Datasets:
stemdataset
/
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
engineer
grade-8
laboratory-safety-equipment
true
false
Select the fire blanket.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AAAsrElEQVR4nO2deZRdR33nv7+qe+/belGru7W0LcmyLVu2LLMZYgxObAMzHCATQoITZsiQSWbgZIEMjI0XyUkHvMk2yZAJnCELkJwDgeSEDIcAgWM2w3FszGIbhIRk2ZYtW4slWerlbfdW/eaPe+97923d73W/191P+n3Okbr7vXur6tatb9WvfrUBgiAIgiAIgiAIgiAIgiAIgiAIgiAIgiAIgiAIgiAIgiAIgiAIgiAIgiAIgiAIgiAIgiAIgiAIgiAIgiAIgiA...
1
math
grade-2
place-value-models-up-to-hundreds
true
false
Which place-value model shows 784?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAV0AAACuCAYAAACV+d60AAAgDUlEQVR4nO3da4xc533f8e+5z5y57+wuRZEiJZESRdmuEsmXmE4TO0jdoEDaomrhF3GBAA7iFqjRqgLS9IVrtEH7wnBRNC0Q9EX6okCAukFfxC6KNkWapoIrVUqlRBdHtCjLEkXzspeZOXNmzv2cvpid2+6cWUacHZKz/4+wILVz9j/PLnf/8+xznvM7SpZl2Y0QrvShm0CcIYQQYkF0BSoaPGbDCROUG0GWvezc7WEJIcTq+0wV9Hf6g/85acKF0qAjCyGEWIx...
1
science
grade-4
use-data-to-describe-climates
false
true
Which statement best describes the climate of Miami? Hint: Summers in the Northern Hemisphere occur in June, July, and August. Winters in the Northern Hemisphere occur in December, January, and February. Miami, Florida, is a city in the United States. It has a tropical monsoon climate.
"iVBORw0KGgoAAAANSUhEUgAAAtgAAALOCAYAAACTXGSDAAD3xUlEQVR4nOzdd1yUd7r//9fMwNClSFOqYEUUsYHYS4yJJdZNskk2nnVzUjb79Wxv2VO25Ow5u8nZzcbs/rKbnmyKCaagmKhR7IhKEaki0pRehzL1/v2BMxHBEh2YUa/n42EC99xz3xczN8N7PvMpKkVRFIQQQgghhBB2oXZ0AUIIIYQQQtxOJGDfQjIyMlCpVKhUKqZOnerocsQd6PXXX0elUjFlypSbPlZgYKDtev7ss8/63GYymfDz87Pdvnv3bruf/3pER0ejUqn...
[ "Winters have lower temperatures and less precipitation than summers.", "Summers have lower temperatures and less precipitation than winters." ]
null
0
math
grade-7
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\n6\n of a full turn", "1\n5\n of a full turn", "1\n9\n of a full turn", "1\n7\n of a full turn" ]
null
0
math
grade-1
purchases-do-you-have-enough-money
false
true
A soccer ball key chain costs 74 cents. Do you have enough money to buy it?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAB3CAYAAAB2WzTHAAB8YElEQVR4nO2dd3gc1fW/35ntq91V712y5F6Qu8EFNzoGY4oxvQeCIaGEhJ6QkIRvCkkISSCkgYHQTMdgG2wM7lXutmT1XndX2r7398dqF8uSbMnYmB+57/PsY2vqnTtnZs6cOfdzFCGEQCKRSCQSiUQikXwnUE91AyQSiUQikUgkEsmJQzr4EolEIpFIJBLJd4gT7uC3+QS5y+ycttJBm09m/0gkEolEIpFIJN8kA3Lwl9b6eHyv+6iO+2dNfso6g2xrD3D95s6v3UC...
[ "no", "yes" ]
null
0
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?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACgCAYAAAA2PRuAAAAVNElEQVR4nO3dW2yb533H8R9PJiXRpCgmTJTJcuz6FEu2ZUm2LMmF3aJFm10sARKgRd1kCwbUvYgXIFjXFXBioF2CDctsDEsv1os02OyiueiQi2JZgK61F0muK59k+aDYTiyf4kQNRUqiKFLiYReKJLtIbMt+yecl9f1c8QVIvj/YvPj59fP8H0c+n88LAAAAgCWcpgMAAAAA5YSCDQAAAFiIgg0AAABYiIINAAAAWIiCDQAAAFiIgg0AAABYiIINAAAAWIiCDQAAAFi...
[ "equal to a right angle", "greater than a right angle", "less than a right angle" ]
null
1
science
grade-3
use-data-to-describe-u-s-climates
false
true
Which statement best describes the climate of Los Angeles? Los Angeles, California, is a city in the United States. It has a mediterranean climate.
"iVBORw0KGgoAAAANSUhEUgAAAtgAAALOCAYAAACTXGSDAAD8DElEQVR4nOzdeXyU5b3//9fMZCb7SjaWhBD2EELCFgi7IKIIsorWjdZ61NYe2trT1tbzbX+t7ek5rZzWivXYumurosElgCJb2EOALASSEEJIwpJ9nSyzXr8/QgZCgqBMMgN8no+Hhtxzz8xnZu7c855rrkWjlFIIIYQQQgghnELr6gKEEEIIIYS4mUjAvor09HQ0Gg0ajYbx48e7uhxxC3rjjTfQaDQkJiZe922Fhoai0Wh44403rvu2rpc7/m0587n+pjIzM1m1ahU...
[ "The winter months have higher temperatures than the summer months.", "On average some months of the year do not have any precipitation." ]
null
1
math
grade-2
equivalent-amounts-of-money-up-to-1-dollar
true
true
Look at these coins:Which group shows the same amount?
"iVBORw0KGgoAAAANSUhEUgAAASMAAAA/CAYAAACrQ655AAAxRElEQVR4nO29d5Rc13Wn+91Yt3JXdXV3dc4BmQhEIAkSpAhIIm1KohUoUWkk2dLTeJTGXvPGnvVkyWOv96wJHkuW51nRtgIlKzGIGSQBRsRuoJGBzjlUVVeum98f1WiRFkSBFCkCevWtxQWAq6vrnoOuH/beZ+/fEVzXdalQoUKFNxjxjX6AChUqVICKGFWoUOEKoSJGFSpUuCKoiFGFChWuCOQ3+gF+13Adm2KhQD6bIZfNkF5aorCUIF/SEYBQJEqwqpqA34/m9xM...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAc8AAABoCAYAAACXFnvJAABRQ0lEQVR4nO29d5hchXnv/zltet/Z3dnem3rvEqIJMAZMMTa2Mcl1y03BDvimXOd37RTnyXWKfZ3EpLgkJMbGTowpBoQQICEQ6l1araTV9j6zO72ec35/zM5BsrHNCgGyOZ/n2Wel1ezMOe+Mznve9n0FQMfExMTkXUbXdcZycDYFcRUK5pXJ5ApCFsAtQZsDKi0gYDpPExOTK4CxrM7e2Lt9FCYmv5zVHpDf7YMwMTExATiTKn6vskCHs3iXb2JypRBX4XQSRnP...
2
math
precalculus
determine-continuity-using-graphs
false
true
Is f(x) continuous at x= – 1?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABlBElEQVR4nO39e3QU94Hm/z99U+t+QQJJli1hjI0NBmwMdsDgy9ixHTvxBDwZnJxcnJPJxNlkcpnd2Z1fJpOzM+Pxye7kcpJJskl2M7GTmdls/I2djO0IggM2RMTGyFgGQQBjkBCgS0stqa9V3V31+4NIQVyMBPWh1fB+nZMTd6vr4aOq7uqnPqqu9rmu6woAAACAJ/z5HgAAAABwMaFgAwAAAB6iYAMAAAAeomADmGDjxo2aPXu2HnjgAUnSe97zHj3zzDOnfWwmk9E...
[ "no", "yes" ]
null
0
math
grade-3
identify-two-dimensional-shapes
false
true
What shape is this?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADOCAYAAAAEw3WqAAANjElEQVR4nO3d225cZZrH4bdb3fcwVzV3SCRLPnHkbJCSJhNAjBEgOQdEEA4GEk6cqnK5bMfbouyy1/rmwGQmpOPEq7xWrd3znLXYtCGO9PPX/673bymlFAAAQCn+XvcXAAAAXSKwAQCgRAIbAABKJLABAKBEAhsAAEoksAEAoEQCGwAASiSwAQCgRAIbAABKJLBb7t52FgcXdX8VAAC8JbBbbDhL8a+dPFYHl3V/KQAA/Elgt9j9cRYpIp4fpdg8yOv+cgAACIHdWq+...
[ "triangle", "hexagon" ]
null
0
math
pre-k
one-more-with-pictures-up-to-10
true
true
Count the triangles in this group. Which group has one more than the group you counted?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAFACAYAAACGDgu2AAARyklEQVR4nO3dv25eVRbG4Z0RLR0tl8BVOnMRCDdY8rSeio4gJXFqRIopHFEQxXIQwgVyYsc+35lihDJZxvj7s845e28/T+kCHWeleJX9k3g0juNYAACAFP9Y+gMAAKAnBjYAACQysAEAIJGBDQAAiQxsAABIZGADAEAiAxsAABIZ2AAAkMjABgCARAY2AAAkMrABACCRgQ0AAIkMbAAASGRgAwBAIgMbAAASGdgAAJDIwGYRb35flW+eXC79GQAA6QxsZrcax7J3dFG...
null
[ "iVBORw0KGgoAAAANSUhEUgAABDAAAAFYCAYAAAClCwyGAAAay0lEQVR4nO3dPW+d53kH8Ju1EtRplEnoy6BuaSd3zdwhQBZ/iDbtkCkfQspXaONIiwgzYxjUiKdYBiRLQ5YY1hCkFDxYkEq5ggVEoUSKPOfpwLCKLprieXlerue5f7+FACHbz+VLPhD/5/r7bJRSmgIAALSiaZqy+7KU+89LeTYr5ciftgFWcmGjlItvlfLdb5XyN98sZaMIMAAAoDW7B035zR+GfgqAafned0q5MPRDAADAlOw8P/76d98s5R//6vjdQwCW92x...
1
science
grade-5
use-data-to-describe-climates
false
true
Which statement best describes the climate of Rome? Hint: Summers in the Northern Hemisphere occur in June, July, and August. Winters in the Northern Hemisphere occur in December, January, and February. Rome, Italy, is a city in Europe. It is located in the Northern Hemisphere. It has a mediterranean climate.
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAK3CAYAAAC/cTiKAADjo0lEQVR4nOzdeXxU1f3/8dds2feNELKREEJCIIQtEDYRQRQFWaxSN9SvX5fa2lbb2tYuP9va1S5u7dfWiluroqAQFpUtLEIASQiBBJIQyMKSkH2d9fz+CDMQEjTIJDPo5/l48CC5c2fuZ+be3HnPmXPO1SilFEIIIYQQQgin0Lq6ACGEEEIIIb5KJGBfhXJyctBoNGg0GsaOHevqcsTX0PLly9FoNIwZM+aKHyssLMxxPNv/abVaIiIiuPvuu6msrLzyggfYCy+8gEa...
[ "Winters have more precipitation and lower temperatures than summers on average.", "On average the summer months are colder and drier than the winter months." ]
null
0
science
grade-5
identify-mammals-birds-fish-reptiles-and-amphibians
true
false
Select the amphibian.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAADH8ElEQVR4nOz9ebQl13XeCf72ORFxpzdP+fLliEwgMzEQBAmCBEeRokRRsgZKlizZZUmW7WpXabntLrer7O6u7nKVy6vdXctTe5W77LZXeyhZ1mBblmRNlESJgziABAEQUw5I5Jz55umOEXHO6T/2ibg3IdCmCP9RvZauFoXMl/fdGxFnn72//e1v7yPP7IdwvgPTlj98/eHrf5OvQwcXe3A3h/kEPjCnPzd/aLh/+Prf+mvawvmO/rnrxj83f2i4f/j6/4dXZad...
0
math
grade-2
read-a-calendar-ii
false
true
What date is 1 day before October 14?
"iVBORw0KGgoAAAANSUhEUgAAAssAAAGvCAYAAACthZgKAABecUlEQVR4nO3de1iUdf7/8SfDQQQF5OxZPJ/whGaKRKmlaXa0vum222ZWlra19rNcWjusmVvWVlab7VZrdtLMNVEzSl1QUElF8QAeEE+IRxAUkePM7w9ilODWIYFh6PW4Li9k7vueec+bmXte85nPfY+TxWKxsC8W0hLg3AlEREREpAZ4BUPHcOh8o70rkWvgZNn7Pwtnj0K3EeDkDBaLvWsSERERcWxOTmAphZQYaNYKutxk74rkVzKRllAWlDEpKIuIiIjUBIsFMEH...
[ "October 13", "October 12" ]
null
0
science
grade-2
identify-plants-and-animals
true
false
Select the animal.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK8AAADeCAYAAABL7FARAAEAAElEQVR4nOz9V5Rs6VXni/6WXxErvM1In7l35t65/S7vVE6uJCGHBAgZkABh1S1M98G0AQ7NgUN3Q+OhMcI1EvJeKqeyKl/b+/QuIjO8Xd6chzr3nhceGLdezh2D+RTjG2tExMNvzTHNf85PeLkXRYcMSEr8q/2r/b/SBgFcH0HNhawM92ReOxf/Fdx/tf+3W1KCQ8Zrn4fB/3Mu/iu4/2r//2D/H0696P85k/+5B287cYx0XML2PHoDl5HjEtcNxotlIn/EtdV...
1
science
grade-5
animal-adaptations-skins-and-body-coverings
true
true
Fennec foxes live in the Sahara Desert of Africa. The fennec fox is adapted to be camouflaged in a sandy desert. Which animal is also adapted to be camouflaged in a sandy desert?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOy9d7wdRf3//5zZ3VNu7+kJJCGEEJLQOwKChCpIkSqCBUUE5UdHUcAP+gWVDyJVkCJFPiAoKEiACAIBAiSEXkIK6fX2U7bM/P7Ycvace5Nc8AJ+/Ozr8VhyzpbZ2dk5l9e85/V+jdBaa9d1UUqRIEGCBAkSJEiQIEGC/52QUmKaJsJxHJ2Q+wQJEiRIkCBBggQJ/vdDSolMyH2CBAkSJEiQIEGCBP8ZUEohP+9KJEiQIEGCBAkSJEiQYPCQEPwECRIkSJA...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOy9ebglV1X+/1lr76pz7r3dnc4IBAKYMIR5dogQmRQSQZm/EEAMIioiIE/C+AgqKggIMo8KAQH5goCCgAhRZFATScyPeQxzgECG7r73nlO191q/P3bVOefevp2+gQ5Bv/U+z0mfW6dO1a5du072u9+13iXu7iklzIwBAwYMGDBgwIABAwb8z4SqEmNERK7upgwY8L8SOhDnAQMGDBgwYMCAAQP+58PMSCld3c0YMOB/LXQgzgMGDBgwYMCAAQMG/O/...
0
math
grade-4
classify-triangles
false
true
What kind of triangle is this?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACPCAYAAADAx6xjAAAfM0lEQVR4nO3daVxW5d728d/FKCqiOIEDmgly4TyUE4oWIGaCZla7dlru3V1ZmrrLMk3raXgsLcspS83UypSFA85opjndhqHmjAOICYjIICoCAs8LtzzZ6HDBYji+71oL13nQq+Nzfv6cp6WwsLAQERERERGxCTuzA4iIiIiIlCcq2CIiIiIiNqSCLSIiIiJiQyrYIiIiIiI2pIItIiIiImJDKtgiIiIiIjakgi0iIiIiYkMq2CIiIiIiNqSCLSIiIiJiQyrYIiIiIiI...
[ "acute", "right", "obtuse" ]
null
1
science
grade-3
predict-temperature-changes
true
true
Two identical blocks are heated to different temperatures. The blocks are placed so that they touch each other. Heat can flow from one block to another but cannot escape from the blocks. Later, the temperature of each block is measured again. Which pair of temperatures is possible?
"iVBORw0KGgoAAAANSUhEUgAAAQQAAACgCAYAAADq8hJGAAAYYElEQVR4nO3d6XMV953v8Xf32TdJCIFWhCRkwFjsELDBJLHjJbm2sX3HcSWTSWaqMvfh3Cf3D7j/wjy8lapUEmepXNtzTcLYYGPChH1HMiBkYQktaN+Ojs7ep/s+aKmFOEILltRH0vdVRVFqnaV1ft2f7t/39zvdimEYBkIIAah2r4AQIndIIAghLBIIQgiLBIIQwiKBIISwSCAIISwSCEIIiwSCEMIigSCEsEggCCEsEghCCIsEghDCIoEghLBIIAghLE67V2AhJBM...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAiAAAAC4CAYAAADaI1cbAAAjnUlEQVR4nO3d2XMb57km8KcbO0CAFMUN3ERStCTLWqzNUmxJSezYTnxky1Zie5w4yZyqnLk8UzU1t3Nqbmf+gylXpSZxljpj50xka2zZlhWdWPtCiZQliqJMihT3ncQO9DIXTYACCZGgBHY3gOdXlWIEY/mI/vDw7e63PwgAVBARAVBVFSNx4F4YCMiAxHQgohyxCoDXAjzlBqrtgAAWIEQ0bySm4vKc0aMgokK33wdYjR4EEZlHd1j76bcDmz3a3goRUS4EZKA...
0
math
grade-2
match-analog-clocks-and-times
false
true
What time does the clock show?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAEJCAYAAADhBFPCAABRKElEQVR4nO3deVyTZ7o//k/YAigkKKuoCWhF0ErU1rUCVq1trYrdZqYbeM600zOnTnFmOud3zrQDznpmOjPitHNO59h+jV2m006tuLVVa424FasYbAWxCkFRRKAkoJAQlt8fSMqS5clGFj7v14tXQ3I/z3MVyMvruXPd1y3q6enpARERERER+YUATwdARERERESuwwSfiIiIiMiPMMEnIiIiIvIjTPCJiIiIiPwIE3wiIiIiIj8S5OkAyPOMHV0wGjrRYehEh6ELHYZ...
[ "1:30", "9:30" ]
null
0
science
grade-6
identify-ecosystems
true
false
Select the prairie grassland ecosystem. This ecosystem has: long, cold winters and short, cold summers mostly small plants soil that is frozen year-round 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: hot summers and cool winters ...
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAp8AAACtCAYAAAD2xRSHAAEAAElEQVR4nOz9d7Qk+Vnfj78qh87p5jR37p20uzM7u7NJG7VaaRESYEQyKPz0k7Cw+domCNkScKwD5gsCGR8sWYSfQSIIAzYgZFtCgdVK2hwn55mbQ/ftnCvX74+6c3dH2p0RJghQv865p253dVd9qqr79Luez/O8H+G5ZhjujUFCYsCAAQMGDBgwYMCAvxPaPpzvgtDywnAgPAcMGDBgwIABAwb8XdP2QQjDMPxmD2TAgAEDBgwYMGDAtwbyyx8sVrpXrRQE4ar...
2
math
grade-7
front-side-and-top-view
true
true
If you look at this object from the top, what will you see?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAESCAYAAADHSKJKAABJj0lEQVR4nO3de1RUB5o2+kcEBOQawQhIAdJpiO0FL+AMuJbATJxWozDdo5/dkgHbPibkorAmMdPd2GBLT2Yga4GmEy/TBPgiHY50Pm9L5Qw5UDkdiLcgRkQUpUpQMIDIRQq51vlju7eiBFGqatcunt9fAZV6ifnjYeet95mk1+v1ICIiIiIig7CSewAiIiIiIkvCgE1EREREZEAM2EREREREBsSATURERERkQBMuYLe3t2PHjh2YNGkSNm7ciPb2drlHIiIiIiILMmk...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA6AAAAESCAYAAADjWLjmAABWAklEQVR4nO3df1TV953v+6cICsjPgkYgIEhbjTWJv8AZcV2BM/FU04jTGT12tAesvbY0jcF7GjPtaMHqnE41a4F2EmNOETiJrVcmN/64Ue4hF7a3SuKPIEZUlAgIEQyg8kNA+bXvH9u9ExMxKJv9ZePrsVZWCsLebxJdq698Xt/Pe4TZbDYjIiIiIiJ2MWLECKNHEBmyXIweQERERERERB4PCqAiIiIiIiLiEAqgIiIiIiIi4hAKoCIiIiIiIuIQj10AbWpqYuP...
0
math
grade-3
lines-line-segments-and-rays
false
true
What is this?
"iVBORw0KGgoAAAANSUhEUgAAAG4AAABuCAYAAADGWyb7AAAFE0lEQVR4nO2c3WubZRiHrxiXtGiydLN1Kdr0i367lZWOicgsO5mIrGN2fqDSngj+ATvZH7CT/QEeeGBkY7B1g4qIExmteCIrnZ20Xdst7Vo1hXVrQ6s0jYTXgyZxDLsOEZ7nue/3OkoCgR9c5H3e+37vOwHP8zx8nOMZ0wF8/htWi8tkN0xHsBZrxY0vpTlx/kvTMazFWnGZjQ1G5lOcunjedBQrsVbc/OpDAAYnfiE5Nmo4jX1YK25hNVN6PXD1MiNzKXNhLMRacSU...
[ "line", "ray", "line segment" ]
null
0
math
precalculus
determine-one-sided-continuity-using-graphs
false
true
Is f(x) continuous from the left at x= – 6?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB7uElEQVR4nO3deXxU5b0/8M/sM9lDAgmLCSAIggkQDQgSFqGAolawFvXWrdZW69Z7e3uvtf76u+211LbX9qdV622roreLlVvUsgQEWU2EQCCBhC0GCAkwSYZss55lzvn9MSYSIJDAeZhM8nm/Xr4kkznf+eY8c57znWee8xyTrus6iIiIiIjIEOZoJ0BERERE1JewwCYiIiIiMhALbCIiIiIiA7HAJqJONm7ciOHDh2PhwoUAgNtvvx0ffPDBeZ+rKApuvPFGbN++/Uq...
[ "yes", "no" ]
null
1
math
grade-4
compare-fractions-with-like-numerators-or-denominators-using-models
false
true
Which fraction is greater?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAC5CAYAAAAS5EjTAAAIZElEQVR4nO3dS4iP/x7A8c8zRsm4llHKwcpYkI2FW81M0VmgRBaKjQ02stJZuUQ5jp1SsrEiK0yklNvkMmFjORYSR1FTyLXcnv/C0Dnob9Rnfo/5Pa9XzWJ+85TPo6/m3Wd+ninKsiwDAABI0VL1AAAA0EwENgAAJBLYAACQSGADAEAigf0/Ll++HNu2bYu2trZob2+vehxGOOcJAOqp8BSRLz59+hStra3fPp8yZUoMDAxUOBEjmfMEAPVlgz1o1KhR0d/fH5cuXap...
[ "1/3", "1/10" ]
null
0
math
algebra-1
multiply-two-binomials-using-algebra-tiles
true
false
Which area model represents the expression (2x+1)(x+2)?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAQAAAADICAYAAAAHvj8LAAALwUlEQVR4nO3df2zU9R3H8dfdtQV6pT+0SCkwlCK/dAToCBJ1W1QUjD+ymCzBmBiT/WEyf8WYJZptf85tyX65EI2JW5xuZvPHomYTaRyKU1HXAvKb2gpF2lIOS0uvXX/c97s/amvbAV7vvtcv93k/H/+Uu9Lv55N3e6/73qX9viK+7/vtA9KnvdKZlDTkC4CjCiLSzJh0ebE0u0iKtPf7/kfdYW8LwFRbWyoVNPYO35hTJC2JD6cDADedSUmHklLbgHS4V4p2Dw1...
3
science
grade-7
identify-ecosystems
true
false
Select the tropical rain forest ecosystem. This ecosystem has: a small amount of rain or snow dry, thin soil long, cold winters This ecosystem has: a small amount of rain dry, thin soil many different types of organisms This ecosystem has: year-round rain and warm temperatures soil that is poor in nutrients many differ...
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAp8AAACtCAYAAAD2xRSHAAEAAElEQVR4nOz9d7zld33f+75+va6+dq/TNZoZtVFHSAIkYYML2BjMBWMOJjiOg8u1nUvic+JHfJxjYuLEAdsxjn3cuGAIRrYxBgESIAkVVGc0ve3eVi+/Xu8fG+tkXOPcYyuPw3r+sx+//Sv7u/as7+z3+v2+389XeKaf54csKEiMjIyMjIyMjIyM/IMYpnDeBWGQ5PkoeI6MjIyMjIyMjPxDG6Yg5Hmev9INGRkZGRkZGRkZ+dYg/7cbf37awtDGaDcUCuYCaWI...
0
math
pre-k
what-comes-next
true
true
What shape comes next?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAD1CAYAAAAlI4EUAAAW7UlEQVR4nO3dTYwc55kf8Kf6a4ajIWdESWRIyhLWVOKNYdmAdwXmYMmAEUSnLOBDEPiyQILd0+4tzs1GkNhXXxcIYCAHHZRDAAMRgqwWwS5EGfHKDA2YK8uyVtRatIbUiPRwuOR89Gfl0BpyRHPIqZ7p6uq3fz/AMCBxukp/PCz85+23qrI8z/MAAACSUJv0CQAAAIdHwQcAgIQo+AAAkBAFHwAAEqLgAwBAQhR8AABIiIIPAAAJUfABACAhCj4AACREwQcAgIQo+AA...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAz4AAAD1CAYAAACRDCAyAAAZ+ElEQVR4nO3dTYwc55kf8Kf6az405IwokVyKtoW1nHjXsGzAa4E5WDJgBNEpC+gQBL4skGD3sptbnJuNILGvvi4QwEAOOmgPAQTECLJaBLuwbMSWGRmwVl/2Sl6J5gw5JD0cLjkf3dVdlUNrKEriDKd6pqurq38/wAeT010vHz2oqX+9b72V5HmeBwAAUAtJkkx6CJXUmPQAAAAAxk3wAQAAak/wAQAAak/wAQAAak/wAQAAak/wAQAAak/wAQAAak/wAQAAak/...
0
math
grade-8
quadrants-and-axes
false
true
Which point is in Quadrant IV?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH9CAYAAAAgWgsdAAA800lEQVR4nO3dfXSU9YH//c8kQ0IS8gQBQiBEqIAaIvIgz0Ep0kWx+MjPstpq63rW/k5vbI93z/G4Xe+urdzu3R9bRevZdbdHtrfs9paDa0vBpQJCCCINCAQI/ABrAENCEvI0yWRmMg/3HzgpgQAz+r1yzZW8X+f0lLlmcuXTbyfX9ZnvfK8ZVyQSiQgAAACAEUl2BwAAAAD6Ewo2AAAAYBAFGwAAADCIgg0McAsWLNB7773Xffv3v/+9br75ZoXDYftCAQDgYBRsYIC...
[ "U", "S", "T", "R" ]
null
1
math
grade-6
which-figure-is-being-described
true
false
Rob made a 3-dimensional figure out of cardboard. The figure had 2 triangular faces and 3 rectangular faces. Which figure could Rob have made?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAANgAAABSCAYAAAA2CxpTAAAS0klEQVR4nO3deVQUV77A8W8jILI1GkTjBgg4xvEFUMQtCmiiEjUR3KIvAuOWRRLRMQ4mMYCZKKOyqCTELYDOiwsYUJlEJypNonPGqGPrmKiIoU00ojjaoKyC9f7oULHdwtJlG+d+zumjVdy69TtF/7i3bt2qUkmSJBXXQGEFXK+DWglBEJrIUgUOLcDLFtpZg6q4WpK+KTN3WILw+OnrCJZnKgwLT1rD7+wM2ScIQtNcr4PT5XCxBgoqwKKs1vADkVyC0HwOLQy...
3
science
grade-5
animal-adaptations-beaks-mouths-and-necks
true
true
California condors are scavengers. They find and eat the bodies of dead animals. The shape of the California condor's beak is adapted to tear through meat. Which bird's beak is also adapted to tear through meat?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOydd5gcxbX2f1U9adNsXq1WOQdACJGjwYABEQw2JtpgjDHhyhgw0QHbgDEGLhhjsvEVGJywiQYuImcsEEIoAMphc96dmd0J3VXfHx1mZnclrYQAf779Ps8+O6G761R1mLdOveccobXWpmmilMKHDx8+fPjw4cOHDx//f0JKSSAQQGQyGe2Tex8+fPjw4cOHDx8+/v+HlBLpk3sfPnz48OHDhw8fPv4zoJRCftFG+PDhw4cPHz58+PDhY8fBJ/g+fPjw4cO...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOydd7wcVd3/3+fMbLs9vReSkITei4BILxEQFJCiICqiPBGBh46ACCICD4gICIjSLfiAqMBDpIjSDIQIoRNKenKT2+/WmTnn98eZmZ2d3ZvchCDqbz+v177u7pTT5sy55/OtQmutXddFKUUdddRRRx111FFHHXXU8e8JKSW2bSOE+KSbUkcd/5GQdeJcRx111FFHHXXUUUcd//5QSuG67ifdjDrq+I+FrBPnOuqoo4466qijjjrq+M9AfW9fRx0fH+Q...
0
science
grade-6
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?
"iVBORw0KGgoAAAANSUhEUgAAAbAAAAEVCAYAAACBn7B3AABmbUlEQVR4nO29d5wb9Z3///zMqEvbF/fCutJsU2LT+xEImBDKLwXCBfIl5LgkhHAJKaSSI41LIOQu5EgDQkmCCXAJxkCoCRAHA7YBG/fecNmuPvP5/TFFo13tWrsr2Svt5/l4gKXRaD6j2XnNu32KkFJKFAqFQqGoMLSDfQIKhUKhUAwGZcAUCoVCUZEoA6ZQKBSKikQZMIVCoVBUJMqAKRQKhaIiUQZMoVAoFBWJMmAKhUKhqEiUAVMoFApFRaIMmEKhUCgqEmXAFAq...
[ "Solution A", "Solution B", "neither; their concentrations are the same" ]
null
0
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?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACgCAYAAAA2PRuAAAASKklEQVR4nO3db2wcdX7H8c+u7XVyrCOLtXDqENhUbROsszE5+x7EvipYFTg5nTZXXQwoQeLuWp4gndLqdE+IdGnLk0MngS5BqlS4puWklgRKXEpw+eNEwouic2iMXYyTouwCsatI62B5QujOOt4+cH7LOrEdrz2zM7v7fj1aj70z34Unn4w+891ANpvNCgAAAIAjgl4PAAAAAJQTAjYAAADgIAI2AAAA4CACNgAAAOAgAjYAAADgIAI2AAAA4CAC9hpYliXLsrweAwA...
[ "equal to a right angle", "less than a right angle", "greater than a right angle" ]
null
1
math
pre-k
tall-and-short
true
false
Which bell tower is shorter?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAGgAAAESCAYAAAAR0pCyAAAKMElEQVR4nO3df3DTZwHH8U9aUtpAW2w5N6AByibcBsgpuInyx44bTvEAvZOJE5w4/MGpO8ep7K7Tdd5xjnIMrT8IXEWGDLDdbUsrPRTZVaT2gFbc+FGQtbM/KbZI04yOlrbxj5DY0l9pzTffz1M+r3/aJN80T/vek+fLk7RzBAKBQFMn8E474O8GugIQG41zAMnxwIdcwD0JgKOpIxA41Wb3sGQgD6cA4y63By9MSQDmTAjWE/v4u4FLN4ArncA/24G4tq7gDYr...
1
math
grade-2
which-picture-shows-more-up-to-5-dollars
true
false
Which is more?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAlYAAAEvCAYAAACHYI+LAAEAAElEQVR4nOz9PWwky7bvif3ezMMgUsIIEcAAyvQ6DEFIelkyBNazuo5XB+OQzyKPtet4bK/pNY912ZZIb9M73NYhrSGNGezybrU1VYAAVXqd0AcU21ImMANEYEaaDI3m4cpYkVlF7u599nl333ffbdQCuiuZGRkRGZ8r1vqvtf7VP/zDP/xD9z/D/+N/gv/x38H/8g8c6EAHOtCBDnSgAx3oV9C//lfwn/+n8L/7X8H/9j+Df9X9f//hH/7P/8M/d7UOdKADHeh...
1
math
grade-3
interpret-line-graphs
false
true
An investor tracked the daily price of his favorite stock. On which day was the stock price $3?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAGUCAYAAAAPoVWPAACI5klEQVR4nOzdeVjU573//+cMMMDAsCMoCoggiOCCguKKa0yMcU9wSU8ST5v0JKXbqe2vp+ekaVqb802a1rY2tT1JUxNNo1Gi0USjEhfQuCDIKggqCLLvwzLDLL8/LJMQl8QUmYF5P64r1xVmPjPzmo/D8J577vt9K8xmsxkhhBBCCCFEn1BaO4AQQgghhBCDiaO1AwhhixoaGti/fz+XLl2ipaUFhUKBr68vEyZMYMmSJTg5OfVLjjfffJPTp08zd+5cHnvssX55zFO...
[ "Friday", "Wednesday", "Thursday", "Sunday" ]
null
2
math
kindergarten
subtraction-sentences-up-to-10-which-model-matches
true
false
Which picture shows 9 − 5 = 4?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAagAAABKCAYAAADuScD9AAASo0lEQVR4nO3d2W9c53nH8e/7nmXOLNxJiZasxbZkid4lWxSEpLWTGja8KHZsNy2ipDCK3BRoetGLXgS9aS+aP6BAgV6kNmAoLRo7i+3aTWo3SetWDmVR1hpriVZakiWuM8NZzvb24pCUKFEkRXHIIft8bqhz5pwz72+gZ56Zs40yxphLPpwsQSGC0CCEEEIsOFtBgwUbM7DSBXWpakxPfrGHJYQQQly1vRHsE6Vk4g4XNmWT7iWEEEIstEIEx0bhog/HS6DzYfK...
1
math
grade-8
identify-linear-and-nonlinear-functions-tables
false
true
The table shows a function. Is the function linear or nonlinear?
"iVBORw0KGgoAAAANSUhEUgAAAFQAAABeCAYAAAC98DOnAAAHT0lEQVR4nO2cf0hTaxjHv9PasBpC5WrO/NHshyCjST8xgkiW3IL+sLvlSBFES4UgKikkC0sYLnDTciL4R5AZXhYUVHiJsP6QaZSy8FeKYaRB0wi3Q9bczv3jkrCrlef4nHnF9wP+4ftuz/Pw4Zz3ON9nL1oetfJLgaVSZwQYpDChxDChxDChxDChxDChxDChxKyQIujAwAAyMzN/Ot/Z2YmYmBgpUgtmamoKtbW1ePjwITweD2JjY2E0GlFQUIDIyEjB8SQRumnTJjQ...
[ "linear", "nonlinear" ]
null
1
math
grade-8
identify-alternate-interior-and-alternate-exterior-angles
false
true
\line{FH} and \line{IK} are parallel lines. Which angles are alternate interior angles?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADSCAYAAABw17dKAAAbkElEQVR4nO3df2xV9f3H8de5pRTW1bZjTtsxaNdWqy30Ximwurnb61xU4uQSl6DOrReXbAGc3pXFuZXFmtQlLoHUOWmWZfQ2wTg3XK8sUzrRFpcNLb3txVrFqfRimIU4vS0bk5vS9vsH33ZCW0DuuffcH89HchPtkc/npebGFx/POW9jYmJiQgAAAABMYbM6AAAAAJBKKNgAAACAiSjYAAAAgIko2AAAAICJLC3YPp9PbW1tMd/n0KFDMgxj1s/9998f8wwAAABID3O...
[ "\\angle{KJG} and \\angle{HGJ}", "\\angle{KJG} and \\angle{FGE}", "\\angle{KJG} and \\angle{HGE}", "\\angle{KJG} and \\angle{FGJ}" ]
null
3
math
grade-4
interpret-bar-graphs
true
true
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAC9CAYAAACJdQrFAABXbklEQVR4nO3dd1gU19fA8e8WqmIDrIiCWBB7b7Gh0YiViIm/GGOMvUaT+FpjYosxIdEk1thi7F2jGFuMHWzRGLGDDQsKForssuX9Y2R1BQV0FdHzeR4e3Tt37ty5DHDm7pm7KvMsdzNCCCGeTfforO6BEEKIV4w6qzsghBBCCCHE60QCbCGEEEIIIWxIAmwhhBBCCCFsSAJsIYQQQgghbEgCbCGEEEIIIWxIAmwhhBBCCCFsSAJsIYQQQgghbEgCbCGEEEIIIWxIAmw...
null
[ "iVBORw0KGgoAAAANSUhEUgAABSMAAAHDCAYAAADfvQ8tAAD2W0lEQVR4nOzdd3hUVf7H8ffUhDRaQicUA4HQO6GGKhpBimAQCyyiohgsK6tY8CeKnZVdWMW1IKsoIIkgTaU3QZFiIPTeAwkEkkAmmZnfH2MGhoAkGDIJfF7Pk4fMveee+z1nLjD55hQD4ERERERERAqE0+nkuA12Z8A5O2Tr07aIiIjcwswGCDRBLT8obwUDSkaKiIiIiBSY45lOfjnr7ShEREREip5WQWD2dhAiIiIiIjeTXRmuPytaIdzfNRJARERE5FZ1zg4...
1
math
grade-8
model-and-solve-equations-using-algebra-tiles
true
false
Which set of algebra tiles represents the equation 5x–5= – 10?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAWYAAAB6CAYAAACMRflCAAAMo0lEQVR4nO3db2wT9wHG8cdnx06xY8wcQtLEYaGCjrQdgQ3cZCotFOj+qJqmsBetSvemmniT7kXhRTcqRKYuUihS3/CiUte+mioqHKRW3TRQKgJTLMoUSteQsQCz45bYFw+iYDs4yd3tRWjWDJASuN/d747n84Y6JPd1IuXh7Fxqj2EYRnYKuFQCbmjAjAEiIrKQzwNUeYHVS4AVfsCTLRvGZxN23y0iIgKAeBjwDZdmb9T5gUeDs6tNRETWuaEBF4vA6BTwrxK...
1
math
pre-k
subtraction-sentences-up-to-5-which-model-matches
true
false
Which picture shows 4 − 2 = 2?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAABKCAYAAACiqlhpAAAOYElEQVR4nO2de3Bc1X3HP/e5V++XLUv4ET8ijBHGDxI7hoRQmoKBuqGFhBozLZ1pOoVh2s5kEmYgM53ptEOaZsr0jzbpYxJ3Wlx3GpohxjgtlEfAKBG2ARvbsmVL+CnJ1msl7d7d+zr9Y72SvF5JK3m1a12dzz+ae/fe8ztfze97z93zWkUIIbodOBWHYR88gUQimSV0BSo0aCqFRSYo3UkhWoeKXS2JZP6xuRL09njqoNGE1WUpd0okktlh2IcTMehy4GQc1CE...
0
math
algebra-1
domain-and-range-of-absolute-value-functions-graphs
false
true
What is the domain of this function?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABltElEQVR4nO3dfXyU9Z3v//dkJvcJJCSQYDBBQFAwQVFQEBQLVautFayL7fbGrrtdu23tdn+P3UfP/trubh+up+fstvurx/b0eE5P1fPo79etW29WMFAQFAxKJEKAoIgBQgLkZsjd3F9zc/3+oJMlApIJ15fJJK/n48FDZzLXO59c18w1n7nmM9e4bNu2BQAAAMARWekuAAAAABhPaLABAAAAB9FgAwAAAA6iwQYwTFVVlXbu3Dl0+ejRo5o6dara2trSWBUAAJmDBhv...
[ "all real numbers", "$\\{x \\mid x \\geq 3\\}$", "$\\{x \\mid x>18\\}$", "$\\{x \\mid x \\geq 18\\}$" ]
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?
"iVBORw0KGgoAAAANSUhEUgAAAXQAAAA/CAYAAADwizNIAABj9klEQVR4nO29d5Rc13Xl/XuxcuycczcaOedEEiQVSJGiJAZRWfLIlm1Jlj1jj+UZ2bQ9yzP+PB5nLytLtgIlSswZBJFzanQDDaBzTlXVlate/P6oRom0aAmgSMkksNfiAoiu6nq73nnn3nvCPoJt2zY3cAM3cAM38JaH+Ku+gBu4gRu4gRt4Y3DDod/ADdzADbxNcMOh38AN3MANvE1ww6HfwA3cwA28TSD/qi/gBt760HNZ0uk0+XyObDqNoeXJRKfRTBtZlnH4Q7j...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAlUAAACiCAYAAABoDjg6AADwIElEQVR4nOz9d3hc93mnjd+nTq8Y9N4JsIC9SRTVJduSLctyd+yUTZweJ5u2SfZN4t1f3r3e3fTsbuLe4iJ3yVYhJVGFotgLCJIACaL3MoPpc/rvj4HoOHFiSiYlyjo3L12ASGDmfM75zpxnvs/zfB4BcHBxcXFxecPjOA5zOgwXIGuB6b67u7hcV2QBQhJ0+qFaBQE3qHJxcXH5qWBOcziaeb2PwsXlzcmOMMiv90G4uLi4uFwbLhXKX2tV6A6UP0G7uLhcP7I...
2
math
grade-8
quadrants-and-axes
false
true
Which quadrant is the point R in?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH9CAYAAAAgWgsdAAA8vUlEQVR4nO3dfXxU9YH3/e9MhoQk5AkCBDBErIAaA/Igz6FSpIti8ZHLslpla93i69UL28vtfXvbrrvrKi/33outUuvuutuV7aVbb1lYWwougggxiBgQCBAoUAlgSAghz5nMTGbm3H/gpAkkYaK/yZlDPu9/ZM5MTr79dXLOd37zmzMuy7IsAQAAADDCbXcAAAAA4GpCwQYAAAAMomADAAAABlGwgX5u7ty5euedd9pv//a3v9WNN96ocDhsXygAAByMgg30cxMmTND...
[ "Quadrant I", "Quadrant II", "Quadrant III", "Quadrant IV" ]
null
0
science
grade-7
compare-concentrations-of-solutions
false
true
The diagram below is a model of two solutions. Each yellow ball represents one particle of solute. Which solution has a higher concentration of yellow particles?
"iVBORw0KGgoAAAANSUhEUgAAAbAAAAEVCAYAAACBn7B3AABk5ElEQVR4nO29eXxcVf3//7x39i0zWZquaRugLXQD5MPWllURughlkc0fCn4U5KMgIha/FhfAouwIKouo2I9IlarwUWoB2ZRVWWpXlpY23ZM0zUwymX3u/f1x5965k0ySSTLTZibn+XjkkZk7c+859+a+8l7O+54jqaqqIhAIBAJBmSEf7A4IBAKBQDAYhAETCAQCQVkiDJhAIBAIyhJhwAQCgUBQlggDJhAIBIKyRBgwgUAgEJQlwoAJBAKBoCwRBkwgEAgEZYkwYAK...
[ "neither; their concentrations are the same", "Solution A", "Solution B" ]
null
1
math
grade-8
multiply-polynomials-using-algebra-tiles
false
true
Which multiplication expression does this area model represent?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADLCAYAAABUDuQZAAAPZ0lEQVR4nO3dXWzdd33H8c85dhLXbtykjanjZG1JSp+AiMbroCodCAhLUQVCaBMgJFRpF0g8qkK7iIDLapu0wZgqqkoV4nFAgamTtmaNSqBdodDFbWibPoSkiSG2m6RNnAc3cXzO2UVGWrdhU9qf+fucvF53/lnR95t/bt766X9Oaq1WqxUAAKCIetULAABAJxHYAABQUPfpDkdGpzNxqPnH3qXtDfbXs/aihaf93ci+TRmf2ll85vLeVVk7sG7ezAQAONvVXv4O9i0...
[ "(2x+2)(2x+1)", "(x+2)(2x+2)", "(2x+2)(2x+2)", "(x+2)(2x+1)" ]
null
3
math
algebra-1
interpret-a-scatter-plot
false
true
Does this scatter plot show a positive trend, a negative trend, or no trend?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAFhCAYAAABK/t0lAAAq7klEQVR4nO3dfXSU5Z3/8U8QkQyJSYkQkhAcCCasZ3JISNqN4RySSI/4wLCx/fVQ3J4u7EIFz65C7baCZzGtYNMeWfAJoboVLYp0sz4Ax+La6IAiwTIwnKSVUDcZCGACREbyxENgfn8gUwNMSODK3DOT9+sv5r7G+X4v0ZNPrrnu647x+/1+AQAAADBigNUNAAAAANGEgA0AAAAYRMAGAAAADCJgAwAAAAYRsAEAAACDCNgAAACAQQRsAAAAwKCwCtgnT57UyZMnrW4...
[ "positive trend", "no trend", "negative trend" ]
null
1
math
kindergarten
addition-sentences-up-to-10-which-model-matches
true
false
Which shows 3+4=7?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAUQAAABKCAYAAADDly0CAAAMw0lEQVR4nO2dTWwc133Af28+9nu5lqgPWqQjUbLVMLUbVP1QcqpT0PYhyCWFgRySS9Be3CJAT73l0EMQtKe2aIG2xxyCXOOigFMHQtNT0zYBnNhuIsWUIksVRZM2uV8zuzPzephdfmm13FnOm1lK/x+woMiZee/9CL0/37xPpbXWD3pwqwPNEAKNIAjCU4GjoG7DCxU4XwD1wNf6xzt5F0sQBCFfrs+Bc7MTf/NsAX6jGkdLQRCEp4FmCL9ow//14JcdsHaC+II...
1
math
algebra-2
describe-linear-and-exponential-growth-and-decay
false
true
How does g(t) change over the interval from t=1 to t=3?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABxKklEQVR4nO3de3hT550v+q8syVfZ2PgiGxNDwJfEYHOLIdwCBELSJM0EEm5pm2aetGen09v07DOz+/R0d0/7ZLL77E7b00yS3XZPm8vebRKckswEYggXB4gdcHDAYEPANmBjbMmWLdu6L0lrnT+MXDsYkOz1siT7+/knsaz19Y+1pKWfXr16l05RFAVERERERKSKOK0LICIiIiKaTNhgExERERGpiA02EREREZGK2GATUdiOHTuGe++9F36/HwDw5ptv4vz585g/fz7...
[ "g(t) increases by 400%", "g(t) increases by 6", "g(t) increases by 600%", "g(t) increases by 3" ]
null
1
science
grade-4
identify-mammals-birds-fish-reptiles-and-amphibians
true
true
Amphibians have moist skin and begin their lives in water. Amphibians are cold-blooded. The body temperature of cold-blooded animals depends on their environment. An American bullfrog is an example of an amphibian. Select the amphibian below.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOz9d/wtV13o/79Wmbrrp55eknNy0kmBSAgECE1QiCCEErEF0SsqEowGLHghXOQaQEUDUlQQUDGIQLgXKaKUhCQQQhJK6klOP+dTd52+1vr98SHn5qQHPijf/Ob5eOSRsz979uw1M2tmv2fNe60lnHOuqiqstdRqtVqtVqvVarX/b5JSorVGlGXp6uC+VqvVarVarVb7/z4pJbIO7mu1Wq1Wq9VqtUcHay3yv7sQtVqtVqvVarVabfXUAX6tVqvVarVarfY...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA6cAAADMCAYAAACPx9V0AAEAAElEQVR4nOz9edxlV13g+3/WtKczPmMNqapUkspIAmEI8zwosSWOQUEElZb7g+tLwcYf0oi3Edtur4AvUbBBGy8iKOoPGbS1kYsICRAgQIBAQuaaq57xTHta0++PB6oJJBAk2jZ93v+kznP22Wftvdc62d+9vmstEWOMzjlCCMzNzc3Nzc3Nzc3N/a9JSonWmk+N4cIO9NT/7BLNzd2ziYebZ3CihQUNjx3u/F3OA9O5ubm5ubm5ubm5//WFEHDOzQPTuX/1emr...
3
math
calculus
domain-and-range
false
true
What is the range of this function?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABlt0lEQVR4nO3dfXxU9Z33//dkZnKfkJBAEoIBEaUFCYiiglB1sWpra4utF/berrW1W6t1t92fu1fb3e3l2l67bd1atV1bt2qvPh696lW1KzZSVBQKVSRKIOANRggJITeTTJK5P3Nzfn/QpASCTOB8M5nk9Xw8fPiYIfOeT86ZOfOekzNnXLZt2wIAAADgiJxMDwAAAABMJhRsAAAAwEEUbAAAAMBBFGwAI9TW1mrbtm3Dl/fv368ZM2aotbU1g1MBAJA9KNgARqivr1d...
[ "$\\{y \\mid y \\geq 0\\}$", "$\\{y \\mid y>0\\}$", "$\\{y \\mid y \\leq 1\\}$", "all real numbers" ]
null
0
math
grade-1
ordinal-numbers
false
true
The first picture is a train. Which picture is tenth? first
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAnzUlEQVR4nO3dfVhUdd4/8PeBIRkYGQwWaQXExEATAVsfEmzt2rRMS7et1XRbn9rfrmitrStqdSfsbYkPlW2I3r+fj923aVptmZQP7WY/xbRMEFRwHbYBNFHRZWQYUGbm3H8cZpgZ5uHMmTOP5/O6Lq8rmDPnHL59zvfzPed8HxiWZVkQQgghhBBCRBHm7xMghBBCCCEklFADmxBCCCGEEBF5rYHd0sliwMFbyPlHK1o6qRcKIYQQQgiRBkEN7E+udKKotsNpw/lIsx5...
[ "train", "bear", "plane" ]
null
1
math
grade-2
place-value-up-to-hundreds
false
true
What is the value of the underlined digit?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAAiCAYAAABlRa5TAAAGEUlEQVR4nO3dXUjTawDH8d/WWtZ6W2YvRBBETqmYBBkaXlSUYSURRUQvA4kKvIggtItaQVd20xtkUReDravqLrBsEV70QmHQtFpeGHahjRwzK61N3bnw+D/7O8+xU7M8h+8HBv/n2fOy5+7Hw57nb0kmk0kBAAAAyAjr7/4BAAAAwP8JARsAAADIIAI2AAAAkEEEbAAAACCDCNgAAABABhGwAQAAgAwiYAMAAAAZRMAGAAAAMsgqSf39/bJYLKN+Tpw4MeIg3759U01...
[ "5", "500", "50" ]
null
1
math
kindergarten
fewer-and-more-compare-by-counting
true
false
Which group has fewer?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAJy0lEQVR4nO3dP2xTWRqG8Tf8C5pNNilGGzYUVGunCg2jdBBShCpQpqFECMoUoYOGDoplKtCUCArSJalIYRa6DDSkipltUoTNaKZIMINiFuQtDh6BBEtsfP1+1/f5SWhgYO755DNPHF/se/sajUZj66307zdS7b30riEAGTnQJw3ul/7xnTRySOrbqjcaP79yjwUUz8RfpQO/vEm/+PshqfyXVCeAbNTeS9U/pP+8lV68kfa9epd+g/iA7A3uT61J0uv30r73H/0...
0
math
pre-k
fewer-and-more-compare-by-matching
true
false
Which group has fewer?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAHIAAACGCAYAAAAB3t5yAAAhRklEQVR4nO2deZgjZ32g36pSSaUqqXW2+r57+pjumfF4PGNsYxsbiAPGBicQjrAcm8Bm8ywEdp/N8ezuk8294cmu2Y39hDjghMNgsA3EYMbmMB4bxsNcnqN7erqn7/uSWrdUUh37h3raNj4wCYy6Fb3/qbtUqvre5/vqu36/EmzbtpcLMJ6FlAmGTZUdgEMArwS7VKhzgrCs2/bxZLkvq8q/hmtrwHEpW/rQ4IRerWS5yvYnZcJoBpYKMJYFMWmU/lGVuLPwSiV...
0
math
grade-7
make-predictions-with-scatter-plots
false
true
Based on the scatter plot below, which is a better prediction for x when y = 33?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAFhCAYAAABK/t0lAAAhyUlEQVR4nO3dbZCW5X03/i/PCyiuRFeyLGjGBYlGgWwzSgDbZaI1soTaxseQ+IBGNGaik6aDGevQZiYkrTXFUUnEVG3//9TEJMSAtcHx4Y6aJWnWomirLDEoCyhoZA2yu7q694uUvYuyKnruXsvF5/OK8zwur9/vYEav7xwe53EO6Orq6goAAFCIgaVuAAAAyomADQAABRKwAQCgQAI2AAAUSMAGAIACCdgAAFAgARsAAArUrwJ2e3t72tvbS90GAAC8Z/0qYK9ZsyZ...
[ "90", "52" ]
null
0
science
grade-3
read-a-thermometer
false
true
Select the temperature shown by this thermometer.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAGQCAYAAADbbRRJAADCdklEQVR4nOydeXgT57X/v1pGsiRblhcZ8AI2YBswBEMIxoaEgJOQBdIlqUnubRuatr9c0jWhbdrcdE1vetOG7k2aZiNtc9uQrY3JjiEhCVsIGLBNLAO2sWxA8iIvkmyNlt8f8gySNSNvM7Itn8/z8IDfGc/7Csuj75z3e85RBAKBAAiCIAiCIAiCiAuUE70AgiAIgiAIgiCkgwQ+QRAEQRAEQcQRJPAJgiAIgiAIIo4ggU8QBEEQBEEQcQQJfIIgCIIgCIKII0jgEwR...
[ "70°F", "35°F", "45°F" ]
null
2
math
grade-3
coordinate-planes-as-maps
false
true
What is at (7, 5)?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAE7CAYAAADn6/a0AABlZ0lEQVR4nO3dd5xU9b3/8dc5Z9r2Xdilg3TpVYooSFEUG0mwRvOzR6xRo4mJ5iY3uTdRE71qoibq1WtiiS222FBRQMXCCgKCgtJhadt3dqec8vtjYGTdXdyF2cL6fj4ek+zMnHO+nzkus+/5zvd8v4bneR4iIiIiIpISZmsXICIiIiLSnihgi4iIiIikkAK2iIiIiEgK+fb+cO+997Jo0aJaT3bt2pU77rijxYsSERERETlUGQ1d5PjPf/4Ty7I4/fTTW7omEREREZF...
[ "library", "hardware store", "bicycle shop", "car dealership" ]
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
[ "iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAYnklEQVR4nO3de5xcZZ3n8c9zzqnqqr6lO7fuJJCEkBsBBAEJiDOE26zowjjCS1HXGWV3bjvLy3V2UWYcB0eFGQFddXT29dqXyr6MoKAOi1x1gAFHyJgASSDknpBrX9LppG/VdT3n2T9O9TWdpEmqT1V3vu9/kq7urj5Vzznf85zf8zx1jLXWtuVgZz/0+lCwiIiUhGegzoUl1dAUB9OWtXZtT7k3S0SmupX14O3oD7+YE4dlNWEaiYiUQq8P21LQmoPt/eD0FMJ...
2
science
grade-2
identify-mammals-birds-fish-reptiles-and-amphibians
true
true
Reptiles have scaly, waterproof skin. Most reptiles live on land. A box turtle is an example of a reptile. Select the reptile below.
"iVBORw0KGgoAAAANSUhEUgAAAtMAAADMCAYAAACx6y9WAAEAAElEQVR4nOz9d7weZZ34/7+m3DN3r+c+veXklPSEFEINhN6lCoKKsIuu6KogiuKy6sKKK81VxEWwoKIgShNhCRAJoYT0kJ6TnJPT2937PfX3B1/Oj0CAJEbdz+79fDzO43Hu+55yzXW/57rfc801M4Jt27ZhGFiWRUVFRUVFRUVFRUXFhxNFEVmWEXRdtyuJdEVFRUVFRUVFRcXBEUURsZJIV1RUVFRUVFRUVBw8y7IQ/96FqKioqKioqKioqPh/VSWZrqioqKioqKi...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA4IAAADMCAYAAAAmsx3gAAEAAElEQVR4nOy9ebhlVX3n/VnDHs5856luzfNAMc+IgESE4IBCUEm09W3TiW3HmDaasU3aJKZj1HSidtTEaCJGk444JbaoKCAyU8xQ1DzfuvOZzx7WWu8f+9aVAoTClCb9vufzPPXAGfbe6+yzzr77u37DVzjnXJqmWGvp0qVLly5dunTp0qXLCyOlRGvNfTVYX4CS+rceUZcuz03dwPYmHImhV8NFPdnzsisCu3Tp0qVLly5dunR5cVhrSdO0KwK7/LunpLLFCoC...
1
math
grade-8
changes-in-mean-median-mode-and-range
false
true
Look at this set of 10 numbers: How would the mode change if the number 9 were added to the set?
"iVBORw0KGgoAAAANSUhEUgAAAS8AAAAkCAYAAADYbryvAAAHT0lEQVR4nO3da2xT5x3H8a8viR2InZALEBwIIRccLinXNBQKpaVQSrqFVeuohiZNq6ZKRUIVq8SkadPedW/GJnWrNFF1XbuW2xCjhS4llASyhQJpRoAQSMgFcoMQ4tzs2LF99sKQEUBa253jp47+n5ePlOd39H/sv4+fc3xi0jRNAwgGYWQEwmFAQwghvj1MYDaD3Q5W690hTdM0/wj4/WqPTQghvgqbDWx2sIaC0riEELHD7weLFczSuIQQsSbgB3MopPowhBDi6wm...
[ "decrease", "no change", "increase" ]
null
1
math
grade-2
interpret-bar-graphs-ii
false
true
Rose went outside to play and found four friends, each of whom had brought a ball to play with. She made a bar graph showing the different balls they had to play with: Which ball did more people bring, soccer balls or golf balls?
"iVBORw0KGgoAAAANSUhEUgAAAf4AAAFfCAYAAACvL65uAACeC0lEQVR4nOzdd5hV5bX48e+up8+ZjjQBQUVURFExBhWwa2zRxJqruSa2FOPNTUxucpOb9ku/llw1liixxRgTNaKJjSBGkSQoiKKCIn2AqWfOnLbr7489ezOjgIyUGZn1eZ55xjlzyjuHcdZ+17ve9Sq+7/sIIYQQYlBQ+3sAQgghhNh1JPALIYQQg4gEfiGEEGIQkcAvhBBCDCIS+IUQQohBRAK/EEIIMYhI4BdCCCEGEQn8QgghxCAigV8IIYQYRCTwCyGEEIOIBH4...
[ " golf balls", " soccer balls" ]
null
1
math
algebra-1
special-right-triangles
false
true
Find y.
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACYCAYAAADeFJ5AAAASYklEQVR4nO3df2zUdZ7H8ddMO53+oDJusOChZnHv3CyRo2wCV+IthT9kNbGLf7BLieDxQ3PBOw4OOOnVaNiLVxvdxVu8pCw9LInVLJZesmYrdN1kC+fP6BEKiJg7y3IUU0WgpZ3O7/neH9PW6bSF+dmZ73yfj2TSfKftfD/lrxfvfL6fl80wDEMAAAAA0sKe7QUAAAAA+YSADQAAAKQRARsAAABIIwI2AAAAkEYEbAAAACCNCNgAAABAGhGwAQAAgDQiYAMAAABplJa...
[ "5", "10", "$\\sqrt{10}$", "$5 \\sqrt{2}$" ]
null
3
math
grade-1
two-dimensional-and-three-dimensional-shapes
true
false
Which shape is three-dimensional?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAALcUlEQVR4nO3dX2zVZx3H8c8ppTQtfwIBgWqZ6wYdWIb8GdAECDLZDBPHXEAzM/HG6JW3mriLXUyjV8YLL4yJ0SwSN6KCONiGKAILo7IyoIN1ZWWCMsgIZC1t2nLanxfPjiD0z+nhnPP9Pc/zfl0NGtovtJ895/d7zvP5ZZIkSS4PSOd6pe5BKZsIQIlUZqQpE6T5NdLsKilzuT9JWrqsxwLis2qqVNnR634xt0pqrHXpBFAa3YNSe4/04YD0Xq9U0ZV1HyB8QOl...
1
math
grade-6
classify-triangles
false
true
Is this triangle isosceles?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABRCAYAAADo89E8AAAQSElEQVR4nO3dfVBU937H8Q8LhPAM8rTg9RpxqAaTqgkIiLAxRlOTmIfexIljR83kdoY6ZTT15v7R3tpm0kx6701tzFzHMRkdk4xgMolOU3VsumrwobVeJcGkhgeDThoBI7uwiCIIbP9ANruyysLusiz7fv0j7J5z+J4Z//jMmd/5fcLsdrtdAAAAAHzCEOgBAAAAgIkkwtsLNDU1afbs2UpOTlZRUZFKS0tVXFysmTNn+mI+AAAAIKiEebtE5LPPPtMzzzwz5POsrCy...
[ "yes", "no" ]
null
0
math
pre-k
select-solid-shapes
true
false
Which shape is a sphere?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAS+klEQVR4nO2dWW8bWXqG39q4SaSojZKthVop2d2ZSQOddGcCeIBxgEmAJECukotggAGCIDf5TbkKggBBLjoOOj292JZsS5ZleZEX7ZZsSbbU2riJS7FYuTg8EmlS1kaytu+5M0WaheLLj6dOfec5gq7r+ocssHQIxDUgp4MgTIcsAH4JGPYBHS5A+JDR9amY0YdFEGfnqwAgLx6yf1xxASMNLNUEYTbiGjCfBN5ngYVDQIzl2B8otISZ8UssowCQ0ABRK/oDQZg...
1
math
grade-7
identify-reflections-rotations-and-translations
false
true
Look at this shape: Which image shows a translation?
"iVBORw0KGgoAAAANSUhEUgAABbAAAAC3CAYAAADD5XikAAARwklEQVR4nO3dXaxcZd0+4LtlQ60VgqYWZpnigSbg2xaRMXgg+AGINOqBia3ogSWv4UTEGs0bP3ogHpB/Go8I0RjzD0ZjJA2hFWv4EGJIINamrPq5iU1QFMyaIEqIoGBo934PSIeWtnltWWvmWbOvK2lYszu51y8Pzx7au4uny5IsBgAAaMXiol9eAwBAW5ZPewAAAAAAADgeBTYAAAAAAEVSYAMAAAAAUCQFNgAAAAAARVJgAwAAAABQJAU2AAAAAABFUmADAAAAAFA...
[ "A", "C", "B" ]
null
2
math
precalculus
find-limits-at-vertical-asymptotes-using-graphs
false
true
The graph shows f(x). The dashed lines are vertical asymptotes.
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AACMdUlEQVR4nO3de3zT9b0/8FeaS+9teoG2FNtylwKlFEGqIDiYMlAGbF525ibu8tt25tSdbUfn9nNzY+6+qXP+3DnHCTvuHKdTUYFyUe5FBAottBRtCy290Evapk3SJN8k3+/vj5KU0AtJ+/32m6av5+PhQ5J8886bkHzzziefz+etkSRJAhERERERySJC7QSIiIiIiMIJC2wiIiIiIhmxwCYiIiIikhELbKJxZN++fcjJycHatWvVToWIiChsabjIkWj8WLVqFb70pS/...
[ "$\\lim _{x \\rightarrow-T^{-}} f(x)=-\\infty$", "$\\lim _{x \\rightarrow-7^{-}} f(x)=\\infty$" ]
null
1
math
grade-3
choose-the-appropriate-measuring-tool
true
false
Which tool would you use to find out how cold a glass of ice water is?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJYAAACnCAYAAADzJ6XqAAAV5klEQVR4nO2de1hTR97Hv+ESLgkaEAgoCAFEARW8QhdfW7sWRaxW6trqy7a2FttVu9Rut1pF3NpaVm2ruNZedK3Yd4Wtt622q+kqVCutWq2hsrXVBFBrBUS5mACBkHn/iKRGIiQhc05I5/M8eeCcmTnzm5NvZub8Zs6MgBBCqloBZRNwqx3QETAYVuMmAHxcgUHegFQICKq0hJxq5NsshjOR2Adwu9hkOAgWAoNFBtUxGNZyqx34UQNcawUuNAEujTpDABMVoyf...
1
math
pre-k
triangles
true
false
Which shape is a triangle?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAI0AAACVCAYAAABl23lTAAACW0lEQVR4nO3UvW5VRxSA0X2ufV3w2yXKAyS0dLwP70UeiIqWkD5Oa4MljK8OxRESSKH4JKSDo7WqGU2xd/FplnVd18vbmb9vZq5PM3frwDfOl5nHZzO/P5j59WJmufy4rq+v9l6L++LFk5nzdzfb5beLmWcPt6Lga9enmbcfZv65nfnrZuZwdbc9CIbveXy29TEz8/40czh99QDf86WPT+vMYd9VuI9EQyYaMtGQiYZMNGSiIRMNmWjIzvcY+vLNpz3G/q8sM/P...
1
math
grade-6
reflection-rotation-and-translation
false
true
How has this figure been transformed? It has been...
"iVBORw0KGgoAAAANSUhEUgAAAPoAAABkCAYAAACvgC0OAAAG2klEQVR4nO3dQWyTZRzH8d+6rlvLDN06kQ2mIGSQSIIYd5BFeUmEeWIe4cbwpIaLiZoYjd3JRBMvRm9mu8kRvIkRgsm4zITGSAQCRjeBoNvcENZtHXs9QIew9u3b7u3bt+/z/SQcYE//z0P3/ta3797n34Z9+/bZlmXJC+fOnZNt26Je5fXOnj3rSa1asywr0M+zafWilmUpnU57UnBoaEi2bVNvDfXCguMqWPUinlQCEGgEHTAAQQcMQNABAxB0wADRWi8A8NvyUkL...
[ "rotated", "reflected", "translated" ]
null
2
math
grade-4
identify-faces-of-three-dimensional-figures
true
false
Which shape has a rectangle as a face?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAUg0lEQVR4nO3d6W8c530H8O/zzMwevI89KEeydcu25MR2rbh20ORFUaAFGhRFjbRufKRx9a5/UgHHQewILtwGaRsgaA3UhmTrsCXaOixK1ElSJsVDIne51+zM0xezJ7UjkyKHszPz/QC2xCG5XJH7fZ5nn+e3PwqllJqtAJMFIGcBVQUi8ogugH4NONADZGOAmC0rdWbF77tFFD0vDwD6tYLzxo4YcKjXSScReSNnAROrwLcV4GoBkCtV5x0MH5H3+jUnawCQtwB...
0
math
grade-4
parallel-perpendicular-and-intersecting-lines
false
true
Are these lines perpendicular?
"iVBORw0KGgoAAAANSUhEUgAAAFkAAABdCAYAAADOmsq5AAAKUElEQVR4nO2de1BU1x3Hv3thzBUQl6gQJgXUjqYGRZRkYFoRtWqUMVzUIVGJovFZHR9U2yhqfSSRanV8RZPRdBSx1CqikipqReRhh/qCBHyAEXloRsEIBJGBXfbXP2Dv7C4g7O59Ip8Z/4DZe87P7x7O/Z3z+95zNURE6EJUGLkDeB3oElkCzESOTz2M7x/myhRK58XR9Ieq2ioERQdA66zFmKFjMfG9UEwK5KB11soUXudAY3nj+9VMd/xc87PZh/z6DUVYYDhGDg5...
[ "yes", "no" ]
null
0
science
grade-4
animal-adaptations-feet-and-limbs
true
true
Golden eagles eat fish, mammals, and other birds. The golden eagle's feet are adapted to grab prey. Which animal's feet are also adapted for grabbing prey?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOydd5xcdbn/399zztSdsr1mN2WTTW8kIYSQQOhNQIqCCCJcQVEQEH6gXi8X4QpI86oRIYiEogjSESSEEiAhpBBCetvsJtlsb9PLKb8/zszszO4GFoxEueed17wyc+r3POfM7PN9vp/n+QrDMAxVVdF1HQsLCwsLCwsLCwuLf08kSUJRFEQymTQs597CwsLCwsLCwsLi3x9JkpAs597CwsLCwsLCwsLiy4Gu60iHuhEWFhYWFhYWFhYWFgcPy8G3sLCwsLC...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOydeZwlVXn+v+ecqrt139v7dE/Pvs/AsAz7LogoGoP7HhLFqBGVKNGI0V+MomKCiokiGowRxQQlbqhE2WRfZ4BhFhhmX3qm973vWuec3x+n6vbtngYGHCUx9fDpz3TfpW7VqarLec7zvM8rrLU2CAKMMcSIESNGjBgxYsSIEeN/J6SUeJ6HEOLF3pUYMf4oIWPiHCNGjBgxYsSIESPG/34YYwiC4MXejRgx/mghY+IcI0aMGDFixIgRI8YfB+K5fYw...
0
math
grade-2
write-subtraction-sentences-to-describe-pictures-up-to-18
false
true
Which subtraction sentence does the picture show?
"iVBORw0KGgoAAAANSUhEUgAAAfQAAABkCAYAAABwx8J9AAAeG0lEQVR4nO2de3Qb132gv8GLAAk+RVIPUqQlktbbtC1TipxIllf2Jo6tyHG08cbyNjppk63dxt08ts3p2d0mzTlpHj3dc5pu6uw2jeJGXrtrRbWd2HUsN7JlS7YsyXpaokhRFkWK7wfeGGCA2T8ggAQJEgABSgT4+/4RZjBz537m+PfDvXPvHUXXdR1BEARBEHIaw82ugCAIgiAImSMJXRAEQRDyAEnogiAIgpAHSEIXBEEQssrF9ss3uwqTmEmdcs3DdAPrIQiCIOQ...
[ "15 − 6 = 9", "16 − 7 = 9", "15 − 7 = 8", "14 − 8 = 6" ]
null
2
science
grade-2
compare-properties-of-objects
false
true
Which property do these two objects have in common? Select the better answer.
"iVBORw0KGgoAAAANSUhEUgAAAWwAAADcCAYAAABUIpt4AABecElEQVR4nO29d5wlVZn//z4Vbr6d4+ScmBnykDMuCisiwvI1oaKCCkb0p67rsq6ZNS/qugYMsCoqiAEBRQUkDjkMA8Pk0DM93dP5xqo6vz9OVd26Pc1MD/RMd8+c97xqbr636t7qTz31Oc/zHCGllACFQoGOjg76+/txHAeNZryxLIuamhra29tJJBL79bP0/q+ZaIy0/wsppczn86xdu5aZM2eSSCSwbXucV1WjgXK5TKFQYMOGDcyfP3+/ibbe/zUTkZH2f5HP5+W...
[ "bumpy", "stretchy" ]
null
1
science
grade-7
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.
"iVBORw0KGgoAAAANSUhEUgAAAcgAAACBCAYAAABEgSr6AAAYW0lEQVR4nO3deXgUdZ7H8Xcf6TQ3CAiJAcIQNAwgcg/CoAyMyPGAOig4suuow6qrqOu6i7ui46w6jMeu54ijTB5FlJlhHXZgYFBRIwLKpYAcQriPcIYkkJB0+qj9o00kpiHd6equ7s7n9Tz9PNBH1bfrqU++1XX8ymYYhoGIiIjUYre6ABERkUSkBhkHGzduxGaz1Xq4XC5yc3N5+OGHKSsri2h6kyZNYtSoUQ2q5euvvyY3N5fWrVs36PMiyS5R8rht2zYmTJhA+/b...
[ "The magnitude of the magnetic force is smaller in Pair 2.", "The magnitude of the magnetic force is smaller in Pair 1.", "The magnitude of the magnetic force is the same in both pairs." ]
null
2
math
grade-2
names-and-values-of-all-coins
false
true
Which coin is this?
"iVBORw0KGgoAAAANSUhEUgAAANUAAADVCAYAAADAQLWDAAC5AklEQVR4nOz9fWzU55U3jH9szMzgsWdsD2MwBscvY7QNhuSWDazv8LOSEBM2WTVxtJFMVqsgFS1SH91BQneUzZM0VbPJna2yTyRS3ZGyYiWq1R2QuqqTqs0SHJI+PGG9gNEGsOkKxjY1mBcPY3vGL3j8+vvjms+Zc10zJmmbtuluj4RsPDPf+b5c5zpvn/M5eYuLi/ij/C5lanEx/hl+cmIC32wpsn7WzXXiiW//IwCgvbUBRzp7rE8u9bctT78sxwAgv++8PwVvzRM...
[ "dollar coin", "half-dollar", "nickel", "quarter" ]
null
0
science
grade-3
animal-adaptations-skins-and-body-coverings
true
true
Crown-of-thorns sea stars can release venom from the spines on their brightly colored bodies. The bright colors serve as a warning sign that the animal is venomous. The skin of the crown-of-thorns sea star is adapted to ward off predators. Which animal's skin is better adapted as a warning sign to ward off predators?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOzddXxUV/74/9e4Wybu7iFIcIfilBpSSoVS9627bV22Ro22S0ttqWMtLe4OISQhxN2TyWQyrr8/+mi+pQst7bLb3+5nno9HHg9G7rnve4/cM+eeexAEAoGA1+vF7/cTFBQUFBQUFBQUFPTfSSgUIhaLEXg8nkCwcx8UFBQUFBQUFBT0308oFCIMdu6DgoKCgoKCgoKC/jf4/X6Ef3YQQUFBQUFBQUFBQUFnT7CDHxQUFBQUFBQUFPQ/JNjBDwoKCgoKCgo...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOzdd5glVZ34/3flm2PnnKcnMwkGmBkykhxBQESMuCZEd43orutvXYyrq66sKKvi4qqLCQUM5DAMA8MwOfdMT+d0u/vmULl+f7TMVxQEXfbn77t7X8/TzzNdfe+pT1Wdc6ZOnVPnCJ7nebZt47ouVVVVVVVVVVVVVVX/dxJFEVmWEQThLx1KVdX/SGK14VxVVVVVVVVVVVX1fz/XdbFt+y8dRlXV/1hiteFcVVVVVVVVVVVV9T9D9d6+quq/j/iXDqC...
1
math
grade-8
classify-quadrilaterals
false
true
What name best describes this shape?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACkCAYAAACtrFmWAAAaJUlEQVR4nO3dfYwc933f8c/M7szs3MPy6Xi8Oz4cyTsapKDUjOnQjmTJaKTUkVI0qBQgSCEYKdrGriqnkVo0sVQnBRw/IDVCpJblKG3gIHCcGrWNAgkgGA0SWKwslZEcwg8SI97yUeSRx8fbvbvZmX2Y/jH7cHt3lEje7s4+vF//HLi7x/3ecf747I/f+X6NMAxDAQAAAGgKM+4CAAAAgF5CwAYAAACaiIANAAAANBEBGwAAAGgiAjYAAADQRARsAAAAoIkI2AAAAEA...
[ "parallelogram", "quadrilateral", "trapezoid", "rhombus" ]
null
0
math
grade-2
match-digital-clocks-and-times
true
false
Which clock shows one o'clock?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAMIAAADICAYAAAC6ej5XAAAPUUlEQVR4nO2dbWxb132HH5KSHdtUZHdBTBt12lpcHCBDRA/DvEFSh32ZNAz9MEtBsAyLg63JVnnY4hiVgC12EakdYgNxsC1W0QwFIuUNyGxjcQrUHOAETcQsTfZBaoJlTkSnSZeZTOKXSaRjS3zZB5oydRVRPLzkvbz07wEMixAPz+HR/7nnnP89915fPp/PJ+Zh5jLMZSGTR4imp8UHbQH49fWweQ34Elfz+bdm3W6WEO6x62Zo+eBy4cWWNbBjQ8ESIZqduSy...
1
math
grade-8
identify-congruent-figures
false
true
Are these shapes congruent?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEZCAYAAACtj1KJAABZRklEQVR4nO3dd1yVdf/H8RdLpgy35EScOEjLXW5z4l4oemuaI61saqVZmk0tNU3TnGhuQU3THJVpWi5woSimKbhAQNlwzu8Pivv2p5XjwMV4Px8PHo+Ac13X+9z3ET58z+f6fK3MZrMZERERERGxCGujA4iIiIiI5CcqsEVERERELEgFtoiIiIiIBanAFhF5QJs2baJ58+a4u7tTunRpBgwYwNWrV42OJSIiuYQKbBGRB/DRRx8xfvx4JkyYQFRUFCEhIbi6utKhQwd...
[ "no", "yes" ]
null
1
math
kindergarten
fewer-and-more-compare-by-counting
true
false
Which group has more?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAALFUlEQVR4nO3d24vU9R/H8df3+52ZPeju4p7sh4dgdf1F4YEWKzdISNL0hytkIFR/gheB3QSSFtSV913UlQQVYmHepKEYgaALecjK0xqCsp523XZ11zl8v5/fxaZUtjnj7nzfM/N9Pq5cdvl+XrLzZJgdZsZzzrlrOeniuDQWSgUnAGWS8qSmQOpulOZmJO9a1rnjo9azgOR5vllKXRif/OI/Gem/sybrBFAeY6F07q40mJPOj0v+aGHyG8QHlF9TMNmaJN0JJT/...
1
math
pre-k
fewer-and-more-compare-by-matching
true
false
Which group has more?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAYAAAACGCAYAAADU6V0WAAAJ6UlEQVR4nO3dS2xU5wGG4e/MeMbcbBMwcdKEVgRhFpUgog0EpFRpGpUmEmqSpru2Uit1nQ1NFwgp3LrqpvusUNRN1RaClAbUi6BVktIFhSxIoFapghqMzc0TDJ7b6WJi4VAutpn/O2fmfx8pShDEc847yB9nbiRpmqYXqtK/JqVKQ6qnAgB0oZ5E6itKaxZJQ2UpuTCVpscnsj4sAIDTpn6p5+xk6wePlqW1i1vrAADoPpWG9PF16dOqdGZSKkzUWz/BN38A6G5...
0
math
kindergarten
identify-pictures-with-symmetry
true
false
Which picture has symmetry?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAVF0lEQVR4nO3dSWwk12EG4P9VdfXObi4zI2mGs0jWLBppFsmSxrZgxUEiyIDhQw5JLoKRi5MAiXNSTrk4cJCTAwRIkEMU5JLAAQQbAqQkPhhIDEW7IkXLSJpFGo2Gs3HIIdl71/ZeDsXm2iSryO5+Vc3/A4ghmz3s113911v7lVBKqdsO8HkTqPmAp0BEfZISwIgJHM0D96QBcdtW6p2q7mIR7T7nSkDqcjP44b40cLwQpJOI+qPmAxcbwC0HuNQEjKoX/ILhI+q...
2
science
grade-5
identify-ecosystems
true
false
Select the tundra ecosystem. This ecosystem has: hot summers and cool winters a medium amount of rain soil that is rich in nutrients 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 m...
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAp8AAACtCAYAAAD2xRSHAAEAAElEQVR4nOz9ebC1WVnej3/utdYz7OkM79RvT9A0Q2OL+EOUoKKoQalE/1EcYhCKoKWJZWIcSJwqlomlfouYSmkIWlEwikmwMGqqYjQGUUEJaBQVBwRsuml6eKcz7eEZ1lr374+19j7nvP12g4xqP1fX7n329Oxnemtfz3Xf13XL7x6o3jWBmWXAgAEDBgwYMGDAgI8JjgK8awFy6FUH4jlgwIABAwYMGDDgY42jAKKq+olekQEDBgwYMGDAgAGPD7iTD978zms...
0
math
grade-7
front-side-and-top-view
true
true
If you look at this object from the top, what will you see?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAESCAYAAADHSKJKAABMOElEQVR4nO3de1yUddo/8A/iSqg4tPALmx4cEG1sF0F2PbSyjtgq6m6i1Wr7vBLRPDxSHiAdt6dS8LS7igcUW0pTULQwN8LRzJAENdhQNgZIc1rQAYSFHqhBCENFfn+McyeEyGFm7pmbz/uvQOC+qP64vl+v+/o4NDc3N4OIiIiIiMyil9gFEBERERFJCRtsIiIiIiIzYoNNRERERGRGbLCJiIiIiMyIDbYEabVaTJgwAd7e3ti/f7/Y5RARERH1KA7cIiIdBoMBkZG...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAygAAAESCAYAAAAWivETAABQJUlEQVR4nO3dfVSUdf4+8AsxSRMHF75h0w8HfGisRZBdH1pZR2gFdTfR2rX6nkR8SL+yqYE6blsZ+LS7ig8o7lKagqKFWQSjqSEJYrChbAyQ5mygAwgLLdgghIEivz/GuRM1Q+bhnrm9XufsOQsC89bqnLn8vO/P5dTR0dEBIiIiIiKyCCcnJ7FHcGg9xB6AiIiIiIjIhAGFiIiIiIjsBgMKERERERHZDQYUIiIiIiKyGwwoEqTVahEcHAwfHx/s3r1b7HGIiIi...
1
math
grade-6
front-side-and-top-view
true
true
If you look at this object from the side, what will you see?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAFGCAYAAABQV+irAABQyElEQVR4nO3de0CUddo+8GsYBBVhKC0MyhH1TdpWDruKu8lyiDda2xLM7fQqiJZ5KAMk7ZeagKFruuCoeCgzBbIyVzmUtmEKslApbg64FqQuAwYLG9YMoAKC8/tjnCdBxAFm5pkZr88/r8Ocbna33vv5ej/3JdFqtVoQEREREZFR2IldABERERGRLWGDTURERERkRGywiYiIiIiMiA02EREREZERscGmflOr1Zg1axYkEgmSkpKgVqvFLomIiIhINBJuEaH+2LBhAxI...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA8gAAAFGCAYAAAC2d7aDAABcG0lEQVR4nO3dfVzV9f3/8Qei4BUXTRsOloi5aWuKfEvcdzIuxjdabYnmd9W+CV5UUysHZNpv5gQdOrOpWF41MxWyMr8qWtmiDOQLXYibB12lpeOAwWDTOlyogOL5/XHkLMsLLg7nwzk877ebNz2ccz6f1/nui/nk/Xq/Xx5Wq9WKiIiIiIg4hIeHh9EliEgbdTO6ABEREREREZHOQAFZREREREREBAVkEREREREREUABWURERERERARQQBYHsFgsTJkyBQ8PDxY...
1
math
grade-6
classify-triangles
false
true
Is this triangle scalene?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAC9CAYAAACJdQrFAAAmCklEQVR4nO3da1xVdd738S8ggUFY28SMNDJDoV0q3jFGzpg6goBO1GRW42mmu3I0T0VpmmYe85CWdo9dOZVezTBXXnlmgyfUTGm0SBsVyxgQjyUOjCgIbffmfkCsK6/K49577c3+vF+veTD8ca3vNPPg62/Wb62A2traWgEAAABwiUCzAwAAAAANCQUb+Bnl5eXKzMzUoEGDZLFY1KpVK7MjAQAAH9DI7ACAN9m9e7eys7Nls9mUl5d33lnLli1NSgUAAHwJBRt+raq...
[ "yes", "no" ]
null
1
math
grade-2
place-value-up-to-thousands
false
true
What is the value of the underlined digit?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAAiCAYAAABlRa5TAAAGg0lEQVR4nO3dX0hUWxvH8d9k4p80zf6ZpRbdlFQ0mlGBqVMQEoFdlKQRVihCUNhF3VRgEcncqARBWEogoRYJIaQkIUbdDVqBCpZplglmTDll5uS8F+LGSc/be2b20dfD93M1a9ba63n2XD1s1jzb4vF4PAIAAABgigVznQAAAADwb0KBDQAAAJiIAhsAAAAwEQU2AAAAYCIKbAAAAMBEFNgAAACAiSiwAQAAABNRYAMAAAAmmlZgt7W1KSsrSwEBAbJYLLJarX4F+PD...
[ "8,000", "8", "80" ]
null
1
science
grade-4
animal-adaptations-skins-and-body-coverings
true
true
Desert tortoises are adapted to protect themselves from a predator with sharp teeth. They have hard outer shells covering their bodies. A desert tortoise can pull its head and legs into its shell when attacked. Which animal's body is better adapted for protection against a predator with sharp teeth?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOy9ebgkRZW//8aSmXXv7b7dbC4gDErTirLJ4KAoq6Ki2ILiwiKK6OCCCwoCfh0VUWFkUxERcEPRUVFccHRYRJFFBoUGARcQFBGBBnq5S1VlRsQ5vz+ibtkrfYGrOPzqfZ6CvlVZmZEZkVknTnzOOUZVNcaIiDBgwIABAwYMGDBgwID/m1hr8d5jQgg6MO4HDBgwYMCAAQMGDPi/j7UWOzDuBwwYMGDAgAEDBgx4bCAi2Ee7EQMGDBgwYMCAAQMGDJg5Bgb...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOz9efwkVXX/jz/vUlXd/d5mZWCGwQGGfUdwB0GDikHcUFSQuCVEP+6RiJrFJYkmqGDUuBsXzDdR4xKMC+CCKxHZZJNtYNhmn3mv3V11l/P743b3vLdhBpwE9devx+M9011ddev2vaeq63XP65yjRES898QY6aOPPvroo48++uijjz5+P6G1xlqLUuqR7kofffxBQveJcx999NFHH3300Ucfffz+I8aI9/6R7kYfffzBQveJcx999NFHH3300Ucfffx...
1
engineer
grade-8
identify-laboratory-tools
true
false
Select the test tube.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AAA7SElEQVR4nO3de5hcVZkv/u/7rrX3rnvfEnIhCfcQuYW7EUm4hIAjIioQEBwRZhTROTPq+JuR4+M5zOjMHByHn8c5o+BvEEcJkkaIDorOb8QoMtyTYEJIgAQIuZF0+lrdtWtf1nrPH52OIeTSSbq7qrvX53nydFd1ddVbVf3Nrr33Wu8CHMdxHMdxHMdxHMdxHMdxHMdxHMdxHMdxHMdxHMdxHMdxHKe+UK0LcIbPnXfemQ2CoIGIcrtd7TGztdYa3/e7lFL2ppt...
3
math
grade-2
compare-clocks
false
true
The clocks show three things Liz did Sunday after lunch: Which did Liz do earliest?
"iVBORw0KGgoAAAANSUhEUgAAArIAAACZCAYAAADTjdlcAAAncUlEQVR4nO3deXgT5d4+8DtNmq50p6VQKC2LUEBWlbUHcGErCCj+zgEBlSO7gr7lLUoPInpQWRUXwKWiIr4KuB0UUJDlAAdlsbIVsLUtyNJCoS3d0izz+6OnSdMmaTKZNJn2/lwXl81knsyTOHfmOzNPZhSCIAggjzTrywps/lUn2etF3jgGX02hJK/l4+eHn1YMRZC/tySvRyQXzCWR52Eumy4vd3eALMu9JUgaSqlpysux8Ydcd3eDqEExl0Seh7ls2ljIeqiLhQZ...
[ "did a puzzle", "fed the fish", "got the mail" ]
null
0
science
grade-8
use-data-to-describe-climates
false
true
Which statement best describes the climate of Kansas City? Hint: Summers in the Northern Hemisphere occur in June, July, and August. Winters in the Northern Hemisphere occur in December, January, and February. Kansas City, Kansas, is a city in the United States. It has a humid subtropical climate.
"iVBORw0KGgoAAAANSUhEUgAAAtgAAALOCAYAAACTXGSDAAEAAElEQVR4nOzdd1iUZ77/8ffQqxRpKk2xIgrYUNRgbDFrNNaYbJppm5i466Zu2m93T3Y3u+ds4tlNdDcn1ZiyiRqMiprYsSMqRRQQFRELIL3DlPv3xzijKEaNAzPi93VdXjLPPDPPh5lh5jv3cxeNUkohhBBCCCGEsAg7awcQQgghhBCiI5EC24KSk5PRaDRoNBoGDRpk7TjiNrRkyRI0Gg0xMTE3fV9+fn5oNBqWLFnSYvuhQ4fw8fFBo9GwYMGCmz6OLUpNTWXOnDl...
[ "Winters have lower temperatures and slightly more precipitation than summers.", "Summers have slightly more precipitation and lower temperatures than winters.", "On average the winter months are drier but have about the same temperature as the summer months." ]
null
0
math
grade-1
ordinal-numbers
false
true
The first picture is a train. Which picture is fifth? first
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAnXUlEQVR4nO3de1xUdf4/8NeBIRlABoNFWi5iYqCJgOUVLHtsWqal29Z629Zb+9sVrbV1Ra2+Cfu1xEtlG6Lf389r369pWm2ZlJd2sy9iaiYIKrgO2wCaqOgyMsygzMz5/XGYG8zlzMyZ63k/H499PL7MnMuH9/ct593nfC4My7IsCCGEEEIIIYII8XUDCCGEEEIICSZUYBNCCCGEECIgjxXYrZ0s+h+6jZx/tKG1k0ahEEIIIYQQcXCpwP7saieK6jrsFs5HW7RQqPW...
[ "bear", "plane", "train" ]
null
0
math
grade-7
identify-reflections-rotations-and-translations
false
true
Look at this shape: Which image shows a translation?
"iVBORw0KGgoAAAANSUhEUgAABbAAAAC3CAYAAADD5XikAAAkGUlEQVR4nO3de3Dd9Xkm8EeWhC+ywcbGWIc4eBcIYHACCGhzwSEhTUJTdtPZhlw2aZnJhNI2W9J2u70ws5h280en7W4ys+0EOtsu3bQZshtTSkJKoAyXhEvtAybYTg2xwTg+wvIN8E2OJXn/MBK2sWXJOrff0eczw6DL8fe8HH6Wjh69etSW5GAAAICqOHjQ02sAAKiWKY0eAAAAAAAAjkWADQAAAABAUxJgAwAAAADQlATYAAAAAAA0JQE2AAAAAABNSYANAAAAAEB...
[ "B", "A", "C" ]
null
2
science
grade-2
identify-solids-liquids-and-gases
true
false
Select the liquid.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AABRD0lEQVR4nO29eaws2X3f9znn1NJ73/Xt82aGw3kzmiFnhpoZihQsktZiWZYtCqESGJGBwJAS/xEotB1bMJQgCmBFiRxEECRFCmQpghwHiWALliXQkUVJpCgumhEpUlyGHHL2ect9d++9u5bzyx9Vp7q6371v3pu33Dtkf4FCdVdXV52q+tZvO7/zO+ovOiIP1aFpWGCBu4peCs8P4EoEyx78taVsu14QcoGjQtPAQ/Xscz+dbtcLQi5wlHD8i2W6TR9NUxZY4HA...
1
science
grade-3
classify-fruits-and-vegetables-as-plant-parts
false
true
People use asparagus plants for food. We usually eat the part of this plant that holds the plant up. It carries food, water, and nutrients through the plant. Which part of the asparagus plant do we usually eat? People use asparagus plants for food. We usually eat the part of this plant that holds the plant up. It carri...
"iVBORw0KGgoAAAANSUhEUgAAARoAAADKCAYAAAB6+o8hAAEAAElEQVR4nOz9V49t23adCX7DTbts2G3P3sdfy3tJkYJEiSolkAYFVJr/of+iv1FAPuVTolBVBJLKLEqiURZ57bnHbxs7dpjlphu2Hmas2HGu9MwjoDSAQESsmLHmcqPN3lvvrXXxr/7Vv0r8l/Vf1n9Z/3+x/vW//tffy3k1wE//pz8lxsjgB6zrkCpSVlBUAqMtRgdk8qgUUdGgoiH2kr6JuN6BDyilyGUBaHwvcDags5KyLpkclJAHXGbp5YZe7vC6o6chDQP2bMf...
[ "the seeds", "the stem" ]
null
1
math
pre-k
classify-shapes-by-color
true
false
Which heart is purple?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAG0ElEQVR4nO3dPWwbZRzH8d/Zjl8SO3ZeVCdTWymFZHNY2g6J6IYbISWVqgJT5W4VFMQEbUZSukZtxgKdgCJIBUrCVhQGqg7YW1pciTLFiJfGjmM7qc0xHI5akSaxff5fnud+n6VxbPl5XH19d8/5rBimaZq5LeBRCVivAVUTRC3zGUDECxzrBOJ+wMhtmub9gtPTIp0d7wZ82ZJ1Y9APvNxlVUjUqvUa8HADWN0CfikBnkLVuoORkZ0iXqspACjWAE/tmTuI7FR...
1
math
grade-7
perimeter-and-area-changes-in-scale
false
true
Look at this rectangle: If both dimensions are tripled, then which of the following statements about its perimeter will be true?
"iVBORw0KGgoAAAANSUhEUgAAABEAAAAOCAYAAADJ7fe0AAABFElEQVR4nM2SMYrCABBFn5J0go29rYXkICKIeIlArGLjASTxBlrrBRTTpUlhISG9IDZJ6kAkldXfYlkb3UVis68c/rxhhmlIEh/S/FTwJCmKgk6nw3q9fhnebDa0223m8znX65Xj8fgsmc1mtFqtXyfu93sWiwXL5ZLD4fCQGD+BKIpI05ThcPhS4HkeYRgSxzFJkhAEAaZpcrvdQJLu97ssy9L5fJbjOFqtVnrFaDTSdruVJDmOI9/3JUlNAN/3GY/H9Hq9N874jHG...
[ "The ratio of the new perimeter to the old perimeter will be 1:2.", "The ratio of the new perimeter to the old perimeter will be 2:1.", "The ratio of the new perimeter to the old perimeter will be 3:1.", "The ratio of the new perimeter to the old perimeter will be 4:1." ]
null
2