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
math
grade-3
compare-fractions-using-models
false
true
"iVBORw0KGgoAAAANSUhEUgAAAtUAAAC5CAYAAADnGsNjAAAsEUlEQVR4nO3de1zN9x8H8Nf3qM6pTvebUm5hKZMics1dLjPXzXWGuQ3DxrDNxqzxY78Zm+vGGLPMbT9jyWUkcq0QESLJtZJSdD2f3x+tM0e3ky8Kr+fj4fHY+V4+3/fne76r1/n0+X6PJIQQICIiIiKiJ6Yo7wKIiIiIiF50DNVERERERDIxVBMRERERycRQTUREREQkE0M1EREREZFMDNVERERERDIxVBMRERERycRQTUREREQkE0M1EREREZFMDNVERERERDIxVBM...
[ ">", "=", "<" ]
null
0
science
grade-8
compare-concentrations-of-solutions
false
true
The diagram below is a model of two solutions. Each pink ball represents one particle of solute. Which solution has a higher concentration of pink particles?
"iVBORw0KGgoAAAANSUhEUgAAAbAAAAEVCAYAAACBn7B3AABYhklEQVR4nO29eZwcdZ3///xU391zJyTkziQkAXJxhTMgx3LfwoqgKLiI8nNVZD3Yxa+ruHixCKIriBeieCwgsJrIjeABSIAQSALkIpD7mrvvqs/vj+qqrp6zZ6Z7mO55Px+PSabr+nyqpl79Pj6X0lprBEEQBKHCMN7rCgiCIAjCUBADJgiCIFQkYsAEQRCEikQMmCAIglCRiAETBEEQKhIxYIIgCEJFIgZMEARBqEjEgAmCIAgViRgwQRAEoSIRAyYIgiBUJGLABEE...
[ "Solution B", "Solution A", "neither; their concentrations are the same" ]
null
1
math
kindergarten
tall-and-short
true
false
Which waterfall is taller?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJUAAAFECAYAAAAut3xxAAAcy0lEQVR4nO3df2yb953Y8Tf58Jf4QyIpyZJsKbLi327sxMnlkjS9Zr1rml2zonMHtCuQ4oJuuGVb/+oN6DYMxbYChwU73A3DIfCA3RYswQ3B0jPSQ65b0jbNNWns+BI7TmvZsmRZtmSJ+kWKv3885LM/HpIiRVIiqa9+2P28AMGW+OOhxLe+z/f58pFkMQzDmMvCeBJiedANhGiJzQI+DQ65oc8BlrmMYXwY3emHJe4Vj3WC7XrSfGfAAUc8ZnFCtCKWh2sJmM3...
0
math
grade-2
which-table-is-correct
true
true
Mark went up to the attic and found the following items:He decided to count how many of each there were, so he made a table of the items he found. Which is his table?
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC+CAYAAADnV7CxAAAxzklEQVR4nO3deZxcdZ3v/9fZa+nqpXpNdzqddDYTkkACsgQZQMQLDMaFVWX0ipcR5fcDV2ZQhjjX66BynYgoE0UEHREXBtABZTGIiCwCEkhIOiGdpPe9qrr2OnWW+0d1d+h0Ejrdnaru1Pf5ePBIU3Wq+ns6nff3fM75nG9JX/3qV10EQRDyQAXYuHFjocchCEIRkAs9AEEQiocIHEEQ8kYEjiAIeSMCRxCEvBGBIwhC3ojAEQQhb0TgCIKQNyJwBEHIGxE4giDkjQg...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAoYAAAC+CAYAAACoPM6QAABf50lEQVR4nO3deXxcdb3/8dfZ5sySyb6nbdp0o6UFWorQIrIjIFQBWRTEe+HHFUXBHUEFFa8oqBXZQRYVRITLoiAUKJsIyFrolpZuaZpmzySzz5mz/P6YNCW0bG2aSZrP8/Hoo+nMmZPvOUmT93yXz1f5yU9+4iGEEMPgJz/5Sb6bIIQQ4gPoAJdffnm+2yGEGAMkGAohxMim5rsBQgghhBBiZJBgKIQQQgghAAmGQgghhBCinwRDIYQQQggBSDAUQgghhBD9JBg...
0
math
grade-6
nets-of-three-dimensional-figures
true
true
Which figure will this net make?
"iVBORw0KGgoAAAANSUhEUgAAAM0AAADNCAYAAAAbvPRpAAAExklEQVR4nO3dMU4bWQDH4Tcrui1XSqS9QCJEyuQA5ACkTQXUPgA5AjnA1CEVrTmAOQApbUXJBVZKpC23nm3WEcZeJX/wy8RP39cxgtEbeX68GfPMdMMwDAX4Yb+NPQDYNXu3v+i6bqxx0KgWL2S+zTSCoYYWz6u9uxs+vn43xji2Zv/ytJSy+8fRguVr0Rr3NBASDYREA6G1e5pd516G2sw0EBINhEQDIdFASDQQai6a/cvTZv8Sza+huWigNtFASDQQEg2ELKOBkJk...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAUkAAADNCAYAAAA13ILSAAAPsUlEQVR4nO3dbWyV533H8d/BBopJoAYPA2EOTWAQHtqEyhRIYKmTtVVEEtpsUxNe2EzR1pVpy4gmshaiOAINNpFslawozQvIKtWIvBg009QtAlWlOKrRUidQcyBmIzaPDsE8GNMyw9kLc59exw+XfXzux+t8P1Jk5Tbc5zq67R////9+OKlMJpMRgBFLpVJRLwEhGhP1AgAgzkrN/+FfSPiNRgVJl60kCUgEgZ8rJF1p/w2tz+6MYh2+WdC4TlLy34cLvGMBJBk...
1
math
algebra-2
find-inverse-functions-and-relations
false
true
The graph below shows a function. Is its inverse also a function?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABrHUlEQVR4nO3de3xU5b0v/s+aSzK5T0hCEgIJIJcaTFAUEQTFjVWrrS10d2O7W+s+tvvYU2tPz9k9r5796u5rt8eXp/vVy9612tqe7ana7nN66q/qVjFQLAg0UZAIgQQKMUAuQC6TzEzmui6z1u+PsEYiBGbIelgzmc/7H51h1jffPM8za77z5FnPkgzDMEBERERERJZw2J0AEREREdFMwgKbiIiIiMhCLLCJiIiIiCzEApuIiIiIyEIssIlokv/7f/8vWltbk481TcP...
[ "no", "yes" ]
null
0
math
kindergarten
subtraction-sentences-up-to-10-which-model-matches
true
false
Which picture shows 8 − 6 = 2?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAXYAAABKCAYAAACvkX8HAAAWNUlEQVR4nO2da3Bc1X3Af+c+9iVp9ULy2xiDbBKIg3kYTEII5DFNwyMEpyVAwelMmyaTmXzhQ6dfOk3aTJNJm3xIZprppHYSSMLEZFoeSZqAC4ZEtgHbMSYgyRZ+YFsPW5ZW2td9nX64+9BKWksWK4zX/9/MIl3tvWfPb/3nf88995xzldZaDzhwMAPjPngaQRAE4QLCUtBkQlcCFkVADeS13p0639USBEEQasGNSbD6MuHGkgisbQizviAIgnDhMO5DTxpOOtC...
1
math
grade-2
place-value-up-to-thousands
false
true
What is the value of the underlined digit?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAAiCAYAAABlRa5TAAAH+0lEQVR4nO3dbUgU7RoH8P9upqvWsplIalqWtrhYaZmBumBUhAZhpUhpLwZRRPaCpEmlYBRGGYIftLSIerCMihBDkkjYWETURDOspPJlaUtNLC13zZrzwdMc52i62+zDofP8fyDMPXO/XLOfLuSe61YIgiCAiIiIiIgcQvm/DoCIiIiI6P8JE2wiIiIiIgdigk1ERERE5EBMsImIiIiIHIgJNhERERGRAzHBJiIiIiJyICbYREREREQOxASbiIiIiMiBxAS7r68PJ06...
[ "90", "900", "9,000" ]
null
1
math
grade-5
reflection-rotation-and-translation
false
true
How has this figure been transformed? It has been...
"iVBORw0KGgoAAAANSUhEUgAAAPoAAABkCAYAAACvgC0OAAAPNUlEQVR4nO2dbUxb1xnH/zbGjg0xLLxkCi9r1ASSFdQgkWzCleoC2bRECqP7sCRaM0D7soVk+0LWlg8lk9pkjTRpa5D2qSZUWpgmBZIPidoY0moFbYQKpiDxVk2TXWjjQAN2Y3Nt7LsPzAwChHPt+3LMfX4SUoLOfc7BPv97z7nnOf9jePnll0Wn0wk5+OSTTyCKIihe4vHu3bsnSyytcTqdXH/OeotncjqdaGtrkyXgxYsXIYoixUsi3naB+hVf8YyyRCIIgmtI6AS...
[ "reflected", "rotated", "translated" ]
null
1
math
grade-2
compare-vertices-edges-and-faces
true
false
Which figure has more edges?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAIAAAACACAYAAADDPmHLAAAQfklEQVR4nO2de1xUZf7H3wMjGAqDNxSVhgyzxIS0fmpkkLhlF5VdKdx+KeRtrU1BEK+r4N3wAtqa4g1bNy8I4m3VrQjUrCiVMe9hgoZyUSDl5iDD+f0xDZtFrb+cM2dmznm/XrwchDnPh3nec55zvs9zzqgEQRCK6+BiDVQaoF5AwY5Rq8DVEbq6QHsnUBXrBeGrW1LHUpCCPm6gzqsxfuPpBN1aGO1QsF8qDXChGorq4NsacLhVb/yB0vnywNXR2NcAVQZwMPz...
0
science
grade-7
use-scientific-names-to-classify-organisms
true
true
This organism is a European hare. Its scientific name is Lepus europaeus. Select the organism in the same genus as the European hare.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOy9ebxdZXX//17refY5d0hyM5KJEOZ5EkGsA3UWkVoHxKlVi61i1bZaFbS1fqnfyvdb/aot4lBx1iqOVezPSh0q4MQcEAQEAmFKAgnkJnc4Zz/PWr8/nn0PCWEIGm1L9/v1uq8kdzhnn733PVnPej7r8xF395QSZkZLS0tLS0tLS0tLy38NVJUY48P/uba4b2lpaWlpaWlpafmvh5mRUnrYP6dtcd/S0tLS0tLS0tLyX5NfpVbX38BxtLS0tLS0tLS0tLT...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA6IAAADMCAYAAABp7h4wAAEAAElEQVR4nOy9d7xkVZn1/3323uecqrqxE3Q3Tc4SRRDHwIgYEBnHgAhiREdxTGMEdRyH8VVm1J86ImYxYEJ0HMV5fWUMI6AiuQmSUwMN3XS8qarO2Xs/vz/2qbp9aUKjbRit9flc6L63btVJVX3WXutZS1RVvffEGBlggAEGGGCAAQYYYIAB/jRgjME594h/T0R+D1szwABbF2ZAQgcYYIABBhhggAEGGOBPDzFGvPd/7M0YYIDfC9yAhA4wwAADDDDAAAMMMMC...
0
math
grade-4
what-decimal-number-is-illustrated
false
true
What decimal number is illustrated?
"iVBORw0KGgoAAAANSUhEUgAAAKQAAACkCAYAAAAZtYVBAAACIElEQVR4nO3YwWnDMBiAUTl0qszRETJANijdIAN0hM6RtZRToQfbUArxB3nvKmR0+PQjvMw554CI09EHgN8ESYogSREkKYIk5W1v8XxbnnUOXsz9uv5zZ3NCipEj7E7IMca4vH/8+aNf35//3rt1g/b8XCJ7+3u3eEOSIkhSBEmKIEkRJCmCJEWQpAiSFEGSIkhSBEmKIEkRJCmCJEWQpAiSFEGSIkhSBEmKIEkRJCmCJEWQpAiSFEGSIkhSBEmKIEkRJCmCJEWQpAi...
[ "0.1", "0.2", "0.5", "0.3" ]
null
1
math
grade-3
coordinate-planes-as-maps
false
true
What is at (4, 8)?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAFjCAYAAAAHNnwuAACDAklEQVR4nOzdeZxU1bno/d/ae9fU8ww0kyCCjDIooFEEVBSiqFGTeNTrdYgaYzTRg+ZEvUlOct+oiYmao0mMJ7nmJCYxGmeNEwpOUUQcQZnnbui5qmvcw3r/qKag7QZ67sZ6vp9PaVfV3mut6mqqnlr1rGcprbVGiD7WGI6SSNpdOjeRTBFt3E1ix/vYTdW4rouZP4jC4VMoGDQS0zT3e25eToC83FBXhy06qDkapzmWbPc+rTW1u6pJvvAdikfMIFg6Gs9xcV0Xz3V...
[ "locksmith", "hospital", "library", "art supply store" ]
null
0
science
grade-4
identify-living-and-nonliving-things
true
false
Select the living thing.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAEAAElEQVR4nOz9d5Scd3bfCX8q55xD55zQDTQyAQLM5DAOOcMZxZHslaWx/K5XcrZ2V7ZWx0myV7akI41k2aI00miGE8gZEiTBBILIoXOOVV3VlXPO9f7xNFrrPdz3jM1/9j1Hzz/AKfTpblTd5z73901XdDfbbg9pQCfhb66/uf5feeWbsF6EcA1MUjhnFF4X/03h/s31//ZLJ4EhjfD3QvOvXxf/TeH+zfX/D9eDOq23//o16Wd94fNjPbTbbcxmM729vayurqF...
0
math
precalculus
determine-continuity-on-an-interval-using-graphs
false
true
Is the function f(x) continuous on the open interval ( – 5,1)?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAACEJElEQVR4nO39e3gU55knfn+rz0edhSQEEieDEZbAHA0GG8eO7diJJ+AkdvLGibPeJM4kk2RmZ/Y3v2wm786M15vdSZw3mTibZDcb20l2MvHGdsZ2BMEGAwZzEiCQwCALkBCgQ0t97uqq6q56/2haRuakRvWo1dL3c11cF2p13X2rqrvqrqefg2QYhgEiIiIiIjKFJd8JEBERERFNJiywiYiIiIhMxAKbiIiIiMhELLCJaIStW7di1qxZePDBBwEAH/vYx/Dyyy9f8bm...
[ "yes", "no" ]
null
1
math
grade-2
interpret-tally-charts
false
true
Anna's friends voted for their favorite pizza topping. Anna made a tally chart of the results. Which topping got the fewest votes?
"iVBORw0KGgoAAAANSUhEUgAAAXUAAADWCAYAAAAuAhI8AABIkklEQVR4nO2dd3iUVdqH7+klZQIECKEk9IBAAkgXCKiAKIiouJSlrQ0Loq4FVkVWsaCssK5SVGBRdD9sgIKCigGRIiBFgYQSEloIBMgkYTKZ+v0xZJJJZiaTzCSTDOe+Li4y5z3lmRfye8/7nOc8RzJ19BY7AoFAIAgJpME2QCAQCASBQ4i6QCAQhBBC1AUCgSCEEKIuEAgEIYQQdYFAIAghhKgLBAJBCCFEXSAQCEIIIep1AJlOwUv/vYkZS/si0ymCbY5AIKjFCFE...
[ "mushrooms ", "peppers ", "tomatoes " ]
null
1
math
grade-4
identify-parallelograms
false
true
Is this quadrilateral a parallelogram?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABHCAYAAAA9fDC6AAAKaUlEQVR4nO3daXBV5QHG8efcm9xsxMQYCtFUUECWKCI0gAgVGrZSARckCSQRrbFSLAKOOFIXULEjHRRpxaWOIAlkcQCtGwhUqECrKLKoECEVxlgsmyAQICS5/YAcvOE6oNyc9y7/37fzTob7fMnwTOa897G8Xq9XAAAAAALCZToAAAAAEE4o2AAAAEAAUbABAACAAKJgAwAAAAFEwQYAAAACiIINAAAABBAFGwAAAAigKNMBTNt2oErZix9SjDtKHne06TiAMQeOHdI...
[ "no", "yes" ]
null
1
science
grade-5
identify-earths-land-features-using-satellite-images
true
false
A delta is a nearly flat area of land that forms where a river meets a larger body of water. A delta is made from rock and soil that is carried downstream by the river. Sometimes, deltas are shaped like triangles. Select the delta.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOEAAAC0CAYAAABi8Es+AAEAAElEQVR4nFT9x45lW5qli31TLLW1bZNurtWRoSOzKkUVCFyAT0GAwCVRF6gWq8UGAb7DbfA92CKbJMi6l1VZWREZmXG0cG3atm291FRszGXmkR44cYQL27bWnL8Y/xjjF//n/8v/NSRaI5UizzOyNEVKaJoWYyxZmpIkCQSPCwGEwLQtxlqUkkihCAF88KgASZpgnadua9qmwTlLIjXPnzzj4eOHZHlKEAIpBAIQQgAS8NgQmK82fPP9dywvLvn1r37NYGeHtml...
0
science
grade-2
natural-resources
true
false
Which of these pictures shows a natural resource?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAV4AAAElCAYAAACszooYAAEAAElEQVR4nOz9569teXrfiX1WzjvvffKNdSt1VwcGiaTkmaE4lKCBKWsEDOwBxm9sGDD879iA31sjAYYBceDhKIzFoWbsEZsdWN1dXeneqrrhpJ3jytEvfmute6q7OrhpvesFEOw6955z9t17ref3PN/0SN/bVdVbDngKv7l+c/3m+s31m+v/j9ehgE8DuE2hr8Lf7Ymvy78pur+5fnP95vrN9R/m8hR4yxH/2y9ef13+TdH9zfWb6zfXb67/cFdTY7Pq9dfUr/q...
0
math
grade-2
correct-amount-of-change
false
true
You pay 26¢ to buy an apricot costing 22¢. You receive the following change:Is this the correct amount of change?
"iVBORw0KGgoAAAANSUhEUgAAAiUAAAA/CAYAAAA/v7g/AAA4H0lEQVR4nO3dd5Td533f+ffz67eX6R1TgUHvhSBAUqQokiqUZcWyZSX2ukSx43Vib7ypm+JkfXKySdb2OombbFkuUmSZlEVRFAtYwQKA6L0OMJjB9Hvn9l9/9o8LMckJZYMUKRHB73UOzwGIczD381yc3/3ep3wfIaWURCKRSCQSifyAKT/oFxCJRCKRSCQCUVESiUQikUjkAyIqSiKRSCQSiXwgREVJJBKJRCKRDwTt/f4BMgxo1OvUKmWqlTKl5WXqy0vUbAcFSOX...
[ "yes", "no" ]
null
0
math
grade-2
identify-repeated-addition-in-arrays-sums-to-10
false
true
Which addition statement describes the array?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABiCAYAAABqHaQ/AAADE0lEQVR4nO3bwW2jQACFYWblO2xHzCGtpJe0kGsaQMoxF3cUu4LZDiwPerAGfZ/kG6B5Pv1CdmmttQEAAIj4878PAAAAZyKwAQAgSGADAECQwAYAgCCBDQAAQQIbAACCBDYAAAQJbAAACBLYAAAQJLABACCoK7BrrUMp5WU+tdbYF2Gbba+2DQA4ptJaa09fXMqWZ1ml4/gP2bYv2wCAs7qsuenn9zN9jm5vf983ea5t27INADg7v8EGAIAggQ0AAEECGwAAggQ2AAA...
[ "1+1+1+1+1", "1+1", "5+5+5", "4+4" ]
null
3
math
grade-1
compare-sides-and-corners
true
false
Which shape has fewer sides?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAALgAAAC4CAYAAABQMybHAAAGmElEQVR4nO3dXWuUVxSG4WcmiRirsZS2RlqDClakILWFeuZxf0p/Yv9CPWhFKGItVvzAiG3RRJOaD98eTAMyZE8Gce+9nsV9nUngnX1wI4vJXnlHwzAM6zvSH1vS5r60NwiwtTiSTi1Il05IZ45Jo/U3w3Bzo/exgA/v+oq0eG9r8o+zx6TLH03qB1xt7kt3X0tPd6Tft6Txxt7kB8SNDE4tTFqWpFf70nj/nR8AGRy0vDtI475HAeoicKRG4EiNwJEagSM1Akd...
0
math
pre-k
squares
true
false
Which shape is a square?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAD0klEQVR4nO3aP24TQRTH8d/aToqQQAfiAEBJmWNwA47GHbhGOsoAPaGNE0sJsZZiCZj8deydN/Pe+36llbxaaTTFR2PvjLu+7/uTS+n7QpovpateRFs366SDqfRmT3q1K3UnF31/dFp7WhS5w+fS7NtiuHm9K717Nigk2rb5Ujo+l35cSl8X0uT0angAMhqzg+lgSpLOltJkufKAaMyuTf3qpUndqVCWgEYmAY1MAhqZBDQyCWhkEtDIJKCRSUAjk4BGJgGNTAI...
1
math
grade-3
read-a-calendar
false
true
What day of the week is April 28?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAF2CAYAAAAbcOzWAABW4UlEQVR4nO3deVyVdd7/8ReHRREFZHVPFHcRBXckJrPQzJzMcdJpbqe0pvWexn5WN03blHmX1TTWPdlMi6mZplaiZrgUKKTkirupaIiAG4Eiu+f8/kCOIKgH43Dg4v18PHoY57rO4XM+XMvn+l7f7/dyslgsFiqIzSzh25MlHC8wIyIiIiK/Xnt3EyMDXbmrtaujQ5FGwKligR+bWcyRfAsT27rianLCcq13ioiIiMh1OQElZgufnyimUzMTY1u7OTokMThTxR++PVn...
[ "Thursday", "Friday" ]
null
0
math
grade-3
identify-two-dimensional-shapes
false
true
What shape is this?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAC7CAYAAABfLOnYAAAQX0lEQVR4nO3d30+U954H8M852b3f/2H/gf3PvCBZ3XjjOfXYi9omNtWQyGKqYhMwbbW16tm6iSSWtVUpICOCC6VAmA2/yqAOjDM8e1HpOaet8mtmvs/MvF6Xgs/zvnxD+LznD1mWZQEAANTFH1MHAACAdqJgAwBAHSnYAABQRwo2AADUkYINAAB1pGADAEAdKdgAAFBHCjYAANSRgg0AAHWkYLNv7z75JCY35lPHAADIJQWbfemfuxtXZv87jo30RLm2lToOAEDuKNj...
[ "triangle", "hexagon" ]
null
0
math
kindergarten
compare-two-groups-of-coins-pennies-through-dimes
true
false
Which is more?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAWIAAACYCAYAAADeIuOxAABV+UlEQVR4nO39eZxcd3nni7/PWvva1dX7olYvarX2ffUOtrGNwWADCZCEmYSEcElIbnLnMhnmQvILM/dmJgSYJC8DCTjsEAO28SLvsixZ+760pO5W73tX115n//1R6hqbBGIZyy1H562XX2q5u6vO53zrfM73PN/neb6C4zjOhA4XC5C1wHRwcXFxcbmKyAKEJOjwQ40KwoTmOAcyi31YLi4uLtcnm8MgXyiU/1GnQleg7NIuLi4uLlePrAW9eRjX4XwBxIxZ/oZ...
1
math
pre-k
ordinal-numbers-up-to-tenth
false
true
The first picture is a crab. Which picture is ninth? first
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAgyklEQVR4nO3df3QU9b038PfM7oYksAkEFEhSFUpIiAgoNok9FnOF5GALihAfC7ZHo9XQcx4BTwHP4wMKV+69VWkfgj1HQDTcnkewNaG9YsWboBdrz3kWDjxG5En46YW6IVgpV7KQYDY78/wx2U022R+zuzOzszvv1zk9bXZn5/vl0++vmfnO9yvIsiyDiIiIiIg0ISY7A0RERERE6YQDbCIiIiIiDek2wP7GK2PSv3fh9o88+MbLWShEREREZA1xDbD/2OnFxhPXIw6...
[ "crab", "boat", "bucket" ]
null
1
math
kindergarten
one-more-with-pictures-up-to-10
true
true
Count the squares in this group. Which group has one more than the group you counted?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABeCAYAAAAZpWPpAAACM0lEQVR4nO3asQnCUBhGUZWQwikcQdK6Q9axdWQ3eFbWNvchhHMG+Hl81SXkPMYYJwAAIHH59wMAAOBIBDYAAIQENgAAhAQ2AACEBDYAAIQENgAAhAQ2AACEBDYAAIQENgAAhJZZhx+v96zTh7Fv6+m5X9Obdv9txu4AAF++YAMAQEhgAwBASGADAEBIYAMAQEhgAwBASGADAEBIYAMAQEhgAwBASGADAEBIYAMAQEhgAwBASGADAEBIYAMAQEhgAwBASGADAEBIYAM...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA04AAAB2CAYAAAD/YcPcAAADyklEQVR4nO3dMW4TQRiG4X+x4yIQaBCIjgZoUZoUnIFch5YzkVvkBiH0BJEC2YmlhFhDsUn9FexqZed5mu1Gv2aaeTWW3FVVKwAAYBCttbq4rfqxrlptqu7ctrfSvKs6mFW92696vajqSjgBAMBgLm5anS6nnoIhHT2vmk89BAAA7JLzdf99s6j68LR/tWD7rDZVZ9dVP2+rvq+rnkw9EAAA7JLlXf8VTdvtYNafYVXV1UY4AQDAoDb3X9G0/R7O8G8TTgAAAJF...
2
math
pre-k
fewer-and-more-compare-by-counting
true
false
Which group has fewer?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAKkElEQVR4nO3dy2/U1R/G8WdKxUihClUowUqqFUgToi64BC+BorJy6QWJia40QTCSqP+BiYlBDWFnZKPGiG4kakS5LICoiBhI0GrlYq0WC4ilReEH/f4WB4IJNnR05jxnzrxfCRmJ6ZxPP533FzItM6WiKIr+s1LPaenUeelcIQBV0liSJo2Tbp0gTRsvlfrPFMWXg+6xgPqzoFlq/OF0+M308dLsplAngOo4dV7qHpZ+PSt9f1pqGDwX/gfxAdU3aVxoTZKGzks...
0
math
grade-2
place-value-up-to-hundreds
false
true
What is the value of the underlined digit?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAAiCAYAAABlRa5TAAAGPklEQVR4nO3dT0hUaxzG8edM0mgOppmFUJZYhpUIJVFpCRUIFeVC1JAQzEqiRVIZkUSbNhm6kv4oJRFYhgRZNKXQosLILFPUFoYVRoRMWtbQlHnuwtu5zZ3RvLe5lZfvBwbO+c07v/Oe3cPhnfcYpmmaAgAAABAQtl89AQAAAOD/hIANAAAABBABGwAAAAggAjYAAAAQQARsAAAAIIAI2AAAAEAAEbABAACAACJgAwAAAAHkE7Db2tqUn5+vmJgYBQcHa9asWcrIyNC...
[ "60", "600", "6" ]
null
1
math
grade-8
identify-linear-and-nonlinear-functions-graphs-and-equations
false
true
The graph shows a function. Is the function linear or nonlinear?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABfkElEQVR4nO39e3Bc5Z3v/35a3a371ZItCRnJGIODjGRsMMTGBjMmQCBhxybZJqlcmJPJhOyQ28yZXTlzMqk9GTa/VM2QVBhgJ9mTHcjs1MmECjABIxwTDHbkYGNhy0jmYoyRJdu6tK59X6t7rfOHLWH5giW8Hrfber+qVHZf1kdfraf76W8/vbrb57quKwAAAACeyMl0AQAAAMCFhAYbAAAA8BANNgAAAOAhGmwAE2644QY9/fTTE6d///vf64orrpDjOJkrCgCALEO...
[ "nonlinear", "linear" ]
null
0
science
grade-8
compare-concentrations-of-solutions
false
true
The diagram below is a model of two solutions. Each blue ball represents one particle of solute. Which solution has a higher concentration of blue particles?
"iVBORw0KGgoAAAANSUhEUgAAAbAAAAEVCAYAAACBn7B3AABj7ElEQVR4nO29eZwU1bn//zndPT37DCAKIoMzsgwgIOoFXHCPojgal1zXmKhfxcvPe40xxiwkxiXGGOMSTTQhJlETjTfilgSCiBvGfUOughuM7IsKzNrd0911fn9UnVPnVFf3dPd0z3TVPJ+XON2nTp06VXU+9bzPU9XdjHPOQSKRSCSSxxQY6A6QSCQSiZSPKICRSCQSyZOiAEYikUgkT4oCGIlEIpE8KQpgJBKJRPKkKICRSCQSyZOiAEYikUgkT4oCGIlEIpE8KQp...
[ "Solution B", "Solution A", "neither; their concentrations are the same" ]
null
0
math
kindergarten
more-or-less-likely
false
true
On which color is the spinner more likely to land?
"iVBORw0KGgoAAAANSUhEUgAAAbsAAABkCAYAAAAfdp5QAAAQcUlEQVR4nO3de3BUVYIG8I8QOg8S+jakAYUOIXHEAAnQtxFLxeURHHWVyDhO0iEICbqgjlKuQBBRBstaHNQZq6Zqt2YUcBzoRAfxMY5bIijMzi4KfZtX4gACiSSyS159Q9LphECyfyCUms773nv68f3+o3M55+u/vjq37zl3UEdHRweIiIjCWJToAERERHpj2RERUdhj2RERUdiLFh2gP3y+ZqgNKlSvCq+qokFVAQBmSYJFkiBZJEhmCUOHxosNSkREQWFQMD+gUlN...
[ "yellow", "white" ]
null
1
math
grade-4
fractions-of-a-whole-word-problems
true
false
Lester has baked a giant chocolate chip cookie. He knows he should not eat the whole thing at once. So, he cuts the cookie into 10 equal pieces. Lester eats 1 piece now. Which model represents the fraction of the cookie that Lester eats now?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJ8AAACfCAYAAADnGwvgAAAgQElEQVR4nO2dd1QV19eGH7oIgooNsYJYAUGxAPZuxK6ggC0ao1ExiT1VY4k1sUZjTOwilthQY28UOyAioDRRmogFBKV5vz/44adGkcudAuY+a7kQZs7e79WXMzNnztlHQ6FQKJKyITIT0vMgV4EaNaKgrQHltMCyLFTVBY2kLIXicprcstT812hlBNp3MvO/MdWFBgb5zlSjRgzS8yAiAxKz4XYmaKbl5h9QG0+N2JTTyvcZwLM80Mx77YAaNWJT4LMcBWjKK0X...
2
science
grade-7
identify-how-particle-motion-affects-temperature-and-pressure
false
true
The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature?
"iVBORw0KGgoAAAANSUhEUgAAAmwAAAGZCAYAAAA0Im0SAAB8ZElEQVR4nO3de1zb9b0/8FcICSQkQAnlkpLeIbW1BQu2tlaLRV2dRN2cuuJm69HBqZfNDbbpZpUd3XQT3M7RWWn3m606qj1uOoOXo62N7WxXDS292Bp6o4WGlpKWEppAIHx+f6T5Nim3QAJJPnk/H1bgm+/3m3cCvHl/P7eviDHGEMEsllY0NBxHV1cnRCJRsMMhBAAgkUiQkpKKiRMnBjsUwjHKfyQUUf7rX3SwAwim3t5eNDc3g7FeSKXSYIdDiBeLpRXp6emQSCT...
[ "sample A", "neither; the samples have the same temperature", "sample B" ]
null
0
engineer
grade-8
identify-laboratory-tools
true
false
Select the test tube.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AABcpklEQVR4nO29ebQk2VXe++19TkRm3vnW1HP13JpnBEY8MG3gCQlkqdWtMhISy8IPZBAGzLKxeTzea4xttOy18LL8EBJ+WCAkdavoEhYYjGVwIxAgkNCAJCT1pB6qqmu+dcfMiDjn7PfHiZMxZOStW9XDvVk3vrXy5hSZNzIifvHtvc8QQKtWrVq1atWqVatWrVq1atWqVatWrVq1atWqVatWrVq1atWqVatWrVq1atWqVatWrVq1atWqVatWrVq1atWqVatWrVq...
2
math
grade-1
symmetry
false
true
Does this picture have symmetry?
"iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAArLklEQVR4nO2dd3zUVdb/P+c7MymEkoSmqCAdQRBMIaiIiEJAAXUFleZaUSKK7ur67FpGt/x03X2s6wqPLpKCiu5qCFVAUKQkIeCCEEooCZBCSGZSp37v+f2RBEMymZJMppD7fr18Sb5z77lnZvLJbefcS5D4HWZ+XK/Xj9+xY8d4ALjxxhu36/X67US0zN++dXQUfzsgkQQyUiASiROkQCQSJ0iBSCROkAKRSJwgBSKROEHrbwckdYwZM6YAwPZG/5YEAORvByR1+yC...
[ "yes", "no" ]
null
1
math
grade-7
parallel-perpendicular-and-intersecting-lines
false
true
Are these lines parallel?
"iVBORw0KGgoAAAANSUhEUgAAAKYAAADMCAYAAAD559hLAAALVElEQVR4nO3dW1DU1wHH8d+ygC5kd0HFSwQ1Ny94Q11CIKkTjUZkuThqdSaZdjTTTqZP1knT9iFxpnGmeUjSqX3ItBOnoX1oy0RtAoJ309gUUReCUbHeqs4CXmCV/W9gAwr/PsB/XYSFvfwvB/h9nnRvcx6+s7vnv+ccTLIsyyASTJzRAyAaDMMkQ7jPNwx5P8MkQ5Tt2AmPuzHk/QyTdFddtgdXak6j/uCRkI9hmKS7f7zzHgDg67+VhXwMwyRdVXy4C53t7QCA5kt...
[ "yes", "no" ]
null
1
math
grade-4
acute-right-obtuse-and-straight-angles
false
true
Is this angle acute, right, obtuse, or straight?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABwCAYAAAAkAwevAAALUklEQVR4nO3dbXCV5Z2A8evkhWwkJgw2EN2lxCi6M+BKi/ImY1tcUGfcglih0JZinZ21VkelW9RWWphu2+lILVWLL6iDLwu1bt24bhesbQEVRYESgpEWzBILWsKLhhA8GxLy7AcE203aDeF57uQh1+8Tc054/v+P15y573MyURRFSJIkSYpFTncvIEmSJJ1MDGxJkiQpRp0O7KbmhgTXkCRJkk4OnQ7sO5fPonZ3VYKrSJIkSenX6cA+2NzA7Cc/wfM1jye5jyRJkpR...
[ "obtuse", "straight", "acute", "right" ]
null
0
math
grade-4
elapsed-time
true
true
Look at this clock:What time will it be in 19 minutes?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADICAYAAADSmpa3AABUuklEQVR4nO3deXiTZdb48W/SJWmTNF2gaVnaQhdAoQWURWVTVETBDRhRZ5QRnZnfsIjLKI44zow4wrwzAyj4vjOC4jiISHFh3wQEHECQlgKCtEBZ25StaZI2Tdvk90doSki6b7Q9n+vqZXM/d57npMTrOrlznnMrnE6nE9EoLhReJvNyNlmXszlnNmIqNmOxW7HYC7HYrZiv/tdS4vpvvq0Af6UfenUI2kAN2oBgtAEadIFBaAM1aAKD0QVqCFPr6agz0DUslviwzrQ...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA7gAAADgCAYAAAApDMpcAABwSklEQVR4nO3deXhTZcI28DvpkrRJmi7QtCxtgbbsLSBlX2UTZFEBRR0RBR0/WcTRcRlBxxEV3hkHUPB9ZwRFHUSkqCyyy86wCm0BgbZAy9am0CVN0qZpm3x/hKZNk65Z296/65qL5jkn5zypOZ37OedZBACMICIiIiIihzAajcjWA+lFgLocKGPaJnIabwEg8wJi/AGFLyAAG7hERERERA6TXWLEqUJ314Ko5ekfAHi7uxJERERERM1JWpHp33BfoLPE9HSJiJx...
0
math
grade-1
count-sides-and-corners
true
false
Which shape has 3 sides?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAHp0lEQVR4nO2d31LbRhSHfwaSzqRJe9e0l71o+wh5jr5MH6+TSWCYcAEXQGwQYIYwODCDmYkkR5bFbi9kOsSx8Rqs3XPOnu8K439r8SFrz0/a07LW2s8lcDQA0lugslCUJ7PWAl6tAn+8AF4/B1qfh9ZufQk9LEUyb34C1pJBfeO358BfP9YWKspTSW+BgxzolcDhAFj5UtV3qGTKMnm1WjsFANktsHJ77w5FWSZ3To0ssBJ2KEosqGiKF1Q0xQsqmuIFFU3xgoq...
0
math
grade-2
select-three-dimensional-shapes
true
false
Which shape is a pyramid?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAARNUlEQVR4nO2dyVMc1x3HvzA9wzbDABIgJCRsa7OV2E7ZieVcrEMWVznl8iWVSxzn7H/Al1RO/htycqVSubhyyCVJ2bGV2BYpKbalSEILO0hiR2wGwQAChsnh16+7aXqml+menn79+1R1vaFn4dn68ub3fturKRQKhfkdYGwTWM8DewUwTNWh1ACZBHC2EehMATXzTwuF60/CnhbDOOdiM6CMbtIPXSngfBOpmmGqjfU8MJwD5naAkU2g9skePcGiZaqZTII0CgA...
0
math
grade-7
bases-of-three-dimensional-figures
false
true
Look at this figure: What is the shape of its bases?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADuCAYAAAADb3CcAAAfe0lEQVR4nO3df3DU933n8df+ktDPXSGBAP3kt4xByOBfYBLJaYBLMjnkqdPMJJ4CidPkLndnuel1cndTI2V67U3vXIRnOtPMxbZ8R3JN7BZ5rtcWaGqRALIdIzZgftkIFkn8EEiwC/qt3e/3/li0ICQwoK/2q109Hwyz0u5aesvij6c++uzn6zBN0xQAAAAASzjtHgAAAABIJm67B5gsgUBA586dUzAYlN/vlyQ1NTWNeZ7f71cwGBz3Y5SWlqq0tPSu91VVVUmSVq5...
[ "triangle", "square", "circle", "rectangle" ]
null
2
math
grade-8
compare-linear-functions-graphs-and-equations
false
true
Function A and Function B are linear functions. Which statement is true?
"iVBORw0KGgoAAAANSUhEUgAAAjcAAAGlCAYAAAAGbtd7AABQ2ElEQVR4nO3dfXxT9dk/8E+SJk2atLQUWgptoUWLaJEiYItSGSgCoreKgI8M+W26B5kPUzenG95uu9U5ndt96+aNzgfU+YBsPN1D9rKAFKF0bFKLQlXSQEtpWkrTND15zvn9wZq10DZJz2lOkn7er5cvJOf0ypVw5dsr1zk5UYmiKIKIiIgoQaiVToCIiIhITmxuiIiIKKGwuSEiIqKEElZzM2rUKKhUqn7/O3jw4BCnGb7XX38dKpUKJSUlUb/vjz/+OPicXHLJJVG...
[ "The slope of Function A is greater than the slope of Function B.", "The slope of Function A is less than the slope of Function B." ]
null
0
math
grade-1
am-or-pm
false
true
Mandy is playing games all afternoon. The clock shows: What time is it?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABaCAYAAACCNCH/AAAIgUlEQVR4nO3dT2zbZxkH8CdtRsg2zT6MdQO0FPFnm0T9QwI00NRuSFtzasVh6ikuAmoLaa44kPSy3diE1I5TK4GcCqE6k1DHKRUSbg/QiAmBEFI8CU0wpGUwgdgY9hjqRruGQ5qQNWvin/uLHTufzymy/dRPXvnw7ZvH7zu0uLi4GAAAQCZ29LoBAAAYJAI2AABkSMAGAIAMCdgAAJAhARsAADIkYAMAQIYEbAAAyNBwuy9svHY55v70blx+bzPboZ+NfmgoHvnMSNy...
[ "2:30 A.M.", "2:30 P.M." ]
null
1
math
grade-3
reading-schedules
false
true
Look at the following schedule: When does Basketball class end?
"iVBORw0KGgoAAAANSUhEUgAAAVsAAADbCAYAAADDCDKBAAB5uUlEQVR4nO2deVxP+ffHX5/2fV9kaaNU9gqVJRUioRRlH1thbGNnMNaxG2Qdy2BIKinL2EK2GUsRQiWpFIUSLdrP749+n/vt9vm0WTLD+/l43Meje97Lfb9Pn8+573ve53OPYKvHRQKDwWAwvihSANDPp9tXHgaDwWB8uxz/PQISX3sQDAaD8T3AjC2DwWDUA8zYMhgMRj3AjC2DwWDUA8zYMhgMRj3AjC2DwWDUA8zYfsdsOrQMRi4y6DbG/GsP5ZNISkvAwq1TsHD...
[ "3:45 P.M.", "5:00 P.M.", "3:50 P.M.", "3:10 P.M." ]
null
0
math
pre-k
tall-and-short
true
false
Which streetlamp is taller?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAGgAAADoCAYAAAADrKF5AAATlElEQVR4nO2ce3RdVZ2Av/O47/e9SdP0nTZp2tIXlbbQ8rAFHzBURRxEfCAO4wJndMbR0VlL1/gAcTmjArPUxVhHFESK0lGR4VEoFaTvB7aFljZN0jZJmzRpkuZ1n+ec+eMmacLNTdI06d33ur+1WDRn753z2/frb+999j63imVZVmMCjvVApwEpC0kO0RXwaVDhhhI7KI1xy9rVkeuwJEOx0g96VU/6h1I7VHrS9iS5o9OAI91wOgFHe0DtSKULpBwx8GlpFwB...
0
math
grade-4
is-it-a-polygon
false
true
Is this a polygon?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAD6CAYAAACbKDARAAAKpklEQVR4nO3df6zVdR3H8TcXMH/MmSEps7m5dDqJa9M/nBNyZZq7XsxQY+b0H9cqExFFsNSZm0WEiiJaLvuHsjSKXFwoqXQo2I8ZAmXT5a/RLA2Y6J2K6DmnP0i8XhTvj/e53/P9nsfjz7v7x/vP5+fsdc8d1Wg0GgEAAKToKPoAAACoEoENAACJBDYAACQS2AAAkEhgAwBAIoENAACJBDYAACQS2AAAkEhgj5Btb/TGWSuuiqN+cl6s2/xk0ecAANAko/wnx+b7+9Z...
[ "yes", "no" ]
null
1
math
grade-4
interpret-stem-and-leaf-plots
false
true
Mrs. Trevino kept track of her students' scores on last year's final exam.
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADSCAYAAABw17dKAAAqXUlEQVR4nO3deVxV5b7H8e8GZJLR0BJFEAwkFVO5HitNChVHUDG1umVO5XVI064Deq7lkNrVY+domg1KmalJHj2ZeiinHDIcKE094pBmhlO2gVRS4Ll/9HLfOOCQbllon/frtV+v7bPXbz2/temP7149+9k2Y4wRAAAAAKdwsboBAAAA4E5CwAYAAACciIANAAAAOJHLzJkzZbPZrvjo2LGjJOmZZ56RzWbTkCFDnN5EamqqbDab7r//fqefGwAAAChLbo4nbm4KDQ0...
[ "9 points", "13 points", "16 points", "14 points" ]
null
1
math
grade-3
correct-amount-of-change
false
true
You pay $1.98 to buy a bag of cat treats costing $1.22. You receive the following change:Is this the correct amount of change?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABNCAYAAACc5xPcAABCFUlEQVR4nO3dd4Bd93XY+e+tr7fpfQYYzKB3AiABEmBvYhGpTimW7Mjdlu0ku97EJc6ubWXXSbxJNrK8kmnHoWQViqRYxQKCBAEQRO/AYBpmML28Xu67NX+8mQEogh0S7fD3+Wcw8+a9d98B/jj34PzOkTzP8xAEQRAEQRAE4aqQP+oLEARBEARBEIT/lYgEWxAEQRAEQRCuIpFgC4IgCIIgCMJVJBJsQRAEQRAEQbiKRIItCIIgCIIgCFeR+lFfwMeV53m4rossV+5...
[ "no", "yes" ]
null
0
math
pre-k
ordinal-numbers-up-to-fifth
false
true
The first picture is a barn. Which picture is fifth? first
"iVBORw0KGgoAAAANSUhEUgAAAaUAAABdCAYAAAAFZHluAAAkIElEQVR4nO2deXzTRfrHP5OjTZrSlIIFUrkpqAu2VWBFKeCCCrtbQUVAd5VrBVekyOGquFqqIB6ACIqA5RB3VwVFsS6XHC2Hi78WWw4t0FY5pAWU0tK0SZqk8/tjcrY5vjmbNPN+vXbbfo+ZyeOL58nMPPN5CKWUgsPhcDicEEDU0gPgcDgcDscMD0ocDofDCRkCFpSq9RTdd11H2r5aVOv5CiGHw+Fw3ONVUPqyUo/sU1qXwSbvNwPO1jeiuMaIyUfrvR4gh8PhcCI...
[ "tractor", "sun", "barn" ]
null
1
science
grade-2
identify-animals-with-and-without-backbones
true
false
Select the animal that has a backbone. Hint: Mammals, birds, fish, reptiles, and amphibians all have backbones.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAEAAElEQVR4nOz9V7C12X3eB/5WePPOJ58vh84BDaARSAIEkwlRlDgSZUsaSeURJY1H5VG5aoJdurDscpDGnqCxVZqy7JKsaNGSKDGCokgQFAAiN9CNzt1f/k4OO+83rzAXBzO+GKqKmr6xq7iuTu3a5+Z9n7X2///8n+dZ4ltz75/KoKv4vfV763+Wa2nhvRyOGhhq+NTg4nP5e8D9vfU/99VV8FR28ffK/k+fy98D7u+t/yWs/w9OW/8/faZ/py/+J//yB7CupKk...
1
engineer
grade-7
identify-the-experimental-question
false
true
Identify the question that Emir's experiment can best answer. The passage below describes an experiment. Read the passage and then follow the instructions below. Emir used a dropper to put equal-sized drops of pure water, one at a time, onto a penny. The drops stayed together and formed a dome on the penny's surface. E...
"iVBORw0KGgoAAAANSUhEUgAAAUwAAAESCAYAAACW6uzYAAEAAElEQVR4nOz92ZNk2X3fCX7OOXf1JTz2yH2pzMqsDUChABIkCAoUJDUpNklp1LKRpsdaZm39MA9qG7N5mTHrv2Gm50VmY9acnnnTtLrVsla3TUvQiAu4ACSBQhVQlbXlnpERGavv7nc958zDufeGR6EAFBcRhUL8zCJvpLuH+3X3c7/nt3x/35/4p//0n1rO7MzO7Mx+iuy//q//65/I63oA/+yf/bOfyIuf2Zmd2Zn9ee2//C//y5/Ya8uf2Cuf2Zmd2Zn9lNkZYJ7...
[ "Can pennies hold more drops of pure water or water mixed with hand soap?", "Can pennies hold more drops of water mixed with dish soap or water mixed with hand soap?" ]
null
0
math
grade-3
identify-parallelograms
false
true
Is this quadrilateral a parallelogram?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABcCAYAAABUbcLiAAALe0lEQVR4nO3dy3NT5x3G8edIsiwj2ZYMqQm3OGSAEGhCx4HgBEjixJDYBmPaTfsvdJfpql132UWX3XbVTcPFgM3NDYxDoEDKhMQJ0MbcCSGA8FXW7XRhco69SHx75XMkfT+r9/UY6bfRzMPjV++xbNu2BQAAAMCIgNcDAAAAAKWEgA0AAAAYRMAGAAAADCJgAwAAAAYRsAEAAACDCNgAAACAQQRsAAAAwKDQTH7pyIGk7t1JKxojjwMmZTK2LMvSr39bp2iUzxcAAKX...
[ "yes", "no" ]
null
0
science
grade-4
animal-adaptations-skins-and-body-coverings
true
true
Leaf-mimic katydids are insects that live in places like tropical forests. This katydid is adapted to be camouflaged among green leaves. Which animal is also adapted to be camouflaged among green leaves?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOydd5wV1fn/3+ecmXvv9gV26aBSRREQeyOiYiVW7B1LojGJGg2axPhTE0uwRUVjjT0aFGtiBCUWMAoiYheRKm1h++0zc87vjzP3bqGtiJqvuZ/Xa2H33rlnzjxzZvd5nvN5Po8wxhjf99FaU0ABBRRQQAEFFFBAAQX834SUEsdxEJ7nmYJzX0ABBRRQQAEFFFBAAf/3IaVEFpz7AgoooIACCiiggAIK+GFAa438vidRQAEFFFBAAQUUUEABBWw5FBz8Ago...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOydd7xkRZ32v1V1Qoeb7507OSdmYJghDBkEARXFAGIgmDAtrq+rrizqruuiru4urIv5VXwVMwoSBEWikmEYhhkmMEzO4ebbt+M5p6reP6q7584wyKiz6rr9fD4jfbtPn1OnTlVbT/2e3/MT1lqbJAnGGBpooIEGGmiggQYaaKCB/5mQUuJ5HkKIP3dTGmjgrxKyQZwbaKCBBhpooIEGGmjgfz6MMSRJ8uduRgMN/NVCNohzAw000EADDTTQQAMN/HW...
1
math
grade-6
interpret-graphs-of-proportional-relationships
false
true
Mitch loves to play the piano but doesn't like practicing the exercises his piano teacher assigns. Mitch knows the exercises will help him play better though, so he tries to motivate himself using his favorite treat — chocolate chip cookies. The graph shows the proportional relationship between the amount of time (in h...
"iVBORw0KGgoAAAANSUhEUgAAAisAAAI0CAYAAADcLmlmAABVvElEQVR4nO3deXiU9b3//9ckk41sA4R9CVIFRQEX9k2sp9avW1kFzrF1O3y1bq21/bVf22/PcaPLcelR62Vpqxxbfz8LAtYNLaVlCxI2AcENVMIOGZLMTDLJrPfvjyxMSIBMmJn7vpPn47p6XeVOMnlnnMy88prP/bkdhmEYAgAAsKg0swcAAAA4E8IKAACwNMIKAACwtE4RVqZMmaI33nij6d9vvvmmLrroIkWjUfOGAgAAbdIpwsqIESO0e/fupn8vWLBAjzzyiNL...
[ "When Mitch practices for 4 hours, he gives himself 2 cookies.", "When Mitch practices for 2 hours, he gives himself 4 cookies." ]
null
1
science
grade-3
read-a-thermometer
false
true
Select the temperature shown by this thermometer.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAGQCAYAAADbbRRJAADCdklEQVR4nOydeXgT57X/v1pGsiRblhcZ8AI2YBswBEMIxoaEgJOQBdIlqUnubRuatr9c0jWhbdrcdE1vetOG7k2aZiNtc9uQrY3JjiEhCVsIGLBNLAO2sWxA8iIvkmyNlt8f8gySNSNvM7Itn8/z8IDfGc/7Csuj75z3e85RBAKBAAiCIAiCIAiCiAuUE70AgiAIgiAIgiCkgwQ+QRAEQRAEQcQRJPAJgiAIgiAIIo4ggU8QBEEQBEEQcQQJfIIgCIIgCIKII0jgEwR...
[ "55°F", "45°F", "35°F" ]
null
1
math
grade-6
classify-triangles
false
true
Is this triangle isosceles?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADPCAYAAADPn6YPAAAki0lEQVR4nO3dfVyVdZ7/8Tc3ERJKkGikmKjHpEkoyMRuyIzZmaF+s+yODWbSOBZTs5FNE1uzDytvs5TJMrbdMJvBinEmxKOCkCLSyZvQtKRIzUwmUzJFU9QjHDxcvz9caJo0BQ5c5+b1/K8jfK+39s/byw/fj59hGIYAAAAAuIS/2QEAAAAAb+KzBXvSpEm64YYb9N5775kdBQAAAF7EzxdHRA4ePKi+ffu2/feECRM0d+5cRUVFmZgKAAAA3sAn32CvXLlSkhQT21t...
[ "yes", "no" ]
null
0
math
algebra-1
identify-linear-and-exponential-functions-from-tables
false
true
Is this function linear or exponential?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEqCAYAAAAvYSeKAAAe+UlEQVR4nO3de1TVdb7/8ZewQUwM0yXJoFtu/qRQE/MyOkqKRvOTNZWCqTExerzWL8cml+S0EtGm1pJo6tRo5qWEdDTRGRqVAi/lIpV05gTmKFOTmzwmhpc8G1Cue//+cLXPcFCB02eLG5+P//js7/f7eX/96ynry3d3uLLX1ykP4PezY6o+0L+tx/hR/GJr2noEAAAAuJlXWw8AAAAAtCcENgAAAGAQgQ0AAAAYRGADAAAABhHYAAAAgEEENgAAAGAQgQ0AAAAYRGA...
[ "exponential", "linear" ]
null
0
engineer
grade-6
identify-the-experimental-question
false
true
Identify the question that Finn's experiment can best answer. The passage below describes an experiment. Read the passage and then follow the instructions below. Finn divided 40 unripe bananas evenly among eight paper bags and sealed the bags. He poked 20 small holes in four of the bags and left the other four without ...
"iVBORw0KGgoAAAANSUhEUgAAAUwAAAEICAYAAAA0p80lAAEAAElEQVR4nOz92bMtyZXeif18iIi9zz7TPXfKOZGZGAoFFAo1sItVqC6y2C2SklmrZZSsJZPpTaan/l/a9KQ3WetFL5JKTbXMeiBpJIs1oUYUCjMyE8hMIKc7nmlPEe6+9LDcI3zvexLUi5CQGSNxcM7dQ4SPy9fwrW+Z//K//C+F/3D9h+s/XP/h+v+j67/6r/6rT+W5HuAHX//X9H3PMAwYYzAkAFrf0LYtQqTve0xKOOcwxhBjxDmn76e0c1NjzM5vEcE5N363XNZ...
[ "Do bananas develop more brown spots if they are kept in bags with holes compared to bags without holes?", "Do bananas develop more brown spots when they are kept at room temperature compared to in a cold refrigerator?" ]
null
0
math
grade-8
front-side-and-top-view
true
true
If you look at this object from the side, what will you see?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAE2CAYAAABbdeVqAABJ9UlEQVR4nO3de0DUddo28GsYBJTBwdQFxRxGVpK2HLBXezWWAXvVV3dXFB/TNxM85XrYBKTc2lIg7GnXEkZtsTaPuPl4WBHdolZTBiItLZjRWswTA4rAZjIKKiAw7x/D/BI5yGGOcH3+WZrDb+6pXffi2/27b5HBYDCAiIiIiIjMwsnWBRARERERdScM2EREREREZsSATURERERkRgzYRERERERmxIDdDWk0GoSFhUEul2Pnzp22LoeIiIioRxFxikj3odfrERsbix0...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA6AAAAE2CAYAAAB/Zf/GAABSg0lEQVR4nO3dfVzUdb7//weCgIoOpi0Y5oCupLvliH21b8U6YF/1l7srXnxNTyZebuvFSUGqU1sGZH3brRTMPdpuXuKpo7UqumW7ugoY5aa7wGQdzCsGFYHNdBRUQHB+f4xMmaIgA8Pg83677S1hZj7znArXZ+/X5/32stvtdkRERERExCW8vLzcHUGkxWrj7gAiIiIiIiJye1ABFRERERERkWahAioiIiIiIiLNQgVUREREREREmoUKaCuUl5dHdHQ0YWFhrF2...
1
science
grade-2
identify-mammals-birds-fish-reptiles-and-amphibians
true
true
Mammals have hair or fur and feed their young milk. A gorilla is an example of a mammal. Select the mammal below.
"iVBORw0KGgoAAAANSUhEUgAAAtMAAADMCAYAAACx6y9WAAEAAElEQVR4nOz9ebwlVX31j7/33jWc4c5DjzRj04wNMgUFQYkDgzgggyIIEQd+OEMSQROjxOfRRIizJqAgCCQqj/ErGg0gMYigMoqgMk/dTc+373CmqtrD749dp+69NEPTXG1Nar1e59V9z6lTtU/Vvueu/an1WUs455zWGmstJUqUKFGiRIkSJUqUeG5IKQmCAJFlmSuJdIkSJUqUKFGiRIkSzw9SSmRJpEuUKFGiRIkSJUqUeP6w1iK39SBKlChRokSJEiVKlPhTRUm...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA4IAAADMCAYAAAAmsx3gAAEAAElEQVR4nOy9ebhkVX3u/1nT3ruGM/Q5PUPTyNAyIyiKoigxKhAcwYFoNJrB65SoiUqixnDNT40aJQ65QSNxAKPhGi8OUTFGCYJRQCSgCChTM/REd5+hqvbea/r9sXZVdzM22BGvt97nOQ/0qV27Vu29qs561/v9vq+IMUbnHCEExhhjjDHGGGOMMcYYY4wHhpQSrTWfW1/xmBnDEiMe7iGNMca9YpuNXL7VclMvEoH9OpIXrcmQYxI4xhhjjDHGGGOMMcYYDw4...
0
math
grade-5
interpret-bar-graphs
true
true
Some students compared how many pets they have. Which bar graph shows the same data?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAC9CAYAAACJdQrFAAAfsklEQVR4nO3de3RU9b338c9ccychgEAChAABgyGEywkHFWK4VhRRLlXLAwhWjVXxoMLhQGyLGLSBal3VRzAPLaW2ipSLRKJCKRK5aI9EaEVrRC4F5BJIIASSzPX5IzAQbmbIDoOT92utrMXs2bPn+9szf3zmx3f/tklvlHkFNHLeh2ICXQIAAAgS5kAXAAAAAAQTAjYAAABgIAI2AAAAYCACNgAAAGAgAjYAAABgIAI2AAAAYCACNgAAAGAgAjYAAABgIAI2AAAAYCA...
null
[ "iVBORw0KGgoAAAANSUhEUgAABLIAAAFsCAYAAADYEJABAABXW0lEQVR4nO3dd3xUVf7/8ffMZCaTHpJAQgm9hpJQJCIdUYqiAjZsq64Krru2dVm/Lu5+Lbi2VXdXVxd/KqK7Fr6AigQF6UWC0kPvnVRIz/TfH5GRGEpCJpkMeT0fDx4+5sy5537uzQjJO+eca5DkEQAAAACf8Hg8OmGX9pRIhS7JyXfbAABctCCDFGGSOoRK8RbJIIIsAAAAwGdO2DxaW+DvKgAAuPSkRkpB/i4CAAAAuJTsLin/b1OL1Cms/LfIAADg4hS6pJ3...
0
math
grade-8
identify-linear-and-nonlinear-functions-tables
false
true
The table shows a function. Is the function linear or nonlinear?
"iVBORw0KGgoAAAANSUhEUgAAAFQAAABeCAYAAAC98DOnAAAGxklEQVR4nO2cb0hTaxzHv9t0YmnCjP4pazNLayVM00XZCBQpI+pFt1FRECtrUokII4hhREViMRNqEkyYFkT3RetFl/RNhBBCVMz+QH9olavgZBFz65+dPfdFNNrV2/WcfmfO2/OBvfA5x9/v4cM5zx72/Pjh4pUeNhmYLPNUg0MKF0oMF0oMF0oMF0oMF0oMF0qMYkLtdjuMRuOoz8GDB5VKKZsHDx7AZrOhuLgYFRUVOHLkCL5+/SorVhrx3OJEo1FUV1fDbrcnjM+...
[ "nonlinear", "linear" ]
null
0
science
grade-6
compare-thermal-energy-transfers
false
true
The table shows the same data about how the temperature of each vial of insulin changed over 15minutes.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAABfCAYAAACdpLOcAAAju0lEQVR4nO3de1hU1foH8O8gt5GLCIimqIyo3IQRyQtFqGDWIQzB1FIzNVMTBSpFCyUVvEZH0TxWapJmSt44R6TyioI3OKKSpigXA7RMFAW5DbffHx74CTPADMxwGb6f5+HxefZea+13rdlrfGfP2nsE2PRyJYiohsOuoRhzZklLh0HUpnEeEcmncl58S4dAakajpQMgIiIiIiLlYYJPRERERKRGmOATEREREakRJvhERERERGqECT4RERERkRphgk9EREREpEaY4BM...
[ "Thermal energy was transferred more slowly into the vial in the refrigerator.", "Thermal energy was transferred into both vials at the same rate.", "Thermal energy was transferred more slowly into the vial on the counter." ]
null
0
math
pre-k
count-scattered-shapes-up-to-10
false
true
How many triangles are there?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAFhCAYAAAAFo971AAAl50lEQVR4nO3dT28bW57e8ef+aUwGM7NJB40MkEGADm4mk00wA/Sig8EEGQRZZJvdLLPKi8gyb+UKlgSoBdtKWy27YQu20aJo0aYkSr60/tkWJdi8vENRlEmzyMri2G1bpkyJrKpT55zvBxCmLVNVD490xw9LdX78Ko7jWAAAAAC88LXtAAAAAACSQ8EHAAAAPELBBwAAADxCwQcAAAA8QsEHAAAAPELBBwAAADxCwQcAAAA8QsEHAAAAPELBBwAAADxCwQcAAAA8QsE...
[ "3", "5", "7", "6" ]
null
2
math
grade-3
coordinate-planes-as-maps
false
true
What is at (6, 5)?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAFjCAYAAAAHNnwuAABijUlEQVR4nO3dd3zV5d3/8dd3nJGTDYQRtiyZIijgBKni1rbaam/1pm6L666V6q/q3butd6u2tWpvtY5ba1vXXS2ljtZFFfdIwQUqskdY2Tn7O35/hBwJSYBA4BDO+/l4HE3OOd/r+mRw8s6Vaxi+7/uIiIiIiEinMLNdgIiIiIjI/kQBW0RERESkEylgi4iIiIh0Invrdx599FHefvttAEaMGMEll1xCKBTKSmEiIiIiIl1RZgT77bff5sMPP+TXv/41d911F6lUirl...
[ "car dealership", "restaurant", "bank", "harbor" ]
null
2
math
grade-8
identify-trapezoids
false
true
Is this polygon a trapezoid?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACXCAYAAAAvQiyVAAATVklEQVR4nO3deXCUZYLH8d/b6YQcCAkQIRyCEK4oJAg4YawlOiULoiMuMgKFrDMcC4PMTAirC6JcjuDocI0sCwx4jLoe6yh44CCzI1A1EgWEgAJyROUKLBBCIFen0+/+kdgQByXBTj/db38/VZT2U8T++UeKbzWdfizbtm0BAAAACAiX6QEAAACAkxDYAAAAQAAR2AAAAEAAEdgAAABAABHYDeXIEWnvXtMrAAAAEGQEdkN5+mmpd2/pzjsJbQAAgAhCYDeUgQOlZs2...
[ "yes", "no" ]
null
1
math
grade-5
types-of-angles
false
true
Is this angle greater than, equal to, or less than a right angle?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABzCAYAAACil3UBAAAKHklEQVR4nO3dX2iddxkH8OfknPasyUmaNkuqq0uT0E220TYbin9u7FjBO91AVNzFugt36xRBxxA6EPVCXMVLEaeggiBb8UZxgyrCFHFr0mHBrk26P93aLm3aJmmz/DlenJyTtMv+Ned9X/Oez+fmNO97kvxyevPl4Xmfp1CtVqsBAAA0RVvWBwAAgDwRsAEAoIkEbAAAaCIBGwAAmugDB+zJqYX41XNn44HvH4uDh04neSYAAFi3Su91c3JqIQ79cyKeeX4invnH+cb...
[ "equal to a right angle", "less than a right angle", "greater than a right angle" ]
null
1
math
pre-k
represent-numbers-with-pictures-up-to-5
true
false
Which shows 1?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAXIUlEQVR4nO3deXSV5aHv8e+7pyQ7MwkJCWQCwiBCglQwgmKQeiqFIK3Sai3TaW+vV8Qez1q357bXU7XLc7pWV7vEOtyeVgYt3q7aKyJK5ZyqICAYD4QwyZiQhDAEkuzsjHt87x8xUWQwoMnDvf4+a7kE9pu997vhu553fLZl27Z9OghHO6A1AmEbEeknLgsSnVDohUwPWKcDtl3uN/22RL56piSB60hH92+yPDA6vrtOEekfrRE41A6ngnC4Axz+cPcDik+k/yU...
0
math
algebra-2
linear-functions-over-unit-intervals
false
true
How does f(t) change over the interval from t= – 4 to t= – 3?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB2HUlEQVR4nO3deXgUdbo3/G91d/aFhAQSiCQsgUAwQZEkgqAgKLgewQXHBUF0xjmPM++Z95kzr8+MrKKvz3nGM+94HM+4IKijM6MjOgMYECQsgiQQIZCAkATISpZOOp3u9FK91PtHTCZhSzfUL9WdfD/XxaXpdH1zp6q7+u471VWSoigKiIiIiIhIFTqtCyAiIiIiGkjYYBMRERERqYgNNhERERGRithgE1Evu3btwujRo3HPPfcAAO677z58/vnnAIDz589j+/bt+Oy...
[ "f(t) decreases by 2", "f(t) increases by 2", "f(t) increases by a factor of 2", "f(t) decreases by a factor of 2" ]
null
0
math
pre-k
circles-squares-and-triangles
true
false
Which shape is a triangle?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACQCAYAAADwZHJxAAACWElEQVR4nO3UOW4UURhG0b/bQ8CYgQgIgSWwLy+EhbEDhowAk9rYko1bRVBCIse6JZlzonp6QX3B1dsty7Kc3858vZ65PMzcLQP/7Hg38/Ro5s2jmZenM7vzm2X5eLH1LB6y989mjr9cr4dXpzPvHq8Vwr+6PMx8upr5fjvz+Xpmf3G3XoiM+/T0aG1qZubnYWZ/+OsC7tOfpn4tM/ttp/C/EBoJoZEQGgmhkRAaCaGREBoJoZEQGonjrQd8+PBt6wn/hbOz15v...
1
math
grade-1
select-three-dimensional-shapes
true
false
Which shape is a rectangular prism?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAQdUlEQVR4nO2dW2wb2XnH/0NyhkNSEnWjSEq+yF57XWyAddrd1gm66LZN0AApNgWKpEDRbh/Tpz4k2Jc8BQEK9K3tcxH0Ie72JUAKJGiBIl4XNZzN2uvd+LK6W7YlSxYl2STF+515mDnDu8QhhxrynO/3YnlIkZ/lH4++Oec735Gq1Wo1UgAeZ4BkGShVQRBDh0sCxp3AZS8QVAApkq9W7ybsDosguufaBODayGh/CSvAFZ9mNUEMG8kysJYG9grAegZwJEraAyQ...
2
math
grade-6
understanding-percents-strip-models
true
false
Which model shows 80%?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAVAAAABLCAYAAAAmjt81AAACIklEQVR4nO3XMW4TURSG0Tu24yIk0CAQBWVgCdmEWQY9S6FnF+BVZAfBdBQYQWUnlhJiPYpRJCQgUv4EjMM5zcxo9KQ7zac7XWutzc+rPqyqluuqi1YA/MKoq9ofVh3sVj0eV3Xzs9aOFpseC2C7HN6vGs1W/cOTcdXze31dAfjZcl11fFr16bzq/apqsLjoX4gnwNX2h30rq6pO1lWD9Q8vALjaZSu/tarBZkcB2F4CChASUICQgAKEBBQgJKAAIQEFCI3Sg5P...
0
engineer
grade-8
laboratory-safety-equipment
true
false
Select the gloves.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AABAqUlEQVR4nO29d7xkV3Xn+1t7n1jp5tutbrWkVkAoWiCSQTIIcCAZbEsyfgSPnGTGHzx+DoOfx++N7LE/H489Hg8ef5jBCLAxPH9o0mOwwRpjJIxsgxCSLBEkJNTKHe69fWPViXuv98epqlvh3Bwq9P7yaVTnVNU5q+456+y1116BsEucDoK/JOCdu3W8Nfgr5XnvOkhU3ePzGAxDBe3GQWaq1WshxD0AxG4cbz0Y+CYR3TjleY/s9bkMhmFhdxRTiD/YtWNtAAF...
0
math
grade-3
lines-line-segments-and-rays
false
true
What is this?
"iVBORw0KGgoAAAANSUhEUgAAAG4AAABuCAYAAADGWyb7AAAET0lEQVR4nO3bzWucRQDH8e8mYrLal0Qb2uSk9VLaQsvGF+yamrulDSpSoZB46CEiuP4BzSH03hSFHHowgqKFQlvwIgrW2m2gaNlDE3r0tEuJdlNbu7tKfDykXZPsS7O7zzPPzPP8vrdnycDAhyGz+8wkPM/zUM7VFfYEVHsJztHWwc1kf+by4kJYc1Et9NTahxf6+xn7co7nepN88sZhPjqUpq83GdbcVJMSGzcnO05P8cfDUvV5IvUyH6dHODg4ZHxyqnE1cKd//IF...
[ "ray", "line", "line segment" ]
null
1
math
grade-8
identify-functions-graphs
false
true
Look at this graph: Is this relation a function?
"iVBORw0KGgoAAAANSUhEUgAAAQ4AAAETCAYAAADH+ejgAAAVfUlEQVR4nO3dW2yT9/3H8Y+T5uRwiNp/Dlr3X6CijRXCP0FASDYNES6mBcgQTIWplSrRrReV4GoX7c3QtK6oSNtVQ7epE3SbJo1qmpBwR6VKDReTclgj3DZBYdrkoGolGAoO1IlDDv5fhNh+bJPEju3n9H7dLHYenvxW8Ce/4/P1xGKxmAAgCyVmNwCA/RAcALJGcADIGsEBIGsEBzKKRqOKRqNmNwMWRXAgo0AgoEAgYHYzYFEEBzLq7+/XwMDAY7/f29ur7u5uffH...
[ "no", "yes" ]
null
1
math
grade-4
fractions-of-a-whole-word-problems
true
false
This year at the school baking competition, Brianna won first place for her peanut butter cheesecake! She decides to give her cheesecake away. She cuts the cheesecake into 6 equal pieces. Brianna gives 2 pieces to the new girl in her class. Which model represents the fraction of the cheesecake Brianna gives to the new ...
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJ8AAACfCAYAAADnGwvgAAAXVklEQVR4nO2dZ3hUZdqA75RJn5mUSa9ACkmkSRIIvYiERcRdUXGtKOqnIK5bFFBXRQHbunz6hcWKZRHbAovSBENTpFiCkIQklJDek2lJpiTz/Rhg0RUMZM45M8m5r4uLDEnO+zC5857yPO/zutlsNlutGY63gb4TrDZkZATB0w2UHpDkB+Fe4FZrstkO6qQOS6avMUIFnqVt9heRXpDibzdTRkYI9J1QbIQaM5S0gbvOav+ELJ6M0Cg97J4BGDrBvfO8T8jICM1...
1
technology
grade
logo
false
true
This is (part of) a (former) logo of which computer related brand?
"iVBORw0KGgoAAAANSUhEUgAAASwAAAEsCAYAAAB5fY51AAA0a0lEQVR4nO3d6ZNc13nn+e9zzs2sDWsBxEIS3ERS3ERSpERJlGytblOW27LsnmnPtMPtdr+aiZiYeTMxM39Bz9uJmIhud3S07fGMbLdbomRbC0VTEkmTIkGQBLiBAAFiB2pB7Usu997zzItzMyursAMFVF7k81GkiKrMysrKvPd3zz33OeeIqirGGFMCbq1fgDHGXC4LLGNMaVhgGWNKwwLLGFMaFljGmNKwwDLGlIYFljGmNCywjDGlYYFljCkNCyxjTGlYYBljSsM...
[ "Android", "Wii", "Corsair", "Nvidia" ]
null
0
science
grade-2
compare-temperatures-on-thermometers
true
false
Select the thermometer that shows the lower temperature.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAHEAAAFICAYAAABnfBEBAAATXUlEQVR4nO2dW4wjZXqG3/Khew5dxU7UwxxcggUCYxOJMBrkQooSFLABsSwwDpFQ1OC5yJXBSOxetOmONlKEJx4phEhW5mqluKf7Aq20NprVJrtqh1Fgyaq86ZCRImqAIOWiip5lIaOx59A+Vi7cLuw+eeyu8nR/9T1Sq9tVdvkfvfPWf/Dr7xdM0zQv14D/uQFUmkDDBLPD8QmA6AXu3wccGgOEy1XTLJVvd7OYYVEkwPf5jfaDI2PAsf1thZmdTaUJfHodWK4...
0
math
grade-1
find-the-next-shape-in-a-growing-pattern
true
true
What shape comes next?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADhCAYAAAC9ZMGZAAAafElEQVR4nO3da3Ad5X3H8d/uuUiWZAtsYu6xE5dAyiUhE8JkCqHpdHJvWjoJ7eRN0vRVOtMmmTbTFwmTJmE6nbSZIQyXJJQASWHKpY0TiA3BJhhMMDINIcQXCMYWtmTdLCFLR9I5e+uLg43Als51d599zvczwwssnX2e//Psc+Z3nrO7cqIoigQAAADACm7aHQAAAADQPgR8AAAAwCIEfAAAAMAiBHwAAADAIgR8AAAAwCIEfAAAAMAiBHwAAADAIgR8AAAAwCIEfAA...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAz4AAADhCAYAAAAJS2C/AAAgLklEQVR4nO3da3Bc5Z3n8d85fZEsyZItB9nGGJs4YDIEElMBig2XYWorYUiWGaZy2cqLSTapmqrdqsmldqb2BUnlRm3NZnerkhSXZLyZhMkmNVxqQgIxIWCCuQRbZuMkjI0xGFtgybpZsiy1pO4+l33RsRFYsqTuc3nO099PFS+Q1ec8/+c5R31+5zn9tBOGYSgAAAAAVnAcJ+0mGMlNuwEAAAAAEDeCDwAAAADrEXwAAAAAWI/gAwAAAMB6BB8AAAAA1iP4AAA...
1
math
grade-4
fractions-of-a-whole-word-problems
true
false
Kylie and Tim are having a picnic at the park. They have brought a small apple pie as a snack. Tim cuts the pie into 3 equal pieces. Which fraction model represents one piece of the pie?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJ8AAACfCAYAAADnGwvgAAAQA0lEQVR4nO3de1zUdb7H8RcwwIDAgCDMAN5vhMolS8xs85Jl3Cwzs1rt5KnUTDe1jbzfNy07dSr0qJW1ZXVSVK5ul7O5anW8Bpi6ammFMsOiCMptEJz9A2nNzVL0+/v+Zvg+Hw8fPhD9ft48Hm9/l/nN7zduDofDYauDb6vhbAPUO1AUIQxu4O8BXX0hzAvcbHaHY+cZ2bGUliYhAAxHqhu/sHhB91aNzVQUEc42wKEqsNbB4WpwP1Pf+A1VPEU0f4/GngFUNoB...
1
math
grade-2
write-subtraction-sentences-to-describe-pictures-up-to-18
false
true
Which subtraction sentence does the picture show?
"iVBORw0KGgoAAAANSUhEUgAAAfQAAABkCAYAAABwx8J9AAAdbElEQVR4nO2daXAc552fn+6eGQwwgwEwuAcgDoIUeAgkQVEUuUuvJdmry7u2tignVWaW5tqbpJJKtrLfUq4klVSyW94vScpO1VacVMLVhq6tXclxeS3LOizb0UGKlkBKPEEQBAmQuK8ZYM6e6c6HBmYwOAczg4PD/1PFktAz3W8/bPz5e9/ut7sV0zRNBEEQBEF4qFG3egcEQRAEQcgdCXRBEARBKAAk0AVBEAShAJBAFzaVW7f7tnoXlpDNPonHxiEe2wvx2F6stk+...
[ "12 − 8 = 4", "13 − 9 = 4", "12 − 9 = 3", "11 − 9 = 2" ]
null
2
science
grade-3
use-data-to-describe-world-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/cTiKAADl8UlEQVR4nOzdd3xUZdr/8c+k954Q0kgCIRASUoAkBEIRQRRBqoqioK6P9be4q7vWXX18VtctuvbdtWJHUEAIBJUWemgJIZBAKimUFNLbtPP7I+RISNAgk0zQ6/16oZkzZ+Z8Z85kcs09d9EoiqIghBBCCCGEMAkLcwcQQgghhBDil0QK7KtQWloaGo0GjUZDXFycueOIX6Fly5ah0WiIiYm54vvy8vJSX88d/ywsLPDx8eHOO++ktLT0ygP3sTfffBONRkNwcPAV31d...
[ "Winters have much more precipitation than summers.", "Winters have higher temperatures than summers." ]
null
0
science
grade-5
compare-properties-of-objects
false
true
Which property do these four objects have in common? Select the best answer.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADQCAYAAAByQhWRAADJFElEQVR4nOz9d3gc95mmC99V1Tmh0UAjZ5BgAIOYcxAlUdmWbVmSLSs4zI7tnXG89uw1Z785O9eMwxzveHY96/GesT225ZElS1bOiaIlUswBRCJyDg10N9A5V9X3RwMtgqIkSqIEhrp1lbrRobqqWF391FvP73kFVVVVgEQiwfj4OKFQiEwmg4bGfKPT6XA4HJSWlmIymT7Wz9L2f42LDW3/17iS0fZ/jSuZC7H/C6qqqvF4nN7eXqqrqzGZTOj1+gu8qBoaH5x0Ok0...
[ "smooth", "salty", "opaque" ]
null
2
math
kindergarten
count-money-pennies-and-nickels
false
true
How much money is there?
"iVBORw0KGgoAAAANSUhEUgAAAMIAAACDCAYAAADf5cT4AABvuklEQVR4nOy9d3Sd53Xm+/vq6RUHvROFAHvvpHpvbrETJ7Encey0uSlOv85M7mQyc2flZuLczCS+cewkdhJ3S7YlWY0SJZFi7xUESAJExwFwevn6d/84wLE0kWVS1Zlgr4W1QAA853ve8+733eXZewuu67osyZL8GxfxvX6AJVmSHwdZUoQlWRKWFGFJlgRYUoQlWRIA5HfzzUytTLFYRNc1ysUilqFTSs1g2C6yLOMJx/D7AwRDYVSvj0AoiCCICILwbj7mOyJL2H+...
[ "5¢", "12¢", "10¢" ]
null
2
math
grade-3
is-it-a-polygon
false
true
Is this a polygon?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAD/CAYAAADL5aGiAAAb6UlEQVR4nO3dT2wb553G8YehpBlJlobeZkltAVO8UOYhQnRQEAExYAMpkCA+xGgP282lzanZ0+6tx0WPvW1P25zSXvrnsMH6EMMBasABHEBBdVCgHCTxQtFAl2KzCWlH8oxomnsYzoj6Y0eUZjhDzvcDFG2dQHrj1sDDn57396Y6nU5HAAAAAALxUtQHAAAAAEYJARsAAAAIEAEbAAAACBABGwAAAAgQARsAAAAIEAEbAAAACBABGwAAAAgQARsAAAAI0FjUB0iChzs...
[ "yes", "no" ]
null
1
math
grade-5
acute-obtuse-and-right-triangles
false
true
What kind of triangle is this?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACwCAYAAAA16xkbAAAaQ0lEQVR4nO3df1TVdZ7H8df9wU9/sSLkb20gLVwtRs3MNODWXQpWDE2vjliKkbJ7WnZKa6ZtmklnRpudk3TCUBuHacYw15vNDu0mOyW1M7RGzQ4azkiGOhjNkiRF8ivg7h8Gafkj5ML3Azwf53TOeLl8P+/r/PPyc17387H5fD6fAAAAAPiF3eoBAAAAgL6EgA0AAAD4EQEbAAAA8CMCNgAAAOBHBGwAAADAjwjYAAAAgB8RsAEAAAA/ImADAAAAfkTABgAAAPyIgA0...
[ "obtuse", "acute", "right" ]
null
1
math
grade-3
certain-probable-unlikely-and-impossible
false
true
If you select a marble without looking, how likely is it that you will pick a black one?
"iVBORw0KGgoAAAANSUhEUgAAAJkAAABmCAYAAADYmDN2AAAleElEQVR4nO2deZQd9XXnP796r1f1rm6h7kYLWpDEKonFgI2IDYjYzkyMl4F4CTOJT4ztnMk4xHNmznFikzE5tjPHdsYz40zGh2wQMzFMwMfjGUNMADE2IBsQlhBgtSQstaRWr+q3v1f1u/PHb6l63S3obnXLauZdDqdUVa/fq/rVt+7y/d3fvUpEhJrUZBEl+GVfQE3e+pJejC8dKZ7i5fHDHM0NcyI/yvH8KOOlDCuaOjmvqZPe5uWsbF7OpV3r6GxoXYxLqMk5JGq...
[ "unlikely", "impossible", "certain", "probable" ]
null
1
math
grade-7
parallel-perpendicular-and-intersecting-lines
false
true
Are these lines parallel?
"iVBORw0KGgoAAAANSUhEUgAAAF0AAACVCAYAAAA6yvYaAAAJ7ElEQVR4nO2dfVBU1xmHfwsIfhEtNgUzikhhHLWOuNsaZ6fKWpOxIo0fxZiGScCxfqAV41cR0UoiSiymYtWKthbRgUqCH2lUGEcHSCMimgVHwVh2dCO4QFQk7gYFdjn9A8vsIiCw595z793z/Mfe3XvPPPNy7t133/MeFSGEgCMqbqwH4Ipw6Qzg0gXgmr4ABV+e7vK4h3hDUS63K8ugLy3E+QvZuFF+GQCQeaS0y/dz6X3AVGOEvrQQ10rbItpiaXA4Pvc3SzAmOKT...
[ "yes", "no" ]
null
0
math
grade-1
flip-turn-and-slide
false
true
What has been done to this letter?
"iVBORw0KGgoAAAANSUhEUgAAAPoAAABkCAYAAACvgC0OAAAIxklEQVR4nO3dXUxb5xkH8L+xcTBgx3jAykdSaIpo04RsK6TbsioHmkmgXWTKql6EVgI1F0kvJm1SF2kqklGiSetdpt1OcAGRpm5qEk3axTbTKMrafFTzIF1CSBvIAumAAMHEdg42Zxd8DBjGx+Dj8/q8/58UKYTXD0983j/HPtgPtsOHD2uKoiAdLl++DE3TwHpbr9fX15eWWmZTFEXo+1m2eg5FUeD3+9NSsLOzE5qmsd426lkF95VY9XLSUomIhMagE0mAQSeSAIN...
[ "slide", "flip", "turn" ]
null
1
math
grade-6
changes-in-mean-median-mode-and-range
false
true
Look at this set of 10 numbers: How would the mode change if the number 4 replaced one of the 8's in the set?
"iVBORw0KGgoAAAANSUhEUgAAAS8AAAAkCAYAAADYbryvAAAHJUlEQVR4nO3ca2xbdxnH8a8dJ7ZzceykSZM4SdO4jtM7XYmWtqyNqICpYqNUbVWYNBATEgIhMd4BL5imIZiYKAgh0GBD8GIaYlK3taODFQ1oC026ZG7Spm2aS+smTRPnfrVdHx9euI7qFglG/T+nTp/Pu/wtnd95/uecJz43W3Rd1wGIgx4BEkByRAghHgwWwAoWB2C7PaTruq5HgKiJKyaEEP8re7KJWYkjjUsIkT2iQBysujQuIUSW0aNgRTN7NYQQ4iPSwCoX54U...
[ "increase", "no change", "decrease" ]
null
2
math
grade-4
nets-of-three-dimensional-figures
true
true
Which figure will this net make?
"iVBORw0KGgoAAAANSUhEUgAAAKYAAADNCAYAAAAyuwvuAAAO70lEQVR4nO3da0xUZxoH8D8MOmxx1gQ7rbLt1BYkjiitrc5WrWldp4DWXXBXA9nuCs2ibcJF0KqERkxNRPEGQk1aYbNitw1EGnXXWhC6tjE1FC+kKGimmUanG4M9kUSmNA4yw36AmR0Ot7mcOZf3PL9v4jjzvPr3nXPO+5z3hA0ODg6CEJkJl7oAQsZCwRRIc3MzmpubpS6DGRRMAVRUVCApKQlJSUmoqKiQuhwmhNExZnA4jkNcXBx6e3sBADqdDlarFXq9XuLKlI1...
null
[ "iVBORw0KGgoAAAANSUhEUgAAASIAAADNCAYAAAAc231VAAAhtklEQVR4nO3de1zO9//H8UcnIclYTpsypZWUjcmwjU1zPo8vm+9X/Bhzc2YOY4iZ03cj2fads9kpPzaZM/lpG5bMKCK1SA5DJCVc1dX1+6OuvplTh891fbo+1+v+j5t0fT6v95qn9+fwfr1tDAaDASHKGRsbG7VLEGZkq3YBQgghQaSQvXv3snfvXrXLEMIiSRApICQkhPbt29O+fXtCQkLULkcIi2Mj94jKJjU1FU9PTzIyMgBwdnYmKSkJV1dXlSuzbHKPyLr...
0
math
pre-k
circles-squares-triangles-and-rectangles
true
false
Which shape is a triangle?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACQCAYAAADwZHJxAAACXElEQVR4nO3UO25UQRBA0ZrxJ+AbASIkAJbAwlgHG2MHfCRCjMhssITx6BE8IZHjuSPMOVG3WipVcNWbZVmWs6uZj5czF7uZ62Xgrx1vZu4fzTy/M/PkdGZz9mNZ3p4fei1us1cPZo4/XK6Xp6czL++uFcLfutjNvPs+8/lq5v3lzPb8en0QGTfp/tHa1MzMt93MdvfHA9yk3039XGa2h12F/4XQSAiNhNBICI2E0EgIjYTQSAiNhNBICI2E0Egc72vwpzdf9zW...
1
science
grade-3
identify-mammals-birds-fish-reptiles-and-amphibians
true
true
Fish live underwater. They have fins, not limbs. A piranha is an example of a fish. Select the fish below.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOy9eZwlVXn//z5LVd2tb+/TMz0Ls8+wDbvs6AAKaIyIgKhxwbhExI2ffkUTTRBfauJCEoLGNSAaNeQr4hK/Cho1iDiAgrIzzL719PR616o6y++PutMyrAOMErHevPrF9O26Vafqnqr7nHM+z+cR3ntvjME5R05OTk5OTk5OTk7OHydSSrTWiDRNfR7c5+Tk5OTk5OTk5PzxI6VE5sF9Tk5OTk5OTk5OzrMD5xzymW5ETk5OTk5OTk5OTs6+Iw/wc3JycnJ...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA6cAAADMCAYAAACPx9V0AAEAAElEQVR4nOy9eZwlVX3+//6cU3WX3nu6e2YYZgaYYd9kFWVTFBU1RkVAjHHBRI2IGz+NS6IJ4ktNNDEJUeMaFY0a8xXXr18FjSaIiqCgIrIN2+x7b7fvvVXnfH5/nKq69/b0DAOM4lIPr37RfW8tp05V3blPPc/n+YiqapqmeO8pUaJEiRIlSpQoUaLE7yaMMURRxA1TcFg/DNpHekQlSiyMaQe3zcKGNoxGcPpIeN2UxLREiRIlSpQoUaJEid99eO9J07QkpiV...
0
math
pre-k
compare-size-weight-and-capacity
true
false
Which sign is narrower?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAANAAAACoCAYAAACR1WDYAABV+UlEQVR4nO29eZRk2V3f+blvjX3JPSuz9q27pepW71ILqdXQSEJIwthgDJjN2ONjbI89nBmOPTDLGR/jY3uM8YFhscFgJMAgLCSBkBqp1WpJvS/qruru2rMqq3JfImOPeOudP15EZERGRGbkVtWdyu85eTLibffFe/d7f8v9/X5XSCnlnA1XylDwwJXsYx/76AJNQFyFkxEYNkDMWVK+mL/dt7WPfbzz8HACtMvl4MuoAaejAbv2sY99dEbBg4slmLXhUhmUvBv...
0
math
grade-2
identify-repeated-addition-in-arrays-sums-to-25
false
true
Which addition statement describes the array?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABWCAYAAAD19uGEAAAJsElEQVR4nO3dQWgUZwPG8acfvQSUnfQUc9lR42khO2BpD426Hiz2YIhQ8GSZ0tqeSubYghBDKdiTW/RSEDK1N5vDrD1Y2h5czdGSV9CbkTcX9aRTLNhbvkO6+8ZGC5N9dzdm/j9YhLDODv9LHnY3M2+sra2tCQAAAIAX/xv2CQAAAAA7CQMbAAAA8IiBDQAAAHjEwAYAAAA8YmADAAAAHjGwAQAAAI8Y2AAAAIBHDGwAAADAIwY2AAAA4BEDGwAAAPDozX4evN1uyxg...
[ "3+3+3+3+3", "2+2+2+2", "3+3", "1+1+1+1+1" ]
null
1
math
pre-k
count-scattered-shapes-up-to-10
false
true
How many shapes are there?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAEqCAYAAABgPCRaAAAsx0lEQVR4nO3d/3OU9d3v8fdmN19YksASAxtJYgg5SCuk7ZCjKB5BcEKoA2ciN2hvqkdvYKbWucfawTrnl3Pm3PdPVqfWOaNORZ1ajkeKBeYmU4IYBSsURtFTERU6EJKQmGUCSXBDSLLZ3fNDtAULMYFrr/fn+lzPxx+QfSXo5pX9fK73O5BOp9MCAAAAwApZ2gEAAAAAOIeCDwAAAFiEgg8AAABYhIIPAAAAWISCDwAAAFiEgg8AAABYhIIPAAAAWISCDwAAAFiEgg8...
[ "7", "10", "8", "4" ]
null
0
math
grade-7
identify-linear-and-nonlinear-functions
false
true
The graph shows a function. Is the function linear or nonlinear?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AACFZ0lEQVR4nO3deXRU150v+m+pNM9CAkkIS8zYwpIAG2wmg4NjOyZ2DIkbJzeD3e70Tbqd2Fl9+768pDs3yXW7/d5tJ7Fju3PT122c7rybNjeYxMYyATMLG4GMBBIYhEBCEmgoSSXVfGo474/iFFWgoYa961SZ72ctLy9JVb/anLNrn9+ezjGoqqqCiIiIiIiESNG7AEREREREnyZMsImIiIiIBGKCTUREREQkEBNsIgq45557sGPHjsDPf/zjH3HbbbfB5/PpVygiIqI...
[ "linear", "nonlinear" ]
null
1
science
grade-5
identify-vertebrates-and-invertebrates
true
false
Select the invertebrate. Hint: Insects, spiders, and worms are invertebrates.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAEAAElEQVR4nOz9aaytWXrfh/3WWu/87vHM505169atqu6qruqRTTablEiJIjVRFk0JtihaEB0bcRAkFpAgthMHAgTbCBLESYDAiJ0Phg07AyRPkk1RlERJHLvZ3ezuqq7pzuOZ97zfeQ35sPa51TRaBqX64gDawEWd2mefd7/vWs96xv/zf8Q3Fs69nkNf8c9e/+z1P8rXysBHBRy3MA7gx0b+ffnPBPefvf7H/uoreD33P6/Nx+/Lfya4/+z1/w+vSznt3MfvBT/...
3