subject
stringclasses
4 values
grade
stringclasses
15 values
skill
stringclasses
445 values
pic_choice
bool
2 classes
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bool
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problem
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1.12k
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answer_idx
int64
0
3
math
grade-1
select-three-dimensional-shapes
true
false
Which shape is a cylinder?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAMhUlEQVR4nO3d228c1QHH8d+Z+67XF2InIU7ADiWuKlpoQsChEn1p+1DUSuUpL6jP/Usq9d/grX2p1IvEA5VaKhUIgQBqEYlDjJX7jcTe29xPH/Y269hZrz07M2f393mLHduTzVfjmXPOnBVSSnnHB642gGoEhBJEhWMIYFoHTpWBoxYg7nhSXtjK+7CI9m51BjDWGq0/HLOA70+1qiYqmmoEXK4Dt33gSgPQtsLWJxgtFdm03moUAGoRoEWJTxAVWafRQAJavod...
2
science
grade-5
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.
"iVBORw0KGgoAAAANSUhEUgAAArYAAACtCAYAAABFjTydAAA0m0lEQVR4nO3dd3hUVfoH8O/UzKTNpBeS0BJBqtIRBEGKSFEpioACim3trmtZdNeGoutvZV1ddC0LGFfXQrGAsorAilKlSQs1pPdJMpmZZNrvD5asSJuEe++5M/P9PE8en4TJe94xd868c+4pGr/f7wcRERERUZDTik6AiIiIiEgKLGxJlXbs2AGNRnPKl9FoROfOnfHYY4/Bbre3KN7kyZMxYsSIVuWye/dudO7cGVartVW/T0SkVmrpa/fu3YsJEyYgKSkJSUlJGDd...
[ "The magnitude of the magnetic force is smaller in Pair 2.", "The magnitude of the magnetic force is the same in both pairs.", "The magnitude of the magnetic force is smaller in Pair 1." ]
null
2
math
algebra-1
perimeter-and-area-changes-in-scale
false
true
Look at this rectangle: If the height is quadrupled, then which of the following statements about its area will be true?
"iVBORw0KGgoAAAANSUhEUgAAAB4AAAAOCAYAAAA45qw5AAABoklEQVR4nOWUsYrqQBSG/6xC0lgMSgTRaYW8gIWdCAoiYi0IISA+gKiFYKf2VmrjI4giqKWKndraSUxhKYJFkOjZ4nLDhhvusgt7Le4HpzicOfMxZ4YRiIjwAt5eIbXF9XodgiA4Ip1O/7wYADRNAxHZMZvN/o34K+i6jlwuB8YYOOeo1WoAgEAggEqlAkVRwBiDpmkYjUaIxWLw+XxIJpO4XC5O8XA4hNfrRSgUQrVaxfP5dJValoVMJgNFUXA8HrFYLKDrul0/n8+...
[ "The new area will be\n1\n2\nof the old area.", "The new area will be 4 times the old area.", "The new area will be 3 times the old area.", "The new area will be 2 times the old area." ]
null
1
science
grade-4
animal-adaptations-skins-and-body-coverings
true
true
Camels live in dry places such as deserts. The camel is adapted to be camouflaged in a sandy desert. Which animal is also adapted to be camouflaged in a sandy desert?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOy9d7xcVbn//15r7T0zp5eck15IJaGFXpVLKFJFvBSpalBRERS5IIjgvZQrERRQRFQsgBSVK1Uul1CkBIQAgRhaQkgh/SQnOf3MzN5rPb8/1p5JhRzgKH757Q+vvMg5s2fvtddeM3meZ30+n0eJiMRxjHOOFClSpEiRIkWKFClS/L8JrTVBEKCiKJI0uE+RIkWKFClSpEiR4v99aK3RaXCfIkWKFClSpEiRIsXHA8459Ec9iBQpUqRIkSJFihQpUvQf0gA...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOz9ebxlV1XuD3/HmHOtvU9VqtKHEAiQhpAAEogo3QVBQLqIeBPa0Jhc5GoMgly4CApeGiU0AooIgtJJaJUAwRfpIkhQSAcREKRJAiEEkgBpquqcvdacY/z+GHPvqkpDVUJpkHc/nw8k55zdrDXXXCvzmc8zniHu7qUUzIwlllhiiSWWWGKJJZZY4r8nVJWcMyJyUx/KEkv8TEKXxHmJJZZYYoklllhiiSX++8PMKKXc1IexxBI/s9AlcV5iiSWWWGK...
1
math
grade-7
bases-of-three-dimensional-figures
false
true
Look at this figure: What is the shape of its bases?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADZCAYAAAAaEEeJAAAiQElEQVR4nO3de3iU9Z338c9MzgeSTAJBDjEhCRgwgSoCkQIBsa0ix2VxXfWxVbu92n1q7YHWutvKile1tUVtu20tu+22YrlEXVCMoD6SEE6GoiiHKFKSkJgQkpADQ87JzDx/AFMmBA3hnrnn8H5dl3/oPZn7G/WPtz9/v/u2uFwulwAAAAAYwmr2AAAAAEAwCbnAvu+++xQbG6t58+bp0Ucf1fbt280eCQAAAEHEEipbRGpra7Vo0SK9//77A16fO3euCgoKNG/ePBU...
[ "heptagon", "triangle", "square", "circle" ]
null
2
math
kindergarten
count-scattered-shapes-up-to-5
false
true
How many shapes are there?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAELCAYAAACszPLJAAAMxklEQVR4nO3dvW4UWReG0V2fPBiIByITknF1oyHgCgiM5uqcEeIIT2wMY6kmQD1YH9iu7q46P/usdQHoSPUGjw5V7Wme5zkAAIAU/lf7AAAAwHoEPgAAJCLwAQAgEYEPAACJCHwAAEhE4AMAQCICHwAAEhH4AACQiMAHAIBEBD4AACQi8AEAIBGBDwAAiQh8AABIROADAEAiJ7UPwHa+fPwWn95/jvnrXPsoD5pOp3j17mU8e/2k9lEAALrnBj+pXuI+ImL+Osen95/...
[ "4", "1", "2", "3" ]
null
0
math
grade-3
is-it-a-polygon
false
true
Is this a polygon?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAC8CAYAAABCKdlgAAAW+klEQVR4nO3dTUxb95rH8V+vRrAgDlzJEQlU4kUgwcp2FnQTglGyGMiiEE2YrIrd6u4mxFmWLkIXye0uQLOaUYvpKkN6i7uBDdV1oJvJAg4rkEDElepCFUvXxXQBm8zCHPOWhLdjn3Ps70eqeFHBTyQQPz9+/s//gzdv3rwRAAAAAEv8xe4CAAAAgGJCwAYAAAAsRMAGAAAALETABgAAACxEwAYAAAAsRMAGAAAALETABgAAACxEwAYAAAAs9G92F2C1xOa6FlOrMlI...
[ "yes", "no" ]
null
1
math
grade-4
compare-fractions-using-models
false
true
Which fraction is greater?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAC5CAYAAAAS5EjTAAA0cElEQVR4nO3df1RU57kv8C8OZIFGZ6anVaBphxE9pAmWwZgmpwFhtFntydUwmB+axnUYC1azmhNn0phCzm0CTW8xTVYYum5vNCE69CS3om0ZxJXmrEYYZU5+K+PR9OgtyMxtIsaeWzaJyRgdO/ePyd4OiDrD7B8z8P2s5YrAzN4v8HT18dnP+7wZkUgkAiIiIiIiksUMrRdARERERDSVMMEmIiIiIpIRE2wiIiIiIhkxwSYiIiIikhET7M999tlnqK+vR0lJCebMmYO...
[ "neither; they are equal", "1/12", "2/3" ]
null
2
math
calculus
determine-continuity-on-an-interval-using-graphs
false
true
Is the function f(x) continuous on the open interval (1,7)?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB/5klEQVR4nO39eXxU930v/r/O7KMZSaMNSQgkwGwWRpjNGIxsHIjXJA04qd20Tp2maZybPb29t4/cNr/bXtdNb5vkmzRO49ymibP0pva1ndTGAmODLSxsMDIWSGAWAdpAy0gzo1nOnGXO+f0hRkZmG6Hz0Wik1/Px8ONhjWbe8+YczZnXfOZzPkcyTdMEERERERFZwpbtBoiIiIiIphMGbCIiIiIiCzFgExERERFZiAGbiMbYvXs35s2bh/vvvx8A8NGPfhTPP//8Ze+...
[ "no", "yes" ]
null
1
math
grade-2
select-three-dimensional-shapes
true
false
Which shape is a cube?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAL/ElEQVR4nO3dSYwcVx0G8K+X6prpdZZ4mVixsEPGKEhJWA0nC4TECSIklgMi3Dlx4M4BiQPiyAlxQIlyy8mRQCArkgEpwhBQHA4ee7zO1t3j2ad7ep3mUPWqq3uqa33V1dX5fpeZ3qYr0pfyq/9771+JXq/XK7eA1Tpw1AU6PRBNnHQCKKSAV7LAhQyQKDd7vTuHUR8WkXvXi0D6QV17sJQBruW0VBNNmqMusFIDtlrA/TqQPOxoLzC0NMkKKS2jAHDcBZJd0wt...
2
math
grade-6
understanding-percents-strip-models
true
false
Which model shows 33 1 3 %?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAUkAAABLCAYAAAD9NXUXAAACF0lEQVR4nO3XQU4TcRjG4W9K2wWg7jQeQDkCJ3DDLbyBCecg4Qbcgg034AaIe3FLoQmV5u9iQjQu3qQITkmfZzWTmUm+ZJLffNO11trVourbvGq2rLpvBbCxxl3Vq62qD9tV76ZV3dVda+fXQ48FsH72X1eNL+f9yftp1d5OX1CATTVbVl3cVn1fVH2dV42u7/sLAgnQd3Bvpz++WVaNln9cAOB3D3+2qtGwowCsN5EECEQSIBBJgEAkAQKRBAhEEiAYr/pAd3j...
0
math
pre-k
one-less-with-pictures-up-to-5
true
true
Count the pretzels in this group. Which group has one less than the group you counted?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABmCAYAAADxjOYpAABqaklEQVR4nO29d3gdx3W//+7e3gBc9F6JQhQCJNgpiaIkqlm2iltsy3ZcE+cbO7acxLGd7rjkl7jbceISO66Sm4rVC0VSYgELwILee8e9wO115/fHBUFClGSSIijQnvd59JDand2ZncEHczhz5hxFCCGQSCQSiUQikUgklwX19W6ARCKRSCQSiUTyh4Q0sCUSiUQikUgkksuINLAlEolEIpFIJJLLiDSwJRKJRCKRSCSSy4g0sCUSiUQikUgkksuINLAlEolEIpFIJJL...
null
[ "iVBORw0KGgoAAAANSUhEUgAABDAAAAFYCAYAAAClCwyGAAEAAElEQVR4nOzddXwd15nw8d/MZRQzy5Is25ItW2YnccDBpm2SQspMu2m722673cJud0tp3y1sadstN2UKtMHGMSQxgwxiyWJmXdLFOe8f15atOGQ3TtX0+X4+iaV7z8w5M6Nz75lnDmiAQgghhBBCCPGCUEoxEoXOEPgTEJfWthBCXBSzBh4TVDohxwoaEsAQQgghhBDiBTMSURz0/bVLIYQQLy0bvGD+axdCCCGEEEKIl5KOUPLfPCssdSWfHgohhLhw/gS0BWE...
0
math
grade-2
read-a-calendar-ii
false
true
What date is 5 days before December 15?
"iVBORw0KGgoAAAANSUhEUgAAAssAAAF2CAYAAACYtNXtAABcpklEQVR4nO3deVyVdd7/8RcHRBAVZHcXV1wIl0wRyXLJLa3MvNOauyltr9/MOKM5TOs05l1WUzZTNtNiauaaiVu4NKAgOq64YS5AioiiiIrsnvP7AzlCcOlBgQP4fj4ePtRznXP4nA/Xuc77fK/vdV0OFovFsvrcaTZkpJOSl4uIiIiI3LoW9V0Y7OnDSC8/e5cit8Bh1dk0S1JeDg/7NaOeowmLvSsSERERqeUcgIIrZpalnSSgfgNGeisw11amDRnpjPVrhpOCsoi...
[ "December 9", "December 10" ]
null
1
math
grade-6
classify-triangles
false
true
What kind of triangle is this?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAB/CAYAAADVVbV6AAAaBElEQVR4nO3de1TUdf7H8dfgoKM4iKJWmj8voaXhrpUrobRWpz1u1nbx5HFT2za3UsPKNnOzX5b9NBVqqTZK7KqZaGq69jPt51aaWuEVEAUEAs0L3hAEZoCBmfn9gSDmJYEZvgM8H+d4nBlmvt/3pH+8/PR+fz4mt9vtFgAAAACP8DO6AAAAAKApIWADAAAAHkTABgAAADyIgN2IxMfHy2q1asWKFee8vmzZMvXr108hISG67bbblJmZaVCFAAAAIGA3EjExMdVBuqY...
[ "equilateral", "scalene", "isosceles but not equilateral" ]
null
2
math
grade-2
compare-sides-and-vertices
true
false
Which shape has more sides?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAALgAAAC4CAYAAABQMybHAAAKOklEQVR4nO3dwW8cZxnH8d/seu21nTh1FNtJ7NIU4cRRFQoSShROtKIUNRyQmlMPvcChEoS/ghOIQ4W4c+ZAValwhBMSisQFVHsdQ+PEu2uvm7Vje+2Znd2Z4bDexknjxPbM7vs+z/v73Ko0yVP1q9XjeV+PvSRJkrUQ+O8esBMB7QREYg14wOk8MDsCTA0C3lozSe5umx6LKHs3xoCBpb3OP1wYBK6MduonkmonAhZ3gdUQuLcH5LbbnV9g3KTB6XynZQBoREA...
0
math
kindergarten
addition-sentences-up-to-5-which-model-matches
true
false
Which shows 3+2=5?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAABKCAYAAAAi2W96AAALBElEQVR4nO2dS2wc5QHHf988dmdf3tiOYyc2SpyEFPMoktU2cAKqJByqXpAicYBbe6EVUk+9cegBIfXUVq3U9sgB0WMRlaCgqNxKKUghQGkCTnDi+oGd2DuzM7Pz+HoYO/EL22Pv7O4M85NWq92Z7/Hf+e8333uElFLOtuBaExoB+JKcnJ5DE1BT4f4yDBdAzLpSvr/S7Wzl5Oyds32gXW1GH44W4DuVyNU5Ob1GI4DPLfhfC/7bBGXFjw7kps3pZWpq5FEAMwA...
1
science
grade-6
compare-thermal-energy-transfers
false
true
The table shows the same data about how the temperature of each cake changed over 5minutes.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAABfCAYAAACdpLOcAAAhKUlEQVR4nO3de1xU5f4v8M8Mw8wgAcpFjNAgVEAELyRCWzek1Pk12zIRSrd4Y3vJHwViZLhNDkEeszgi+eNoXnKTtpFtF/dReaVGHpWwJEgJtYxLQdghR1BGBAZm5vcHMYrcZmBwxuHzfr38w1nPWuv7rLWeZ74861lrBOJjjRoQGdFPwVKMOdVk7DCIHmhsR0S6aX5aauwQiAac0NgBEBERERGR4TDBJyIiIiIyI0zwiYiIiIjMCBN8IiIiIiIzwgSfiIiIiMiMMME...
[ "Thermal energy was transferred more quickly out of the cake in the pan.", "Thermal energy was transferred out of both cakes at the same rate.", "Thermal energy was transferred more quickly out of the cake on the plate." ]
null
2
math
algebra-1
identify-linear-functions-from-tables
false
true
The table shows a function. Is the function linear or nonlinear?
"iVBORw0KGgoAAAANSUhEUgAAAFQAAACCCAYAAADYDO/zAAAIq0lEQVR4nO2dbUjTax/Hv+nRfDwWplLrwZk2zSc0SJiGEKV1RxDanakksfBFC+pN+sIn0CITIU3CVWRtYFIdolYpnjsojehNWlFgKROFjCU+5NNYbs3rfnHXzvHUuc9/+bs2V9cHfOGFXr+vH///bf/t+v0v3Gj9nbkD7pLTAwJShFBihFBihFBihFBihFBihFBiuAu1WCw4efIk5HI5Hj9+zLucy+EqdHJyEnv27IHJZIKHx89xMnD9K2dmZqBWq1FdXc2zzKLiF56...
[ "linear", "nonlinear" ]
null
1
math
grade-7
nets-of-three-dimensional-figures
true
true
Which net will make this figure?
"iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAAIVElEQVR4nO3dX2wT9wHA8S9pk1QaSQyiYzSp4q4EYbLUtwJNGlBsliaiZSOmkSoGHUlopcEeFmcSSJOYGtGnFSE5VELqHobhoQ8VKQ6Ctks0YbMBDn/CpdMcKBs4xKHa1qGzA4TFd/Eegk0QKUTjzvnBfp8n549+vzt/feezz/LNSqVSKSRh5Mz0Akj3kkEEI4MIRgYRzNMzvQDfRlVV4vE4wWAQTdNQVRXgntsPoygKNpvtnttut5uioiIURbFkuR/VLBGOsqLRKKF...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAUIAAADlCAYAAAAmw/5+AAAaHUlEQVR4nO3df3BU9b3/8WewkMytsKcdb/lylSTelrTIjextw8UCcRcRp/LDbMrtnQr9ltB7O4nY+SbpTAWd67jW77XSToeNt1KYzsjSueq3fuXLRkCnorcbAxVM9LvCV6iJ37oJoKX165wEq0uyy37/2JwFLP4gOZuzOef1mMkciHjO+wPsi8/nfD6fc0qALFI0stksfxiC19+D0xlI609HxHafKoGpl8Gsv4LpU6AEBWFR+cOZLC8OOl2FiHfMnwafcroIuVD...
0
math
grade-6
changes-in-mean-median-mode-and-range
false
true
Look at this set of 8 numbers: How would the mean change if the number 45 were added to the set?
"iVBORw0KGgoAAAANSUhEUgAAAT0AAAAkCAYAAAD7Ne16AAAH/UlEQVR4nO3cfUxV9x3H8fd98l4ExMuDPAgFRfABpT6QOWetWItrNWbd3Kw1atusMV2Tri5tzJ7n1q5JZ9KkXbqsaxYnbV1ru7jaNIo0Wh8Wn13RoqgIqAiocHmW+3z2x6WUO3Act3vOPfN+X/8o5xw4n5zf16+/+zvnYFIURQHwB8HthaACCkII8f/PBJhN4BgFVnP/NkVRFLcPPP6oZhNCCE3ZreCwgdkflIYnhLj7efyhT7Rmjy/aUYQQQh8eH5gDwWjHEEIIfQS...
[ "decrease", "increase", "no change" ]
null
1
math
grade-2
skip-counting-stories
false
true
Each truck has 2 wheelbarrows. How many wheelbarrows are in 5 trucks?
"iVBORw0KGgoAAAANSUhEUgAAAXEAAADDCAYAAAB08iFuAAAnoElEQVR4nO3dd1QUVxvH8e+CrHSkKCAKKkoRsaOYoGLXaBTbG0zU2BKNJbbEEhMTY40lFmyxJdbYS9SoMRY0sYA9VkQsYFSMEVABFXbfP5BVhKjA4rDyfM7hnGVndubZ8frj7p2ZvaqIR1otQuRzwTMWAbDy024KVyJE/hE8YxFGShchhBAi515LiCc81lJ/dwKt9t0j4bF0/MWbSdq5UEKuQ3znzceERCS/sNEevpNCTKKGcwmpDDuZmNtdCvHaSTsX+VWuQnzsmST...
[ "2", "3", "6", "10" ]
null
3
math
grade-5
parts-of-a-circle
false
true
What is U?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADICAYAAACdx5VnAAAkA0lEQVR4nO3deVxVZeLH8e+97Juo4YK4AmqK4pq5ZIKGZplWtmc11e+nv6bmpVPZvjdlmzWtM+PU5LTMZNPm1pimoJZWbggu4w4uCKKggrJduL8/yOMlUHNUnnMvn/fr1avzPOdc+ILnj+89POdch9vtdgsAAACAT3CaDgAAAADg7KHgAwAAAD6Egg8AAAD4EKfD4VBaWlqtHQMHDlR0dHSt+aysLDkcDv35z3/Wu+++K4fDIZfLdc6DXnPNNbrkkkvO6GvMmTNHDod...
[ "center", "diameter", "radius" ]
null
0
math
grade-6
compare-area-and-perimeter-of-two-figures
true
false
Which figure has a greater area?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJsAAACLCAYAAAB2t+sXAAAG8klEQVR4nO3dXUiUCx7H8e/oWNbmLo5pLhGhYqs3Jd4oZW/kdKFp4RC9SEwX1YVgLL1dCHVjF0FEJ+oqYm66UTKCXY0ow9IoOFRIKnIykIrUpc2xLDXTnr2Q5Ih74JzOzP9p9PeBB3WeZ2b+g1+fx2GGeTyO4zgD4/BiBIYnYcJBJCK8HkiKh+zFsGwBeAY+O87PH9weS+a6gr+Ct2dk6oe/L4B//GWqRJFIGJ6EXz5B/zg8H4G4DxNTKxSaRFpS/FRXAB8nIW7...
1
science
grade-6
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 sizes.
"iVBORw0KGgoAAAANSUhEUgAAAkwAAACtCAYAAABC4yDNAAAUTklEQVR4nO3de3SNd77H8c/e0UjqukVcNqNEEJEe1bgcqloGEQm1XMdlaqnrcVvGKFarU6ql1Glrad3GqBjLZQzNoC4z1VJHO5VG6xakGeXQRG+5VEhIdvb5o5OcEvFLdCf7kvdrra5l7zz79/s+z/Pz7Wc/z45tcTqdTgEAAKBEVncXAAAA4OkITCjmiy++kMViue0/f39/hYWFae7cucrOzi7TeIMHD1bPnj3vq5ZTp04pLCxMtWvXvq/XA/ANntKXkpKS1L9/fwU...
[ "The magnitude of the magnetic force is the same in both pairs.", "The magnitude of the magnetic force is smaller in Pair 2.", "The magnitude of the magnetic force is smaller in Pair 1." ]
null
1
math
grade-5
compare-patterns
false
true
Compare pattern A to pattern B. Which statement is true?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABtCAYAAACbSxbqAAAeT0lEQVR4nO3de3zP9f//8dtm7MAYy2GMWWJRrEhJyWHfzDHCqPkQOcT3oyRUHz8rtUnxycrX4fPJN4l8KyqFnCN8rJOcmRwmMrMZM7PZwez3xzPb3jvY+z1ve4/u18vldfF+P5+P9+v9eO3S5dJjzz1ez5dTzpstchC5nYXtYdnq9Y7OQqTcCunW2dEpiIjcVlwI2wPhgY7OQ+Smuh0KiGWr1+s6ypHb6TpERMS+nB2dgIiIiIjI7UQFtoiIiIiIHanAFhERERGxIxX...
[ "Each term in pattern B is 4 times the corresponding term in pattern A.", "Each term in pattern B can be found by multiplying the corresponding term in pattern A by 3 and then adding 4." ]
null
1
math
grade-8
identify-functions-graphs
true
false
Which of these relations is a function?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAATIAAAE3CAYAAAApC812AAAb70lEQVR4nO3dbWxT970H8K+TOHZs8gBtHCoKxFU7cokLQQE7rBvCTNOWkmxjUsk2qZPKVolK9M2our4Ka7NW7VT6pmFs2i7pKm1a0NqhizU6Vau73U2J3SLcNeYm7dVsmHoJNhTnwY5jJzn3hfGxnYTwdI7P+dvfzxuOnXD8j+N89X8652eQJEkaTwH/mwCm5oE5CUREulZlAGorgYcsQFM1YBiflST/pNbNIiK6M646oOrTRObBfdXAJmsm5YiI9GxqHhiLA5d...
3
math
grade-7
bases-of-three-dimensional-figures
false
true
Look at this figure: What is the shape of its base?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAC6CAYAAACUcDp9AABRQElEQVR4nO29aZxdVZn9v5699zn3VqWGpJKQCiEDRCBMCTMyKSiCIDYqCK3YQCt2K07g2LaIA42NIw7dtv0H2+Fnozi1IyitLVPTiAOjyCgJBAiEhMxT1T37/2KP51YlkFCVSmB9/RR3Oufcc8/1xbora69HrLUWhBBCCCGEkBFBjfUJEEIIIYQQ8lyCAtvz8Dd+jv/5xhU4aMqMsT4VQgghhBCyHSOMiDje+VevxZd++n0AwJ59U/CnJYvG+IwIIYQQQsj2CB1sAP/...
[ "pentagon", "circle", "hexagon", "octagon" ]
null
1
math
grade-1
interpret-bar-graphs-ii
false
true
Frank went into the family garage and saw some rulers, flashlights, pairs of scissors, and tape measures. He made a bar graph of the items he saw: Which item did he see more of, tape measures or flashlights?
"iVBORw0KGgoAAAANSUhEUgAAAngAAAFfCAYAAADd1rEpAAB1LUlEQVR4nO3dd3hc1Z3/8fdt0yTNqFuSZUvuFTdhm2awHXqHQIghhRCCAyG0DYFNIMCGLAlZfjGwhFBCDBvYFLLUhG5caAb33m3ZsmXLaqMZTbvt94eMsMFNtqwZy9/X8/hB0+79nkHSfHTOPecoruu6CCGEEEKIbkNNdwFCCCGEEKJzScATQgghhOhmJOAJIYQQQnQzEvCEEEIIIboZCXhCCCGEEN2MBDwhhBBCiG5GAp4QQgghRDcjAU8IIYQQopuRgCeEEEII0c1...
[ " flashlights", " tape measures" ]
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?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACgCAYAAAA2PRuAAAAEi0lEQVR4nO3dv0pkZxyA4c/gkLFJJQvegbKNjVeSIheQ28gl5A4khWWa9BF22ywo0y3apUizsAMhlQP+mRQSyyUb3z0T9XmaM8Xh+35wpngZvsNsrdfr9QAAABJfbXoAAAB4TgQ2AACEBDYAAIQENgAAhAQ2AACEBDYAAIQENgAAhAQ2AACEBDYAAIQENgAAhAQ2AACEBDYAAIQENgAAhAQ2AACEBDYAAIQENgAAhAQ2AACEBDYAAIQENgAAhAQ2AACEBDYAAIQENgA...
[ "equal to a right angle", "greater than a right angle", "less than a right angle" ]
null
0
science
grade-3
classify-rocks-and-minerals-by-color-shape-and-texture
true
false
Select the rock with the lighter color.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAB6lElEQVR4nO39eZBk2XXeCf7e7vseHntmRq6VtW+AitgIEFxFtlqthRQ3cSQZ1WJzupvT5JiGf7T0R0uylkZjLWnUlEnW0phoYJNaKLZIGkiIJCASC4soFFBZa+6ZsS/u4bv729+bP+67NyMhIApUoUiQ8mNWllVZmREe7u/ce853vu87WpqmKfOYxzy+Yuh/2C9gHvP4Ro55gsxjHqfEPEHmMY9TYp4g85jHKTFPkHnM45SYJ8g85nFKzBNkHvM4JeYJMo95nBL...
1
science
grade-3
animal-adaptations-skins-and-body-coverings
true
true
Namaqua chameleons live in the deserts of southern Africa. The Namaqua chameleon is adapted to be camouflaged in a sandy desert. Which animal is also adapted to be camouflaged in a sandy desert?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOydd5gV1fnHP2fmbq9soSx96b0ogigoNkQJsRArasAaQ2zRH2oSE8WoEVs02LALJsYuRiMgRgWlIx0pS++wbGGXLXfm/P6YPnfu7qKrGDPf59mHe6ec854zs8v3fc/3fY+QUspoNIqu64QIESJEiBAhQoQIEeK/E4qiEIlEELW1tTIk9yFChAgRIkSIECFC/PdDURSUkNyHCBEiRIgQIUKECPHTgK7rKEfbiBAhQoQIESJEiBAhQjQeQoIfIkSIECFChAg...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOydeZwkRZn+vxGRWVXdPdMz3DAC4nAJciMKKKyIyCEiIILAiAIqLrIILvwG8AREXIZrwUEOQUBgV1EOh5XlkF0VFIEBZwEPVA4VYZFzZrq7KjMj4vdHHJlVXT3TAyPomo+flu6qPCIio2riied531dYa21RFBhjqFGjRo0aNWrUqFGjxt8mpJQkSYIQ4rVuSo0a/ycha+Jco0aNGjVq1KhRo8bfPowxFEXxWjejRo3/s5A1ca5Ro0aNGjVq1KhR4/8...
0
math
grade-6
similar-and-congruent-figures
false
true
How are these figures related?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAB4CAYAAADIUIXCAAAGH0lEQVR4nO3cz2tddRrH8SdSms2ot1RmBgqNuJpFIcniIgRFCkJbRUNAOxQXpeJWaBuk+A9IkdIUZjcw0AGlYguJitJSwQ4yLXI3udCFq5IWAlW6OP5YqFx63VhvI7UOnaf3e07P6wUXsjsPhMCbk08yMRwOhwEAAKR4qPQBAADwIBHYAACQSGADAEAigQ0AAIkENgAAJBLYAACQSGADAEAigQ0AAIkENgAAJBLYAACQSGADAEAigQ0AAIkENgAAJBLYAACQSGADAEA...
[ "similar but not congruent", "neither similar nor congruent", "congruent" ]
null
0
math
grade-7
similar-and-congruent-figures
false
true
Are these shapes similar?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAC2CAYAAADjsvoGAABHvElEQVR4nO3de1zO9//H8UddRUdFCg1JbUYKXzlviMqhZs6HHJvDhjnTELMcNocJc4jv5jybbc7LIcfYQUsbiiztV1gTFaV0Ply/P65EX2erPh1e99vNra7359DzY8br+lyvz/utpVar1QghhBBCCCGKhLbSAYQQQgghhChPpMAWQgghhBCiCEmBLYQQQgghRBGq0AW2p6cnn3zyidIxik14eDjt27fHxMSEBg0acODAgYJts2bNwtbWFltbW4YNG0ZaWpqCSYUQQgg...
[ "no", "yes" ]
null
1
math
grade-1
read-a-calendar
false
true
What month does the calendar show?
"iVBORw0KGgoAAAANSUhEUgAAAssAAAGvCAYAAACthZgKAABZr0lEQVR4nO3de1yUdd7/8TcDIh5Bzp4FT3hAVDRFJMo0VNLKzF2t+3ZLKzv92tvWctnttK15l9VutlvuvVmmZpq6KWqGhxYURdcjnjAPSIqIooiKIKAzvz+MUYJLB2UYBl/Px8OHOtfM8JkP11zznuv6fq/LxWKxWFacOak1uTnKLLokAAAA3L4WdT000NtPsT4Bji4Ft8Fl+elsy5GiQj0S0Ex1XE2yOLoiAAAAJ+ciqeSKWYuzjyuobn3F+hKYnZVpTW6ORgY0kxt...
[ "June", "July" ]
null
1
engineer
grade-6
evaluate-tests-of-engineering-design-solutions
false
true
Which of the following could Preston's test show? Preston wanted to build a bridge across a creek. The bridge needed to be 3 m long and able to support 150 kg. Preston was not sure what type of wood he should use. He found affordable boards made from either pine or fir. But he was worried they would break too easily. S...
"iVBORw0KGgoAAAANSUhEUgAAAUwAAAEICAYAAAA0p80lAAEAAElEQVR4nOz9V69s65rfh/3ekXPlqpnDynvtdFKf0H1Od4tUk2w0RZmETSvcG4QbggkJvvMHsC9MGBIgA4IBQwZsQCLQBpsWRYHdrQ48fdLe++yz88prpppzVq6R8/DFWN3WJ+CWAb4382bOqllj1Pi/z/s8/yB+//d/v+Hfrn+7/u36t+v/j9Y/+Sf/5Gt5XwVAmfzXTHZGUBasVnOQJRabhMPTCReLW0Y7+7y4vGJ3t08Qrsh8OD0CDZB0jeeXOTcbODq2UdSK9SZ...
[ "if a pine board would support a 150 kg weight", "if a pine board could support more weight than a fir board" ]
null
0
math
algebra-1
domain-and-range-of-square-root-functions-graphs
false
true
What is the range of this function?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABqRklEQVR4nO3de3xU9Z0//teZa+6ZkIQkBBJuggYTbgJyEyxWrVotWIvt1mrXXWu3Vrff76/77Xe/rdvt+nX7bbft1tWuX3ddL932a2WLtoIBURBooiARggkIMUAuhFwmmZnM9dx/f8REIrcMnA8nk7yef+gjJzkv3jln5sxrTs7MSKZpmiAiIiIiIks47B6AiIiIiGgsYcEmIiIiIrIQCzYRERERkYVYsIlomNLSUtTW1g59ffz4cRQWFqKlpcXGqYiIiFIHCzYRDVN...
[ "$\\{y \\mid y \\geq 1\\}$", "$\\{y \\mid y \\leq 0\\}$", "$\\{y \\mid y \\geq 0\\}$", "$\\{y \\mid y \\leq 1\\}$" ]
null
2
math
grade-2
correct-amount-of-change
false
true
You pay 70¢ to buy a ruler costing 60¢. You receive the following change:Is this the correct amount of change?
"iVBORw0KGgoAAAANSUhEUgAAAgwAAAA8CAYAAAAKY+KLAAAYKElEQVR4nO3daXBd5Zng8f8595xz9ytd7ZIlWZK1mLaxwYAXNgPBhkB3T0NCAgkhZKmeGaoGUpWempqpSmVIT/pLpqcz6aT7A1WpFNPNJHRXNxgaMNgBAwkxlm15w6tsrb5a7qK76S5nmw9XurFjY7NYk+7y8/viKtc9Oq/eL/fR+z6L4rquixBCCCHEJai/7wUIIYQQ4l8/CRiEEEIIcVkSMAghhBDisiRgEEIIIcRlaUv9gmKxiGWZ5PN58vkcmqZTKhZQFBWf30e...
[ "yes", "no" ]
null
0
science
grade-5
use-scientific-names-to-classify-organisms
true
true
This organism is an axolotl. Its scientific name is Ambystoma mexicanum. Select the organism in the same genus as the axolotl.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOy9eZxcZZX//z7Pc29V9d6d7iQkISEbYQtbWGQREJEBhEFRFBUVwRkdUUBwxGXmp+KC+4LICIIIIoLiMoI6ioCIbAYCJGFLgOz73mst9z7P+f3x3KruThBF4+jwvW9fLd3VVbfuVp1zzvM5nyOqqmma4r0nJycnJycnJycnJ+fvhzGGKIr+um3kwX1OTk5OTk5OTk7OPwbee9I0/au2YfLgPicnJycnJycnJ+cfh782Pjc7aT9ycnJycnJycnJycv4ByAP...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA6IAAADZCAYAAAA69Y0YAAEAAElEQVR4nOy9e5wlZXX1/937qTqney4MdyOEqKAgioggarxgkBBRCfGCtxBFyfvqKyqoecVL8lMxiRqNRkWieIWgwcQkvkJiIopRgzcUlAGjoIKIiEYuMjPdfc6pevb+/bGfqu5mEEHHS0wtPyPT3efUqapTp6fWs9ZeSwBnwIABAwYMGDBgwIABvxL4wk3OPmthffpF78mAAbA5w2ULcO0MdqjgwdvH9/UXulcDBgwYMGDAgAEDBgzYphhI6IBfJqxPcU0CbMn...
1
math
grade-7
perimeter-and-area-changes-in-scale
false
true
Look at this rectangle: If both dimensions are quadrupled, then which of the following statements about its perimeter will be true?
"iVBORw0KGgoAAAANSUhEUgAAABEAAAAOCAYAAADJ7fe0AAABT0lEQVR4nM1SoarCABQ9Prcgsg0sBpdsii76BatDMS6YBX9gPyBrBotFBDcWLToUzILBIJhlsLpkcgxk5wV58tTHw4flnXbvPfdw7uFmSBJv4uNdgZvIbrdDo9GALMuoVqvwff9HsuM4UBQFlmXheDxis9lcB2maUlVVuq7LNE05n8+Zz+cZxzEf0W63ORwOSZKDwYC2bZMkcT6fOZ1O78i5XI5BENz1+v0+JUmiqqrsdDosFAosFou0LIv4TkyShKPRiPV6nZfL5cl...
[ "The new perimeter will be 4 times the old perimeter.", "The new perimeter will be 2 times the old perimeter.", "The new perimeter will be\n1\n2\nof the old perimeter.", "The new perimeter will be 3 times the old perimeter." ]
null
0
math
kindergarten
represent-numbers-with-shapes-up-to-3
true
false
Which group has 3 stars?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAIK0lEQVR4nO3dMUwbZxjG8ec429jm3DJErbN5sFtGyBKWRIwuUiQmwmgliyfoGCkZE4U1EqxV2JKhEkokmrGCJcqQMDohQza7SgYUjGMw5joYp4aejfGduXvfe35LhEjMffEffx/njzvDtm27cgh8rAF7TeDIBlHgRAwgZQK5JPBzDDAqB7b95qvfh0XUv+s/AJGdWuuDqzHg17FW1URBs9cE3u8D5UPgQw0Y+XrU+gSjpSBLma1GAaDaBEaaHZ8gCrJ2ow0bGPH...
0
math
grade-1
match-analog-and-digital-clocks
true
true
Look at the analog clock: Which digital clock shows the same time?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABPy0lEQVR4nO3deViTd7o//nfYAigkKIu4JeAKWolLXStLrd2sil1mpit4Tpc5c9oZnJnOnDkzHXCWM785nTNi23POzLT9SrdpT6dW1NpFa424FWsxaAWxAsENESwJKCSE5fcHkrJk+SR5QgK8X9fF1ZB8nid3kVzc+eR+7lvW1dXVBSIiIiIikkSArwMgIiIiIhpOmGATEREREUmICTYRERERkYSYYBMRERERSYgJNhERERGRhIJ8HQD5nqWtAxZzO9rM7Wgzd6DN3A6...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA5oAAAEJCAYAAAD1mFhPAABaqklEQVR4nO3deViTd7o//nfYAiokKKuKCbgCVuJSUWxZam1trRXHbbqKc2o7Z77tFKftzG++My3YmTnzm+nMiG3nnJmxPdJtWlsX1FpbrRVRsViLQVnECgRBEcGSgEJCWL5/IClbkicbCfB+XVcukyef5/PcQNLmzv1ZRJ2dnZ0gIiIiIiK7EIlEzg6ByOncnB0AERERERERDS9MNImIiIiIiMiumGgSERERERGRXTHRJCIiIiIiIrtioklERERERER25eHsAMj...
1
math
pre-k
addition-sentences-up-to-5-what-does-the-model-show
false
true
Which addition sentence does the picture show?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABUCAYAAAC4PkCPAAAPmUlEQVR4nO3dS4xcVX7H8d99Vd16dbdp27TdtJvwsEGEIYORgAWwiMREzEgQDRolq6AgzTKzzCKKSBQpM1kmixFLokhkNbOKIs0omihiwhAlgjADZMDmYWy38aPd7q7Hrap7654sym237abd1b73VnWf70dC0MWtc86vJaS/D+f8r2OMMQIAAACQCXfcCwAAAAD2EgpsAAAAIEMU2AAAAECGKLABAACADFFgAwAAABmiwAYAAAAyRIENAAAAZIgCGwAAAMgQBTYAAAC...
[ "1+3=4", "2+2=4" ]
null
1
math
precalculus
outliers-in-scatter-plots
true
false
The two scatter plots below show the same data set. Choose the scatter plot in which the outlier is highlighted.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAU4AAAFGCAYAAAAFAHYEAAAsjElEQVR4nO3dfXRU9YE38O/MkEwI8wIDhAIGcnQCm9SIEjIhEs8jakdP1bNPfVSCq7YmtrVxgbg9Wt1DD1nWpWcKyyoCVU5r1md304L4hsopdV1oFgjJcFJoSFAmLHlAsElgSMKFzEuS+/xxncnbTGZuMnfmTvL9nMNJ7m9u5v4mypffvb83jSiK4l98QMsN4Fof0CuCiIgGmaIBjDogOx2Ykwpo/uIVxfruRFeLiCg5FJqAKa4b0sHcVGDxNClViYhowLU+4Mv...
0
math
grade-2
find-the-next-shape-in-a-growing-pattern
true
true
What shape comes next?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADhCAYAAAC9ZMGZAAAY3UlEQVR4nO3dS2wd133H8d/MnTv3kqJIiY5lyg8lrtSkUVREMmwHteUYzauGAzhAYiBZBGiLpEBSZNO0qzZB0cb7rgt00UULJN0lCzdwWwOOZcsPGZYdS3JsybJli6EkixKfl3eeXVCUSImP+5qZM2e+H8CAIXLmnP85M4Mfz52Z66RpmgoAAACAFdyiOwAAAABgcAj4AAAAgEUI+AAAAIBFCPgAAACARQj4AAAAgEUI+AAAAIBFCPgAAACARQj4AAAAgEUI+AAAAIB...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAz4AAADhCAYAAAAJS2C/AAAdLklEQVR4nO3dW4wc153f8V9Vd1f3NIcz5MiihqJEWyGzF5qBJUPSIrJkI17bK3gBGVgb2H1YIAm8AdbBvsTJU2IjSOz3PAfIQx4SYJ233QfHUBIBWo5EUaIg0hZJmRJFaUSOhqQ1VPfMdE/X7eRhOOQMOZe+1OVU9fcDGLA401Xnf6pqun51qk45xhgjAAAAAKXgOE7eTbCSm3cDAAAAACBtBB8AAAAApUfwAQAAAFB6BB8AAAAApUfwAQAAAFB6BB8AAAAApUf...
0
math
grade-8
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?
"iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAAdD0lEQVR4nO2deZxdVZXvv+uce2tOqkhCIIgkQWUwkoEaAhhSFRD9ICq2yJSAw0NUbKdWP4K+tp36+Z6+bm1bWhsbnIA8DPjQVrCRoarCoKmBhAiKA0rEF8hAhqq6t4Z7z17vj5t0Q8xQw97nnHtrfz+f/JNP1Vqrzr2/s6e11wKPx+PxeDwej8fj8Xg8Ho/H4/F4PB6Px+PxeDwej8fj8Xg8Ho/H4/F4PB6Px+PxeDyVjyQdQCWj9yyup6bqUlQuQzkVqLFkegThlyj...
[ "1\n8\n of a full turn", "1\n13\n of a full turn", "1\n7\n of a full turn", "1\n9\n of a full turn" ]
null
3
math
grade-1
select-three-dimensional-shapes
true
false
Which shape is a rectangular prism?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAXy0lEQVR4nO2d708bV7rHv2PP2B7D2GATww0JPxIIdJMo6RXZ5qbRJlIqbbW9q676Zld91X+tb/bHm2qzu61aaSs1uUmTu0QKudAWAikGQtZQbLAHPB7P2HNfHJ+xjQ1lbI+Zsc9HqqqQ2B7sj595znPOeQ5nGIaRyAMrWUAuALoBBsNx8BwgeYHJIDDoA7iEahj/ypz2ZTEYJ+edEMAvZ8kf/sMHTPUQqxkMpyEXgKUD4N954GUW8GR08hdMWoaTkbzEUQDYLwC...
1
math
algebra-1
special-right-triangles
false
true
Find w.
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADyCAYAAAB3e7J8AAAm90lEQVR4nO3de3RW9YHu8Wfv9xaSQBLIRWNCIDiBoMhFcghR6mXEOqdqBdE1AqeDRbzMaHS1PdbRdbS2ii57OhVwWQZkZFrBcYm2tfZ0VdBqUQJNFILKTWGERJRwyYVA8l73+WMbEi6BXN681+/nH0Fewn4Dfzz55dnPNizLsgQAAAAgLMxoXwAAAACQSAjYAAAAQBgRsAEAAIAwImADAAAAYUTABgAAAMKIgA0AAACEEQEbAAAACCMCNgAAABBGPQ7Yd23za3cbz6Q...
[ "12 centimeters", "$3 \\sqrt{2}$ centimeters", "$6 \\sqrt{3}$ centimeters", "9 centimeters" ]
null
2
math
grade-5
reflection-rotation-and-translation
false
true
How has this figure been transformed? It has been...
"iVBORw0KGgoAAAANSUhEUgAAAPoAAABkCAYAAACvgC0OAAAEyElEQVR4nO3dQWgcZRjG8TeSpq1UXJNKTbEsQYL2FFroRbA78eLFk97iZddrQfAieBAmCAq9CJ6F3YMlniSoCF4SE6UIoq4gNFI8LJU0wUQ3xibd7OHzEGPazGx2dnZ29515/z8IgdnZZ6Yz35Nsk+XNUKFQcJ7nSRKWlpbEOSfkxc9bXFxMJGvQPM9TfZ2t5Q17nie+7ycSODs7K8458rrIywrWla68RxJJAqAaRQcMoOiAARQdMICiAwZQdMAAig4YQNEBAyg6YAB...
[ "translated", "rotated", "reflected" ]
null
2
math
grade-1
square-corners
true
false
Which shape has 2 square corners?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAEaUlEQVR4nO3bS04UURiG4b+bywBBZ14W4GUH7MBluAwX4SLcg1OX4MwZiHObKQ2dgHTKQaUSL0CQrvP9l3qfkYSEVJ16zzdz1nVdt7gy+74yW67NrjsDNrY9MzvYMnu5Z/Zs12y2uOy6L2fej4XKDh+bbZ+s+h9e7Jq9ftRXCGxquTY7vjD7cWX2bWU2P7vuf0FkGNPBVt+Umdn52my+/u0XwJiGpn52ZnPfR8FUEBokCA0ShAYJQoMEoUGC0CBBaJAgNEgQGiQ...
0
math
grade-5
scalene-isosceles-and-equilateral-triangles
false
true
Is this triangle equilateral?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADOCAYAAAAEw3WqAAAoSElEQVR4nO3deUDUBfrH8ffIpTnF5AEeKEaKTR5lyW7bQRq2ayUdmll5AIqp7ap4txhqqWhohkdbZogimYj4S620LKNL1rLURUXNI89QFLkUZRjm90cbu22mHMMMx+f1nzjw/Yz1x+PjM89jsNlsNkRERERExC7qOTuAiIiIiEhtUlpgBwYG0qRJE6ZMmcK5c+ecmUlEREREpMYy/DIicv3111NQUADAddddx+DBg5k0aRI+Pj5ODSgiIiIiUpOUdrCbNWtW+sWLFy+...
[ "yes", "no" ]
null
0
science
grade-8
identify-rocks-and-minerals
false
true
Slate has the following properties: dark-colored found in nature solid no fixed crystal structure not a pure substance not made by organisms Is slate a mineral or a rock?
"iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAABINklEQVR4nO29WY9c15Uu+J05TowZkZHzyExSpEiRklweqsoql2tCAV0o1PNF/6vu+1hvjQYa91ajge6+/VIPnn1tWbYkyxTFMZPJnDPm4czDfdhn7dgnmAzKpiWyy/sTBJKZEWdc317z2kqapikkJCQuhfq6L0BC4k2GJIiExAxIgkhIzIAkiITEDEiCSEjMgCSIhMQMSIJISMyAJIiExAxIgkhIzIAkiITEDEiCSEjMgCSIhMQMSIJISMyAJIiExAxIgkhIzIAkiIT...
[ "mineral", "rock" ]
null
1
math
grade-5
classify-triangles
false
true
Is this triangle isosceles?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADTCAYAAAC7i2TvAAAdBUlEQVR4nO3da3SU9b328SuDY2ZishKroU0LUiGSkIQAIojwtLrLXqtddlG0WrdUi6gIVJCDHBRRhA2iASKnjbIptmpXbakHDrbiQzf6iDsopIjGEMJB0EQIMUESEzKJQ2aeFzRDQg7kMHP/70m+n1c0TOb+8e7y7u/6/yP8fr9fAAAAAILCYXoAAAAAoDMhYAMAAABBRMAGAAAAgoiA3QZz585VYmKiEhMTNXbsWFVVVZkeCQAAADZDwG6l1157Tdu3b1dOTo4OHjw...
[ "yes", "no" ]
null
0
science
grade-8
compare-magnitudes-of-magnetic-forces
false
true
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes.
"iVBORw0KGgoAAAANSUhEUgAAAfQAAABwCAYAAADogILwAAAdlUlEQVR4nO3de1RU19n48e8wMAwwgBhBQQRURBQ1KIIaTbxrTbSxRpM0mkSb+NMmscukdrXrbZqV65smtWldTd+ayzIxxmi0ibze8sYEvN9BREVFQEW5KYThzgAzzO8PCtEoMDPMneezVv5g5px99pg985yzn32eozAajUaEEEII4dI8HN0BIYQQQnSdBHQXdvr0aRQKxW3/qVQqYmNj+cMf/kBNTY1Z7c2fP59p06ZZ1JezZ88SGxtLjx49LNpfCCFE13g6ugOi695...
[ "The magnitude of the magnetic force is the same in both pairs.", "The magnitude of the magnetic force is smaller in Pair 1.", "The magnitude of the magnetic force is smaller in Pair 2." ]
null
2
science
grade-3
identify-properties-of-an-object
false
true
Which property matches this object? Select the better answer.
"iVBORw0KGgoAAAANSUhEUgAAAKwAAADQCAYAAACa0YpiAAA9wUlEQVR4nO29eZgdV33n/am6a/fte2/vm/ZdsmXZ8r4joxgTFOzY2MSBgTBmQjx5JxMGZ8jDJCExcYZgHvKGJzgvjt8kzBjzEJMJwQYMhBgvGC+yZFu71FKrWy211Hv37eXuVfPHr6rr3Oq63S27W9I19X2e6rpddarqVNW3fue3nXM00zRNgEwmw+nTp0mlUhQKBXz4ON8IBoMkEgna2tqIRqMAaKZpmul0mmPHjrFixQqi0SihUOg8V9WHD8jn82QyGbq6uli3bh3...
[ "yellow", "rough" ]
null
0
math
pre-k
cones
true
false
Which shape is a cone?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAXZUlEQVR4nO2dX2wTV77Hv2n+OcGxzdrOH7BJqGxDdkGZBpa9RNBSgnSblmqh0obtviR0H/b2StvSZXUfgq4apAsrXaksdFfq9qGQPC2bSrfpJht6dQmbFghXWUgcgTbEziUOk2yC/yj+V8fOH+U+TM4kjp0SyIxnxj6fl4TxMD7x+fjM7/zm/MlaXFxcnJoFRiJAaAGYXwSFIjtysoCibMBaCJTkAVlTscXFvqDUxaJQ1s+PNECOM8L9oywP2LGJs5pCkRuhBWD...
1
math
pre-k
represent-numbers-up-to-20
true
false
Which picture shows 7 dots?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAQoAAABICAYAAAAOLLsaAAAE4klEQVR4nO3dv08bZwDG8cdn4NzDAUdBBuIUM9BWmVspW+YmUoeke/O3lb1FaqWmM2PEXpEw1IhrbJcISMzbO5vzdbicG2iV9wyvISnfzxJ+iPPXyyNs7DelNE3Tdl/aMdKbRDpJBeCamypJN8rSZ4G0OCOV2nGaPnt91VkAPlT35qSpFyb7ZHlG+mI2WxEA19ubRNo+ll72pedG8l6fZN9gJADkbpSzTZCkXiJ5yTvfAIBcvgmDVPKuNgXAx4ChAGDFUACwYig...
0
math
grade-3
read-a-calendar
false
true
What day of the week is June 11?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAF2CAYAAAAbcOzWAABXS0lEQVR4nO3deVxU9f7H8RcD4i6ILG6ZKCpaRErmgkSZ5oK2mFl6LUtNLbW6lualLPuZedPqlllZt8WlzDUTNUOxCwqpqSjuKxoS7oiJyObM7w9jEkEdlGHg8H4+Hj6EOWdmPvPhzMx7vud7zjhZLBYLl4k4FMvPv6/nSPoJREREROTm3VLNm663tuVB3w6OLkXKAafLA37EoVgS//yDf7TojGuFCliwXOu6IiIiInIdTjiRnZPDd7tW4Vu9Lg81CnF0SWJwpst/+fn...
[ "Friday", "Saturday" ]
null
1
math
pre-k
addition-sentences-up-to-10-what-does-the-model-show
false
true
Which addition sentence does the picture show?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABUCAYAAAC4PkCPAAAQ+ElEQVR4nO3dW2wc133H8d85c9kbl1xSEkXKqixZF7uBLClN3QBVIMNx4CJALk1bwPVD0ofmwUGKokiBtuhT+lL0uX1ojb4ULYoEBdqicAsYRp6CGC2QOk7V1JBDy5ZpSxSXkrXkXud2Th+Wy4tE0lxy5szs7O8DGBDWy5n5YgHun7OzZ4TWWoOIiIiIiGIh0z4AIiIiIqI84YBNRERERBQjDthERERERDHigE1EREREFCMO2EREREREMeKATUREREQUIw7YREREREQ...
[ "5+3=8", "4+4=8" ]
null
0
engineer
grade-6
evaluate-tests-of-engineering-design-solutions
false
true
Which of the following could Barry's test show? Barry was a mechanical engineer who was designing a weather station to record temperature, precipitation, and wind speed. The weather station would be used in a town where the highest recorded temperature was 40°C. Barry wanted to make sure the weather station would work ...
"iVBORw0KGgoAAAANSUhEUgAAAUwAAAE3CAYAAADBi3hdAAEAAElEQVR4nOz9aZBl6Xnfif3e5Wx3v7lXZe1LV/XeDTQaYAMkSEBcJJHiMEYSOQpJtuyYsMKKsT3zxRH22JLDE4qxxzETDtszGlGS9cEeSyJFjUiCAIiFAEisDfS+VHV17ZVVud/93rO97+sP52RWVnV3VQPZhapG5z+i4uatzLOf85xn+T//R/yDf/APHHvYwx728CHCf/1f/9f3Zbsa4M+Xf2lXK7Hizr937s42WYi7rGCXuNv67/bGuOvyuzy+e338d4MQapfL7/b...
[ "if the weather station would work when the temperature was 50°C", "how well the weather station would work when it was windy" ]
null
0
math
algebra-1
identify-direct-variation-and-inverse-variation
true
false
Which table shows direct variation?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAdwAAAA/CAYAAABKBHltAAAOsklEQVR4nO3ce1SU9b7H8fco6hgXcQOmpAaIgAKmgreWCKIiKrBiqShddIUZKZKm/aHlJo+YF5B9DEw0V3jZeQkQKo51aGVqYJ5Va8y1kYCjrVJkD26IyQsgmD7nD7ZzREmtHuZx4Pta6/ljfs/P+X3Gr+N35rmMLt03S0EIIYQQ7coGIPHwi1rneGgZM3aReMZ68nZ2GX5SL2si9bIuUi/r0kXrAEIIIURnIA1XCCGEsABpuEIIIYQFSMMVQgghLEAarhBCCGE...
0
math
algebra-2
find-inverse-functions-and-relations
false
true
The graph below shows a function. Is its inverse also a function?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABlrklEQVR4nO3df3hU9Z33/9f8yu+EhAQSBBNEIRoEBAUFQXGx1aq1BbeL7d1te6/dXbt17Xavu99v79699trt5de7++3V7ta7dtvudqu9v7t3t15Ft4qBYkHBICIRggkIiBASID8mmSTz+8zMOd8/YiIRkATPh2Hg+bguLp1JzivvnDNz5jUnZ2Y8juM4AgAAAOAKb7YHAAAAAC4lFGwAAADARRRsAAAAwEUUbAAAAMBFFGwAY/yf//N/1NTUNHo5nU7rscceUywWy+J...
[ "yes", "no" ]
null
0
math
algebra-1
compare-linear-functions-tables-graphs-and-equations
false
true
Function A and Function B are linear functions. Which statement is true?
"iVBORw0KGgoAAAANSUhEUgAAAjcAAAGlCAYAAAAGbtd7AABXfklEQVR4nO3deXhTZdo/8G+SJm3atBQKLYXS0sqwKEgZkRZZKiCCOsy4sIgO4jLizxEVxmXUecXRd3RcYFBH0RcVNxiXDg6LgzBjlRHFUjegqBQhLbaUplC6pdmT5/dHJ5HQJWnPSU+Sfj/XNRfT5Olz7sQ7T++c+ywqIYQAERERUZRQKx0AERERkZxY3BAREVFUYXFDREREUYXFDfWo5557DiqVqsP/XX755UqH6Gfo0KFQqVTYtGlTj2972rRpvvdly5YtPb59Igr...
[ "The y-intercept of Function A is less than the y-intercept of Function B.", "The y-intercept of Function A is greater than the y-intercept of Function B." ]
null
1
math
grade-3
match-clocks-and-times
false
true
What time does the clock show?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABhCAYAAADsidaRAAAIKElEQVR4nO3dvW9b1xkH4FdG0yUxiRRI0BbmYGRoa961LaopCPqhrNHX3NbsKirNFKBSKc+xJCCbnT10JK9WPmb9BZdei5pekgBFKKMIYiVmB1eKrcg2eXUoWpfPM4nwue99BXn46eDVOVP9fr8fAABAEufG3QAAAJSJgA0AAAkJ2AAAkJCADQAACQnYAACQkIANAAAJ/WjQhUv5ftz7dpStMImy81Px9msD/zcEAHju2cEGAICEBGwAAEhIwAYAgIQEbAAASEjABgC...
[ "three fourteen", "three forty", "eight forty" ]
null
1
math
pre-k
select-solid-shapes
true
false
Which shape is a cone?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAWk0lEQVR4nO2dWXBb53mGXwDnAMS+cae4iasobpYUy7LlyLE9dpq2iW8ynkndTqbTJjOdqTvTTmfaaafpRXrTaaepk9aJd0WW48S1LVOSJYoStVuyIslaKFmkFgIkIIE7QQDESqAXZyFAUhSXA5wF/3Nj6wA45xP18MNZ/v/9ValUKuWLAXdmgcAckEiBQJAclAowa4AGA1CiBVS+aCp1YUbssgiElbPdAlC3Z5k/lGmBJiNjNYEgNQJzQH8IeBADBmYB9UyCeYF...
0
math
kindergarten
different
true
false
Which is different?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAFdElEQVR4nO3dz08TeRjH8c/MdIZSptSYAtIIkgC78aBRlBjjSU3kYuLNv9PEePBCuHigVgkmTXSl2gQDVCBQ+nvamdlDYZdVlt+d+T7zPK+EA6FJv8x7fnVm+KL5vu9vOMBKHai4QMeHiJCYBiQNYDoBjFiAttHy/exe2MMSQXgwCMS+1rvfjFrAnwPdtUFER8UFvtSAdQf4qw7oe53uDyR2NCWNblsAqLqA7h76gYimg7ZtH9DDHYoImgRnRoIzI8GZkeDMSHB...
3
math
pre-k
represent-numbers-with-shapes-up-to-3
true
false
Which group has 1 star?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAFJklEQVR4nO3cP1AcZRzG8ef4m4mHSeEISYONXkmD0OmYQiqh0wInZUYbraSz0c7GsbPRyiqpiI02YcbOmAYrj9jQkMtoQTjCAHKzFm92cgPLcbu8x95zfD8zDHcD7L3Fd3Z/s/dylSRJksah9Pee1GxJR4mAvjNSkSaGpTevSpNjUqVxkCQPd8peFtC9+Velkcd74cmNMan2Sqga6DfNllR/Lj05lDb2pKGdo/ADokU/mxgOjUrSbksaarX9AOhnaaP/JdJQuUs...
0
math
algebra-1
domain-and-range-of-square-root-functions-graphs
false
true
What is the range of this function?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABcmElEQVR4nO3df5RU9Z3n/1d1VfXvn3RDN7Z0IyIo2A2iqCBEHIw6mphAJovJyQ/nOJsxG5Ns/sh+c2aT7Mwcj5uzM8l845ps1t1sNHtmv9l4omYEG4KKQJoI0kJDN4ptC/0D7B9Fd1fX71tV937/wO6hBaQL7oei4Pk4x+Opou6r331v1a1X3b5V5XEcxxEAAAAAV+RlewAAAADgckLBBgAAAFxEwQYAAABcRMEGMEV9fb127do1efnIkSOaOXOmenp6sjgVAAC5g4I...
[ "$\\{y \\mid y \\geq 0\\}$", "$\\{y \\mid y \\geq 1\\}$", "$\\{y \\mid y \\leq 0\\}$", "$\\{y \\mid y \\leq 1\\}$" ]
null
0
science
grade-8
identify-the-photosynthetic-organism
true
false
Use the evidence in the text to select the photosynthetic organism. Painted nettles combine water and carbon dioxide to make sugars inside their cells. The painted nettles can use these sugars for energy. Planthoppers are insects that get sugars by sucking nectar from plants. The planthoppers can use these sugars for e...
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAp8AAADOCAYAAAB4pWlzAAEAAElEQVR4nOy9d7wsVZX+/d27quPJ8eYc4JKDBEHEgBEDjhGzmEYHA46KYUyj45gdQcSAEWXArKgoZlEk58zl5nhy6tOpau/3j70rdfe5iYv4/qYePk13V1ft2hXO7aef9ay1xP9uqejH9GboyQhSpEiRIkWKFClSpHgkMF7X3DRWRzw44+uUeKZIkSJFihQpUqR4pDFe14iRqtKP9kRSpEiRIkWKFClS/N+AG3/z6QvnIYRACKOESqHte8NPHSGRUuK4wjwjcBw...
1
math
grade-4
multiply-unit-fractions-by-whole-numbers-using-models
true
false
Which model represents the product 9× 1 5 ?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAANwAAACOCAYAAABaHGZ9AAAEyUlEQVR4nO3dv08bdxjH8Y/51cok7QJUFYxuqyyWUCKxsbVblyxZyID/gG6IJZ3g74DB/gvoVk9ljIKieEvjJQMqUJZCbPHLug6nizqgU31+/EHyvV9LgpCenL6P3jrJ8uUqSZIkJzdSty9dDqS7RACCzFSkx9PSd1XpmzmpcnKdJK8vHvqygMm39pU086Gf/vDtnPTDfFojgBiXA+l9T/rrRvqzL01d3KW/IDYg3uPptC1J+jSQpgb/+QWAeFlbt4k09bCXApQ...
1
math
grade-3
fractions-of-a-group-denominators-2-3-4-6-8
false
true
What fraction of the shapes are triangles?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACUCAYAAACp1l47AAAapElEQVR4nO3dTXBTd5rv8V+sF9uSJUt+I/ELyG0GBptNbg0YbjXV3Fs1SVVmNwlJlj3DJIswi6YhqbpVtyqTbWhC99wbFjeB7b0D6WXSlZ4qwvRQbWymJrNAZpqGttKWIe03yZIlbEsWd2HkQMDoL/ucoxe+n13KOuc8/1+lSg9H//Oc5+7fv39fAAAAACzRUOkCAAAAgHpCg426djeZ191kvtJlVD1yAgDAOs+xRQT1Kr1U0GsfTUmSPvtpjwJN/HvyScgJAABruSt...
[ "1/8", "2/8", "7/8", "3/8" ]
null
1
science
grade-3
identify-minerals-using-properties
true
false
Select the one substance that is not a mineral.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAANcAAAEGCAYAAAD2aACLAACDpElEQVR4nOz9edCt2XXfhX/W3vt5nnPOO925b4/qVktqWdZsS7ItTH62EjkgGbBD4nIAO5AUQ+JUDIEqIKmiqKQwRSpQhAo2GIgh2MaBVJxAsGOX8YBdRoMTWbIlS2qp5+4733c+5zzP3nv9/lj7ec553/ve7tvDtbs7Z90697xnesa99l7ru75rLfnMjupja7DhWclKVvIKZC/Blw/ghRZOB/hnTtn7bqVYK1nJq5MND4+t2d/7afG+WynWSlby6qXXo04X77k...
0
math
kindergarten
represent-numbers-up-to-20
true
false
Which picture shows 8 triangles?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAcwAAABcCAYAAADjyoVxAAAHwklEQVR4nO3dP1NbVwKG8Ve6Ehb/tMIIIhzIBhKTGXdbZWZnP8BusfV+jXwCtkwDTdyFjO0WNtWmgD6JCrsAZpIwXkyRqEBkd5IxljwTMKMtrq8CsdA9ku69556b5zeTCTaKOE/1wuhE5DqdTqd5Lj17Kb24lF51BADA714hJ0170t0J6a0xKdf8pdN5fGb7WAAApNeHZalw9NL/w8KY9MGkv6YAAPzevbiUnralk3PpPy+l/Nkr/xOMJQAAv5r2/G2UpNallL+...
0
math
grade-2
match-addition-sentences-and-models-sums-to-10
true
false
Which shows 7+2=9?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAdoAAABKCAYAAAAc9ZVYAAANjElEQVR4nO3dW2wcVx3H8d85c9m7vYnT4iQ0rZomJS2FFkTTFnirgHKTEGqpqqriCQkBQhWCN154AAkeuEo8wwNXIQSFwjO3lggkJChV3BBELo5zcWp7r3M7h4exE6+92d3ZnbOenf4+UtUkXs/s12PpvzuzMyO01nrFB860gUYEhBpEREQ0JlsANQs4Vgbe5AJixdP61MZePy0iIqL8OTkH2K+1478cdIF7K/EUJiIiovE0IuB0C7jkA0ttQG6E8Rc4ZImIiCZ...
1
math
grade-3
lines-line-segments-and-rays
false
true
What is this?
"iVBORw0KGgoAAAANSUhEUgAAAG4AAABuCAYAAADGWyb7AAAEZUlEQVR4nO3czU4bVwDF8ePBhtjYvmMnEWmTgpRGSWxwoiqLLqBZsmn2lfoGyQu0j9AXiFR1X+UBmm7YVEph11YqX6GRgmSREmiQPWMbG2zwdDHYJGVMCCUmx5zfxgvfgYv+unfmyhYhz/M8CB3rtCcgx6NwpBSOlMKRUjhSCkdK4UgpHCmFI6VwpBSOlMKRUjhSCkdK4UgpHCmFI6VwpBSOlMKRUjhSCkdK4UgpHCmFI6VwpBSOlMKRUjhSCkdK4UgpHCmFI6VwpBS...
[ "line", "line segment", "ray" ]
null
0
math
grade-7
describe-a-sequence-of-transformations
false
true
What combination of transformations is shown below?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEyCAYAAADA5Kd8AAA5I0lEQVR4nO3de3zO9f/H8ec2O9jBcpjZNcOcGYbNJpLUQlK+Fb6+FN9I0jnppIQU6aRzIh0o3wg5RfykA/kaG2aMOW9r1zBj5/N2/f4Y17e+33K8ts+1XY/7P9l1+Lye2tXtel6f3tfn7WSxWCwCAAAAYBPORgcAAAAAapJaRgdA5XjjuwclSSN7TVLDOo0NTgMAAOA4nM4vEUlLS5PZbDY6D2xkbtwj1j/3CLxLHRrcYFwY4DKZTCaZzWaFhYUZHQUAgMtmPYMdEBB...
[ "translation, then rotation", "reflection, then rotation", "reflection, then translation", "translation, then reflection" ]
null
1
math
grade-5
multiplying-fractions-by-whole-numbers-choose-the-model
true
false
Which model represents the product 2× 1 3 ?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAANwAAACOCAYAAABaHGZ9AAAPhUlEQVR4nO3dX2xT1x0H8G8SikITZodWC8nDbGJtTGPFRm3VFUHjPKRVO212mCgvtCStOqFWGqaDvvTB132hE6tkXlqQKuGUPK0PuaF7mMim3ogotBVVT1ipxDqzy0uaqFViSiD0D/Iebs6NE8fBds6f6/D7SFELluxjf/ne3Ht87r11+Xw+P/k98N9bwI07wI95EEIEWVcHbGwAfn4/0LoeqJv8Lp//5FvdwyJk7XvsJ8C6L285f2hbD2xtctpICBHjxh3gyk3...
1
math
grade-7
identify-complementary-supplementary-vertical-and-adjacent-angles
false
true
Which angles are adjacent to each other?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEFCAYAAADZm5BpAAAgh0lEQVR4nO3df3DThf3H8VcgCFFcExX5EaBpcYs4Zoubgnc6wm0H4u4sHHWyQyk4R91NMHXMwalHcfq13nAtB7cBY3epp56esIHbFLjbrQw3C+dp1U2oK21KCRZRk6ISfhTy/YNLRmn6C5LPJ/nk+bjrtU0+n+T9uf7z4s07n7ctFovFhJwQDAbl8XjMLgMAAMDSBpldAIzj8/kUiUTMLgMAAMDSCNg5YuvWrWptbVUgEDC7FAAAAEuzMSKSGzwej1pbW+V0OhUOh80...
[ "\\angle{4} and \\angle{2}", "\\angle{3} and \\angle{2}", "\\angle{5} and \\angle{2}", "\\angle{6} and \\angle{3}" ]
null
1
math
grade-5
multiplying-fractions-by-whole-numbers-choose-the-model
true
false
Which model represents the product 3× 3 4 ?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAT4AAACOCAYAAACohWTxAAAFS0lEQVR4nO3ZvWqbdxTA4SPHCaIfqYa2JkNxOrTZknhKptoEQqdCbsDUd5AsHUtkmj23EGNfgTt2kZytk/NubQOxpka4g0hao6YxbwfhtC7GUOsfS/g8D7w4xnB85EN+CNSo67p+/iri6V7Ey/2I13UAnCmzjYj3z0V89k7E3IWIxvM/6/rHF5NeC+B03LgYMfvL3uibSxcirrw7qiLAWfJyP+KnPyJ+fRXx817EzIvXox+IHnBWvX9u1LiIiN/3I2b2//UDgLP...
0
math
precalculus
solve-a-triangle
false
true
In solving this triangle, which law must you use first?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADpCAYAAAAeakAkAAAveUlEQVR4nO3deXTU9b3/8edszGSWJARIABGRxShbIASyQ+/11KXUuty61Q1rVWrRci9Xz130Htve9thbe9taaVVai3WpVo/brbv+FMjKEghLNLIW2RIgJJmZZCYzme/vj5EYXFmSfGcmr8c5ntN+v0nmnZBMXvPK9/v5WAzDMBARERERkT5hNXsAEREREZFUooAtIiIiItKHegL21q1bsVgs/OhHP/rcN7zuuuvIyMhg586dAzaciIiIiEiysfS+BrusrIyWlhYaGhq...
[ "Law of Sines", "Law of Cosines" ]
null
0
math
pre-k
one-less-with-pictures-up-to-10
true
true
Count the dots in this group. Which group has one less than the group you counted?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAFACAYAAACGDgu2AAAY+UlEQVR4nO3d65OcZbkv4Lune6abzCSTM0UEwjAmAoWKYhWUUEY2SpXLssQgh1XL7f+2q9yuWop7r1guECGRSDDZCipoNORAAMWQSWYmM+lJuufU+wOkVqBCDtNP93uY66qi5gvVfT/zg+rfPP2871vpdDqdAAAAkhjIegAAACgTBRsAABJSsAEAICEFGwAAElKwAQAgIQUbAAASUrABACAhBRsAABJSsAEAICEFGwAAElKwAQAgIQUbAAASUrABACAhBRsAABJSsAE...
null
[ "iVBORw0KGgoAAAANSUhEUgAABDAAAAFYCAYAAAClCwyGAAAsYklEQVR4nO3d63Oc1Z0v+p9abUmWZMmWbdgwgDGKxaVIhgzUgYqpmISE1CQ7EwYmhFSlJi92zTlz3swfdPaL7JNJ2JOB2Tvkys0GJ04MTEgCM54YbGMggG1ZF0tuyd1SS71fGBMGsC2pL896Hn0+Va6uSinq39JvdbPW97l1RUQjAACAlmg0GnFyIeLofMTZpYi61TbAmpS7IjZ1R+zqj7iyJ6IrBBgAANAyJ2uNeHE26yoAiuXOoYhy1kUAAECRHJk//3pVT8S...
0
math
grade-8
changes-in-mean-median-mode-and-range
false
true
Look at this set of 7 numbers: How would the range change if the number 2 were added to the set?
"iVBORw0KGgoAAAANSUhEUgAAANgAAAAkCAYAAADrcPSPAAAHh0lEQVR4nO3da1CU1x3H8e/eWK7CLuDCgnIRAS+BisRqi4kkgpc0qR2rJhPTxFY7nUzSNlNrZ5K26dhmpsZJpiZNp5mMMRrjJFqvnTQYqhG8YAARRB0QFQj35bpyWZa99cUCupB2JuU5MOOczzvOzpz/w9nnt+c853lgVR6PxwPgdMPgELg94EGSpG9KBahV4O8HWvVwm8fj8Qw6wO6c0mOTpPuKXgv+OtA6XTJckqQ0u9M7i6lluCRJDLsT1C73VB+GJN2fXG5Qyw0...
[ "no change", "increase", "decrease" ]
null
1
math
pre-k
count-sides
true
false
Which shape has 3 sides?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAFgklEQVR4nO3dPW8URwDG8ed8NgUviYQUQpI6SZ2Kz0G+QgpCQRBFUBpaFClNSE/BF7AoaaF0SecQxcbCzqGTLPn8It/d7k6KxYSEYPt8u8/uzP5/nbHPN9h/397OzN71QghhMJH+OJB2cykLAua22JMu9aUvz0ufnpN6g3EIK6Omh4WUXftIWnxxUH7w2Tnp6wtlhcC8dnNpdV/6ayL9fiAtjLLyE0SGKl3ql01J0l4uLeTvfAKo0lFT0yAtNDsUdAWhwYLQYEF...
0
math
precalculus
solve-a-triangle
false
true
In solving this triangle, which law must you use first?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACzCAYAAACzf2u1AAAnKklEQVR4nO3de1iUBf7+8fcMZxARU/EsoKCLp5+Z2lW2WZuVyjddV3fVsjL7pqamVpZWppZd2uYpQ73MNFdbdctDFkmZlpVWWmKeBRTGA+ogcQgHBhhmfn/4jQW18jDwwHC//mOecZ57vK7s9vH5PB+Ty+VyISIiIiIibmE2OoCIiIiIiCdRwRYRERERcSMVbPEIr7/+OiaTie+///6yY8eOHaNBgwb8/e9/x+l0GpBOREREahKT7sEWT5CTk0OzZs3o06cPa9euLX0...
[ "Law of Cosines", "Law of Sines" ]
null
1
math
kindergarten
fewer-and-more-up-to-20
true
false
Which group has fewer?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAjQAAACECAYAAACH3rFfAAAaG0lEQVR4nO2d26+cVfnHv2ut931nZu9doJseoDGFItRCkIMQTomRaPAXD3hhYgiKeEG88MYb/Qv4F0y41AtNiCgXiGJE4yGaGBQVORQBQQ7WUigt3bNnZr+HtZ7fxTtrZs07s0u1805npt9PszPvaQ6fZ3rxzbPWvEuJiLydAf/sAm0LFAJCCCGEkLkmUsAOA1y1AuxNAPV2KvKnjXP9sQghhBBC/jduvQCIXumWO5cmwEdWy7RDCCGEEDLPtC3wUgc4mgEvdwG...
1
math
kindergarten
fewer-and-more-up-to-20
true
false
Which group has fewer?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAjQAAACECAYAAACH3rFfAAARlUlEQVR4nO3dy28TWd6H8a9jl1N2Lk5IN3QAB6mlJJtGNAs0arYwK9QrpGGWrPmDWLMcRmIziNU0u1YW0wsaZZXk1UgkEeHSmcRxfInLl3dRFAGaOLbr1OXA89nQDaRyHouSfimX62R6vV7vVUv6v7pU7UjtngAAAFItl5GmstJiUTqXlzKvjnq9/xwkvSwAAIDR/GVaym3U/f+Zz0vLE/60AwAAkGbVjrRWk3Za0npdGjto+3/AMAMAAGwxlfVnF0k67EhjnQ/...
0
engineer
grade-6
identify-independent-and-dependent-variables
false
true
Hint: An independent variable is a variable whose effect you are investigating. A dependent variable is a variable that you measure. Which of the following was a dependent variable in this experiment? The passage below describes an experiment. Read the passage and think about the variables that are described. Charlie l...
"iVBORw0KGgoAAAANSUhEUgAAAUwAAAELCAYAAACyM7+LAAEAAElEQVR4nOz9Z7ctyXnfCf4iIu32x59zfd1yQBUMQYKAKDZJuZZpqTWjV7NmVk+/mLf6LlprPkSvGY16Sa0WJZISQdDBCIYoAOXN9ebY7fdOHzEvInO7e8w1VaiClp67zs3caSMzI574P178y3/5Lw3/nf47/Xf67/RrRP/qX/2rz+W+DsD/+//1ldkGY8xsKc1s49J+YebHAWitl/YbUe430m6UarZfCIFGIIRYbgSAnG8DMOUx1bFmeff8mi/I8s3K861uO+3Yxf0...
[ "the type of mosquito repellent used", "the number of mosquito bites" ]
null
1
math
grade-7
identify-trapezoids
false
true
Is this polygon a trapezoid?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADkCAYAAACi9FP6AAAS80lEQVR4nO3deYyc9XkH8GfWu97Da2MbG4Mx5gZjfBBuc9ihSUE5OQKJSlsltEmTNIU2jVLaUlUoihqlSYUScvRQCmpaq0loIGejRAqJMWDKDQHbHCaOifGFr51d7znTP2zPrMHe9bEz7zGfj2T59452mAdpV/Pd4cvzFsrlcjkAAIAx0ZT0AAAAkCcCNgAAjCEBGwAAxpCADQAAY0jAHs3Pfpb0BAAAZIiAPZKhoYirroro7Iy4886kpwEAIAME7JGMGxdx0UUR3d0...
[ "no", "yes" ]
null
0
math
grade-2
find-the-next-shape-in-a-repeating-pattern
true
true
What shape comes next?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADhCAYAAAC9ZMGZAAAUjklEQVR4nO3dzW8c530H8N/MvpCSKFGiHYmypSYNowZW2igvFoxETmIFjd0U0sm3/gc95dBTgQR9SY65NIcWPffcaxs0RV7QAHktkBRwncahm0oyQ0kxbb1QEvdlpgeG1ivJXXJ3Znb4+QCBgWBn5/k9/tH73WeenUnyPM8DAACohbTsAQAAAKMj4AMAQI0I+AAAUCMCPgAA1IiADwAANSLgAwBAjQj4AABQIwI+AADUiIAPAAA1IuADAECNCPgAAFAjAj4AANSIgA8...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAz4AAADhCAYAAAAJS2C/AAAXfUlEQVR4nO3dzY8c95kf8KeqX+aFwxlyZJNDk5QdcxnDcmJ61+IKXlpe0chK2UA6+bb/wQIBdMgpgI282Me9xIcEOeeUQ66JkQ3WNqKFvWsFWAWQtbFMReHLeEhKQ1LkzHD6pSqH0Yhv89Yz3VXVNZ8PIAgiurp+z08/dte36umqJM/zPAAAgFpIkqTsIVRSWvYAAAAARk3wAQAAak/wAQAAak/wAQAAak/wAQAAak/wAQAAak/wAQAAak/wAQAAak/wAQAAak/...
1
math
grade-3
fractions-of-a-group-denominators-2-3-4-6-8
false
true
What fraction of the shapes are circles?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABKCAYAAACB4iNkAAAJ3ElEQVR4nO3dz28TZx7H8Y8Zj2fs+EfMj6TQOCBVJJeipQekBdHLttIeaDlsK63EqVxbaS/t/hftZQ9cmxO39kCbw0rbXhZlK3EoEnuJkSqwGyApaeLYmXg8nsweHBu1qwpCPTO25/26QuLvdzRSPnnyfZ4nFQRBIAAAAABDcSTuAgAAAIBJQsAGAAAAhoiADQAAAAxROu4CgDDUqh1JkuvsS5KsXO93yfmFTGw1AQCAZCBgY6yt1z3dv9tWbdXVet2Tu/die3atbEq...
[ "5/6", "5/8", "1/4", "3/8" ]
null
2
technology
grade
cables
false
true
What kind of computer related plug or port do you see here?
"iVBORw0KGgoAAAANSUhEUgAAAV4AAAEsCAYAAACLwdvQAAEAAElEQVR4nHz96dMk25HeB/7OFhGZ+S613IsLXGwNoNEAupvdTQ6l4Qw1pJEyG6PZ2JjN/zb6Y6Rvo6Eok8QhpVazSTZ6xY67VdW7ZGYsZ5kPfjziZFa1Ela4Ve+bGRlxFj/ujz/+uNnvhxJCwBhDjJFSCtZajDGUUkgpsSwLOWdCCOx2O7z3LMvCOI6EzgFgrb34XM6ZnDPGGJZlwRjDMAyEEEgpMc+zvCcWAIwxOOfw3mOMfK9+PgQPwDRNzPOMc46u93IfaWZZFmI...
[ "PS/2 plug", "Apple 30-pin dock connector", "DVI port (type I)", "PS/2 port" ]
null
1
math
pre-k
circles-squares-triangles-and-rectangles
true
false
Which shape is a square?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACbCAYAAACao4KyAAAMIklEQVR4nO2d649dVRmHf2vf97nPtZ0ytLW00FKs2NYCNWiMXISieEk0Ev87jYQvgighDRECqGhDBYwtpTMQCp1Op9NzZs5t3/defjiMFoLUs++X90mayczk7L06+znvetd611qHcc75dQdYNYChD3gcBBEZiQFNEThUA3YpALtuc35ukHWziDLzQAuQVozJN0sKcE99YiFBRGXoAx+MgXUHuGwAwsCb/IIkI+KkKU6cAoCRDwj+Lb8giDjZccrlgJBtU4iqQKI...
1
math
grade-1
match-analog-clocks-and-times
false
true
What time does the clock show?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAEJCAYAAADhBFPCAABOz0lEQVR4nO3de3RU9b0//Pfee265zOQGckmUq0JCK4inJGqlPa3BVbGu5xjaI9VzWuxpPV3P4YSuiv7R4lmC5w+FLqH2Wa36E9pfrdoj+DzLI/ozkZ6etEiCp+FSmYiFADIxhhCS7Nzmsmfv549JhgyZy3cmc8/7tZaLzOzvzHwbZpfP/u7P9/ORDMMwQEREREREeUHO9ASIiIiIiCh5GOATEREREeURBvhERERERHmEAT4RERERUR5hgE9ERERElEdMmZ4AZQG/Afg...
[ "6:30", "5:30" ]
null
1
science
grade-2
predict-heat-flow
true
false
Two solid blocks are at different temperatures. The blocks are touching. Which picture shows how heat will move?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAXc0lEQVR4nO3deZCkZX0H8O979Nv39PRM91w7szu77pVFBAHFAwQJZxlZjQlokorhjxxUNFYqJlbEVKpSUcskpjxSHlUhGMUKlKSAXUABQYRYrIqgCMIyx87Vc/Z0T9/Xe+SPt6dnZ6aX7aF73vftme+niqLmmT6e2af7+zzv732fbsEwDGO+DIzmgYwGqAaIiFpCFoCgBBzyAb0KIMyXDONnabu7RUQ73eUdgDySN3/oV4AjfjONiIhaIaMBp3PAXBl4LQ+IadX...
0
math
kindergarten
spheres
true
false
Which shape is a sphere?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAZ3UlEQVR4nO2daXMc53mur57pnhXrYN8BEVxFgptsxlYiK7bsOLEdK7GTfMiXVE5VKv8n3875Bak48W7HEq3VsiyJIghwAQFiIfZ1Bpi1p/fzoQEQADESSM7SPdNX1RSLIAvT033XM+/9PssrWJZlrakwnYO0AbqFh4fjEAWo98PpCHQEQFhTLOvTVKUvy8Pj5NxoAPFRzv5LVwDORm1Ve3g4jbQBk1lYVWEqB76Ubv+DJ1oPJ1PvtzUKkDHAZxz4Bw8PJ7OnUc0...
1
math
kindergarten
compare-two-groups-of-coins-pennies-through-dimes
true
false
Which is more?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAXEAAACYCAYAAAASu9laAABVG0lEQVR4nO29d3hd1Znv/9l7n15VjrrVbEmWLPfeAQPGppgECJACmWQSMpPkMrkhdzITpiVTcu9MbpIhucNcBpIJk0CACQRITDGm2AZ3y022iq3ej6Sj0+ve+/fH8dmxfiQzLhjQnfV5Hj+SbPmcs9+99net9a63SLqu6yMpOBODsAoZHYFAIBB8SDFJ4Fag3gElFpBGkrp+IPRBfyyBQCAQXCyrPGDqjGV/KLPAXGdW4QUCgUDw4SSsQnsUhlPQEQM5lMn+gxB...
0
math
kindergarten
one-more-with-pictures-up-to-5
true
true
Count the mugs in this group. Which group has one more than the group you counted?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABmCAYAAADxjOYpAABFzklEQVR4nO3deXxc533f+89zzpl9x2CAwUKsJLGQ4iJRMkVKliVLtmUnsR0njmO3N7ET3yaNnfa29U3aV9M46U3bpM29bdbee9vUWRq7cZw6trzGsmRbOyluIgGuIABiX2bD7DPnPP3jYCVAEgBJEJKf9+tFURwMzpwFv9d88cxzfo+QUkoURVEURVEURbkjtHu9A4qiKIqiKIryVqICtqIoiqIoiqLcQSpgK4qiKIqiKModpAK2oiiKoiiKotxBKmAriqIoiqIoyh2...
null
[ "iVBORw0KGgoAAAANSUhEUgAABIYAAAB+CAYAAABRYRpnAACJkklEQVR4nOz9d3xd2XXfDX/3Obf3it5JAmzDNpzR9K4ykm01Wy6KY9mxkrim2W+c532dKM4nyWM7ySdxXPLkcdzjphJbGklWGY3KVJLDTpBgRe/A7f2cs98/DioBkgBIgpjh/n40AnFx7mn7/O5da+211xKARKFQKBQKhUKhUNwRpJSMV+FyEXImGMraVigUCsUWwiEgqMMOH9S7QKACQwqFQqFQKBQKxR1jvCI5kr3XZ6FQKBQKxa15Twgc9/okFAqFQqFQKBS...
0
math
algebra-1
identify-linear-functions-from-graphs-and-equations
false
true
The graph shows a function. Is the function linear or nonlinear?
"iVBORw0KGgoAAAANSUhEUgAAAfwAAAH8CAYAAAA0Uh0TAABp8klEQVR4nO3deXQU95ku/qc37fuCJBaJHVsgVgMGxOLg3Y4TcBKcxHaccZw4iePcuWfmnsycnPwmubYn98wkM3G8O46xs4xjJ9gxi8DYCElIBoEAgQQGIUArWlpqtXqtpat+f5QlI4tFjfpLq9XP55ycuArVo1ff6q63qqu6yqTrug4iIiIa18zhLoCIiIjEY8MnIiKKAmz4REREUYANn4iIKAqw4RPREP/zP/+DysrKwWlVVfHUU0/B6/WGsSoiGi02fKIosnnzZmz...
[ "linear", "nonlinear" ]
null
0
math
grade-3
correct-amount-of-change
false
true
You pay $4.72 to buy a jar of fish food costing $4.46. You receive the following change:Is this the correct amount of change?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABNCAYAAACc5xPcAABHu0lEQVR4nO3dd3Sk53Xn+e8b661cKACFnFMDnXMiKYZmUCAlUZlKloMs25Ilazwra8Yz9tqesde7Mw4zHltaZVmZpERRpBibZDfJzhkd0GgA3ciFVDm9cf+oVsvalS2Rakpa8fmc0wencbqBt+6pP354cJ97Jc/zPARBEARBEARBuC7kX/QDCIIgCIIgCMKvEhGwBUEQBEEQBOE6EgFbEARBEARBEK4jEbAFQRAEQRAE4TpSX+lv4LkOpWKRQi5LPpclk05TTC9TKFe...
[ "no", "yes" ]
null
1
math
algebra-2
match-exponential-functions-and-graphs
true
false
Which graph matches this equation? \[ y=\left(\frac{1}{2}\right)^{x}-6 \]
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAVUAAAE1CAYAAABX+HN0AAAcGklEQVR4nO3dfXBU9b3H8c9uEjYPxMQ2D1RbQsQrkQcJpNeE+hBjhwIKM4JTQYa2gNgLBaczF+cOOBdwbqtiR/mjl/pQH5AZR+SijNdgEWyNU7xN4IIsDngDXDD1igmJwAZIzCbZ3fvHuks2CZCH3+ack7xfMwzZ8/T7bk72s+ecPb/fukKhUKiuVfrfZulCQGoPCQDQQ4kuKT1B+odUKXeY5Krzh0L7zltdFgA4X/E1UuLx5vCD7w2TxqSFExcA0DMXAtLRJqm...
3
math
calculus
identify-functions
false
true
Look at this graph: Is this relation a function?
"iVBORw0KGgoAAAANSUhEUgAAAQ4AAAETCAYAAADH+ejgAAAO4klEQVR4nO3dQWyT5x3H8Z/DWAKhJAIRUrWwMkLiA8WOoJujSAi4gFvSilYdVaVEQirSkNpbei1MLRVTwwko6qWi9qVDVVcJJJiQSC7UpgJhB6szayiQHBpgBRsIMTDjHTJ7mBjC33ZsJ/l+LsDrN4+fvq6+eV+/Th5HKpVKCQAMqso9AQBTD+EAYEY4AJgRDgBmhAM5JRIJJRKJck8DFYpwIKdQKKRQKFTuaaBCEQ7kFAgEFAwGn/j4/v375fV6NTQ0JEm6f/++3n7...
[ "yes", "no" ]
null
0