Datasets:
stemdataset
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STEM

Dataset card Data Studio Files
xet
 Community
1
subject
stringclasses
4 values
grade
stringclasses
15 values
skill
stringclasses
445 values
pic_choice
bool
2 classes
pic_prob
bool
2 classes
problem
stringlengths
0
1.12k
problem_pic
unknown
choices
listlengths
2
4
⌀
choices_pic
listlengths
2
4
⌀
answer_idx
int64
0
3
math
algebra-1
compare-linear-functions-graphs-and-equations
false
true
Function A and Function B are linear functions. Which statement is true?
"iVBORw0KGgoAAAANSUhEUgAAAjcAAAGlCAYAAAAGbtd7AABQmklEQVR4nO3de3zT9b0/8FeSJm2aUAqFlkLpTVZEQcoEWlRggAh4OccbMJ0O3W/iNpnC1G26DY+7sDMnUzdvx8vcUCcOmVw8ih6LHFAsPV7AIrQqaaGlNKWloU2/uefz+6NL1kDbpP1+k2+Svp6Ph4/a9Nv3953wzqfvfL/vfKMRQggQERERJQmt2gkQERERKYnNDRERESUVNjdERESUVNjcUEw9/vjj0Gg0ff539dVXq51iiMLCQmg0GmzZsiXm+543b17wcdm2bVv...
[ "The y-intercept of Function A is greater than the y-intercept of Function B.", "The y-intercept of Function A is less than the y-intercept of Function B." ]
null
0
math
grade-5
multiplication-input-output-tables-find-the-rule
false
true
What is the rule for this input/output table?
"iVBORw0KGgoAAAANSUhEUgAAAFgAAAB/CAYAAABrPAW6AAAK80lEQVR4nO2dbVBTVxrH/yEkhJfwqkEQJFlgtYNSO4ovYOzibAWF1pHRYrDulOnKdFpExtqq4LoVZMbiaLV11O6w6DCATuuXKu/d1TIdV1qm053i1Jeq7RpBCJFCSITcG3L2AyY2JTOL5hwE9/xm8iEnl/M8/Dg59+TeJwfJtZw7BFOAyP2h6NrZ97TTeCxm10TD62kn8azDBTOGC2YMF8wYLpgxXDBjuGDGcMGM4YIZwwUzxtuTH47MD4M8Soafd3bTyocKXgoJpq0...
[ "× 5", "× 10", "× 2", "× 9" ]
null
2
math
grade-2
find-the-next-shape-in-a-growing-pattern
true
true
What shape comes next?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADhCAYAAAC9ZMGZAAAUH0lEQVR4nO3db4id130n8N997p8Za2Y0rpJKlpI4pZJtCvamrh36QjYmzpI6yZKWNqzdFhpDyvZNlgb2RVOwu+zGhd1loQmkgYV0sfdNW0jaV3HNss2S1G4KjtMmjrclineNZU9kqZIlzR/p/nuefTGWLEXSeP7c+/w58/mAwWjmOef8zvOc4XvPnHunVRRFEQAAQBKyqgcAAABMjoAPAAAJEfABACAhAj4AACREwAcAgIQI+AAAkBABHwAAEiLgAwBAQgR8AABIiIA...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAz4AAADhCAYAAAAJS2C/AAAWZUlEQVR4nO3dWYxd930f8N85d5nhrDTtcJMsByUlwYBUR5GMPEiCYLlwZDtw2kSIFPfBAhw0Ly5ioA9xAClFawZIiwCxAdlAAaeQ+5QAdvNkRSgaFXKkKIgWL7KSwLRaQaRGXMLhNjPk3c7pw4gUaS6a4cw923w+gAGbM/f8f7//WXy/93/umSTP8zwAAIBGSJKk7BIqKS27AAAAgHETfAAAgMYTfAAAgMYTfAAAgMYTfAAAgMYTfAAAgMYTfAAAgMYTfAAAgMY...
0
science
grade-5
identify-magnets-that-attract-or-repel
false
true
Two magnets are placed as shown. Will these magnets attract or repel each other?
"iVBORw0KGgoAAAANSUhEUgAAAjkAAABmCAYAAAAprIBmAAASAUlEQVR4nO3da5QU5Z0G8KerqruHITiM4wBzH8KQzURcIFkhrIh+gLhZ5Rg9y7rihUQQgYTbOW5OPmhcjR7XTc6Ry4qGqICb65EourLnGNg9gLgGA2bIohNhBHpmuM1wcWZknO6uy36oKRkizPRMd1e971vP76NHPIVd/dbTVU+9/4jjOA5Iek3dDlYnTLzRZmFuuYHvVhsojwd9VERERMGJMOTIbcdZG2sSJra22xf9cyMC/MMYHUuqdUwt0gI6OiIiouAw5EgoaQM...
[ "repel", "attract" ]
null
0
math
grade-3
scalene-isosceles-and-equilateral-triangles
false
true
Is this triangle scalene?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAB5CAYAAAADDFZnAAAZu0lEQVR4nO3deViVdf7/8ec5cEDggAgKwiirQjDiglouZaVZVmrqaGEppua4TGpkZmJpv9+0TOvU2JSa+1K5VNoiiuk0NU02U2KGjuZSKmXG4kJHQc45fP8wTUvkoOfmsLwe18V10YFz368j/fG6Ptf787lN5eXl5YiIiIiIiFuYPR1ARERERKQuMbxgHzlyhJYtWxIbG8vs2bONvp2IiIiIiEcZXrA3b97Mnj17+PbbbxkzZgyRkZE899xznDx50uhbi4iIiIhUO8M...
[ "yes", "no" ]
null
1
math
grade-1
rhombuses
true
false
Which shape is a rhombus?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAG30lEQVR4nO3dz08TeRzG8Wf6SyiWIruoJBwwQRbFCCH+wAAKBw8evHgwMTH+ccbExIMHDx68gAhqMIEYIcDWGA4kxWUXKWMLlLazhzoJu0GhdOYz3+93ntfNoGWI79BfT2csx3GctSLwuQDYZaDkgKhuMQtIRYHzSeBMArDWdh1nZivowyKTXW8GYplC9Q/tCeCPpmqFRPWyy8ByHsgWgT8LQGSrVP0CIyMvpaLVpgDgexmIlPd9gchLblN7DhAJ9lAoLBgaiWB...
0
math
grade-2
equal-sides
true
false
Which shape has 4 equal sides?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAHrElEQVR4nO3dS2xUVRwG8O8+ZmhaphQoMKQ+GkgRmmiMkRBMDDHiAmPEBRtXbnShC+OCBDCICT7AhIVxoQvduHGjiSEmEKMkookY1PhYlGKF1AcyxUJLh07amftwMb0ybe7ta849c//3fr9dUxJue7/57jlnzukYvu/7pSrwewUou4Djg6hptgEULKCvHdiQB4zStO+fn2j1ZVGa7egE7KFK/YuNeeCejnoKiZpVdoGLk8DVKvBbBTAnnPo3GDJSqWDVMwUAt1z...
0
math
kindergarten
subtraction-sentences-up-to-5-what-does-the-model-show
false
true
Which subtraction sentence does the picture show?
"iVBORw0KGgoAAAANSUhEUgAAAGQAAAAyCAYAAACqNX6+AAAI40lEQVR4nO2c21Mb1x3HP3uRdpFAMhKGAMZ3Nxeb4ITg1M1kxmnyEKe2E0+d1mkmMzz1L+r0mbSTZjJjN3XiTB7SZqbNBceOHSiQ1tgWdoKxwQjQ/cJe+rCWxForJNlQtBm+T5zVOWd/n/nuuew5ZxFM0zTZVMNI3OgANmXXpiENpk1DGkwVDZm8PvX/jKMmPUxMbuOQnS4OvXeW4YtXOHzoWQbf/vW6BVaPHiYmN3KUtZCr1yIMX7wCwPDFKwy9d3b9o6yiAgRYMUU...
[ "2 − 1 = 1", "2 − 2 = 0", "3 − 2 = 1", "1 − 1 = 0" ]
null
1
math
grade-8
identify-reflections-rotations-and-translations
false
true
Look at this shape: Which image shows a rotation?
"iVBORw0KGgoAAAANSUhEUgAABbAAAAC3CAYAAADD5XikAAAYQElEQVR4nO3df6ycdb0n8E/bA6U/gLb2BzMIGLyseG0LdEx/KKhABU6UjW5E0U2UrCGbqFiiyfqD3YjZ3btx/eMubjQuJBqNke0ftNC61Fpge6WhPchToKVwWfWIgM/YH9RS+ovbX/vHoYdT2tKe0+c7zzwzr1fSMHPO9DOfPJk5nL7nmfeMiojDAQAAFOLwYb9eAwBAUUaXvQAAAAAAAByPABsAAAAAgLYkwAYAAAAAoC0JsAEAAAAAaEsCbAAAAAAA2pIAGwAAAAC...
[ "B", "C", "A" ]
null
0
math
grade-7
identify-alternate-interior-and-alternate-exterior-angles
false
true
\line{PR} and \line{SU} are parallel lines. Which angles are alternate interior angles?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAD2CAYAAADs6vBqAAAil0lEQVR4nO3de3BU5f3H8c/mSiCaRDFGqpAYCGIIMAEkXDdRhCAWAmYAq5VLoQNCbWwHlNQLPx2hhWnFK0xNMTjaimINFgQRNCEYiBAuIYBcQlbKVAxqFgyXQMj+/qDsz/xyAZLdPbt73q8ZZsh5ln2+5xn++PDlOc+xOBwOh0zIbrdLkiIjIw2tw1exfgAAAI0LMLoAo+Tm5io3N9foMnwW6wcAANA4i1k72LGxsbJYLKqoqDC6FJ/E+gEAADTOlB3svLw8ff3117L...
[ "\\angle{RQT} and \\angle{UTV}", "\\angle{RQT} and \\angle{STQ}", "\\angle{RQT} and \\angle{UTQ}", "\\angle{RQT} and \\angle{PQT}" ]
null
1
technology
grade
peripherals
false
true
What kind of computer peripheral do you see here?
"iVBORw0KGgoAAAANSUhEUgAAAV4AAAD8CAYAAAA/iMxLAAEAAElEQVR4nOz9W69tSZYmCH1jmM0511p7n4sfv8Qtr1FZWV1FUwWdXaSSalWroWiBQCCQEA0SF4lHnvuhETwg+AVISM0P6B+AhBBSUSCkpkV3FZVdl7xV3iryEhkR7uHHzzl777XWnGZj8DCG2bQ519p77ePH3cOjMsy1fe+z1rzYtGk27BvfuNF/669eKQAQEYgIzFz/Lp+Xdu6zTjF/z7r6XtA2ovX3gBI/+H17TSKc9C/Ph57tHzM/+D1IHvz+0vmq+eHrN+3S95+...
[ "Modem", "External Hard Drive", "Bluetooth Headset", "Trackball" ]
null
0
science
grade-5
predict-heat-flow
true
false
Two solid blocks are heated to the temperatures shown. The blocks are placed so they touch. Which diagram shows the direction heat will flow?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAANYAAAEcCAYAAAC750pIAAAeKklEQVR4nO2d6XMU952HP909PfdoRidISELikIyxYU0wAZwYYcdHbOM4wRBvskklWe9RtW93/4vd2re7tVu1VdlUbVKRnWCwjQ0BRMDgxAkYGRskjgjdtzS3Zrqn90XTczCjY0bd09f3qaIAadTTkvqZp3+/7ulmJEmSJlLAnTgQEQFBAkEQZeJggAAHbPcCG5wAM7EkSX8I671aBGEdvl4DOAbj8n+anUC3T7aOIIjyiIjA7RgwngIG4gAbFuRPkFQEUTkBTnY...
0
math
grade-8
identify-trends-with-scatter-plots
false
true
Does this scatter plot show a positive trend, a negative trend, or no trend?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAFhCAYAAABK/t0lAAAof0lEQVR4nO3db3SU5Z3/8U8CkoROMikIJIRk4gY2NCgEEt0kHCdLtRCUSNsV9bT4bwsV96yswFnFPUcaFbupR5BFZaGirRJ3WYmcQ2EtFlAShQDNIEEToaWSAYKZQCX/gAAh83vAj1kCJBJyZe6Zyfv1iLm/w3y/FzzIh5trrjvM6/V6BQAAAMCIcKsHAAAAAEIJARsAAAAwiIANAAAAGETABgAAAAwiYAMAAAAGEbABAAAAgwjYAAAAgEEBFbBbWlrU0tJi9RgAAAD...
[ "positive trend", "negative trend", "no trend" ]
null
2
math
calculus
find-limits-at-vertical-asymptotes-using-graphs
false
true
The graph shows f(x). The dashed lines are vertical asymptotes.
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AACKDElEQVR4nO39eXRT950//j+1S7Zsy7uNwQazOJhg9jWQkEITGtI00Mkknek2nc5M26Sz/PKZ0/nkzOk5n/lk+umnnUxP55N2aDtt0mn6nTaZpklDIFuBQEzZDBgwmzF4w9jyIsla76J7f38IGQw2lux7LVt6Ps7JIchXT72RpavXfeu9GFRVVUFERERERJowproBRERERETphAU2EREREZGGWGATEREREWmIBTZRBtm7dy9mz56Nbdu2pbopREREacvASY5EmWPLli3...
[ "$\\lim _{x \\rightarrow-5^{-}} f(x)=\\infty$", "$\\lim _{x \\rightarrow-5^{-}} f(x)=-\\infty$" ]
null
0
math
grade-4
identify-parallelograms
false
true
Is this quadrilateral a parallelogram?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAC+CAYAAAAP4XhrAAAb6klEQVR4nO3da2xc933m8eecufF+kYacESleZItCUC/aroNmk12kRtdpsUHQXIAkbYAGiBvbUm3VjqPUdqzIsmzL8WVj2E3iWrabNECw2QZeNG1qJAhibJ3uOt51q7R1XG81FE3zTorSkMPhDOd2zr4gNWdGlsQhOeSZy/fzJvqfzMi/Fx74Of955n8M27ZtAQAAACgL0+0BAAAAgFpCwAYAAADKiIANAAAAlBEBGwAAACgjAjYAAABQRgRsAAAAoIwI2AAAAEAZEbC...
[ "yes", "no" ]
null
1
math
pre-k
tally-marks-up-to-10
false
true
Count the tally marks. What number is shown?
"iVBORw0KGgoAAAANSUhEUgAAAGQAAABBCAYAAAAngwHRAAAG6UlEQVR4nO1cX0wbdRz/dO3SQstKiknpwBRllEUTMRlm8KTjcTCetpiIi4mJWR/VuDd1zvhg4sNeIfpglozExMTIxuLTOh8cRLtk3bLFlizSWDowFNuVQnGM86Fcacvd/e7X3/fKtfB5aMrd8bn79XPff79/FkmSJBzANDi01w9wgHLYqIjWNrNYyMXQZHWh09V7wFclhAWJZcKYnp/AXCZcPNZkbcFQ5xhOdbyDZlsLN18oMYlIKkTCl1iNYjo+YVq+SlhEYsiN+Dh...
[ "10", "9", "4", "5" ]
null
3
math
grade-3
open-and-closed-shapes
false
true
Is this shape open or closed?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAAMw0lEQVR4nO3dT0zbZ57H8U+rPYEwXMIeUlLDjTghaA6BqFKGgER3DnGzUkjCJeVfr2CSXKapiKmmnUsLNtdxqNPD0kK1S+Awm0gwTg4L9DAyA2Zu4BR6qCut/HP2l2v24NgTGJIAsf3YP79fl0hWIJ/cPjx8n+/zzvPnz58LAAAAQE68azoAAAAA4CT/YjrAQdxbnFF4YUaP1pd1pv6kaipdajt9TjWVLjXXe/R+7XG5a+tMxwQAAAD0TrGOiCRtS/dXHso/Na4niZ0...
[ "closed", "open" ]
null
0
math
grade-1
two-dimensional-and-three-dimensional-shapes
true
false
Which shape is two-dimensional?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAJNklEQVR4nO3dUU9T6RaH8f8uVCt1zunFdCZGiEYDh8RgIJrAyBeYjzxfwBmYjIGAFwwzmBg0xxNuiFqmUNp9LjaTw6lQWmhdXet9flcab17Kfmq737erWZ7n+YcT6c8j6VNbOs0FYEQmM+mbCWl2Svr+lpR9OM7zXz9aLwtIz/I/pMk/joq/3Lsl/ata1AlgND61pd8b0r9PpN0jqfTxtPgH4gNG75uJojVJ+tyWSu1z/wBg9P5urZVLJdulAGkjQMAQAQKGCBA...
0
science
grade-4
compare-temperatures-on-thermometers
true
false
Select the thermometer that shows the highest temperature.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAQIAAAECCAYAAAAVT9lQAABoCElEQVR4nO29eXgU550u+lav2rokkFjVAiEWo5ZtjGOjlgOO7YmEDXEyg4QnnuTOGDx2nPPcMXK85N4nLGNg7plgGITnj3HwQXCem8ROkHwzyWROkHwmjgGrhWPwglosYu0WoAVJXd3qVq91/yh9n6q6W1Iv1a0W1Ps8ekrVXVtX1ff73t/O8DzP3/IBXW7AGQQCPBQoUHCHQ8MABjWwNAeYowOYW16eP8VN9WUpUKBgqlDJApqLbmFlng64J1eQEgoUKLiz4Qw...
0
math
pre-k
more
true
false
Which group has more?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAHIAAACGCAYAAAAB3t5yAAAGg0lEQVR4nO2cTVBTVxTH//l+5EPsTKeJK+kM0ewM3WAXQN2Jmc7Awqo7wU1ZVO2yyrJUl9WRmW5wZFfpdMq0I7jT6kLrAnAHxZnSFXHaBWNCfAkJr4vnszEjEMK7H+9wfpsMCbx78373nnvu5d7nsyzLyleAFyWgUAOqFhgPEPQBiQCQjgLJMODLly3r2SvV1WL2QvcBILhcsn84FAaOxmzLjP4UasDSOrBaAf4sAf5XVfsDlugtEgHbGQAUa4C/VvcB4y0cZxs...
1
math
grade-8
identify-complementary-supplementary-vertical-adjacent-and-congruent-angles
false
true
Which angle is vertical to \angle{2}?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEFCAYAAADZm5BpAAAWwklEQVR4nO3df2jc9f3A8dfZxERtbDb79VQsTWmZnVOTgrP/lJrW/WO70dQ2rA42z/2xfmE/Uv9wU3CQDhkOZCu473AwsWUbHbS1qcyyMXSxk03dhsmmULdCTza+5EDp1WhNzep9/9j3grFJW+d9Pnf3uccDisndJ597X+MfT9++7vPJVSqVStByxsbGoq+vr97LAADInIvqvQDqo1AoRLlcrvcyAAAyR2C3oN27d8f4+HiMjIzUeykAAJmTMyLSeq666qoolUrR09M...
[ "\\angle{3}", "\\angle{4}", "\\angle{1}", "\\angle{5}" ]
null
3
math
grade-4
compare-fractions-with-like-numerators-or-denominators-using-models
false
true
Which fraction is less?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAC5CAYAAAAS5EjTAAAHwElEQVR4nO3cz4tOfR/A8c95jJrm1wJTKDXZTCEkTFn4EXXvRhElo2xsFerJipGNLCRl/gA1G3bGxsLQmDSbUZON0pjyKDJKaTSYdD2Le9zdPY8y7j7Xdcyc16uuxTVO+Rx9y7tPZ05Rq9VqAQAApPhX2QMAAMBSIrABACCRwAYAgEQCGwAAEgnsvxkeHo7Tp09Ha2trdHZ2lj0Oi5zzBADVVHiLyJ++ffsWTU1Nf31ftWpVTE9PlzgRi5nzBADVZYM9b9myZfH8+fN...
[ "1/2", "1/8" ]
null
1
math
grade-5
identify-parallelograms
false
true
Is this quadrilateral a parallelogram?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADsCAYAAABOp9GXAAAiSUlEQVR4nO3d+Z9b9X3v8feRjpbR7CNpNozZSoEQEtJsTdNsJKVJSYEkJIDBxkBdmiaPpPeR2/4J99He3N5ma1LCZjAYAlyzhARKYngEbiABUkKIg8GX3fYsGkmzarQc6dwfButIgz0z9hzpaHk9f5qv0Mx8gZH9nqP3+X4M27ZtAQAAAHCFz+sNAAAAAK2EgA0AAAC4iIANAAAAuIiADQAAALiIgA0AAAC4iIANAAAAuIiADQAAALiIgI2m8NQvF3TTtVPa/0be660...
[ "no", "yes" ]
null
0
science
grade-5
identify-magnets-that-attract-or-repel
false
true
Two magnets are placed as shown. Will these magnets attract or repel each other?
"iVBORw0KGgoAAAANSUhEUgAAALoAAAGpCAYAAAA6OyxwAAAie0lEQVR4nO3de3gUVZoG8Lf63p2EkISbhoQEDTchEIKsgIgIIgKiDo4rKjgzjKLjjHjXddd13Z1ZdXW9zYwXRhFEZERmEAQUBQFBR9gEkoCACIQEEoSEBPp+q679o5OQQNLpJF1Vp+p8v+fxISjSJ91vTn3nUqcESZIkkE4LhoHjdREcrxNRVRdBvScCT0Bq+AfwBCR4m34v4aw3+nanOgQkWaP/OKyNX6Pp36UnG5CZZkBmuhF90w2wmFT+RjVOoKDH5/BJEeU1EVT...
[ "repel", "attract" ]
null
1
math
grade-5
understanding-probability
false
true
If you select a marble without looking, which color are you less likely to pick?
"iVBORw0KGgoAAAANSUhEUgAAAQkAAACxCAYAAADXhkjIAABCaUlEQVR4nO29eZhU1bnv/1m7hh6qJxpahhYaEGQQRzCiHpuLUcGYRIYTHBKPxpMnor+cmyMkJ4p6TPID1JubaJJzjCYn8apJNNcBMTkPkJ8mHghOwFEjYRBEpm7Abnru6hr2Xuv3xx5qV/VUPVVVw/4+D1TvXbt2rdr73d/1vt/1rncJpZTCgwcPHrqBlu0GePDgIbfhkYQHDx56hD/bDfAwMPzxj3/kjTfe4PDhwxw9epSamhpqamrIy8ujsrKSyspKzjzzTCZPnsx...
[ "pink", "black", "neither; black and pink are equally likely" ]
null
0
math
grade-5
identify-trapezoids
false
true
Is this quadrilateral a trapezoid?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAD3CAYAAAAntiPPAAAg7klEQVR4nO3daZRkd33e8efWdmvprt5nuqdHs0hIo9FICHTAlu04lhMgLNZmMGaNkLGxjQ2EJH7jF8mbYGd5kUSAEESYxQEnOSEGO8E5xgmcwyHHmEUw0mikmdHsvUzva1XdW7fuzYtq9a3qnhl1V99bt5bv59Xt6VHXn8PonGce/e/vZ3ie5wkAAABAIGJRHwAAAADoJARsAAAAIEAEbAAAACBABGwAAAAgQARsAAAAIEAEbAAAACBABGwAAAAgQARs7Jl1rqzLf3h...
[ "no", "yes" ]
null
0
science
grade-2
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.
"iVBORw0KGgoAAAANSUhEUgAAAtMAAADMCAYAAACx6y9WAAEAAElEQVR4nOy9d7hlVX3//1pll1Nvn3Knz8DQO4iCIFjBEhsQEXs0RqMSCArqTxTJV59EoomKRrCgYDdgITFgiUhRgaFIURiYYZhebj11773K74995sowlAFGSeJ+Pc957jnn7rL2Omuf89mf/V7vj/Dee2MMzjkKCgoKCgoKCgoKCh4fKSVaa0SWZb4IpAsKCgoKCgoKCgqeGFJKZBFIFxQUFBQUFBQUFDxxnHPIp7sRBQUFBQUFBQUFBf9bKYLpgoKCgoKCgoKCgid...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA4IAAADMCAYAAAAmsx3gAAEAAElEQVR4nOy9d7glV3nm+1uhwo4nd+6Wuls5AEoESQhEFDBggoTBDMljbIPBGA0YbF+wAV94ZsAJDIxJBguMMR5E8mUIxgSRhCQkJARKLbVanbtP3LFqhfvHqr3PPqFbLWgQHu/3eY76nNoVVq1atbXe9X7f+wnvvTfG4JxjiCGGGGKIIYYYYoghhrh/SCnRWnPdPJxagZp6sFs0xBCrY8HCbU3Ym8GYhotHw3Y5JIFDDDHEEEMMMcQQQwzxwOCcwxgzJIFD/Mq...
1
math
grade-2
compare-vertices-edges-and-faces
true
false
Which figure has fewer vertices?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAIAAAACACAYAAADDPmHLAAATIUlEQVR4nO2de1hU5b7HPzOAGl4GvKSGCSoXCbl4hSQFL1nm3SKvCQqoaAqWj6S5k8qd5lYB3YqhOB4sztZM3HRMT0mDCpYox9GEUEwQNQUKBZQDCKzzx+wZ0+O2kjWzZpj5PA+PMjys9zu8X97fu36/33qRCYIg3KyDS9VQ1QD1AhaaMdYyaGsFLrbQuQXIbtYKQnal1LIsSIFvO7AuqNZ80rUFuLXWuMNC86WqAS7chRt1cLEa5JX1mi9YJt88aGulmWuAOw0...
1
math
pre-k
fewer-and-more-compare-by-counting
true
false
Which group has fewer?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAALeklEQVR4nO3dP0wcSRrG4a+7pweLP4eFbs54LSTMCF+IHG1ib+xb6TLLsUWMnJuczX1cisnX2V3gyyHaxHay0h6OnHhOe1pZHjxiGU/3BU1jww3TDVPTX1XX70mAsVS0tvTuvPRUdQVpmqadY5G3PZHuQORzKgAmpBGIzEUiq9MiN5oiQef3NP3po/ZlAf759g8ijYNe9sPNpsifZ7J0ApiM7kDkl08i749F/t0TCT9+zv6B8AGTNxdlWRMRORyIhIOv/gHA5OV...
1
math
grade-2
select-three-dimensional-shapes
true
false
Which shape is a cylinder?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAATKUlEQVR4nO2dX3BT153Hv0eW5D+yJGMZyxgHQwB7Q8AOwR1MtxAImWkn2ZCd2WQmk6Z52AlJX3amyXb70M4Ok0wnL+2GzOzLssm+lKbTbujDkklm2yH8S9pCFyexvV1iIAGDMLaxwLYsy5YlnX240v0ji/jfObrnSr9PZuLrq3PP/Vn8dPT7d36Xcc75cBK4Mg3E0kCKgyCUw80AfwWwuQYIewE2PMv5nyftFosgFs/OAOC+PK39ssYLtPs0rSYI1YilgYE4cCs...
1
science
grade-7
use-scientific-names-to-classify-organisms
true
true
This organism is a pink skunk clownfish. Its scientific name is Amphiprion perideraion. Select the organism in the same species as the pink skunk clownfish.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOydd7hdRbn/PzOzyi6nt/TeIZAAoUZ6C0WKIAgqHRFBVBSw/O5VLgJ64aJUC0UQUVSEC9jo0iGQngCBkF7PSU7fba01M78/1j6bnEAokiuK6/M8eXL23qvMmjVr73fe+b7vK6y1NooijDEkJCQkJCQkJCQkJPxrIqXEcRxEGIY2Me4TEhISEhISEhIS/vWRUiIT4z4hISEhISEhISHh44ExBvlRNyIhISEhISEhISEhYduRGPgJCQkJCQkJCQkJHyMSAz8...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA6IAAADZCAYAAAA69Y0YAAEAAElEQVR4nOz9d7gkZ3nnjX+eVFXdfeKcOZNHYUYaZYQEssg2WeQkggAjA47AkhYje727flnWeG0wNkHmxWAwxvgVNsY/sL0mCDCSEKAsFEBC0kiaPCd3qqon/v6oM4MkJBiwFjDbn+uaS6db3RWeeqq67vre9/cWQGLEiBEjRowYMWLEiBE/F1y5kjihA+Pqp70lI0ZAL8AtA9hnYVrDY6aa9+VPdatGjBgxYsSIESNGjBjxoDIKQkf8LDGumjkJ0A/fe38UiI4...
0
math
grade-1
comparing-review
true
false
Which group has fewer?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAXYAAABeCAYAAAA31j+KAAAFsElEQVR4nO3dv28TZxzH8c/FIWeSgIOKWnWJsiRkAMGQKNkZWoFQUKf+mQVEVQb2AB6QWJyYgbKUCiTi/MJHsZ4OV6s42I7v7ns//Oj9WigFPXdvR/qkKQ4XOOfcu8/S61PpqCd9cQIATJHZQLpUk1bnpR/mpOBd5Nzzw7JvCwBgYeuyNNs+jX/y45x0bSFefQDA9DjqSXsn0l+fpf1TaebwS/wLjDoATKdLtXjDJem4J830vvoFAMB06m/4P06aKfdWAADWGHY...
1
math
grade-2
interpret-tally-charts
false
true
Steven and his family ate breakfast. This tally chart shows how many of each type of food they ate. Did Steven's family eat more oranges or bananas?
"iVBORw0KGgoAAAANSUhEUgAAAaoAAADWCAYAAACAGMb4AABOrUlEQVR4nO3dd3hUxf748ff2ZNM2JJBCSULvoYNYCEVFVFAUvRakiAVUih2xKxcsP9SrCBbK5VpBv1RRuFw6ClIEASFISSgpEELqZus5vz9OssmSbLLpbV7Ps0+SU2cXcj6Zmc/MqOTPm8oIgiAIQh2lru0CCIIgCEJpRKASBEEQ6jQRqARBEIQ6TQQqQRAEoU4TgUoQBEGo00SgEgRBEOo0EagEQRCEOk0EKqFWnQ/sy/kHLhA/5gyZhsjaLo4gCHWQCFRCtdnT9kW...
[ "bananas ", "oranges " ]
null
0
math
pre-k
fewer-more-and-same
false
true
Are there more daisies than hummingbirds?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEECAYAAAASx0PMAABvoklEQVR4nO39d3gcWX7f+79PVXd17gbQyCASSQAMIDkkJ5ATyMl5VrsrbVSwtJLXlnWvLV/rOv1+8tXa1rUtS7ItX0cFa+9K2jwbZifszE4gOUwzwzDDCIABIDLQ3QA6xzr3jwabxAw5gYMhCfL7eh4+BKq7q6vq88f54tSpc5TWWiOEEEIIIYRYFMa1PgAhhBBCCCFuJFJgCyGEEEIIsYikwBZCCCGEEGIRSYEthBBCCCHEIpICWwghhBBCiEUkBbYQQgghhBCLSAp...
[ "no", "yes" ]
null
1
math
grade-1
simple-fractions-what-fraction-does-the-shape-show
false
true
What fraction of the shape is orange?
"iVBORw0KGgoAAAANSUhEUgAAAVsAAABkCAYAAAAolJMhAAAB9klEQVR4nO3UsW1UURRF0TsjS1MB2UQ2PViiAkqgAyQacA1uAFEBNdACogZDMhkVOHqkxIz+/lheKzvZifZhrbUGgE3dzMz8/vJhnn/92PvLq3a6vZ83H7/ufQPYyHFmhPY/8Pzz+94XgA3d/D3Oj097/bjK5eFuZmbO7z/t/OTfXL593vsCsLHj3gcAXgOxBQiILUBAbAECYgsQEFuAgNgCBMQWICC2AAGxBQiILUBAbAECYgsQEFuAgNgCBMQWICC2AAGxBQiILUB...
[ "1/4", "1/5", "1/3", "1/2" ]
null
3
math
grade-5
three-dimensional-figures-viewed-from-different-perspectives
true
true
If you look at this object from the top, what will you see?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEjCAYAAAAIbnZCAABReElEQVR4nO3de1iU97ku/htRUGAAQQGn4RT1ImBQpqX1wC8Ku13x0LUVjZhkeUDEtLK7VfDQNmYlDLWxaRMBdeXCliCIMQchSFhdELNWAjGBJIZsRlEixYTRSYeTkIEBFGTg98c4r6KIHN45wf35p4UM8z4Tk+u6+eb5Po9NX19fH4iIiIiISBQTzF0AEREREdFYwoBNRERERCQiBmwiIiIiIhExYBMRERERiYgB2wSOHz+OqVOnIiIiAgqFwtzlEBEREZERMWAbkUK...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA6AAAAEjCAYAAAAsfmzuAABaEUlEQVR4nO3deXTUdZ7v/2cIJEJWtgSqOyRp4SAgS02nm+0nkNszsvRcCEhoHWTHaXP7AgGhp8WrqQwtvSgQ4HpCDwIBxC2Ike5J1B5NxCYqxpuCAMKApiB2kQVidkhMJb8/yipBtkBqC7we53g0ZVV93wWJh5fv9/fz9mttbW1FRERERERcws/Pz9sliPisTt4uQERERERERO4OCqAiIiIiIiLiEQqgIiIiIiIi4hEKoCIiIiIiIuIRCqAesHPnTrp37058fDx...
1
math
grade-3
which-picture-shows-more
true
false
Which is more?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAlYAAAFmCAYAAACvN9QvAAEAAElEQVR4nOz9PYwkS5bvif3e24eFBYklzAACdKNUJhCEp+ZBgchYqWK0aFDJWqmSUmdr2VoVpVsjTV2JdbWb2mRLkyWxUiBxQ3tR0kYAFMK1dPADsNLcARIwwy753Ljch6FwzD8iq253z5veN6+LcYCqiPRwN3e3z2P/8z/n/Kt//Md//Mfuv4P/+7+D//bfw3//j5zlLGc5y1nOcpaznOXPkH/zr+C/+M/gf/E/gv/Zfw7/qvv//OM//p//m3/pxzrLWc5ylrO...
1
math
grade-4
elapsed-time
true
true
Look at this clock:What time will it be in fifteen minutes?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADICAYAAADSmpa3AABUUUlEQVR4nO3deXhTZdr48W/SJWmTNF2gaVlaoAsg0AKKoKzjhii4DCCoozKiM/MbQHEZhRHGmREVZkYBBd/3HakD4yAgoLKDIEvBEQTZEaUFSlnaFChNk7Rp2ia/P0JTQtJ9hd6f6+plz3Oec86dEq/rzsl97kfhdDqdiAZxsSCXtNwM0nMzOG82YioyY7FbsdgLsNitmK/+11Ls+m+eLR9/pR96dQjaQA3agGC0ARp0gUFoAzVoAoPRBWoIU+tpqzPQKSyWuLD2tAo...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA7gAAADgCAYAAAApDMpcAABtI0lEQVR4nO3deXhTVeI+8DdJ26RN0nSBpmVpC7RlEVpA2SngAgiyiICgjooijt8BFJdRGMFlQIUZFVDwNzOCog4CUlR2EGQpOIAgtCwibYG2LG3K0qZJ2iRtkt8foWnTpHuWLu/neXzsPffm3pOaW99zcxYBAAuIiIiIiMglLBYLco1ARhGgMQGlTNtEbuMjAOQiIDYAUPoBArCBS0RERETkMrkGC34t9HYtiFqefoGAj7crQURERETUnKQXWf8d4Qd0llq/XSI...
1
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?
"iVBORw0KGgoAAAANSUhEUgAAAmwAAAGZCAYAAAA0Im0SAACA3klEQVR4nO3dd3xUVfo/8M+0ZDKZSQLphU4y9EAmUhQh4OqiJKirfpWg7vpTEguuJaxdCau77gpBv2tN8GtBTXQXV5fEslgIIAIyAYK0SWiBZEJLm0mddn5/hLmZm54wLXee90tM5t4755w7JA/PvadcEWOMwYfV1FzEqVMVaGtrhUgk8nRzCAEAyGQyREREYuTIkZ5uChEwin/EG1H8657U0w3wJJvNhurqajBmg5+fn6ebQwhPTc1FREdHQyaTebopRIAo/hFvRvG...
[ "neither; the samples have the same temperature", "sample B", "sample A" ]
null
2
math
grade-8
multiply-polynomials-using-algebra-tiles
true
false
Which area model represents the expression (3x+3)(x+3)?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAR0AAAEdCAYAAAAxarN7AAAViUlEQVR4nO3da2xb9R3G8cfHTpvGaZpAsqZpukJSeoNVtFnVVsA2AYUWMdCENAmEhJD2AmnchKpJoG0vd5N2Y6pASGxisKFxm2DaCI1YoQwosDgtTe8ktCm5NHVJ49rJktjHe5EmbbI2F5/j/5nP+X7etHYb//56lDw+58T2P5TNZrM9w9JnA9LZjJTOCgBcEwlJ88PSVSXSwjlSqGcom/044fWyAATBhjIpcnRg9MaiOdKK6GgjAYBbzmakwympe1g6MiBZifT...
2
science
grade-2
identify-plants-and-animals
true
false
Select the animal.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK8AAADeCAYAAABL7FARAAEAAElEQVR4nOz9d5QlyVnnjX8iM6/3Vbe8r672PW1merzXOGmEkAYQMiCshBN2V7DA8u4uu8DusphdYJEESAtaISGH7Egzo9HYHtfT3lZXl/d1vb83bbx/3DK3XE+Pht857+8cnnO662ZmZERk5BNPfB8TT4rX81LuDkBI5V/pX+n/k1S04UoZFgyIaXBXtH5e+VfG/Vf6/zqFVNgdqP8u2WvnlX9l3H+l/3+gFT415do5bauCf/nELEIIpAAp5VZFAHAEKHKtjCP...
0
math
grade-7
apply-addition-and-subtraction-rules
false
true
The number line shows two unknown numbers, p and q. Is p–q positive or negative?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAI0klEQVR4nO3de2hU6R3G8e+ZW2JiNFGMxq4X8LZmZbPe4gXpuktp/7AqsZZid7G2glTrYkuhbkGhbIOL0BW2m6UKUoqlVmWJGNulhVY6Cm0uRnfWYNbWXXPpyjreEpOYydxO/5iLZr3WTObNzDwfiGTOKDxw5sw8vP7mPZZt2zYiGezw4cNYlsWGDRtMR5E00TnPPTrnIpJJXKYDiAxVZ2en6QiSZjrnuUfnXEQyyVMX7FAoRHNzMw0NDZSWlo74VYSuMNS0h/HeiuL...
[ "positive", "negative" ]
null
1
engineer
grade-6
identify-control-and-experimental-groups
false
true
In this experiment, which were part of an experimental group? The passage below describes an experiment. Kiara was using steel to make rusted sculptures. After building each sculpture, she caused it to rust by placing it in salt water for eight hours. Kiara wondered if steel would rust faster if she added vinegar to th...
"iVBORw0KGgoAAAANSUhEUgAAAUwAAAELCAYAAACyM7+LAAEAAElEQVR4nOz92a9tWXbeif1ms7rdnTZu3BsRNzKDTJJFkWKKZZGlkgyXZBsWypJhw/aDLcgG6qGe9C8YfvCTH2w9FQy49B+UgUJBZZUtS4BNNYBKnZXJLtllExk3bn+63axmdn4Yc669T5CUbJWkoAEt4NzmdHvttdYcc4xvfN831F/5K38l8W+Pf3v82+PfHv9/dPzVv/pXv5bXtQD/+P/+f8N7T3ITVhsuztacbdZYbZimgd1hz+Qdo4sM3uFiYkoBFxI+Bhpt0Sr...
[ "the steel squares soaked in salt water", "the steel squares soaked in salt water and vinegar" ]
null
1
math
kindergarten
are-there-enough
false
true
Are there enough toy mice for every cat?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACgCAYAAAA2PRuAAAAjRklEQVR4nO3deXCd9X3v8fdz9l06OtplLbZlG9vYbAVsIJAQaGluUm4hIfcmbWiT2/7R6fR22mln7sztpO1M2+kwd8q0cJuFcgkkZGmWS0Igl8UsZV+MLYzxon2xdLQdSWdfn/uHYoFiI0vyc6Qj+/OayQwW5zn6vS2U5zvPeRbDNE0TERERERGxhG29FyAiIiIiciHRgC0iIiIiYiEN2CIiIiIiFtKALSIiIiJiIQ3YIiIiIiIW0oAtIiIiImIhDdgiIiIiIhbSgC0...
[ "no", "yes" ]
null
1
math
grade-2
interpret-tally-charts
false
true
Dan's friends voted for their favorite fruit. Dan made a tally chart of the results. Which fruit got the most votes?
"iVBORw0KGgoAAAANSUhEUgAAAV4AAADWCAYAAACZv+obAABJZklEQVR4nO2deXxU1fn/33e2JJN9YYckbLKTAAUsKAQEawFFUcGlyFKrVUHwW0GEKi4/RVH7tYqgtSD221rBDQRtQWVTEFAISyIBhWwsIfskmUlmu/f3x5BJhsxMJslkP+/XixeZc88997mTyWee+5znPEeaP2OvgkAgEAiaDFVzGyAQCATtDSG8AoFA0MQI4RUIBIImRgivQCAQNDFCeAUCgaCJEcIrEAgETYwQXoFAIGhihPC2c9ThWp5+/zoW/20M6nBtc5sjELQ...
[ "bananas ", "lemons ", "grapes " ]
null
2
math
pre-k
ordinal-numbers-up-to-tenth
false
true
The first picture is a plane. Which picture is fourth? first
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAn3ElEQVR4nO3de1xUdf4/8NeBIRkYGQwWaQXEHANNBGy9JNjaY9MyLd22VtNtvbW/XdFaW1fU6puwX0u8VLYh+v39vPb9mqbVlkl5aTf7KaZlgqCC67ANoImKLiPDDMrMnO8fhxlmmNs5w5kLc97Px6PHI5lz483nvD+fOedzYViWZUEIIYQQQggRRVigL4AQQgghhJBQQg1sQgghhBBCROSzBnZzO4sBB28h+x8taG6nXiiEEEIIIUQavGpgf3KlHYU1bW4bzkeajND...
[ "train", "bear", "plane" ]
null
1
science
grade-3
identify-vertebrates-and-invertebrates
true
false
Select the invertebrate. Hint: Insects, spiders, and worms are invertebrates.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAADRJUlEQVR4nOz9WcxtaXrfh/3eaa219/7GM1SdGrt6ntnsiRQlki2apJqkpEhU4jgSDMVRgNhKgsRBACdAroIkgC9yFwRwDBu+yE0cJLFha6RimKIGiiJFttgzu6prOqfqTN+4917DOz25eNb+zqmq02RR5QsH4AJ2na/2vNd63ud9hv///5jfvhD55Ar2HX9y/Mnx38pjXeD7W3g7wrGHnz7S++2fGO6fHP9tP/YdfHKlf2/Ko/vtnxjunxz//3Ds7DTJo/v8k55...
1
math
calculus
identify-graphs-of-continuous-functions
false
true
Is the function f(x) continuous?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AACQZElEQVR4nOz9eXhT5503/r+1S96NbWxjsNkXgw0YzBYIpKEJDUkaSFLSNeneTppO+8zMt8u3vz7f6dBOn2nTTmfSNNOnmSRtOk2ThmwQQkhYY8JmwGCDwRjwihfZsqz96Cy/P2Q5GDCW7XMsyXq/ritXiy29fWOko8+5z+fct05RFAVERERERKQKfbQHQEREREQ0nrDAJiIiIiJSEQtsIiIiIiIVscAmSiB79uzB1KlTsXHjxmgPhYiIaNzS8SZHosSxfv16fP7zn8e...
[ "no", "yes" ]
null
1
math
grade-1
name-the-three-dimensional-shape
false
true
What shape is this?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEnCAYAAACT/zRUAAAh30lEQVR4nO3dy29j6Z3e8ec955AsXUiRPJSqx33zLW17bCeeSToYO4YnwAyQIBcgQBZBBggmQDbJ35FdFtkFWQXIalZZBImDjIHYCDoY2+jxJD1xO253SaKoW0mqklSSShLJc8vi6FCXkqp0IXku/H4Aw222ivpJ5cWjV8/5vSaKokgAAAAAhsJKewAAAACgSAjYAAAAwBARsAEAAIAhImADAAAAQ0TABgAAAIaIgA0AAAAMEQEbAAAAGCICNgAAADBEBOw78H3p3/z...
[ "cone", "cube", "cylinder" ]
null
0
math
grade-4
scalene-isosceles-and-equilateral-triangles
false
true
Is this triangle isosceles?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAB7CAYAAABOxPdsAAAY8ElEQVR4nO3deVyVdd7/8fdhkSMCmpKoQAgeciG38afiSIKCTlnelaOjzeC45FY5LqnIJtJ0u/VzrKymyaXmUXNPpeWkZeZd5DJacd8/EydJS0elcMlkE3EBDvz+qEOoiNs55+IcXs+/Dhdc1/W+6p+P78f3fC9TdXV1tQAAAADYhYfRAQAAAAB30igG7Hnz5qlz587auHGj0VEAAADg5kzuvkRk37596tq1a83P9957r1asWCGLxWJgKgAAALgrt2+wMzMzJUkDLRZ...
[ "no", "yes" ]
null
0
math
grade-6
which-model-represents-the-ratio
true
false
Which model represents the ratio 3 1 ?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAARkAAABRCAYAAADmbNKiAAAEy0lEQVR4nO3dzWtcVRzG8WduJiHE6QRLa6eWhL5gTRAajC8RRChuXHbhyrW4EfwXBKFbVwU34sYuhEI3xWJFsAERQqV2oUOb1E0pzSSbYCfp0CaZXBenQ0fSdua+/O45mX4/EDLJTO59FuHh/ObMnSnFcRyvbEr/tKT1trQdCwBSK5ekfUPSa2PSoRGptPIojq81fccCMIjmqlL5dsv9cHhEev0l10AAkNZ6W1p8IDU2paWWFDW33R0UDIA87BtyfSJJG20panf...
1
math
pre-k
compare-size-weight-and-capacity
true
false
Which car is shorter?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAASQAAABZCAYAAACXMllHAAAcxElEQVR4nO2de1xU1fr/34LMDNdBrt7G0MQbmBl6NMhL2jGwy1FPpn0rj/38Knp+p9Q6Vmpe8pJdNFMrAbPU6oTaSdMCrTRTQTJIyRkVQTER5arMcB2u3z/GGRlBrnsG0PV+vXgxe1h7rbWHvT/zrGc961ntqqqqqjJKIaUI8iugvAqBQCCwCu3bgbMt+DqAtwzaZeirqo7rWrpbAoHgbmeIC7RPLjIcdJJBb0eDWgkEAoE1yK+ApEK4WgrnisBGV274gxAjgUB...
0
math
pre-k
triangles
true
false
Which shape is a triangle?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACQCAYAAADwZHJxAAAGu0lEQVR4nO2dy05bVxSGl7mpTZNW6qBVK3XYVOoLZNIH6TNGIJDIAAagZECAGJwooKI0IBEVCcrAx5djMPgcnw5MUsIlvu299l5r/Z8UKcYY78AHMfv8a/+loiiKk0ui/TOiZk6UFQTA2EyViB5NEv36gOjHGaLSyUVRvGqEXhbQzJNviaben/Vu/DRD9Ns3PQsBGJdmTvSuRXR8SfT3GdFEI+vdAcmASx5N9pwiIkpzoon82h0AuOSjU52CaCLsUoAVIBpgAaI...
0
science
grade-6
identify-ecosystems
true
false
Select the taiga ecosystem. This ecosystem has: long, cold winters and short, cool summers many evergreen trees soil that is poor in nutrients This ecosystem has: warm, wet summers and cold, wet winters soil that is rich in nutrients only a few types of trees This ecosystem has: warm summers and warm winters a rainy se...
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAp8AAACtCAYAAAD2xRSHAAEAAElEQVR4nOz9eZwlVX3/jz/Pqe3uvff09Oz7MCwjOwgCsmiCigsKMYo/YhSXaBSVBIIJXxOj+DFEP6AhGiOKJEa/GsUvGoMg+74NDAzMvk/39N5991rO+f1RdW/37enphmlgVOo1j5rT91adU6eW+6hXvZfXWzw2qvWqNGQNYsSIESNGjBgxYsR4RZAPYGMRxJivdUw8Y8SIESNGjBgxYrzSyAcgtNb6cE8kRowYMWLEiBEjxmsD5sQPH/3pyKwG02JW3dFqlgP...
1
math
grade-6
which-is-the-better-coupon
true
false
The original price of a hockey stick is $52.40. Which coupon is a better deal?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAASYAAACTCAYAAAAjtLSoAAAngElEQVR4nO2deXxV1bn3f2vtfc5JSMhESICEAAmEGYyAiCAOFKwTWhX11d5r66f12l5vrfZ6a9W2tr2tHby1o1p7q7ZXrVpniwODIKAgBBVIIIEMTAEyz9PZe6/1/rEznZx9hr3OPuEkWd9/WvbZz7OexOznrP2sZyCcc37GC5R1AK0GoHNIJBLJkKISYKwCzBgDZLoBcqab890tZ9ssiUQiMVmaBKhHOsx/THQDMxNMryWRSCRDSasBlLYDp73A4Q6AtujmB9I...
1
math
calculus
identify-graphs-of-continuous-functions
false
true
Is the function f(x) continuous?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AAByI0lEQVR4nO39e3RU530v/r/nfpU0uktISCBuRhhxM2DZYHAgMTGJE0hcO21uPW3XOTm5tavffpPm15W1mtKsnLZJf+lxUp/+TmqnxzlN48aJY7CMccCARTAgQCBxEwJ0H0kjzYzmvmdm798fQmOG6wieRzOS3q+1suLZs+etzwyz93z2nmeerdM0TQMREREREQmhz3YBREREREQzCRtsIiIiIiKB2GATEREREQnEBptoFtm/fz/mzZuH7du3Z7sUIiKiGUvHHzkSzR5...
[ "no", "yes" ]
null
1
science
grade-5
predict-temperature-changes
true
true
Two identical blocks are heated to different temperatures. The blocks are placed so that they touch, and heat begins to flow between the blocks. The pair of blocks is insulated, so no energy escapes. Later, the temperature of each block is measured again. Which pair of temperatures is possible?
"iVBORw0KGgoAAAANSUhEUgAAAQQAAACgCAYAAADq8hJGAAAaEUlEQVR4nO3deVyVZf7/8ddZOOzIDiqbGyC4ZijmNlaWlpaVNS3Wb6ZtmpqybWaqSetb2TpT2TpTM9X3O61alqWlaRnuSioSoIKIyL7LDodzzv374+CtdFBBgfsAn+fjkdJ17uW6uY5vbj73de5bpyiKghBCAHqtOyCEcB4SCEIIlQSCEEIlgSCEUEkgCCFUEghCCJUEghBCJYEghFBJIAghVBIIQgiVBIIQQiWBIIRQSSAIIVQSCEIIlVHrDnSF+uZ6Xlr7Cj8d3KR...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAiAAAAC4CAYAAADaI1cbAAAl6klEQVR4nO3deXxU5b3H8c9MJjuEbBC2EEAImyyKLC6ASFVQsaho3drb1qUu171Wa92u4m5dWrfaW/W22lZxQ8CCuIDsIKuEQNgTCNkD2TOZmXP/mGTYAiSQnHNm8n2/Xhg8c87MMzzDl9+c+Z1nHICBiAhgGAZ5bthaBeVe8CgdRKSFuBzQPgz6xkBKBDhQASIi9fJqDVaUWT0KEQl1o+LAZfUgRMQ+tlT5f3aJgH6x/ncrIiItodwLmythrxuyqsBp9YBExD7...
1
math
grade-4
compare-fractions-with-like-numerators-or-denominators-using-models
false
true
Which fraction is greater?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAC5CAYAAAAS5EjTAAAopUlEQVR4nO3df3BU9d0v8HcMyA+Fs+nVFhFnN4TMUwHdBZ2ClGQ3U6H+QBNAfkhvm00x1k617KJ1YG692VSegaplNxfbgev6ZKPPDMgPWfC2QFE5MSlRxJtNBWxrAicTSLjSh5wE6oIN3fvHcg6biJIf5+w5u/t+zTgigT2fcD7Tvvmez/l+s2KxWAxERERERKSJ64wugIiIiIgonTBgExERERFpiAGbiIiIiEhDDNhERERERBpiwL7sH//4B5599llMnToVN954I+x...
[ "3/6", "3/4" ]
null
1
math
grade-6
compare-area-and-perimeter-of-two-figures
true
false
Which figure has a greater area?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAALkAAACgCAYAAABQdM0PAAAGuElEQVR4nO3cT0hUex/H8c8xDTHNP5kPVhCCT6YRBbMQMtF0SoYYaKFZyxYtArMxXGRtLGkRyF0GRhZULt14N7UQF+0uWI2LyiYiiHy6jIlpI9qMnLsYGm4Yt1t2Ovp93i8YPMP8nPkeeM+PwwzquK7rvvskvVyQ5pellCtgXct2pIIN0n/zpP9slJx3S677x5zfYwHeqN0sZccW0nfKN0pVm9LvAGA9m1+WJhPS/z5JLxakrLlU+gEChxUFG9I9S9LHZSlr+W8...
1
science
grade-4
use-data-to-describe-climates
false
true
Which statement best describes the climate of Christchurch? Hint: Summers in the Southern Hemisphere occur in December, January, and February. Winters in the Southern Hemisphere occur in June, July, and August. Christchurch is a city in New Zealand. It is located in the Southern Hemisphere. It has a marine west coast c...
"iVBORw0KGgoAAAANSUhEUgAAAtgAAALOCAYAAACTXGSDAAEAAElEQVR4nOzdd3yV5f3/8dd9RvbeCRnskDDDCoQlUxTZOKiLaq3a2lprW63ab7/fDrvUtq7219qKq1VRcESCgw1CWAkhQICEhIQwssfJOuv6/RFySyRAkJOcRD/Px0NJ7nPf536fc9/nnE+uc13XrSmlFEIIIYQQQgiXMLg7gBBCCCGEEF8nX4sCe/PmzWiahqZpjB492t1xxDfQypUr0TSNUaNGueT+mpqa+OMf/8iYMWMICAjA09OTgQMH8thjj1FZWamvV1RUpJ/...
[ "Winters have lower temperatures and less precipitation than the summer months.", "Winters have lower temperatures and slightly more precipitation than summers." ]
null
1
math
grade-2
symmetry
true
false
Which picture has symmetry?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAaxUlEQVR4nO3deXCT953H8Y/uw7LkS77B2JzG2JjYYGNMyEWTdrbp7HbTNm3Spp3Zbqf3tLtt0lzbNJCmV7LNNtk2O9umOZtt0oRuMxsCIaGUyzYYDLYBAwZfWL5038f+IWT70W1Z8nPo+/on6NEj6TeFdx/pOX6PKBAIBK65gQE7YPEB3gAIIRkiFQG5EmC1GiiRA6JrrkDguJntYRGSfVq0gPSCPfigTA6szQnWSQjJDIsPOGcDxtzAeTsgNnuDT1B8hGReriT...
2
science
grade-3
predict-heat-flow
true
false
Two solid blocks are heated to the temperatures shown. The blocks are placed so they touch. Which diagram shows the direction heat will flow?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAXPUlEQVR4nO3de3hU5Z0H8O85c5/JhVy4JCEhIBCqIlhQVFDxWi9FrXZFd2tb2+12Vx/bp0/X1q7tdp/a7dZqdx/bSi9blYquSCsUEKmIIqBBw1VQIoFAksl9kiHJ3GfOZf84yYQJAaKZnHNm8v08Tx7IyVzemXPO95z3d857jqCqqtoeB46FgYAMSCqIiNLCKgC5FmCWG5hsB4T2mKrW9BndLCLKdovyAOvRsPZLiR2o8mhpRESUDgEZOBIC2uJAXRgQ+yTtDww...
0
science
grade-7
use-scientific-names-to-classify-organisms
true
true
This organism is an agile wallaby. Its scientific name is Macropus agilis. Select the organism in the same species as the agile wallaby.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOy9d7xlZXX//15P2fucW6cDQxOGLl0QBMEAFhSCJmCk2MDEAkbFCBLzCwb1qyTYEbGLBRUhKpLEWEClgwwIA9I7Q2fKbefs/ZT1+2PfuWGkiDCxkP1+veb1mnvP2f05565nPZ/1WaKqGmMk50xLS0tLS0tLS0tLy9PHGINz7o97Dm1w39LS0tLS0tLS0rJmyDkTY/yjnoNpg/uWlpaWlpaWlpaWNccfO742f9Sjt7S0tLS0tLS0tLSsUdoAv6WlpaWlpaW...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA6IAAADMCAYAAABp7h4wAAEAAElEQVR4nOy9ebwcVZn//37OOVXV3XfLHpJAWMK+BZBNEBAQRUHUAWVzA3d0VBxBxvkNDupXmUFxAQR3XFAUXJAZHVlc2IkEDAHZIRACJJD1Lt1ddZbfH6e7b/e9NyEsow7TH17N7a6qU3XOqapOf+rzeZ5HQgjBWov3ni666KKLLrrooosuuuji+UMphTHmb9oHEfmbHr+LLjYGqktCu+iiiy666KKLLrro4sWB9x5r7d+6G1108XcP0yWhXXTRRRdddNFFF11...
2
math
grade-1
square-corners
true
false
Which shape has 4 square corners?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAFJ0lEQVR4nO3dMW8TZxzH8d/5bEcmRw6bJLYDhA5pWSplKxIiE0ywgAQTSDBUwJQsBBDwUvpyOvEKmtKhW9OxBCKRJroOBqk6ISqK7/c8j/P9bFYkPyfrm7Pv7ztfVlVVtXsg/bYv7R1Jh5WAr9bOpJO59O0JadiVst33VfXqTejNwiy7uCC1X+9PHoy70oX5SYXA19o7knbeSX8cSL/uS603h5M/EBmm6WQ+aUqS3h5JraN//QGYpo9N/V1JrbCbguOC0GBBaLA...
1
math
grade-2
identify-multiplication-sentences-for-equal-groups
false
true
Which expression describes the model?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADXCAYAAAAgGib5AAAqk0lEQVR4nO3d+Vri2prH8TcMYRBlEBVB6+x9H31JfTl9SX0f5+wqQRwIMiOQpP+wiVmACpqQ6ft5nnoOULV1HeWXvKxRs23bFgAAAACeSAXdAAAAACBOKLABAAAAD1FgAwAAAB6iwAYAAAA8RIENAAAAeIgCGwAAAPBQJugGJJVpmrJYLGS5XMpyuRTTNMWyrJ1/1n8nIpJKpSSdTksqldr5J51OSzablWw2K7quSzqdDvj/KXA85ArwB9kCDqOxD7Z/LMuS2WymXJT...
[ "3×2", "4×3" ]
null
0
math
grade-4
multiply-fractions-by-whole-numbers-using-models
true
false
Which model represents the product 3× 1 6 ?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAT4AAACOCAYAAACohWTxAAAFT0lEQVR4nO3dz2rUVxjH4XfiH4JVO2CpdNEmm9alZlXpxsFFV/UGuihzBwrddOdkWSh4C4begV6AM6IgbkzcRQVn2kUVWxgTDaM1/LoYYmsJA86cOEPe54EQQ+B4yBc+BLI4taqqqievIx5tRWxuR7ypAmBfOViLOHYg4ssjEScPR9SevKqquxvTvhbAh/H18YiDD7eGX3x2OOLUR8MqAuwnm9sR6y8j/ngd8WArYm7jzfAbogfsV8cODBsXEfFiO2Ju+z/fANi...
0
science
grade-4
use-evidence-to-classify-mammals-birds-fish-reptiles-and-amphibians
true
false
Reptiles are a group of animals with similar traits. The following traits can be used to identify reptiles: They have scaly, waterproof skin. They make eggs with shells. Observe the animals and read the descriptions. Select the one animal that has all of the reptile traits listed above. Cobras hatch from eggs with shel...
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAp8AAACmCAYAAACcAuREAAEAAElEQVR4nOz9V9Bm133f+X5X2PnJz/Omfjuju4FGBghmk2IQKVKURAUq2xpbljUauWyP7bLH9hnZY2nKc2y5Rj6Sw1jHtmzJlqwsKphZDCAJEIHIDTTQ6Nz95ifvvPda56JPTU2f+wGqjvbn7rl4q96L/av61d7r/1/iyZm1d0bQVjQajUaj0Wg0Gv+3WNRwPgYxr6xtimej0Wg0Go1G4/9uixqEtda+2f9Io9FoNBqNRuPPBv1//fHz332G+bTkyxcmXC40HjV...
1
math
grade-5
parallel-sides-in-quadrilaterals
false
true
How many pairs of opposite sides are parallel?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAcaElEQVR4nO3dZ3hd5Zku4NfGGBfci4RxA2xTRDBgwEBoriQTSCGFAIGAKSdtJpnJSQgJPZAGJJnMOSk0m2LKZM6cNEiCCxgSiG16DwbcjXvBFUeW5ofNkrYM9pa0t9ba2vf96/1kae/34tdzPddifW1qa2trAwAAKIi2aS8AAACtiYANAAAFJGADAEABCdgAAFBAAjYAABSQgA0AAAUkYAMAQAEVNGBf/+SkOHjy2fHQglmF/FgAACgZbQp10czraxfF0LvPjIg20Tb...
[ "1 pair", "no pairs", "2 pairs" ]
null
2
math
grade-1
estimate-to-the-nearest-ten
false
true
How many marbles are there? Estimate.
"iVBORw0KGgoAAAANSUhEUgAAAlgAAAGxCAYAAAC+xcgLAAEAAElEQVR4nOz9e5hlVXUujL9zrrX3rqquqq7qLvreDXSD0Jd4DhxAuXiJSvMoiBHhKOaLMRD9nWPid0wkeo6/L+Ileoya30MeYo6HHEii3xPAgAYSPYIIHq4NGlGufaFDQ1dVc6lbV9W+rznH748x5lxz7arurntVwx4Jrt67dtWea6255hzjHe94hyIiQtOa1rSmNa1pTWta0+bM9GIPoGlNa1rTmta0pjXttWZNB6tpTWta05rWtKY1bY4tXuwBNK1pTWta09hGSwZ...
[ "about 40", "about 90" ]
null
1
math
algebra-1
identify-linear-functions-from-graphs-and-equations
false
true
The graph shows a function. Is the function linear or nonlinear?
"iVBORw0KGgoAAAANSUhEUgAAAfwAAAH8CAYAAAA0Uh0TAABpSElEQVR4nO3deXxV9Z0//te5W/YNAklYAiqLgoDiCkLVsaNWnbagLWjV2qpVW2un853Or9/++u132q84/f66zLSj1rWKnbZWp2hlE1AQaKIgEYIJiBAhC1lvcm/uftbP74/kpolJIDe5n9wlr+fj0UfN5Z5XPjnnnvM+y/ueowghBIiIiCit2RI9ACIiIpKPBZ+IiGgCYMEnIiKaAFjwiYiIJgAWfCIa4I9//CMqKir6fjYMA48++ihCoVACR0VEY8WCTynNawCP1hn...
[ "nonlinear", "linear" ]
null
1
math
grade-2
greatest-and-least-word-problems-up-to-100
false
true
Russell kept a driving log to see how many miles he drove each day. On which day did Russell drive the most miles?
"iVBORw0KGgoAAAANSUhEUgAAAVsAAAC9CAYAAAAdpd7GAABA6UlEQVR4nO3dd1QUV/vA8e9SFgWk6KJiw4ZgSUQsMRoRYo2xxhq7iTHGGkssb6yxvmiM/RcDRs0biS2KJSpGBU0MakQQiRWUYgQFFQQWqfP7Y2VkpS5V9H7O2XPY2Tszz+wsz969c+9chYPbAAlBEAShRBkATO/5WVnHIQiC8Npac8QNvbIOQhAE4U0gkq0gCEIpEMlWEAShFIhkW84kpukz/XJz5gc2IzFNv6zDEQShgESyfYX4PbbkwL2aeSbRG0/NiEk2IizRGPe...
[ "Saturday", "Friday", "Wednesday", "Thursday" ]
null
0
math
grade-2
identify-the-fraction
false
true
What fraction of the shape is pink?
"iVBORw0KGgoAAAANSUhEUgAAAQQAAABkCAYAAABgi07kAAABsklEQVR4nO3WsU0cQBRF0b8rV7AUgeSckMTJZi6CJmjBVVCEs01IyOgAFwEljAPEbWFW4pwG/kvmag5rrTUAM/NjZub1z+t8/PvYt2LNzGHf+e33Z+Z0e5q7x7u9I/j2jjOzNwYz2x/j9vsz8/72vnsCfP4Qvtz//rVlxMvf55mZOT+dt9y/PFyu4j7sdtw9ALgeggBEEIAIAhBBACIIQAQBiCAAEQQgggBEEIAIAhBBACIIQAQBiCAAEQQgggBEEIAIAhBBACIIQAQ...
[ "7/10", "1/2", "1/3", "1/4" ]
null
2
math
grade-1
names-and-values-of-all-coins
false
true
Which coin is this?
"iVBORw0KGgoAAAANSUhEUgAAAJkAAACZCAYAAAA8XJi6AABP70lEQVR4nO19a2xU57nu45vs8fg2ZsaxZzwe2yGOYww4CRYuoCoNQlEAJTSbvSt+RDSp1I0qFXp0EI10VJ2eUx2prXKkJpWq7ko7TZQf0d5lJ6QCosoijSqgIJPGhonruMT2eBjb8RiPb+OLbI/PjzXvO+/3rW+NTUIS0p5XQozXzKxZl2e9l+e9fDlra2v4/2LJ6srKp74Yefn5OXfzWP6eJP/LPoAvS3RALX/yMSLTywCA+cEbvH0oNob6QLXyf/OWFgDA4tQkihu...
[ "penny", "quarter", "dollar coin", "nickel" ]
null
0
science
grade-5
identify-vertebrates-and-invertebrates
true
false
Select the vertebrate. Hint: Mammals, birds, fish, reptiles, and amphibians are vertebrates.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAEAAElEQVR4nOz9d5BlyX3fiX4yj7vel3dd7Xt6emZgBmZAEIAIkCBoRIkyK5GSVnoyT4rVey8kRbyQ9HYjdvcpZHdfyO1KK7OrlSjRiRBJ0QAkARJ+ZoDBmJ621dVd3lzvzj028/1x7r1V1d0DAcL+sRvBjKjuqnPPPSdP5je/+f2ZzCNe7Wp9JQt5g98tv1v+T1n6MdwdwkEAZRO+p5Qcl78L3N8t/2cveQOuZJPfB/HJcfm7wP3d8n+FMsFpqE+OmU878SPH6ol...
3
math
precalculus
find-limits-at-vertical-asymptotes-using-graphs
false
true
The graph shows f(x). The dashed lines are vertical asymptotes.
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AACbS0lEQVR4nOzdeXhU53k3/u9skkb7BpIQSCAWgQCxY4PBNjZ1iLcEJ46dNImdJm6SunaSNn6bpGnipm7etK6TJnH8ksWNneXX1NSOY2NjgwNmNZsAgcQmBBJa0DLSaDT7WX9/SDNCIMFIOkcz5+j7ua42ZnTmPrdGM2fueeZ5ntuiqqoKIiIiIiLShDXeCRARERERmQkLbCIiIiIiDbHAJiIiIiLSEAtsoglkx44dmD59Ou655554p0JERGRaFi5yJJo41q9fj8985jN...
[ "$\\lim _{x \\rightarrow-3^{+}} f(x)=-\\infty$", "$\\lim _{x \\rightarrow-3^{+}} f(x)=\\infty$" ]
null
0
math
grade-4
compare-decimals-using-models
false
true
Compare 0.6 and 0.71. Use the models to help. 0.6 ?0.71
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAC0CAYAAACuelsNAAAKy0lEQVR4nO3dUWjV9f/H8be2wsrBAjVTI3YRFTRcEUSZRoQVGhWZdZJvYZE3FUWWFBKRWhh2EV1E3QSWJ/tCKAUmFURESJkLDxwkECyoFBIxK2c2i/0vxP1/Szfdeu+cuR4P8MKv5zU/q+/Fk+OXs3G9vb29AQAApBjf7AMAAMBYIrABACCRwAYAgEQCGwAAEglsAABIJLABACCRwAYAgEQCGwAAEglsAABI1PJvxkVRSzoGY0W12tmUv9e9yD81614EAO9gAwBAon/...
[ "=", ">", "<" ]
null
2
math
precalculus
determine-one-sided-continuity-using-graphs
false
true
Is f(x) continuous from the right at x= – 5?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB1DElEQVR4nO3deXRb550f/C92cAdFiqREiaRlbaZEbRatjYrlyLE1VuJYclLJfiexM5lMnWY/7bRz0mlOJ3XdtDOZee1xPEna1HbaTBa9ke2xZEqRtZuKFtISRVIbTYubKJAECYBY773Ave8fEGBCKyHdhyDI7+ccH4sg8OOP9xIXXzx47nMNmqZpICIiIiIiXRjT3QARERER0WTCgE1EREREpCMGbCIiIiIiHTFgE1GSAwcOoKqqCps3bwYAfO5zn8Nbb7110/sqioL...
[ "no", "yes" ]
null
1
math
grade-6
identify-complementary-supplementary-vertical-adjacent-and-congruent-angles
false
true
Which angle is supplementary to \angle{2}?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAD9CAYAAACGLQCpAAAqU0lEQVR4nO3df3RU9Z3/8degYYi2nSE2wtaETHTXYKtkxrSAkj2ZAObHNv0m2FLIaZXE7Z5gT6XhHHdB7a6hVStne46/do9g3U3Yehayujg5iyb8ntQghIqZACrZVTOQyIkbDXdaLCZI5vsHmykhBPJjZu5M8nyc0yPk3rn3Pad6zosP78/nbQkGg0Eh7Px+vxwOh9llAAAAIMqmmF3AROT3+7VkyRKzywAAAIAJCNgR4Pf75fP5tHTpUrNLAQAAQJQRsCPgrbfekiS...
[ "\\angle{1}", "\\angle{3}", "\\angle{4}", "\\angle{5}" ]
null
3
math
grade-4
is-it-a-polygon
false
true
Is this a polygon?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAD7CAYAAABQdOO0AAAap0lEQVR4nO3dV5TW5bmG8WuGMg5VhqaAlCWCoESQpiK9hZEU0zTNra4Yu0ai7rWwHFhYa0fFErvukGiSrdF0HLYwVAGlqgFBFBdFQBAYHGAYp3774HWWO4mF8s28X7l+R/OcMPfhzX898z45iUQigSRJkqSkyI0dQJIkScokFmxJkiQpiSzYkiRJUhJZsCVJkqQksmBLkiRJSWTBliRJkpLIgi1JkiQlkQVbkiRJSqLDL9iLHofdG+sxiiRJkpT+cg7rkuPm5fDsZeH...
[ "no", "yes" ]
null
0
science
grade-6
identify-elementary-substances-and-compounds-using-models
true
true
Look at the models of molecules below. Select the elementary substance.
"iVBORw0KGgoAAAANSUhEUgAAAQwAAAAiCAYAAACqXedhAAAJGklEQVR4nO2cW0xT2R7GPwy7tuVaRyYmQA0YpBdA5UGZRDOJQRQvgUcxIfEIGhDjGEDimTMBNWe8DQIeLzMP4Hkx0cSXEm9AfHMYZSKEWFrwAWIqTRyLFsoAbTfB84B1Ova29t6Lss1Zv4QX1lr/9TUr/brWf11iPnz48AEMBoNBwIrlFsBgML4cmGEwGAximGEwGAximGEwGAximGEwGAximGEwGAxiYqU0drvd4HkeHo8HPO8FAHCcAitXrgTHcVAqlVRERpuBgQG...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAbsAAADMCAYAAADqOQ3TAAAtd0lEQVR4nO3deXAc5YE28Ge65x7dliXLsmVsYyzLB9gf2IDNJhhsMNgb1+aPTXZDlVlYwhWSYOyP8AHhWghJwCQBsqnlCFuuImw2tYSFcIQtkuU2tvFtiINsCx2WRtJIM6M5+pj+/ujpnp6xjpE0kqXW86vqkjRHzzsjux+9twOABiKiPHzSq2FhACgWz3RJiPoXUYHP+4A2CSh3AmvK9NuFM1oqIppUGHQ00RWL+r9TAIiqmdsZdkSUNwYdTQbGv1PZ0m7JsCM...
2
math
grade-3
read-a-calendar
false
true
What day of the week is February 15?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAF2CAYAAAAbcOzWAABW+0lEQVR4nO3de1yUdf7//wfDQRQFRE4qmigqHvCYeUCi1NKy01brd3Xt55adtT24q7m0Vp9tzc0Ou5m72W6WqVtauiZqpWkLHjEVRcVDAiIiAiqCcj7M/P4gRgnUQRkGLp/3261bMtc1w2tezFzznPf1vq7LyWKxWLhMQkIuBw9e4Pz5UkRERETkxrVu7Ubv3p707evt6FLkJuB0ecBPSMjlzJkShg71xdXV2ZF1iYiIiBhGWVkFO3acxde3Gf36eTu6HDE40+U/HDy...
[ "Wednesday", "Tuesday" ]
null
1
science
grade-3
identify-solids-liquids-and-gases
true
false
Select the gas.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AABUR0lEQVR4nO29d5xkV33m/T03VA7dXZ3D5DySRowyEiAERgYZsDE4AbbXBhunXYPtNbzv8jqx+669thecWdtg1n5t4wALwsYEgRASiiNGozB5pqdnejqHylU3nPP+ce69Vd0zJE3PqDWuZz53qm7oqhuees4vnXPE40WldqYha9JBB1cUZR+OVmHKgW4L7ujS240OITt4oZA1YWdav6/4re1Gh5AdvJAI+eeq1jbjhTmVDjr4xuiQsoN1hw4pO1h36JCyg3WHDik...
3
math
pre-k
ordinal-numbers-up-to-fifth
false
true
The first picture is a boat. Which picture is fourth? first
"iVBORw0KGgoAAAANSUhEUgAAAaUAAABdCAYAAAAFZHluAAAbXElEQVR4nO2df3AUVbbHv90zE5KQSUgIv5KIggn5IQKCm8QtwayQFKwgSOJTwloSXY1b9QyxBK11QcLK/hCzLolWmSAadmsF1ITdFRTfBHxRrHqJBY+IvAkQ8ME6SVAwj2QggZlM9/ujM7+S+dEzmZ7p6TmfKkvSc6fvSeqce+49955zGZ7neRAEQRCEDGBDLQBBEARBWCGnRBAEQcgGyZzSVTOPGf/Rj7s+M+KqmSKEBEEQhHf8ckr/6DFj6+kbHp1Ny5UhXBjg0N5...
[ "boat", "bucket", "crab" ]
null
0
math
grade-1
simple-fractions-what-fraction-does-the-shape-show
false
true
What fraction of the shape is green?
"iVBORw0KGgoAAAANSUhEUgAAAU8AAABkCAYAAAAG0bKzAAAVcklEQVR4nO3dZ3hUZd7H8e+ZSSYhPYFUQnqoQQ0QUAgRxIi7IFgQF5FiAV0LqI+Kug/2uiKPa7t0bbuoK67AAgosSCgq0ksohpJASEiFtEmdZMrzYsKsLAgkzMyZSf6f6+IFM5Nz/8KLH/ecct+KxWKxIIQQok081A5wIQcqc8mtPk5eTQG51QWU1J9E31xHXUsD9S0NVBn0ts8G6vzw9fTBz9OHQC9/gr0CiPDtRqRPGBG+3Yj2i2BAWD+8tToVfyMhREeguNLM02Q...
[ "1/5", "1/4", "1/2", "1/3" ]
null
2
science
grade-5
match-chemical-formulas-to-ball-and-stick-models
false
true
Select the chemical formula for this molecule.
"iVBORw0KGgoAAAANSUhEUgAAAV4AAAE9CAYAAABDSwruAABrZUlEQVR4nO2deZwjVdW/n3urknR679l3hplhGIaBYUd2lEVFEBAX+CEKiqgoILKLvG6vyCIIIju8rCIqsqqICArIvm8DA8zCzDB772tSVff+/qiqdCWd7k6605kG7jOfTNKVSlUlVfdb55577jlCa60xGAwGQ9mQm/oADAaD4eOGEV6DwWAoM0Z4DQaDocwY4TUYDIYyY4TXYDAYyowRXoPBYCgzRngNBoOhzBjhNRgMhjJjhNdgMBjKjBFeg8FgKDNGeA0Gg6HMGOE...
[ "PCl", "PCl3", "H2PCl3", "C3PCl3" ]
null
1
math
algebra-1
perimeter-and-area-changes-in-scale
false
true
Look at this triangle: If all three dimensions are doubled, then which of the following statements about its perimeter will be true?
"iVBORw0KGgoAAAANSUhEUgAAABUAAAAOCAYAAADABlfOAAAA00lEQVR4nM1TuwmEUBAcX+CrwEjEwCoswcgCXgEGBgaCDdiBDSiIZTwswMgKLMAKDGQM7hDlBL1DOAc22N8wy+4aJImbIX5pGoYBvu9DSokkST4L+MY4jlRKMY5jnkEpxSzLOE0TSdK2bXZdt+YFAFRVBcuy0DTNJaV93yMMQ5imeVywVZCm6anSKIoIYLUgCHZ+nuf8mpQkPc9j27arfzj+3XguqRAC3Jz7LaSO40BrjXmeXwGSLMtyt0EArOv68qK01nRdl1JKFkV...
[ "The ratio of the new perimeter to the old perimeter will be 1:2.", "The ratio of the new perimeter to the old perimeter will be 4:1.", "The ratio of the new perimeter to the old perimeter will be 2:1.", "The ratio of the new perimeter to the old perimeter will be 3:1." ]
null
2
math
grade-1
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?
"iVBORw0KGgoAAAANSUhEUgAAAMYAAACECAYAAADLC1Q6AAA3cElEQVR4nO29eZhdV3nm+1trn3NqkFSlkmyVBss22JI8G4ztyDGYwQQSMH0hDI4xuQ44Y3e6kwC3uU+uSafT9z5PMwS43Wl84QYS0oFg3IwNOIwmGLCxwVieQLJlW6qSLclSlapUVWfae339xxr22qdOSVWlU5IszvtY3rX3mfZae33rG9e7lIgIXXTRRQH6RN9AF12cjOgKRhddtEFXMLroog26gtFFF23QFYwuumiDrmB00UUbdAWjiy7aoCsYXXTRBqVOf6HZ8zD...
[ "certain", "impossible", "probable", "unlikely" ]
null
1
math
grade-1
match-analog-and-digital-clocks
true
true
Look at the analog clock: Which digital clock shows the same time?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABYcUlEQVR4nO3deVib15k3/q8QSIAlBBI2SF4QXiBxIJDgprXbFEhSO52EGCdpOnHb17idpL+20wZPZ9J1xridJX07U0Omy9s1pNO6WzzGxWljN4lF0pomNbEIjm1wbIQXATbCAmEWgdDvDyJVGC1Hu4Dv57q4jPWc5zx3YnFx6zz3cx+J0+l0goiIiIiIIiIp3gEQERERES0kTLCJiIiIiCKICTYRERERUQQxwSYiIiIiiiAm2EREREREEZQc7wAo/hzTE5iaHvf4GsP...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA5AAAAEJCAYAAADiusiGAABjNElEQVR4nO3de1zU150//tdwGS7OMMigwHhh0AiJgpBgk2qbgEmq2U2ImKTZjY0V22p/3ZoGN2nabrurabu77fYiprfvJtmGRGu3ra4YTBttEoeklSaVODgmCiY6eJkBZXBgkMvAML8/CFOQuZzP3Blez8eDhzCfc87nLc4k855zzvvInE6nE0REREREFBQymSzSIRCFTFykAyAiIiIiIqKpgQkkERERERERCWECSUREREREREKYQBIREREREZEQJpBEREREREQ...
1
math
grade-2
place-value-up-to-thousands
false
true
What is the value of the underlined digit?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAAiCAYAAABlRa5TAAAGUklEQVR4nO3dTUhU3x/H8c+MEj5kOQNTizIMKaGSKLKwB1JXuREqiNBFD5RZi5AWSpARrUIIc9MkURQZaFmLCIqKtIXiZihFtFaNWVaWNjam5tP8FuL9zfiQ3pnb/4d/3i8YmOO533PPndWHw/UcWyAQCAgAAACAJez/9QQAAACA/ycEbAAAAMBCBGwAAADAQgRsAAAAwEIEbAAAAMBCBGwAAADAQgRsAAAAwEIEbAAAAMBCRsD+9OmTzp07p7S0NC1ZskTLly9Xdna...
[ "50", "5", "5,000" ]
null
0
math
grade-5
parts-of-a-circle
false
true
What is \line{MN}?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADICAYAAACdx5VnAAAl2ElEQVR4nO3de3gU9aH/8c9ukt1NIDdIArlAgAAhXBUhCKggAoooeKu9WfVoRSx6oPVglXqpPv5OW3usWi9VwIp6tPIrtFbBQkEBrUXECyFySSCYBBLInSSQZJPN7vkjzbAr4SYJM9m8X8/Dw3xnZmc/CfPHZ4fvzNp8Pp9PAAAAAIJCqNkBzgWbzdbh78HnJAAAAFhBlyj4lG8AAAB0FXazAwAAAABoP3abzaaNGzcet2HChAlKTEw8bn1+fr5sNptefPFFLV26VDa...
[ "chord", "diameter", "center" ]
null
0
science
grade-5
identify-mammals-birds-fish-reptiles-and-amphibians
true
false
Select the mammal.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAC5bElEQVR4nOz9Z9B12XXfif3W2vuce++TnzeHfjsHdKPRDYAIbIEkmANIiJIoypI1Mj0aT41qyvLYZdkeecpTHtkzVpU9VZKrbKukqqFnFKw0HlKiSDGTYgBAgERoNIBudH5zeuKN5+y9lz/sfc69b6NbA7D5YVzF2/X0+4Qbztl77RX+67/Wks8emj2xDpuOP3788eN/kI/jCC9O4HoDux6+Yyf/Xv9YcP/48T/0x6aDJ9bz9+O4/L3+seD+8eP/Hx6dnLa2/J1...
2
science
grade-3
classify-fruits-and-vegetables-as-plant-parts
false
true
People use purple artichoke plants for food. We usually eat the part of this plant that makes seeds and fruit. Which part of the purple artichoke plant do we usually eat? People use purple artichoke plants for food. We usually eat the part of this plant that makes seeds and fruit.
"iVBORw0KGgoAAAANSUhEUgAAARoAAADKCAYAAAB6+o8hAAEAAElEQVR4nOz9eaxlWXbeif32dIY7viEiXgwZkRmVc2VNWaxiDSSrikVJpEiKLEoyaUuW1JLcEgQJcks2Wm50uwHDA2zYkO0//E/LQMOwW9RodmtqtdSUWCSLFFkDa67KOTIy5jfe6Qx79B/73BdVbAi2ITdTgPsAL19kxHv3nnPuPmuv9X3f+pb4i3/xLyb+u+O/O/674/8vjr/+1//6u/K+GuDvf+P/gZQSosC7QIyQosB1gb7vKXRBSgliGL4nUkoIIgkIQiGURGu...
[ "the stem", "the flowers" ]
null
1
math
grade-5
compare-fractions-and-mixed-numbers
false
true
Which sign makes the statement true? 1 3 1 12
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACWCAYAAADkHv8wAABHxklEQVR4nO3dd3gU19X48e+stqj3XkBIokhU0Xu1cbexjXGvOHbsOMmbvPklcZziOD1vimMnrnHvvWHAmN57E5IQICTUe9f23fn9MZJoAlRWDc7neXjAszN37q6UJ2funnuOoqqqygBnMBh48skneeKJJ/p6Kr3KZrORlZVFUVERlZWVNDQ0ABAYGEhERATJyckkJydjMpn6eKa961L9fRBCCCFE/6Dv6wmIzrPZbOzbt499+/Zhs9nOer2hoYGGhgZyc3MxmUykp6e...
[ ">", "=", "<" ]
null
0
science
grade-8
use-scientific-names-to-classify-organisms
true
true
This organism is a dromedary camel. Its scientific name is Camelus dromedarius. Select the organism in the same genus as the dromedary camel.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOydd5glVZn/PydU1b23c/d092QmD2EAJWdFJCPigkSRsMoCIihKUFcUcdEVFRXBCILCgoqgYiSoiySHOIk8M0ye6Znu6e7bN1Wd8Pujbl8ZGIIyP91l6/M8/czcuhVOnTrV/Z73vO/3Fd57b4zBOUdGRkZGRkZGRkZGxv9OpJRorRFJkvjMuM/IyMjIyMjIyMj434+UEpkZ9xkZGRkZGRkZGRlvDpxzyH92IzIyMjIyMjIyMjIythyZgZ+RkZGRkZGRkZH...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA6IAAADMCAYAAABp7h4wAAEAAElEQVR4nOy9d7hdZZn3/3nKKrudfk56CKTQe5eiqFgQsRfUsTBVhkHlN9hmxnlRRx3xHR2xV1B4rSMqVoqVZiBACBAgIT05SU4/Z5dVnvL7Y+0cCUWC8uqM7/5cVy7Obmuv9axnbdb93N/7ewvvvTfG4JyjQ4cOHTp06NChQ4cO/zORUqK1Rgjxp96VDh2eENkJQjt06NChQ4cOHTp0+J+Pcw5jzJ96Nzp02Cd0Jwjt0KFDhw4dOnTo0OHPA+cct015DqxATf2...
0
math
grade-1
compare-vertices-edges-and-faces
true
false
Which figure has fewer vertices?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAIAAAACACAYAAADDPmHLAAAWCklEQVR4nO2deUCU1frHPwyLiCCmuKAW5IJKJqWJVJrbvTfTklzDBDEFUcvEJZV+FWB51TDBSnPBK+rVjExxySK5Qm6VICK5gahjsSmDAoMIOMz7++OVEVe2Wd6R+fyjwHDOo+c75z3nOd/zjJkgCEJuOWSUgLICVAImHmMszMDOHDrbQGsrMMstE4RjRYYOy4Qh6NMULM6XiF84WkGXJqI6TDy+KCsg7QbklEN6CciKVOIPTIPfMLAzF8caoLgCZBVVfmCiYVA...
0
science
grade-4
identify-vertebrates-and-invertebrates
true
false
Select the invertebrate. Hint: Insects, spiders, and worms are invertebrates.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAADakklEQVR4nOz9WaxtWXaeiX1jzrnW2v3pz23jRp+RPZnsRUqlgqvUuOCCgXKp/OAG8INhG+UG8IMB26gXV9mGjbJKsliCJEikJEuyKJIS1ZBiJhuRTJKZZPaZjIzM6G80tz/92d1ac87hhzH3PiciI1hBhh7KADdwcbtz9tl77bHGHOP///EP+dKJ6nNDGHv+5PEnj/9WPs4SfHcKd1vYCvCnN+3f3Z8E7p88/tv+GHt4bmh/Pk8X/+7+JHD/5PH/D49VnHZ68W/...
0
science
grade-7
compare-magnitudes-of-magnetic-forces
false
true
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes.
"iVBORw0KGgoAAAANSUhEUgAAAksAAACtCAYAAACgPzu0AAA/AUlEQVR4nO3dd3hUVfoH8O/0SWbSGymQAEkoAUKVqkLoWEClWEBFZC2ILnYXV1dRV9FVERRBBUSERSwIgoXeFGmhJJAQUkjvbSaZPvP7I5v8QMJkZnLnnjuT9/M8PrtA5p43cPLe955z7jkim81mAyGEEEIIaZWYdQCEEEIIIUJGxZIHO336NEQi0VX/yeVy9OzZEy+++CK0Wq1T15s+fTrGjRvnUiznzp1Dz549ERgY6NLnCSHeYdq0adfkpbCwMIwdOxYHDx506lp...
[ "The magnitude of the magnetic force is greater in Pair 2.", "The magnitude of the magnetic force is the same in both pairs.", "The magnitude of the magnetic force is greater in Pair 1." ]
null
0
science
grade-8
use-scientific-names-to-classify-organisms
true
true
This organism is a Eurasian beaver. Its scientific name is Castor fiber. Select the organism in the same species as the Eurasian beaver.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOy9d7hlZXn3/3nKWmvvffrMmT7DDDN0UZSAYoEECbERSwQLalSMUdFo9LUFf4lBjRqxKxqjMWg00VcTe1QsSVQMIsUBQXoZpjD11F3WWs/z3L8/nrX3zMDQXo+a4Ppc17lmTtmr73Pu576/9/dWIiLOOUII1NTU1NTU1NTU1NTsRWuNtfY3fRj3C10H9zU1NTU1NTU1NTUHJoSAc+43fRj3C10H9zU1NTU1NTU1NTV3z/+2eFn/pg+gpqampqampqampmb...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA6IAAADMCAYAAABp7h4wAAEAAElEQVR4nOy9d5gkV3nv/znnVOrcPTlszspCCCQyQiZaRmAk2ySTLjZgDIYHA4afAwZjbLAx2RgbgwkXLmADxphsDAiEUFrlsEG7Ozt5pnPlOuf3R82MtEhIq2sBvrg/z9OPNN1dVaeqTvXWt973/b7CGGPSNEVrzYABAwYMGDBgwIABA+5ESollWT/vYdwvhBA/7yEMGHCfyIEIHTBgwIABAwYMGDDgntFak6bpz3sYAwb8wmENROiAAQMGDBgwYMCAAT+Z/9f...
2
math
pre-k
count-scattered-shapes-up-to-10
false
true
How many stars are there?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAFcCAYAAAC9R8qGAAA5FUlEQVR4nO3de3zV9Z3n8Xcu5AKBIJGJEGmkUBCmEWXEiggCAupEQcRqqa0KXiDdquOtl+1qebQ6dsZ21864uz62nc7a1dVpLXXt1IpcBBS81UsHciEhYoxCFAISJSThkLN/fD0SQk5yLr/f+f4ur+fj4QNyLt/z8QDJ5/x+79/nmxWNRqMCAAAAEAjZtgsAAAAA4BwafAAAACBAaPABAACAAKHBBwAAAAKEBh8AAAAIEBp8AAAAIEBo8AEAAIAAocEHAAAAAoQGHwA...
[ "5", "7", "4", "1" ]
null
1
math
kindergarten
count-money-pennies-and-nickels
false
true
How much money is there?
"iVBORw0KGgoAAAANSUhEUgAAAQsAAABECAYAAACWLBBfAABP8UlEQVR4nO29d3xcZ5n3/T1zZs70pjrqXZZc5Cb3ktipjkkjjbJJHhZIgM2b3Zewy+6Gh112F3jeXSAssBAC4dkESIVkEydO4pq4xL1btorV62gkjabXc877h3xOLDDBToFlP/r9Y0mWZs59zX1f91V+13UJqqqqzGAGM5jB74Hhj/0AM5jBDP40MKMsZjCDGVwSZpTFDGYwg0vCjLKYwQxmcEkw/iHfTFEUZFlGlmVSqRSTk5MoikI8HicWixGJRLBareTl5eFyuRB...
[ "16¢", "11¢", "12¢" ]
null
0