sauce", "cheddar cheese" ]
null
1
math
grade-4
measure-angles-with-a-protractor
false
true
Is this angle acute, right, or obtuse?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEVCAYAAADaTZLyAADlb0lEQVR4nOy9d3hc53mmf08HZtB774UACIAFIEGwd1Ik1WVJtmXJdtySONnEu8lu8tuWTbLFiWMnsWVbtixZsrpISiRFsYMdIHoneu91BjMDTP/9McAhwSaQAKu++7p8WZg5c853wJnBc97zvM8rc7lcLgQCwSPB/v37efLJJ+/3MgQCgUAg+FIjEwJbIHh08PPzo6Kigri4uPu9FIFAIBAIvrTI7/cCBALBwvCTn/wEvV7P66+/fr+XIhAIBALBlxpRwRYIHhH8/Pz...
[ "obtuse", "right", "acute" ]
null
0
science
grade-4
compare-properties-of-materials
true
false
Which would stretch the most?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAA9n0lEQVR4nO29eZgc1Xn/+zlVvW+z9WgWjbYZ7RKgBSSx2KwGh8VxIF6wzWM7tpM4uTZ2QhwS+F3HSRxvsa9zwQGS+Dp2bIiDV8B2AgQvLDJCLAIJAdqX0ewzvS/VVXXuH6fXmZFGmunRtER/n6ee7qnuqTpV9e33Pe96xHNRKVf4IahTRx2nFXELXk9CnwFNDrikUe3X6oSsY64Q1GGFX71PWKX9Wp2QdcwlCvzLydI+bW6GUkcdx0edlHXUHOqkrKPmUCdlHTW...
2
science
grade-3
compare-properties-of-objects
false
true
Which property do these three objects have in common? Select the best answer.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADQCAYAAAByQhWRAAD2q0lEQVR4nOy9d5wkx3mf/1RVh4k7my/niEMkMhEYwAQGiaQCKVOWfhKVLVrBypZpWZJly5Zky1aiFW1lkVQgJZEESIokQIAEQJBEOtzhAi7u3t7myZ2qfn90T9p0t4dwd7h+7rO3Mz0dqnt7Zr711vd9SxhjDECz2WR8fJxyuUwYhqSkXGwsy6Kvr49169aRyWRe0mOl93/KpUZ6/6dcybyc939KyisRYYwxjUaDI0eOsGXLFjKZDLZtX+x2paQQBAHNZpNjx46xa9e...
[ "stretchy", "flexible", "slippery" ]
null
2
math
grade-7
similar-and-congruent-figures
false
true
Are these shapes congruent?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAD2CAYAAADs6vBqAABnG0lEQVR4nO3ddViVWbvH8S+dEopYIIjY3TUG1lg4drci2N1id43dgmONHTOog6Jit6goKmJggQqChFKbff5whvMyODMG8BD357q8jjz72Wv99nud1/dm7bXuR0OtVqsRQgghhBBCpApNpQMIIYQQQgiRlUiBLYQQQgghRCqSAlsIIYQQQohUJAW2ECJD6927N1paWmhrayf74+rqqnQ0IYQQ4rO0lQ4ghBD/xtfXl71799K6dWulowghhBBfRFawhRAZVmJiIn5+fpQ...
[ "yes", "no" ]
null
1
science
grade-2
identify-mammals-birds-fish-reptiles-and-amphibians
true
true
Mammals have hair or fur and feed their young milk. A sea otter is an example of a mammal. Select the mammal below.
"iVBORw0KGgoAAAANSUhEUgAAAtMAAADMCAYAAACx6y9WAAEAAElEQVR4nOy9ebglZXmuf39DDWvae/fcNCCjjcpgBBEVNRJlFHEACVP0gFPEIeIEaowScvSKovEnIRFUVASDovEYSYygMQQhyhBAHCIoiEDPwx7WUMM3/P74alXTNkPTbsWTU/d1cdG991q1vlVVvdZbbz3v8wjvvTfG4JyjoaGhoaGhoaGhoeHRkVKitUaUZembQrqhoaGhoaGhoaHhsSGlRDaFdENDQ0NDQ0NDQ8NjxzmHfLwX0dDQ0NDQ0NDQ0PB/K00x3dDQ0ND...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA4IAAADMCAYAAAAmsx3gAAEAAElEQVR4nOy9ebgsZX3t/3mnqure85k5gCCjA2jU4EQciAOKOIJGI+rFmBjHaKKRxHi9XvPTJ07xajBxjAMa4xAfowaHGMNFMIKIXKeICjKe+Zw9dXcN7/D7432reh9AOOARzb29nmc/cPbuXV1dVd271rvWdy0RQgjWWrz3TDDBBBNMMMEEE0wwwQS3DSklWmu+tQzHT8GM+lXv0QQT3DJWHPxoANtqWNDwW/Px+3JCAieYYIIJJphgggkmmOD2wXuPtXZCAif...
0
math
grade-8
front-side-and-top-view
true
true
If you look at this object from the side, what will you see?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAGHCAYAAACK4yW6AABjtElEQVR4nO3de0DUdb4G/mfkJtchUASSwD2iBp0YwjVtoVB3C8xV2yTbLUNWO7rbSYSOu8dLAq3a/vLkeOn8FndVvCy7JXg0V0P9rYKiYYYytmKEFpOjgCIEDFdhmN8fw3wDQuQyM9/5js/rnxP3j9p2nvn4/r4fmV6v14OIiIiIiEximNgHICIiIiKyJQzYREREREQmxIBNRERERGRCDNhERERERCbEgG0Bu3fvxkMPPYSpU6dCpVKJfRwiIiIiMiMGbDNSqVSYOnU...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA3gAAAGHCAYAAADiNfCrAABwm0lEQVR4nO3dfVzUdbo//tfIIHI7BILASuAeQYNODOHXpCBRdzcwU9sk3e6Q1VbPtomwx21TE2jV9uTJ8W5/q2dVvIndAjyaaagnhSJDDWVohQzdmBoFBCGY4UaEYX5/DDOpIXIzM5/5jK/n47GPgmFmLoTaz6vr+rwviV6v14OIiIiIiMxCIpEIXQLdw4YJXQARERERERGZBwMeERERERGRnWDAIyIiIiIishMMeERERERERHaCAc8Kdu/ejfvuuw9TpkyBUqk...
1
math
grade-7
identify-trends-with-scatter-plots
false
true
Does this scatter plot show a positive trend, a negative trend, or no trend?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAFhCAYAAABK/t0lAAAgtElEQVR4nO3df3TV9X0/8Ff4EX5IKAQwkFAKBy0hqyM0/IjSY2vdoTKbip522rqt1snUna262rVu59Qxf3Ssp5tWqlXXo621LaelHpg7inqGtcohATNh1gRbLT8TEo0ESUAIQr5/+CUrM0HgfnJv7r2Pxzk9h3vfyX09OXJOnn3nfd+3oLu7uzsAAIBEDMp0AAAAyCUKNgAAJEjBBgCABCnYAACQIAUbAAASpGADAECCFGwAAEhQ2gr2wYMH4+DBg+kaBwAAGZG2gr1...
[ "negative trend", "positive trend", "no trend" ]
null
2
math
precalculus
determine-one-sided-continuity-using-graphs
false
true
Is f(x) continuous from the right at x=1?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABz3klEQVR4nO39e3QU550n/r/7flFLal1AEgIJhJDQnTvmZiA4tsdOPIFMxk5OLs7JZNbZZJLMd2d2852dzdmZ8fpkdyYzvziXzWY3GzuzM5uJf2M7sbHA2GAgwkYgQKglAUKA7reWWq2+VFdVd9X3D1kCGTASrodWo/frHJ9Era43H9XT/fSnq5+uMum6roOIiIiIiAxhTnYBRERERET3EzbYREREREQGYoNNRERERGQgNthENMPhw4exfPlyPP744wCAT37yk3jllVd...
[ "no", "yes" ]
null
1
math
pre-k
name-the-shape
false
true
What shape is this?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAWE0lEQVR4nO3d669d5X0n8O8+59g+2PgYDL5gAzYGws2GktgkhAJJBpKohHakmUwyHc0oajRNOp1Gavuif8RMM2qqKkMaRZm20+m0edE0TdIGQhIu4U6G+8VgzMXgG8Y2vh/be14sUwiBcC5r7WfvtT8fyTpblrz210f70fmetX7rWZ1ut9sNAABQi5HSAQAAoE0UbAAAqJGCDQAANVKwAQCgRgo2AADUSMEGAIAaKdgAAFAjBRsAAGqkYAMAQI3GSgegYft2JLtfTva...
[ "triangle", "circle", "square" ]
null
1
math
algebra-1
identify-linear-quadratic-and-exponential-functions-from-tables
false
true
Is this function linear, quadratic, or exponential?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEqCAYAAAAvYSeKAAAgAUlEQVR4nO3da1RWZf7/8Q8n8QBxG2ISZQKZoJbioKZWNmlozVhjngAFmUzTTFctVx6W5hgpWpkpmJgjmiXW31Njphlm41QaOFOazqikoeZhFIMIIU1O/weu4TcMiJpfhDvfr7V8wLX3vq5r++jNvTb7dpk17XiZnMAfRzXR0uTva3sbNW7Cn26u7S0AAADgKrjW9gYAAACAXxMCGwAAADBEYAMAAACGCGwAAADAEIENAAAAGCKwAQAAAEMENgAAAGCIwAYAAAAMEdg...
[ "exponential", "linear", "quadratic" ]
null
1
math
kindergarten
triangles
true
false
Which shape is a triangle?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAFvElEQVR4nO3dTYscVRSH8ae6e2YRM+NCUFw5BNSFZJ2lXyeIIPkogmi+jtsQsglZxIiMK8eFkEwnA0mmu1xULplJ5qW76r6ce+7/2RVNwenmR0HXy62u7/v+6A38eQLLFZz2KDW5RQd7c/j6BnyxC93R675/cFx6LOW5O/uweHYybHy5C99+MihUamrLFTx9Bf+8gT9OYHZ8OnwgZCpme/PBFMDLFcxWZz5QKmbB1NseZmVHUa0kaCpLgqayJGgqS4KmsiRoKku...
1
math
pre-k
tally-marks-up-to-10
false
true
Count the tally marks. What number is shown?
"iVBORw0KGgoAAAANSUhEUgAAAMgAAABBCAYAAACU5+uOAAAJX0lEQVR4nO2dX0xb1x3Hv47pPNvZiGQIVCRAlCkwYEpSiSLVfaijUWkaC29BeWz6sk3Zyyole5qqTJrUPk487GHtHjd4gzWatESh00olmBp3kqlMqshgkg2M3eHG1+AFcvfg2vyxfc859/yufa45n6fIl3x9fe/5nfP7d+/xmKZpQqPRVOVEo09Ao1GZFiqhvLGLtRUD/oAX3edOaj0HiMey8HiAvsHWY6GnAtIGEo9lMTu9guWlbPkzf8CLN39yBj/8cRcCQbGviMe...
[ "2", "5", "7", "8" ]
null
3
math
pre-k
count-sides
true
false
Which shape has 5 sides?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAADR0lEQVR4nO3aP24cdRzG4XftXYNCAg04QgEpDXCE3CJF6pwhRQ6Sg+UGIXQUmNZOLMXYGoqVRYQITcbv/NnnqXY00m+/xUezO/ObzTAMw9lV8ttlcnGTXA+Bz7bdJA+Ok5/uJQ9Pks3Zh2F4fT71WKzZk6+T7dvL/cH3J8kvX+0rhM91cZO8eZ/8cZX8epkcnV/vT4iMMT043jeVJO9ukqObj07AmG6b+mtIjqYdhUMhNCqERoXQqBAaFUKjQmhUCI0KoVEhNCq...
0
math
algebra-1
factor-quadratics-using-algebra-tiles
true
false
Which area model represents the factorization $6 x^{2}+8 x+2=(3 x+1)(2 x+2) ?$
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAVUAAAEdCAYAAAC8B/QvAAAUo0lEQVR4nO3de2zV9f3H8dc5p6XAKW0jLVigXFoQYYCFyozgJhgrmWJMBDfNppvJNrNgMmemiRn/bH9oJJmXZGHOX3TZMmEzwRkYTChemDrDMC1hAeaASkfLgfYUegqnpe053/P7o9BAhV7fh8+5PB//4PkSz+fNKyev8/me72m/vkQikTjVLR3tkM7FpVhCAIAhyvFJEwLSnPHS5DGS71RXIvGvdtdjAUD6u61AyjnS0fugdIw0N9jbuACAoTkXl76ISqFu6b8...
0
math
grade-5
compare-fractions-and-mixed-numbers
false
true
Which sign makes the statement true? 1 5 1 11
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACWCAYAAADkHv8wAABEfElEQVR4nO3dd3xUZdbA8d+dnt4DCQkloYYaOgoC0kFFaQo2BPu7q67u2l11FWxYsaHSEVEBC4IKCCK9CUgvoaf3PpMp9/1jkmBMgJSZFDnf/ewaM/c+zxkZP3vy5NxzFFVVVRo4vV7PCy+8wDPPPFPXodQqi8XCoUOHOH/+PKmpqeTk5ADg6+tLSEgI0dHRREdHYzQa6zjS2nWlfh6EEEIIUT/o6joAUXUWi4U9e/awZ88eLBZLuddzcnLIyckhLi4Oo9FIbGwssbG...
[ "=", ">", "<" ]
null
1
science
grade-6
identify-ecosystems
true
false
Select the hot desert ecosystem. This ecosystem has: long, cold winters and short, cool summers many evergreen trees soil that is poor in nutrients This ecosystem has: a small amount of rain dry, thin soil many different types of organisms This ecosystem has: long, cold winters and short, cold summers mostly small plan...
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAp8AAACtCAYAAAD2xRSHAAEAAElEQVR4nOz9d7Rkd3nmi392rF05nTo5dPfp0zm3WmplCQkECBtjkrkGzGAGh7GNPU7M9Sz7esbL8FsMM75g+5qBMTZgkoVBmCQhqRU7SGp1UOc+p0/OleOuHX9/7Krd5zTC2DO2sU09a5W60t6161u1dZ563vd5XuGFkutuDUNUooMOOuiggw466KCDDv5JULHhcg2EsuW6HeLZQQcddNBBBx100ME/NSo2CK7ruj/sA+mggw466KCDDjro4EcD8tobu+96Nf0...
1
math
kindergarten
compare-two-groups-of-coins-pennies-through-dimes
true
false
Which is more?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAlYAAACYCAYAAAAm2KfyAABatElEQVR4nO39d5hdZ3no/X9X3b1O7zOSZjSjXq3uDrZxpRkIJYSThITwcsI57+E9L0nIC8kvnHOSkxAgCQdMQgs9Nthg3OQm2+q9jkbTe92z+96r/v7YmgkOJMhmJI2s53NdXJaxNHvdW89zr3s96ymS67rumAEXcpC2wXIRBEEQBEEQLoEqQUiBVj9U6SCNFV33QOpqX5YgCIIgCMK1bUsY1K5c6V9qdFgeKFVdgiAIgiAIwq+WtqEzC6MGnM+BnLJK/0EUVYI...
1
math
grade-5
compare-fractions-and-mixed-numbers
false
true
Which number is greater than the one shown?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAAlVUlEQVR4nO3daXAc6X2Y8aenZzAXZgb3RZy8AN7kXlySu5SWK68sUbuJKEeKVElKistJxU6lKpVU8j1VSb6kKp+iuFJlW6lyZMdlS7YkW45NaVdcLbnkLi8sQQIgSIAECOLG4J7B9EznQ88MrrnP5uL/q9rVChj0NPgUG423+31b0XVdRwghhBBCCFEQ1nLvQDJhDVQrPOlfY256DU0PMD+9xvTEKiuLIdaDYdaDYYIBjbUVDQC7U8Vut1LhULE7VJxuG4173NQ2OKl...
[ "4+3/5", "5+4/5", "4+1/5", "4+2/5" ]
null
1
math
kindergarten
one-less-with-pictures-up-to-10
true
true
Count the apples in this group. Which group has one less than the group you counted?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABmCAYAAADxjOYpAAA3+UlEQVR4nO3deXxdV33v/c/eZ56P5lmyJFuybHl27DhOAm0mhhIKmaCUobTQ0lvgMrQPpdynpQPlwgVe5fbSPtBehvZpC7cpZWwDhRKI4wyO40G2ZdmaZ+nozPOw1/1DtmJjO7EdSWfL/r155YV1vPc+65zt715La+21tqaUUgghhBBCCCGWhV7uAgghhBBCCHEjkQa2EEIIIYQQy0ga2EIIIYQQQiwjaWALIYQQQgixjKSBLYQQQgghxDKSBrYQQgghhBDLSBrYQgg...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA1YAAAB+CAYAAAAnS4CtAABQR0lEQVR4nO3deXxcZ33o/885s++jGe2rtS/e7cSOs0GbkARoQoEkQGmB0kJLW+AWaH+U0tvtllJa6K+0F3rh9hZof7fALbdlbcPSssRxnDheZdmSrH2XRrPvyzm/P0aS5Xi3bGtkfd+8eDkanznzaI6/33O+z3me5yiAjhBCCCGEEOKm0HWd2SycS0KsAHm52r7jGBVwGaDdDlXm4msKUlgJIYQQQghx08xmdF6IrncrxO2y3w2VZjCud0OEEEIIIYS4kwwmi3/...
2