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 | pre-k | classify-shapes-by-color | true | false | Which heart is pink? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGvElEQVR4nO3dP2wTZxzG8ccJdpXYbiVDaLzgDHEqoAtpEExnhnbApgMUBFMZClLiqUhIXYKRgCVIFQylQUIdoBmKUKWqTcLSIc5SCm1Y+CNyHewFp3LDgJ1UGKLrcDgCSv7Zd7/L+97zWYgT4vcN+ebuvcsdDliWZc3UgL/mgcoC8MICUdM2BIBoK5BsB94PAYGZZ5Z1+6nX0yKd7XoX2GDO2w/iIeCDsF0hUbMqC8CjOaBUA6bngZanL+wPMDJyUrTVbgoAqgt... | 3 |
math | algebra-1 | domain-and-range-of-absolute-value-functions-graphs | false | true | What is the domain of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABj1klEQVR4nO3da3RcZ53n+1+pqnSXLFmyJUex5DiODXYsO06cYMcmSTskmQQCNtAOnAbCSTcNDYRhZjGL6QVMNycrzRoa+pABhmGaIUkvzmLIENIdB8U4xImNTKxYsWVLuTmyLVt2dL/VfVfV3ueFUsKKb1XSflwq6ft5k6is/dOj/VTt519b+1/b4ziOIwAAAACuyMv2AAAAAIDZhAIbAAAAcBEFNgAAAOAiCmwAk9TV1Wnfvn0TXx8/flwLFixQV1dXFkcFAEDuoMA... | [
"$\\{x \\mid x<5\\}$",
"$\\{x \\mid x \\geq 0\\}$",
"$\\{x \\mid x \\leq 0\\}$",
"all real numbers"
] | null | 3 |
math | grade-6 | identify-equivalent-expressions-using-strip-models | false | true | This model represents the expression h+h+h+1+1+1. Which expression is equivalent to h+h+h+1+1+1? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAA+CAYAAAARUWyzAAAHe0lEQVR4nO3db2xV9R3H8U8PvW3v7d8LtKzQFVoEyh+ZgUgMYEi2LBnGLpEYEyZxasz2wLg/WbaZLJtxGKNuLsueLPPB/hhnjfpgbFmiLiYuwBSE6DIrImUtDK5FKu1ty/3TW3r24KbtqbDZ6O/+fr3nvF9Pejn3wfmeL0nz+f7u7/5a4fu+L0m5S306f/CnGj3zugqZEYVNfdsWrd/38sy/jz7W7LAau7Y9eHHmNc+NUqHfdgX7/d4zX9HoueMOqwmXWKJJTR3btXz... | [
"2h+3",
"3h+3",
"3h+4",
"4h+2"
] | null | 1 |
science | grade-7 | compare-magnitudes-of-magnetic-forces | false | true | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | "iVBORw0KGgoAAAANSUhEUgAAAiAAAACXCAYAAAAs2eD4AAAZsklEQVR4nO3de3SU9b3v8fczM0kGCMRAEgMChhAgElAUESkeBOVigKJL8XIWtMqygNVqy67dm12hW2tZRz3tEVtdUvBgQSpu2a2Kl1ZbBeFARaHlIvc7NBdUQkLuyUzm/BHJJiaEmcw8t8zntdYsTOaZ3/MdeObjd57bzwiFQiFERERELOSxuwARERGJP2pAXGz79u0YhtHskZiYSG5uLvPnz6eioiKi8aZPn8748ePbVcuuXbvIzc3lkksuadfrRcRaTsmPPXv2MG3... | [
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | null | 1 |
math | grade-4 | estimate-angle-measurements | false | true | What is the measure of this angle? Choose the best estimate. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAA/CAYAAADaDb8WAAAEbUlEQVR4nO3dT2jXdRzH8fdPBFM3xVWGW3UojC5JEP7mrSEhdNjvsF8EtQ61IjoEJpi3GeQlMKLoIhWJmELgBmoQ2L9FHZx6iAQzjOgykh0S90tXB/t1+OFPp3NO/e33/fd4nMb3d9iL7+n5+/D9bqV6vV4PAACgJRYlPaBdjh4/E59+Npb0DAAAcm5x0gMW0lRtOvZ+/mN8tOebqNWmY9d7Lyc9CQCAnMtlYJ86PRG794/FyKFjzWsrVyyNTRvXJbgKAIAiyFVgHzg... | [
"120°",
"150°",
"90°",
"45°"
] | null | 3 |
math | grade-6 | identify-equivalent-expressions-using-strip-models | false | true | This model represents the expression a+7. Which expression is equivalent to a+7? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAA+CAYAAAARUWyzAAAFcElEQVR4nO3dX2hdBwHH8d/9k/9/miZrtdWtdnXtRkFf6vyDqTiUyfChaEFhz+IU+uDLBBEZin8oCIJUX0XfFLX6oAhDba2TyUQpltIU2sK62a5dsjTJzf97fGjXKmNKy+k9uevn85Tcm8APQnK/OefkpFYURZEk7ctTaf3yq1k9++cUrZnAW1Vz576MPn385vtzh/dn9fwLFS4CNpra4Ob07p7MwKe+mfqWXVXPAbpMrSiKon3h+Vw7cjAjD0+mPrgptd6hqnfBXTP... | [
"8a",
"7a",
"2a+6",
"7+a"
] | null | 3 |
math | calculus | describe-linear-and-exponential-growth-and-decay | false | true | How does g(x) change over the interval from x=4 to x=6? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAByfklEQVR4nO3deWAU9f0+8Gf2yE1ISCDBaAIIRIMJh4KCQUAuAaUGtVBrra1H1XpRiz/9Wq1Yj7QFQeRSEQEtIpRDBQNFiRwBCcQkkICIAQIBciy5drPH7DG/P9JNCWcW5sPsJs/rH80m++TNzO7ss5/M7kqKoiggIiIiIiJV6LQegIiIiIioNWHBJiIiIiJSEQs2EREREZGKWLCJqMW+//573HLLLXA6nef8/sqVK3HXXXdd4amIiIj8Cws2EbWI2+3GQw89hAULFsB... | [
"g(x) decreases by 2",
"g(x) increases by 100%",
"g(x) increases by 2",
"g(x) increases by 3"
] | null | 2 |
math | algebra-1 | describe-linear-and-exponential-growth-and-decay | false | true | How does f(t) change over the interval from t=7 to t=10? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB1LUlEQVR4nO3de0BUdf4//ucw3EEFQcEoMLNMFBBJXRRTsy03tLyUt4+ZaW13s10r2rbLtqV9vm3rd7t92rb9dPl8+/z8VJulIioq3mC9oaLgJUREULmM3GZgZs6cy+8Pd/iIojJ63h4Gno9/ioF58vKcmTPPeXNmxqRpmgYiIiIiItKFj9EDEBERERF1JizYREREREQ6YsEmIiIiItIRCzYRtbJp0yb07dsX6enpAIBJkyZhxYoVAIAzZ85g3bp1+Mc//oFJkyYZOSY... | [
"f(t) increases by 100%",
"f(t) increases by 3",
"f(t) increases by 300%",
"f(t) decreases by 3"
] | null | 1 |
math | grade-2 | identify-repeated-addition-in-arrays-sums-to-25 | false | true | Which addition statement describes the array? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAB+CAYAAAAeCWbfAAANyUlEQVR4nO3dMWwbR8LF8acP1kHBWeDahQNZBpZxCgWXQvTFKQ9kUgY4i52qg1n4asnFtSZVJi4suonjRnQOaZJCy7gREEdawSkS2BEXcALIRZw1ECtICpMOHfBgFvoK39KiRMVacbS71P1/jUKJM5wHuHiYDGeHSqXSpoAEKxaLcS8BAABgz/4v7gUAAAAAh8mR4D/YJUTSzM3Nxb0EAACA0NjBBgAAAAyiYAMAAAAGUbABAAAAgyjYAAAAgEEUbAAAAMAgCjYAAAB... | [
"5+5+5+5",
"3+3",
"4+4"
] | null | 1 |
math | grade-8 | apply-multiplication-and-division-rules | false | true | The number line shows two unknown numbers, t and u. Is tu positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAH90lEQVR4nO3dXUxU+R3G8efMMMPsAJVZgzUajMZdNcRIUUCw7mqaNKnr6hbXzdY0saZNbTQ22tjUi7VNE11bL2p6oWnMumnWboimG9zqRW96M3AzgIg0VBC3wuoqqGtgKzjM6+nFvAgFYRtn5jAz388FnDlg8iQzx3nmz++cY5imaQrIYo2NjTIMQ7t27bI6CjKE5xwAMJcVWB0AeFF37961OgIyjOccADCXfe2CHQqF1NHRodbWVi1YsICVI2AOiD76m8KDHys64pU... | [
"negative",
"positive"
] | null | 1 |
math | calculus | determine-continuity-using-graphs | false | true | Is f(x) continuous at x= – 1? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB3aklEQVR4nO3deXRU550m/qf2KqkklZBAAmEJs9oCicVgdhsHL8R4A8eD7dNJnJNOjzNJJ+kz0zN9Mj05090en8x0p/uXdJJOZybtZbp70nEH2w1YEGx2YTYZBBIGZAFaEFpKqn25S937+6MoWQIJquC+lEp6Puf4YJWqvvrq3qpbT71673tNuq7rICIiIiIiQ5iz3QARERER0XjCgE1EREREZCAGbCIiIiIiAzFgE9Ewe/bswYwZM7Bx40YAwNNPP4133313xPsqioI... | [
"yes",
"no"
] | null | 1 |
science | grade-2 | identify-solids-and-liquids | true | false | Select the solid. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAAr6ElEQVR4nO19W4wj13nmV8Uiiyze2WR3T/d0jzQz0owkW5fIUhQnjrBxDO9i4XUSJQZ2AwfBQrsIkADJk4H1JlnsSwAniJHkwckCsQP7QcHCBnY3xu4aG0SRY8uKYyu6+jKSZiT1TF/IJpt3si6sOvvA/s8cVhfJYjd7unq6PoDD6WJdTp366j//7fxH+l6TsStJIB1BiBB3FG0buNYFtk0grwA/kxtul0NChjgppCPAleTw/x379nY5JGSIkwTxz2K3t8kn05Q... | 2 |
science | grade-5 | compare-properties-of-objects | false | true | Which property do these four objects have in common? Select the best answer. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADQCAYAAAByQhWRAADrW0lEQVR4nOz9eZgl6VneCf/eN5az77lnZe1LVy/qlloICQlZAgls+MA2zJgZgz9jg43nwh6DjWw8GAMzfMzYLBcGg1hkYWMMHtkWMvsuoQW11N3qvaq61qyqzMo98+xLLO/7/fFGnDyZldVqSbVX3NcVebbIiDhxYrmf572f+xFaaw3Q7/dZWlqi2WwSBAEJEtxp2LZNsVhkenqadDp9S9eVHP8J7jYkx3+CBxnJ8Z/gQcbNOP6F1lr3ej0uXLjAgQMHSKfTOI5zkzc... | [
"translucent",
"soft",
"sticky"
] | null | 0 |
math | grade-2 | identify-halves | true | false |
Look at the colored part of each shape. Which shape shows one-half? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAXKElEQVR4nO2daXRU53nHf3c0q7aRRhvaVyQhIRnEjlkMNhhjQ7w7iRsnseMsddPj5jht057TJnGbtl/a0x47Tho7rpMmqQl4jW3ALLYBgwEJDGhDaEH7Plpn0Sy3H+7ckQSSEbMP0u+LNNt978z/fd7ted7nFURRFLsn4IoJRh1gF1ngFkIpQEwELI6EFDUI3VZRPD0S7NtaIBCsiQVlg0l6kKqGoiipNixw6zDqgPpx6JqAyyZQjNilFxbEvjWJiZC0BRhzgMI... | 2 |
math | grade-6 | rational-numbers-find-the-sign | false | true | The number line shows an unknown number, x. Is – x positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAlwAAAApCAYAAADgbPfrAAAGDUlEQVR4nO3dTUyTdwDH8d9TbKm8zNW3LE6RvRwcYSNGrOCMetmyxJisRg9ciEumicaL28GLyw5zJh40S6YHM3Yhip4wxpvxUlyytlgZphG3ZAHRuAVEp7yUUtpnh9oKYgUCD49P/X5O7UNDfuThgd/z//+f5zFM0zQFOFhLS4sMw1BDQ4PdUbBA2OcAnGaR3QGAubp3757dEbDA2OcAnGbGhSuZTCoajSocDmvlypWcWQJAgeiJmzr297juxk21PU7rk3JDNeUuHf1... | [
"positive",
"negative"
] | null | 1 |
science | grade-6 | match-chemical-formulas-to-ball-and-stick-models | false | true | Select the chemical formula for this molecule. | "iVBORw0KGgoAAAANSUhEUgAAAU4AAACbCAYAAAAN13JBAAA36UlEQVR4nO2de5gcVZ33v1XVPd3Tc5/MZJLJlVwggSRAeASCgg8BgiuK7gMKQXkexFdFsxpwH1lYfVlw1cVdFsEYQOVVUBCXy4IusO+LEBURWG4CCYFEQq4kmUwyl+6Zvtc57x9Vp86lqnq6k+655XzydLq77lP9q2/9LuecMiilFBqNRqMpG3OsD0Cj0WgmGlo4NRqNpkK0cGo0Gk2FaOHUaDSaCtHCqdFoNBWihVOj0WgqRAunRqPRVIgWTo1Go6kQLZwajUZTIVo... | [
"H2O",
"H2O2",
"HON",
"O"
] | null | 0 |
math | pre-k | circles-squares-and-triangles | true | false | Which shape is a circle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJgAAACaCAYAAABVCoEqAAANdklEQVR4nO3deXCU5R0H8O+7V7LZzbWbQA4CJCGE23CE2yp4cwgodhCPqVqEKSgF2nHqxfTQsSKeVKWdqnhgbbAcMkVFxQMihCsIBBKQJIQkS44NSXaz2fPtHyFOtAh5z+fd3d9nhmEYeH/PL7zfPPvmeS+O53ne4QNOdwDtQSDAgxDRDBwQrwfy4oC+JoBzeHm+pI11WyQSTUgADKc6uv6QbgLyLV3pI0Ss9iBQ7gbqfUBFB6BrC3T9BYWLyCFe35UlAHAFAV2... | 0 |
math | grade-7 | identify-reflections-rotations-and-translations | false | true | Look at this shape: Which image shows a translation? | "iVBORw0KGgoAAAANSUhEUgAABbAAAAC3CAYAAADD5XikAAAYBUlEQVR4nO3dbYxV9b0v8B84PI4QRIrMRuAkVLC3PMlutLWirVorx/be26S22uRWk8YX1d7S1Jv0gZPU5va+aHrPC1/0Ib5o04eU0BxBS0NjJT1GvFaiCxkM3sNEaxl0DdaCRBCRx/ti7mwYZwZn9qy11157fz4JYe9h89u/bv9Dhy9rvntCRJwNAAAgE2fP+vIaAACyMrHoBQAAAAAAYDgCbAAAAAAAmpIAGwAAAACApiTABgAAAACgKQmwAQAAAABoSgJsAAAAAAC... | [
"A",
"C",
"B"
] | null | 2 |
math | grade-3 | interpret-line-graphs | false | true | In a report about the history of the Olympics, Luke reported the number of Olympic medals won by several countries, including Finland. In which year on the graph did Finland win 2 medals? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFtCAYAAAA9PB1eAABSIklEQVR4nO3deXiU5b3/8fdM9n0nC0kgIQkhLGHfd1BEBEUQoW7UHnu0tmpr9VS7nNaq9bTHLrYqx6OFthatKCAiCgIBIWyCCUsIErIBCWRPJiSTbTK/PziZH0giQSczSfi8rsvrIs88M/OdmzF85p77ez8Gq9VqRURERERE7MLo7AJERERERHoTV2cXIP/f+fPn2bx5MydOnKCmpgZ3d3diYmKYPHkyY8eOxWAw2M596qmnqKys5KGHHmL48OHOK/oSq1atYu/evcy... | [
"1992",
"2004",
"1996",
"2000"
] | null | 1 |
math | kindergarten | count-money-pennies-and-nickels | false | true | How much money is there? | "iVBORw0KGgoAAAANSUhEUgAAAUAAAACDCAYAAAD8m8IEAACVmklEQVR4nOz9d3hc93XnAX9unV4x6L0Shb0XkVRvli3bcndix3Ecp22SdbIp62yy76a8ebKpfjebxHGPe5PVuyix9wqSIEACIDoGwAymz+3vH0OMpViyVW15wa8ePIRYgHvu9+Lc8/2dJjiO43Ad13Ed17EMIf6sL+A6ruM6ruNnhesO8Dqu4zqWLa47wOu4jutYtrjuAK/jOq5j2UJ+s7+BY1sU8nlymTTZTJrU4iL5xQVyRQ0RCESiBMIV+H0+3D4foVAYRVURBAE... | [
"13¢",
"11¢",
"18¢"
] | null | 0 |
math | grade-2 | match-analog-clocks-and-times | false | true | What time does the clock show? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEJCAYAAADhBFPCAABS4klEQVR4nO3deViU57k/8O+wDaAwg7K7zIALggujxjWRJWqMMSrGpE2TNOBpkm6xwTZpz+8kKdjtnCanFZu0TZrkSPY2jRFjTKLGOOIWjOJgIosRGBRFBGQAgRnW3x/IhGWWdzZm4fu5Lq4MM8/7vneQubjfZ+7nfkS9vb29ICIiIiIij+Dl7ACIiIiIiMh+mOATEREREXkQJvhERERERB6ECT4RERERkQdhgk9ERERE5EF8nB0AOV9nRzc6dV3o0HWhQ9eNDl0XOnV... | [
"12:45",
"1:45"
] | null | 1 |
math | algebra-1 | surface-area-and-volume-changes-in-scale | false | true | Look at this cone: If the radius and height are halved, then which of the following statements about its volume will be true? | "iVBORw0KGgoAAAANSUhEUgAAAIwAAACSCAYAAACXHCLVAAAxXUlEQVR4nO2deZxU1Zn3v+ecW9UbS6OC0PQGqOyLBoyIIiAgGAmLC+6YRc04RvNOYsiiJkYnavKJE80YzWhG42hiEicaE01igriwqICC4I4KssQVmx26q+55/zjLPdXdMCzdXdXKw6eo7datW/f++vk9+xFaa80BOSB7KDLfB3BA2pd8qgDz4KLH6Td9dL4Po12L+LRQ0u+X/I0zhk8CoHbCcN5+bFGej6h9yn5pmLfffpuRI0dSVFTE5Zdf3lLH1Cryx7t+7x9vePW... | [
"The new volume will be 27 times the old volume.",
"The new volume will be\n1\n16\nof the old volume.",
"The new volume will be\n1\n8\nof the old volume.",
"The new volume will be\n1\n2\nof the old volume."
] | null | 2 |
math | algebra-1 | perimeter-and-area-changes-in-scale | false | true | Look at this rectangle: If the height is halved, then which of the following statements about its area will be true? | "iVBORw0KGgoAAAANSUhEUgAAABgAAAAOCAYAAAA1+Nx+AAABSElEQVR4nL2UoYvCcBzF3+YFQYWBwtKKbc0VDQsGEZfsrulWTfsDVrUaBP8Co5Y1k00ULNYtmX9VHLp35RjneScHt91r7wvf9wnfx1ciSeQoOc/wFDCfz2EYBkqlEjRNw3Q6zY5Ako7jMAgCXi4Xnk4nqqrKIAiYhfDdsN/v0/f9H5eq1So9z6Ou61QUhaPRiKvVis1mk+VymZ1Oh0KIZ0Acx9xsNqxUKlyv1y8Btm0ziiJGUcRarcZWq8XdbkchBE3T5GQyeQYAIAA... | [
"The new area will be 2 times the old area.",
"The new area will be\n1\n2\nof the old area.",
"The new area will be 4 times the old area.",
"The new area will be 3 times the old area."
] | null | 1 |
math | grade-7 | rational-numbers-find-the-sign | false | true | The number line shows an unknown number, b. Is b positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAlwAAAApCAYAAADgbPfrAAAGJklEQVR4nO3dYWgTdxzG8Sdpc01bu61ura2i6xh1tQqi1tiKMGGvRpGt4mDuhTgYDkUQthfC3uyVgmz4Sl8IvnKsCIO4IQpjgy26sSZt1c7OdiubWWVaK13VteaS2GQvumSrXZPU5nK9+v28y/VannKhfXL/3925kslkUoCDtbe3y+VyaefOnXZHQYFwzAE4TbHdAYC5unHjht0RUGAccwBOk3Phisfj6u7uVjAYVHV1NZ8sAQDIs4F+U13BMd27OyHTTGhJjUf1DaV... | [
"positive",
"negative"
] | null | 0 |
math | grade-3 | parallel-sides-in-quadrilaterals | false | true | How many pairs of opposite sides are parallel? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAArF0lEQVR4nO3de3TcdZ3/8ddcMplMMplcm7Zpm7ZJmiaFlgIWKBcVdPXIb3VXf+jCeuPi5efuuiuKKKIiKOD9t3jW3yoILK6wR3R31cXLKqhcClRKS6G5NGmbNE3bNPeZZDKZTGZ+fxQ/SV0aOs3MfGYmz8df73fOtzOvnkPOeXWYz/frSCQSCQEAAABICaftAAAAAEA+oWADAAAAKUTBBgAAAFKIgg0AAACkEAUbAAAASCEKNgAAAJBCFGwAAAAghdy2AyD9BiYP6rt... | [
"2 pairs",
"1 pair",
"no pairs"
] | null | 1 |
math | kindergarten | one-less-with-pictures-up-to-10 | true | true | Count the triangles in this group. Which group has one less than the group you counted? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABeCAYAAAAZpWPpAAAE20lEQVR4nO3du25UVxiG4U36pKfj0nwhkTvTUKaM04CUVLmD0EEkS0SAXeJ0BBekCEUUicEzKRAyXuPTzPxr7XV4ns6nPVt/9RWv5Hur1Wo1AQAAIb6Z+wUAAKAnBjYAAAQysAEAIJCBDQAAgQxsAAAIZGADAEAgAxsAAAIZ2AAAEMjABgCAQMMM7P2jw+n0w9u5X2M47g4AjGaIgf3s3fF08OLxtPfbwXS+PJ/7dYbh7gDAiLof2B/PF9Pe04NpuVpOz89Opkcvf57... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA04AAAB2CAYAAAD/YcPcAAAIR0lEQVR4nO3dPY9dVxXH4T3x2EUg0CAQiiiBmoa0VHR8B/M9iGmwkQgVlHYKjIAGGtImnS1lIkPsSZV46CBjZBfEb1Hm7VJcW7HXjb09nnvO2Xud52lGebtztKa5/9yfNRullEUBAADWYrFYlFt7pew8LOXeYSkH3m13aXOjlNdOlfL9V0v5zplSNorhBAAAa3Pri0X54O7UT8E6vfGNUjanfggAAMjk5sPl1++eKeWHX1t+akF/7h2W8vGDUnb3SvnkYSmvTP1... | 0 |
math | grade-4 | acute-right-obtuse-and-straight-angles | false | true | Is this angle acute, right, obtuse, or straight? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABICAYAAADMKoJvAAAK9klEQVR4nO3deXRU5R3G8Wcmy0z2BRIBA9gggqRCFBUIyiKSU06tBFzwIKBY2dSWFBWXAgZP8dADxSClSKwYlGrFIsGeWhoqYZHgBgI2lkpAIvuWZTJJZpJZ+gchJRIohpncLN/PP5Pz3kneZ5J/nvM7b+41eb1erwAAAAD4hNnoAAAAAEBrQsEGAAAAfIiCDQAAAPgQBRsAAADwocsu2HZnqXILVipj3SjlFmT7MRIAAADQcgVe6qLdWar8wnXKL8xRfmFO3brX61V... | [
"straight",
"acute",
"right",
"obtuse"
] | null | 1 |
math | grade-7 | classify-rational-numbers-using-a-diagram | false | true | Use the diagram to help you answer the question below. Which of the following is an integer but not a whole number? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEuCAYAAAC08GWcAACIlklEQVR4nOzdd3hTZfvA8W920r3Lhpayt0wFBERBERUEHODErbgnr3v/3Pr6urcgOEABRUVQ2XvvPcvoHkmzk/P747QBZAvN6v25rl5J04wnaXvOfe5zP/ejURRFQYgaJM/uZ1+Fj2KnnwqPgt3rx+FVsHsU7F5FvV75feB61e0e/1FuU7B61H+jWL0Gs16DWafBrAdL4PrBy3/eZqm8LdGkJcmkIdmkJdmsJcmkJdmkXiYYNSH+1IQQQghxsjQSYItoUexUA+d9Nh/... | [
"–87.4",
"–109",
"184",
"67"
] | null | 1 |
math | grade-4 | elapsed-time | true | true | Look at this clock:What time will it be in 1 hour and 44 minutes? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADICAYAAADSmpa3AABRC0lEQVR4nO3de3zT9dn4/1fSNElzaAulTcuhBWmLG4cCysEJeEIRFecEBHWb3J72vQUUd1In7t5ucOLubQrKdv9uweGcAgqeUMGBqIATRDmLQguUcmjTUmiaT9okbZPfHx+aNk16TpsWrufjwaPN+3O6UvLH1U+vz3Vp/H6/H9ExqkvAkwuePPCeBp8DahTwKXVf639fUwYaHcQkgNYCMRb1a+33GjPEWCGmB+h7g+ES0A8EXa9ov1MhhBBCCHGeRhLs9qoGz1E1iXa... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA7gAAADgCAYAAAApDMpcAABsX0lEQVR4nO3deXiTVfrw8W/SNk2ztIXSpmVpQdqCshRQFpXFBUVU1BEQ3EZ+os6MoOJs6oiODrjNooLizDuCg4MKCi4jKjggKqBsDrsItEApSxcoNM3SNG2T94+nTZsm3ZOmy/25Lq4259nuxJx6n+c5iwpwI4QQQgghhAgIt9tNnhOy7GCpgHLJtoUImnAVGMMgTQcmDaiQBq4QQgghhBABk1fqZntxqKMQovMZGQ3hoQ5CCCGEEEKIjiTTrvxM0kA/vfJ0SQg... | 0 |
math | grade-1 | even-or-odd | false | true | Is the number of diamonds even or odd? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAClCAYAAABm8IozAAANB0lEQVR4nO3dMWyTd/7H8W9uggU7Y1ER1o0w2BHTbTkJ9aYqZAhbSSIda6W0w41xOt1y4PmEVCM2eoORkK5ISGQ6JhQjNStYQmLF3MJt/g+55KB/Wr4Jv8ePa16vDRE7j96LP3Ie+7cwmUwmAQAAFPG7ui8AAADmiYENAAAFGdgAAFCQgQ0AAAUZ2AAAUJCBDQAABRnYAABQkIENAAAFGdgAAFCQgQ0AAAUZ2AAAUJCBDQAABRnYAABQkIENAAAFGdgAAFCQgQ0AAAU... | [
"odd",
"even"
] | null | 0 |
math | grade-2 | which-table-is-correct | true | true | Karen saw the following vegetables on sale at the farmers' market:She wanted to see if there were enough vegetables to make Grandma's favorite stew, so she made a table of the vegetables there. Which is her table? | "iVBORw0KGgoAAAANSUhEUgAAAYQAAAEDCAYAAAA1CHOzAACGO0lEQVR4nOz9ebhlZ1ng/X/XPO7pzKeG1JiQkJEQgpUIhCQICALSgBKkm7edfR2wW3/a4iuI2G2LXip2KwoqzSBNa6tMBhPBMCWQOakhqTlVZz5nz3vN4++PXXUykDlVdWp4PteVi1O79t5nPw+1173u51n3vaQPfOADJYIgCMI5TwV4//vfv9afQxAEQVhj8lp/AEEQBOH0IAKCIAiCAIiAIAiCIBwjAoIgCIIAiIAgCIIgHCMCgiAIggCIgHDOK8uSPEs5MnOIIzO... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAu4AAAEDCAYAAABqL4ELAADlb0lEQVR4nOz9d5hlV3nnfX93jidVrq7qLAkJtQIChFsySEjCgAUGM2SM7Rkbp8FjmNe+zIP9mmCY8TyMB4w9NjbYg4mDMxlLBgtjJFBohQ5Sx1J3ha5w8tk5Pn+c7pIEEiKo1UHrc126VLVr71N7r6o6/Tv3ufda0jvf+c4SQRAE4Snvne985+k+BUEQBOF7UAHe8Y53nO7zEARBEE4zEdwFQRDObPLpPgFBEARBEARBEB6fCO6CIAiCIAiCcBYQwV0QBEEQBEE... | 1 |
math | grade-1 | addition-sentences-up-to-10-what-does-the-model-show | false | true | Which addition sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABUCAYAAAC4PkCPAAAQR0lEQVR4nO3dS2wd12HG8W9m7ov38lK0+LBImqZsy2IsWBJSKXBl1HKBIvLCMmw0LpyVkQaJUe/iTQEXTZO0RbNp0a6MFi36QA2kXThAkKBGskiL2pW7sJ24ilpbkmVZD+phUi/yvubOo4vhlSiJkkxq5sxw+P8BhiX63jnnM0Dw47lnzlhhGIYCAAAAEAs77QkAAAAAeULBBgAAAGJEwQYAAABiRMEGAAAAYkTBBgAAAGJEwQYAAABiRMEGAAAAYkTBBgAAAGJEwQY... | [
"3+3=6",
"3+5=8"
] | null | 0 |
math | grade-6 | identify-complementary-supplementary-vertical-adjacent-and-congruent-angles | false | true | Which angle is vertical to \angle{5}? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADvCAYAAADIM6M5AAAswklEQVR4nO3df1iUdb7/8RcCG6y5zIndtWsuV34sc3HCTb0OcqKzejFkqSS5suoaaYrtSaXWGi1z6NQJzpU5aCVWBtqWWBTa6gVtGPbDdTx6Xbpn9OSPS85y4eHHLntfeX0vbJBo2Bjg+4erJysVZODmx/PxjzFzz32/7v568eYznzuoq6urS8OE1+uVxWIxOwYAAACGsBFmB+hPWVlZKi8vNzsGAAAAhrBhVbCjo6OVkZGh559/3uwoAAAAGKKGVcH+7LPPJEmrV69... | [
"\\angle{4}",
"\\angle{1}",
"\\angle{3}",
"\\angle{2}"
] | null | 3 |
math | grade-8 | identify-congruent-figures | false | true | Are these shapes congruent? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD7CAYAAABQdOO0AABPIklEQVR4nO3deViU1fsG8HuGbWRHEdxQQWRTQBNxK9dyKXBFo13Svmpprqm/MpdWMzPNUlMx1zIBFbfCpdwVcoMxQFZFVFAIEVEEZub3BzI64sIyM+8s9+e6vMrhzPvew+Xow5lzniNSKBQKEBERERGRWoiFDkBEREREZEhYYBMRERERqRELbCIiIiIiNWKBTUREREphYWGws7Or8viBAwcgEomwYsUKAVIR6RcW2ERERKQklUphZWWFrKwslcc/+eQTODo6wtfXV6B... | [
"no",
"yes"
] | null | 0 |
science | grade-5 | use-evidence-to-classify-mammals-birds-fish-reptiles-and-amphibians | true | false | Amphibians are a group of animals with similar traits. The following traits can be used to identify amphibians: They spend part of their lives in water and part on land.
They have moist skin.
They make eggs with no shells. Observe the animals and read the descriptions. Select the one animal that has all of the amphibia... | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAp8AAACmCAYAAACcAuREAAEAAElEQVR4nOz9d9RsWX7X979PTnUqVz053efm2DlNd0+WRhpJjNAoIslCJIEJxmBM+vGzjQGRBRYIgRDCIAEKKKAZafJopnumc9/uvn3zk0PlXCen3x9ty1x+LC+Q0G2bqdda9cd5Vp2qXU9996pP7Tp7b+HlUZadscCWmJmZmZmZmZmZmfkdMUnglgPCOM6yWfCcmZmZmZmZmZn5nTZJQMiyLHu3GzIzMzMzMzMzM/O1Qf73D8plFVPXIRMp5PP0Wg3SDFY31lE... | 1 |
math | kindergarten | rectangles | true | false | Which shape is a rectangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAFBElEQVR4nO3cz26bVRCG8XH+dFEaWBXEBQCX0FvoHTeLIIUFXbQSUpGQGtpFVyXIDph8tuPY+XxYGKOAktQefz5nZs7zWzVKF7N4lBMlb9tLKaXzmcj7iUjTitwkAbZ20BM52hf55rHIV49EeufXKb26LH0WInv2ucjBu8nyg68fiXz32bJCYFtNK3I2FvltJvLrRGTv8mb5CSJDl472l02JiIxakb321ieALq2amieRvbKnoBaEhiwIDVkQGrIgNGRBaMiC0JA... | 1 |
science | grade-4 | 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 | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAADWCAYAAAAD8D2GAAAU3UlEQVR4nO3daWwc52HG8f/M7JK7vHSROijJ1GnDt2THkuMrh68Aie2kgePEMfIhDaogiQO7TdNEuZwCkYW0cVoXLmoXiIs4DhqkQE6jTeyithTHkiUnto7Yom0qlkRdFA/x3Gvm7YdZiqS0EpficnZm9/l9EcQlF7Oc3Yfv+8zxWsYYczQDbw3DgAs5g4hIScQsaHRgdR0sqAHraNqYl/vLvVkiUunWN0HszWH/P4tq4KJ6P41EREphwIV9Q3AkA+3DYPfn/Ac... | 2 |
math | grade-3 | match-mixed-numbers-to-models | false | true | Which mixed number is shown? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAAoeUlEQVR4nO3dZ3AcaX6Y8acnYAIGOQNEJAECDGBechO5t1Grvag9n2S5LFl1CudylcuWS5ZtfbG/2LJdkktVkqoUfQonW9bVBd3tXtgLu1wuNzCDCSRBBAJEnkEYTA7tDz0AESYHoAH8f1W7RRKDnh48NT2N7n7fVlRVVdlmQsEowUCEoD9CwB8mEIhgNhsoLimirNKy1asnkEbbgTTSP2mkf9JICBGPaatXIJmZCS/jj9w4p3w4p7zMTnpxTvsIBiJJv89iM1JcUoS... | [
"4 3/5",
"4 3/4",
"4 2/4",
"5 3/5"
] | null | 1 |
math | grade-6 | interpret-double-bar-graphs | false | true | An economist tracked the amount of per-capita aid sent from the U.S. to various countries during the 1900s. In 1985, which country received more aid per capita, Libya or Algeria? | "iVBORw0KGgoAAAANSUhEUgAAAZ0AAAGYCAYAAACZEj8RAABLlUlEQVR4nO3deVxUZf//8dcAsoukomjauEcqrpmCWmJpaVlmZFqmkaallq2Yxe8uSyrT0jTNNPVuM7qzoCzNJBfE0AzczYTIzAVFcABFxRn4/eGXuSX3buYMDO/n49Ej52zX58wM857rOmfOMZWUlJQgIiJiADdnFyAiIlWHQkdERAxT6UPHZrMxatQonn322Qsu88knnzBq1ChSU1MNrOzCLqfm/9W//vUvRo0axbFjxxzWhrP9+uuvjBo1innz5pXbNg8fPkxsbCx... | [
"Libya",
"Algeria"
] | null | 1 |
math | calculus | describe-linear-and-exponential-growth-and-decay | false | true | How does g(x) change over the interval from x=3 to x=6? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAByTUlEQVR4nO39e1wUd54v/r+a7uYOgoCAGPBOAoLRRA0qEcRcJreNZmbM5DEzm4yay879sWdn57c7Zx5nZ3OyeXx3LjvZJDtnzs54STKTEyfqRA06JhpBnIiioqBJCFEuKpcGuulLdVdXV/3+aJpIvNCt9aG74fX8xwdN15u3Vd1V735RVBk0TdNARERERES6iAl3A0RERERE4wkHbCIiIiIiHXHAJiIiIiLSEQdsIgrahx9+iLvuugter/eq33/77bfx8MMPj3FXRER... | [
"g(x) increases by a factor of 6",
"g(x) increases by 200%",
"g(x) increases by 6",
"g(x) increases by 300%"
] | null | 2 |
math | grade-5 | adjust-a-budget | false | true | This table shows Dana's December budget. What could Dana do to balance her budget? | "iVBORw0KGgoAAAANSUhEUgAAAZ4AAACeCAYAAAACC2y7AABAKUlEQVR4nO3deVxUVf/A8c8MO4gbgmmkDCSLiEgqCG4p9qTmllpmmVqZWuZuLrmkiFv5PO7mL0l7NB/NLCvNEtPEBRcQDcUdSU3NZN8GZmDu7w9kdBxk7iCbdt6vF6+X3Hvuud97Oed87z33zqjg8zQJQRAEQagkyqoOQBAEQfhnEYlHEARBqFQi8QiCIAiVSiQeQRAEoVKJxCMIgiBUKpF4BEEQhEolEo8gCIJQqUTiEQRBECqVSDxCufn+Xw5oh9Wu6jCqvcVBdiQ... | [
"shovel snow to earn an extra $20",
"spend $5 more on a new chess set",
"spend only $65 on presents for her family",
"increase income from tutoring to $50"
] | null | 0 |
math | grade-2 | match-digital-clocks-and-times | true | false | What time does the clock show? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAN8AAAA2CAYAAABHskxmAAAJNUlEQVR4nO3ce0hTfx8H8PfZTM3NaeqaI2+Vz/OoFWhJvyIVLUWoflSUbNQfpoVRFoRGF5AgqbALholFdPtp3oruEpXYComiCxVdzVLsYjpNTG1m6vo8fyxHa2pa+pyn9nnBge277/d7Pkf33s75bkwgIqrvBF62A21GoJvAGBsGdgLgLAX+5QSo7AGh/jPR7Vaxy2LMtvylAOxetJvuqO2B/8hMyWSMDb02I/DcANR1ApXtgKS12/QAB4+x4eUsNeUMAD4aAYn... | 2 |
math | algebra-1 | interpret-a-scatter-plot | false | true | Does this scatter plot show a positive trend, a negative trend, or no trend? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFhCAYAAABK/t0lAAAiXklEQVR4nO3df5TU5X0v8M8iymJUZrFEFmwZWRUi8TBmSeKPG1mamAu1i5h7oqb2RLQaYk+baGwT2z+STaIJ7WkridGIzYmY2IRrraLmKDncylLiBSzbLNdgiBUcVJbVJO4oCBsizP3DuJHArsvOd+c7M/t6neM5zPeZneeNHs+895lnvk9dsVgsBgAAkIhRaQcAAIBaomADAECCFGwAAEiQgg0AAAlSsAEAIEEKNgAAJEjBBgCABJWtYPf29kZvb2+5pgMAgFSUrWB... | [
"negative trend",
"no trend",
"positive trend"
] | null | 1 |
math | algebra-1 | compare-linear-functions-tables-graphs-and-equations | false | true | Function A and Function B are linear functions. Which statement is true? | "iVBORw0KGgoAAAANSUhEUgAAAjcAAAGlCAYAAAAGbtd7AABW50lEQVR4nO3de3yT9dk/8E+SJj0ktIVCS+m5YFHkUBjSohykCHhi88BBRETdwPnAPEzdM7eJk2dz6nB4Qv2pIB6YuA5F8VF0T5GJYul0worSoqSBltL0QEOT5pzcvz9YMkKhSbnv5E7Sz/v18sWrybff+0q88u2V+77yjUIQBAFEREREcUIpdwBEREREUmJxQ0RERHGFxQ0RERHFFRY3FFHPPvssFArFWf+75ppr5A4xQGFhIRQKBbZu3RrxY8+YMcP/vLz33nsRPz4... | [
"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 | 1 |
science | grade-5 | use-data-to-describe-climates | false | true | Which statement best describes the climate of Cairo? Hint: Summers in the Northern Hemisphere occur in June, July, and August. Winters in the Northern Hemisphere occur in December, January, and February. Cairo, Egypt, is a city in Africa. It is located in the Northern Hemisphere. It has a dry arid climate. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAALOCAYAAACTXGSDAADwA0lEQVR4nOzdd3hU55n38e+Meu8FIQkQCBUQQqIIiV6NTS8uxCTGdry2E7/LZp3EXsdJdp3EKV47iUucOJuAW1ywwQaBwKaJLgRICIE6Qo2ignqbdt4/hhkkI4wwM5oB35/r4kJz5sycW9P0m+c8RaUoioIQQgghhBDCItS2LkAIIYQQQog7iQTs20BmZiYqlQqVSkVycrKtyxHfQuvXr0elUjF27FiL3F9nZyd/+MMfGDduHN7e3ri4uDBixAiee+45GhoabFpbfwU... | [
"Winters have lower temperatures and more precipitation than summers.",
"On average the winter months are colder and drier than the summer months."
] | null | 0 |
math | grade-2 | purchases-do-you-have-enough-money-up-to-5-dollars | false | true |
A plastic watch costs 4 dollars and 83 cents. Do you have enough money to buy it? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAHKCAYAAAB2eD/YAAEAAElEQVR4nOz9e5wkVX3/jz+XazUs7ClE6OK6R1Cp8QLdgjKtAbcRNY2XZMYYnYEoOxD8fGcf8bKTiNkhRp1Vk8zEaJh4CYPXHa8zIJcWFHtBpUcT7CYmbomKZ4mXakWtAwJdLJf6/XGqqrtnZ3ZnYZUNv3o9HjPdferUuZ+q13mf9/t9VkVRFJEhQ4YMGTJkyJAhQ4YnBfZ7oguQIUOGDBkyZMiQIUOGvYeM4GfIkCFDhgwZMmTI8CTCXif4+qEIeeO9FGq/Qz+Uaf9... | [
"yes",
"no"
] | null | 1 |
math | grade-6 | model-and-solve-equations-using-algebra-tiles | true | false | Which set of algebra tiles represents the equation x+8=10? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUkAAAB6CAYAAAAyE6EfAAAKxklEQVR4nO3db2wT9wHG8cdnh5R4DUFz0iQtRQvVSqg2FRiiqO2LDVWDtWKTwir6clIl+mLdq6gTUveWf6+QKpR10qaqmtZuEHhTJA800TUtNGqBwmiSbgosKSPEcXBw4pn88d1euA5Quh8+43POl+9HQuKO2I9zv+OJc3e+X+hkYtY5NT4nSQrJkRQSACxejhyFJEd6JhZR5PT43G21SEECWOxC+SYMSR+NzylSeO+4+kFLzzbWKLaEogSweCVnHPWMzWpg0pY... | 2 |
math | algebra-1 | surface-area-and-volume-changes-in-scale | false | true | Look at this cone: If the radius is halved, then which of the following statements about its volume will be true? | "iVBORw0KGgoAAAANSUhEUgAAAK0AAACdCAYAAADG1fjuAABL+UlEQVR4nO2deXwV1fn/3+ecufcmJJCwWhUC4oKCLHVDBalaq6244VZcQamKlVao+9La9tuq/XZRq+2v1dYvLlVrWxdUrFotriiKIriwqBBQQAFZhBCSO3N+f5xlziQBrQJJbJ7XK7n3znJm7tzPPPN51iO01po2aZNWJLK5T6BN2uQ/lTbQtkmrkzbQtkmrkwxoJ0+ezJAhQygtLaV379789re/ba7zapM22ahkQHvBBRfwrW99i2XLlnHbbbdx+eWX8+9//7u5zq1... | [
"The new volume will be\n1\n2\nof the old volume.",
"The new volume will be 16 times the old volume.",
"The new volume will be 9 times the old volume.",
"The new volume will be\n1\n4\nof the old volume."
] | null | 3 |
math | grade-2 | how-much-more-to-make-a-dollar | true | true | You have these coins: Which coins do you need to make a dollar? | "iVBORw0KGgoAAAANSUhEUgAAAUEAAACMCAYAAADiDxvvAACZ+0lEQVR4nOydd3hc5Zn2f6dMb5rRqPdqSa7CvVFs0wkQIBBIsiHJkt7Lpu2XZEkju2mkbLLZQGBJSOgBjCnGGPeCmyRbtmT1Lo1Gmt7POd8foxlsQhKK6bqvS5dlW3M07/ueec5T7ud+BE3TNGYxi1nM4h0K8Y1+A7OYxSxm8UZi1gjOYhazeEdj1gjOYhazeEdj1gjOYhazeEdDfqPfwCzenojFYqRSScLhMNFoBEmSiEajyJKMTq9HSSUxW6zYbDZEUcJgMLzRb/k... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA5kAAACMCAYAAAD2pW2TAADiDUlEQVR4nOydd3gchZn/P1N2tq92pVXvzZbcezfGhd4cIBBI7iCkX3K5tN+l3SUXcil3l3JJriS5QCAVEjqm2xTjgo2rbMuWrN7bStvb7Mz8/lhpMYQkGEy53Hyex4+MtLvaeTUW8533fb9fwTAMAxMTE5P/owiC8Ha/BRMTExMTExOTvyjEt/sNmJiYmJiYmJiYmJiYmPzlYIpMExMTExMTExMTExMTk3OGKTJNTExMTExMTExMTExMzhmmyDQxMTExMTExMTE... | 0 |
math | grade-5 | nets-of-three-dimensional-figures | true | true | Which net will make this figure? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAARhUlEQVR4nO2de1BUZ5qHH8QLUbBbRwWUsTtiTCBBUXNjnBHM5GLcqoGR2RijFkSLsCamus24syajZVtqopmJNNnElMlgS2V01ImAE2/rmNA4m8BOlCZq8G43RG0QlQYauSie/ePYZ+nIpe8Xsk+Vf/hx+pxXf5z3e9/f+fp8CD8i5s2bJ4SEhAgxMTGCwWDwdzhdgr8D8AVr1qwRwsLCBMDuj1qtFurr6/0dnh19WpDPP/9ciIqKkgQYMWaUkP3uG8LMl9OkMblcLmz... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUkAAAC6CAYAAAAj+7+rAAAbfElEQVR4nO3df3xT1d0H8E/4TemPlEF/QB/SoohUS1vQBzonTZxOwDkKVRHBV1t4Ic7pmjq3gcIoExHclNSBm3NA+zwDlQ1aFQQcWwJulke0CT8sgkADFtpaLLFNSxta8/wR77WVEtL8uvemn/frxasvYnruiW0+nJN7zveoADhBsuF0OlHrAE62AE0dQDt/OkRB1U8FRPQFxoQBsQMAFRiSslLb5sSHjVL3gogAYFIk0E/qTlBXn7W4vsYPAMYOcf2LRkTB09Q... | 0 |
math | algebra-1 | identify-linear-functions-from-graphs-and-equations | false | true | The graph shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAfwAAAH8CAYAAAA0Uh0TAABlMElEQVR4nO3deXhc9X0v/ves2jdLsiTLlrwLbOQNjPHGEhMgbIkdUpPchNCQtqQh3Ka/LmlvmttwgaY3W0OBQNJcIL25TUNjCF7kBWxsI4EXYcuWDF5kW4tlLSPNvpxlzvf3x3iEZFn2jDVfj0bzfj2PHmmO5rz10Tlzzudsc8YkhBAgIiKiCc2c7AKIiIhIPjZ8IiKiNMCGT0RElAbY8ImIiNIAGz4RDfMf//EfqK+vH3ys6zqefvppBAKBJFZFRGPFhk+URl599VW... | [
"nonlinear",
"linear"
] | 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 | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAADqCAYAAABwSPpQAAAgHElEQVR4nO3dd3hb5aHH8Z8kW5Y85G1nx05IGIWQsEIJhCwSmhCgaaGLcVllU3aAS5mlEMIqq4xSChTay4ZAdkjSAKEkZLICie3seMaWbW3p3D9eHQ1Lsi1bOjpH+n2ex0/qV/LRMffmm3Pes3SSJEkHXMB2G9DuBTwSiIgSIksHFBiAUblApRHQHXBK0pfWVK8WEaW78RYg60eb+GagETg0T9SIiCgR2r3Atk5gvwv4wQborR7xAmNDRIlWYBBtAYAOL6D3hrx... | 2 |
math | grade-5 | rotational-symmetry-amount-of-rotation | false | true | This image has rotational symmetry. What is the smallest fraction of a full turn you need to rotate the image for it to look the same? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAAbFElEQVR4nO3deZRU5ZnH8e9zq6q7q7t6Y1MUEUXCJi0C7pqASzTGJBpFEBFNRM1MxpOcWTPxZMLExJxkTuZkGSfG0ZkIiCDBaIyaGTdiXCONLYtKBBcQAYHeqnqtuveZPxBtm266qvuu3e/nHP+g+tb7PtatX713fS8YhmEYhmEYhmEYhmEYhmEYhmEYhmEYhmEYhmEYhmEYhmEYhmEYhmEYhmEYhmEYhhFaugSrcQ63NcyhqWEODQ2zuVVBgq7LMCshFOrP5Wui/LL... | [
"1\n7\n of a full turn",
"1\n3\n of a full turn",
"1\n4\n of a full turn",
"1\n2\n of a full turn"
] | null | 2 |
math | grade-2 | fractions-of-a-group | false | true | What fraction of the shapes are circles? | "iVBORw0KGgoAAAANSUhEUgAAAgYAAABKCAYAAADAOpyeAAALZklEQVR4nO3dvW/bdh7H8Y9JWQ+UZNqRHMsPtYqkcCoXSA9IcFuMw+GGLrdc5s65qcC1Y9OtXRu00/mPSOf2pkNyYzo0QCPEuASRa8dyLduhKVEPFqkbFLHXp+Qr8UmWP681FfPjOzXxJUWTU71erwciIiIiAErUCyAiIqLxwcGAiIiIXBwMiIiIyBWLegE0HKNsAgC6VhcAENP6/4R6KRvZmsYRO8mwkww70Xni62BgffEX2E/+4+cmPVHf2oD2wb+iXsZIGhULh98... | [
"10/11",
"4/7",
"5/10",
"5/6"
] | null | 1 |
math | grade-3 | compare-fractions-in-recipes | false | true | Does this recipe call for more mashed bananas or vegetable oil? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH6CAYAAAA9XzulAABxCUlEQVR4nO3deXzM1/7H8ddkJ0JEEEtVS1diSy5qjaWtqqU0VC1trihFqBb9qaVSSymtrVG0aMttq7SqRau2S1FbSJCGIgQhERGRpLLP/P5wTU2TEMxIxPv5eHjcO9/vmXM+83XvY95znO/5Gkwmk4n/MZlMGI1GsrOzzX/s7OxwdHTEwcEBe3t7DAYDIpI/k8lETk4O2dnZZGVlYTQacXBwMP+xs7PT/49ERESKMcO1gG00GsnJySErK4usrCwcHR0pUaKEgoDIHTK... | [
"vegetable oil",
"mashed bananas"
] | null | 1 |
math | algebra-2 | domain-and-range-of-radical-functions | false | true | What is the domain of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABkdElEQVR4nO3df3RU933n/9f80m8JCQkkEEiAMdjCCIONbTDYODi2aydOcJriZPPDXXfTdOMkzfds95vT02bbHH+92W3TnrqON82uGyf77fek8dZ2a7Ag2GAgIgYjg0ACgyxASIB+jH7OaH7cmbn3+4eQgvhhJHM/DAPPxzkce0ZzX3rr3pnPvOczn7njcRzHEQAAAABXeNNdAAAAAHA9ocEGAAAAXESDDQAAALiIBhvAOJWVldq1a9fY5ePHj2vatGlqa2tLY1UAAGQ... | [
"$\\{x \\mid x \\geq-4\\}$",
"$\\{x \\mid x \\leq-4\\}$",
"$\\{x \\mid x \\leq 4\\}$",
"$\\{x \\mid x \\geq 4\\}$"
] | null | 2 |
math | precalculus | outliers-in-scatter-plots | true | false | The two scatter plots below show the same data set. Choose the scatter plot in which the outlier is highlighted. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUYAAAFGCAYAAAAW1zbwAAAopklEQVR4nO3df1RUZ2I38O/MADOrMKOjgVUkTuOgRSWkokNQ57zRJrPZND3b5MSIu/kJya4liyHdk92kxz1Sm9ozq7WJv2p8d5fN25ZG464m3ZOs3ZNoaBFhDNUIqAHWiYhZQEfAq85P7vsHcgMXEMRnfgDfzzmJ3Gcu8zwDM1+ee5/n3kcjy7L8Rz/QeB24GgKCMoiIJpQ4DZCkA9InASkJgOaPPlmu7op2s4iIYkOOEYhruN6zMSMBmDe5JzWJiCaSqyHg7DX... | 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. Lacey had six air plants on her desk that were not growing. Once a week, she soaked the air plants in water. But she suspected that they needed more water. She wondered if spraying the air plants with water every da... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAEhCAYAAAAUBJnbAAEAAElEQVR4nOz9V5MkSZbfC/5U1Zjz8ODJMysri3ZV8+6Z6WlMDwEuyAICCIB7l9592Td8F3yCfdmXFVnsXRng7soFMANgWA/p6S7OskhyHty5MVXdB3PzsLA094jIrOqqEcEJCXF3I6rH1FSP/g/Ro+Lf/Jt/Y/nv9N/pv9N/p79D9G//7b/9Wup1AP7J0t7sgBDiyGf5WNV313Wx1mJtJnvz7/nveWUBGJF9t4K515Yprzv/T5IEIQRSytmxIg+L6s/JGDO7VkqJlHJ... | [
"the plants that were soaked in water and sprayed",
"the plants that were only soaked in water"
] | null | 0 |
math | pre-k | circles-squares-triangles-and-rectangles | true | false | Which shape is a circle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAF5ElEQVR4nO3dS28bVRiH8ce5dFFa2IECUruiLAKbqlJ3KSC+CxVCIPFNQAjyaYBk2SI2iEVbFi0SatgmbaQmcYaFdegk5GLPnMv7nvN/VnFsj09e/zJRfBlPuq7rdg7gz33Ym8JRh1KjW5nA9WV4/yq8cwUmO6+67sFu6WWpmrv7Jqw82Z+dWLsCH7wxU6jU2Pam8OglPD+Ax/uwtHs0O0PIVMyuL89MAbyYwtK0d4ZSMQumDjtYKrsU1UqCprIkaCpLgqayJGg... | 2 |
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 | [
"iVBORw0KGgoAAAANSUhEUgAAAOoAAADGCAYAAADc+hwDAAAPu0lEQVR4nO3d71NT+aHH8c85+XGSnEASwCy4rDD+5IcFqtcVq1fWuu7ddeaOs3M7t3fndqZ2H/RP6LM+6bP+DZ37tE/a253eznXX2u3WuqvooAKuKIirIJGAaAjhkOQk55w+OAVEEgQTzfnC5zXjjBASDgPvfM/3/JQsy7LiOjC6AKQMIG+BiCrMLQFVLmBPAHjLC0jxrGVdm6v0YhFRMYerAfe9BfuDBi+wT7UrJqLKShnAsAZM6sDIAiDP5e0HGCmRc1S57CY... | 0 |
math | calculus | describe-linear-and-exponential-growth-and-decay | false | true | How does f(x) change over the interval from x=6 to x=8? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAByV0lEQVR4nO3deXxb5Z0v/o+sxZZ3x3Zsx4kdTMA0wUsCCSQkJRQGmFKYJrQX2mkLlKW0LAHCzPT2dnpvO0ymd0oIe9m3O723U37DUggmDSSQ1CkJMbESO5DFSbzE8SJb1np0Fp3z+yPItZzNSs5jSfbn/U9eln2++uY80tHnPHp0ZDEMwwAREREREZkiLdENEBERERFNJAzYREREREQmYsAmIiIiIjIRAzYRxdiwYQNmzpyJa665BgBw7bXX4s033zzu36qqiosvvhi... | [
"f(x) increases by 100%",
"f(x) decreases by 2",
"f(x) increases by 2",
"f(x) increases by 1"
] | null | 2 |
math | grade-8 | apply-addition-subtraction-multiplication-and-division-rules | false | true | The number line shows an unknown number, a. Is – a 5 positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAGa0lEQVR4nO3dW2iU+R3G8e8kziQkcWNqPaMbelHdYBE1xkSkK71ZqFiJSBdvXFmLVJEKPQmFSinBYgsiRalu7Y20wauIdWm70APRXuQ0ugPBuLCsUanroUHdzXniTC/GjFpzcNlx3pnM9wMh877vXDzwzsXDn9/7f0PJZDKJJOWR5uZmQqEQO3bsCDqKssR7LimfzAo6gCR9Ubdu3Qo6grLMey4pn7x0wY7H40SjUdrb25k/f76rCFI+e/gfuHgSHt6GG12wYDksXA7... | [
"negative",
"positive"
] | null | 1 |
math | grade-2 | interpret-tally-charts | false | true | Jill sold cookies at a bake sale. This tally chart shows how many of each type of cookie she sold. Did Jill sell fewer heart cookies or snowman cookies? | "iVBORw0KGgoAAAANSUhEUgAAAYwAAADWCAYAAADCW7VvAABfJ0lEQVR4nO2dd3xUVdrHv/dOn/RCAgRIQq/SiyLNhgoriAp2Ed3Xsq6r68rquhbc18a669rA9bWwuvYGCrLCCogCAtKkg0BCgIT0SabP3HvfP24yyZA2KUAC5/v55JOZe88599yZ5PzueZ7zPEfiNpuGQCAQCAQNIJ/uDggEAoGgbSAEQyAQCAQRIQRDIBAIBBEhBEMgEAgEESEEQyAQCAQRIQRDIBAIBBEhBEMgEAgEESEEQ9AmiI/pxKEXHWyZW0B8TKfT3R2B4Kx... | [
"heart ",
"snowman "
] | null | 0 |
math | grade-2 | ordinal-numbers-up-to-10th | false | true | The first picture is a star. Which picture is eighth? first | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAinElEQVR4nO3de3RTZb438G/SJG3ThrT0Bm0prdyElikgckcRxlbkwHiBwgFnAEXF8V2KiL6+My4BZ+Z4nFHQ8cKooDAePFzUUahAEQtKpcBwK7RAEWjpDSiUJk3TpkmavH9smjZt0uayk337fdZi2cvO3ruu7/Pbz749j8xut9tBCCGEEEIIYYWc6x0ghBBCCCFETKiDTQghhBBCCIsC1sHWWexIy2vAyHwDdBZ6CoUQQgghhEiDTx3sb65asPq8qduO84GbVpQ32XB... | [
"moon",
"rocket",
"star"
] | null | 1 |
math | grade-2 | purchases-do-you-have-enough-money-up-to-1-dollar | false | true |
A barrette costs 38 cents. Do you have enough money to buy it?
| "iVBORw0KGgoAAAANSUhEUgAAAvgAAAC2CAYAAACs7/nWAACxA0lEQVR4nOzdd5gc1ZXw4V+Fzmlyzkk5Z5CEEEjkYGwDJjusw+7a2F68DrvrgA3e/VgnbGPWAYNtskFkEYSQRBDKg+IoTs7TEzt3Vd3vjx41GpBAgAgW930ePTDVVdX3VlXPnLp97ilFCCGQJEmSJEmSJOmkoH7YDZAkSZIkSZIk6cSRAb4kSZIkSZIknUROeIA/mBRUPjPMjNUjDCZl9o8kSZIkSZIkfZDeUYD/SGeSHzXE3jJwX9Nn0BSxqB8y+eyWyHtuoCRJkiR... | [
"yes",
"no"
] | null | 0 |
science | grade-2 | classify-rocks-and-minerals-by-color-and-shape | true | false | Select the white rock. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAByFklEQVR4nO39WZNlWZbfh/32cKY7+fUhwmPKsTKruqsaDTZBCEQbZaAkEKBg0CNMk5me8ISPApn0GQAZzSQZ9UCZcQBAgqQwClB3A91AVwFVnZVZlZExePh0xzPuvfWw9jl+PTLSI6uyCkU07jKLOD7de8+w117Tf/2XCiEE9rKXvbxR9K/6BPayl/8py15B9rKXO2SvIHvZyx2yV5C97OUO2SvIXvZyh+wVZC97uUP2CrKXvdwhewXZy17ukL2C7GUvd8heQfa... | 0 |
math | grade-2 | compare-vertices-edges-and-faces | true | false |
Which figure has fewer edges? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAIAAAACACAYAAADDPmHLAAAJ9UlEQVR4nO2cW2wU1x2Hv921TUO4KIHEmFILknC3uTghFBIFgSiQhJBIoETCQnVbaCu1UkRlVcEpyCoY2gdLVGorJYgQeqEIkwcgaZKm1JXaSo1b46W2bLH2unFxNoZQqHwhsKx3+rAMHOPbrnfOnDOX7wV5Zz0zYr7/7/x2dr0BwzCMrji0XYeefkgY+LiYnABMDMHs8ZCfB4Gum4ZR1636tHxUsHwS5LReT/1QkAdz70/Z4eNeevrhQh98FofIdQh2J1Ib/Iv... | 0 |
math | pre-k | squares | true | false | Which shape is a square? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAADyklEQVR4nO3azW4VRxBA4XOvfxaEn10iHgDyCMgvyYPxBkB2WcTZ2mAJx1eTxWBhwIDtO1PdXXXOalotlWrxqVezmaZpOr2Evy7gfAdXE2Z7d7iBJwfw4hH8cQyb00/T9Oas9VqWuVdP4fD9xXx4fgx//jYrNNu38x28/Qj/XMK7C9ieXc0XIrMle3IwmwL4sIPt7saF2ZJdm/pvgm3bVaxKQrOQhGYhCc1CEpqFJDQLSWgWktAsJKFZSEKzkIRmIQnNQhKahSQ... | 2 |
science | grade-5 | identify-vertebrates-and-invertebrates | true | false | Select the invertebrate. Hint: Insects, spiders, and worms are invertebrates. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAEAAElEQVR4nOz9V7Ak53Xg+/7TV5a3u7b37b1Dd6MbrmFIgCDoPSmSohwljSRqRGlmpCM3IzdDjqSROBqKEo1EkRQ9AYIACe+7G+3N3t3b29q7vK/MSnsfEDdOxATmBuLw5dwIrZeq+KIi6uVXq9a38stcwqt1398WgojEv8W/xf8ro+nCzTZsWJCQ4WT8tXXx3+D+W/y/PSISbAu99r7l/t/r4r/B/bf4/4f4/zq1/f97TX69D/7Bh+/H9SV8waE37LF9sh9JEvC... | 1 |
math | grade-6 | front-side-and-top-view | true | true | If you look at this object from the top, what will you see? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEDCAYAAAAPwnN0AABMSklEQVR4nO3df1yU950u/IugwSBmxo08EsnJDE/00ZA+L4YEDe1GZ6hEo6cbhhyibpuF0TRRWmGGmtNKkiODTQTTmhl+pLo2kYFNT6OlGUiy/iqGwdhUNJHh1BJ9NPHGaDFlk4wCioYfzx/DfQuKBmVm7rnH6/3XSqN87GZfr4vvfuZzhfX39/eDiIiIiIh84ja5ByAiIiIiCiUM2EREREREPsSATURERETkQwzYREREREQ+dMsFbI/Hg8LCQoSFhWHp0qXweDxyj0R... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA/AAAAEDCAYAAACSxu+QAABYrElEQVR4nO3dfXjU9b3u+3eMGAzgDFtyROlxJkfY0rTnSqKgtEuYyYKqsLsk6UmF1dWTDLgs0AKZ1J4u0naTgaUkdFUzeWh1USWT7HZXWGkTtBuEgpkgWh6UTE4twgHLLygNLmodSMCAeTh/DDNFQAhkJr9MuF/X5eWVSDKf9CGX93zv3/eT0Nvb24uIiIiIiERFQkKC2SOIyBB1g9kDiIiIiIiIiMiVKcCLiIiIiIiIxAEFeBEREREREZE4oAAvIiIiIiIiEge... | 1 |
math | grade-2 | correct-amount-of-change | false | true | You pay 85¢ to buy a bottle of soy sauce costing 80¢. You receive the following change:Is this the correct amount of change? | "iVBORw0KGgoAAAANSUhEUgAAAnEAAABECAYAAADupWMPAAAglklEQVR4nO3da3Bc9X3/8ffZc/ai1V6lXV2tmyVZV1/kK76Gq8FJCMNASS8DmbQk7YM27YRMkw4zvUybPkgvyTBtPX2QtoGW1GEaJ0CSEuOAjcHYxjZgLMuSLcur62p12at2z17O+T/wf0/wP4Y/NLaJ6Pc1o5EQ0np1Hn3m+/t9v1/FNE0TIYQQQgixrNg+6jcghBBCCCE+PAlxQgghhBDLkIQ4IYQQQohlSEKcEEIIIcQypN2sf6hUKpFMJslkMiSTSZLJJEtLS5R... | [
"yes",
"no"
] | null | 0 |
math | grade-2 | write-subtraction-sentences-to-describe-pictures-up-to-two-digits | false | true | Which subtraction sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAfQAAAH0CAYAAADL1t+KAAB1bUlEQVR4nO39eXBb92H3/74BECsJ7pQJLqK1WrY2SlFsyXGsSI8TO3HkKInqbJ1Ebvu0aXM749626fTOZG5vnLn5Zab5dTq/28mTNk7UjhP75zoT142dunbcp3Yi2Y4WSrEsazFFyxKphRQXLARAAOf+cShwAXAAEoBEQp/3DEcCz4LzIgb8gmcBbIZhGCillFJqUWe/0RuglFJKqeLTgK6UUkpVQBrQlVJKqQqoJAO6MREiMXTMcnqurJa73skhRzmSQ45yJIccsyv... | [
"92 − 9 = 83",
"93 − 9 = 84",
"93 − 8 = 85",
"94 − 9 = 85"
] | null | 1 |
math | grade-4 | identify-faces-of-three-dimensional-figures | true | false | Which shape has a triangle as a face? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAqHUlEQVR4nO2deXRc5X33P/fOPiPNpl22Zcu7QN5lYxtsIIBDmgTIQpqSrT3lNG/TkrRJIIHE9Lw979umJG+TljZJCZBA0iasDaZZGkyIgQZCABsZvGF5kSVrG2n27d5Z3j9mkWQbW7Jm5t6Rns85HB+P7sz9Cenr57nPb/lK2Ww2O6jA0RiE05DKIhAIyoRRgloDLLNDkxmkwWQ2+0pI67AEgrnHZU4wvh3L/aXFDCscOXUKBILyEE7D4SgMKHAkBnIolfuCEJ9... | 0 |
math | grade-2 | match-digital-clocks-and-times | true | false | What time does the clock show? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAN8AAAA2CAYAAABHskxmAAAItUlEQVR4nO3dWUxT2xoH8P+WFiIUFZUSFAciigQxKkWpihNWjGMEIRAV7EPVNxwSEaPGRFGD8cGoqFGJBOOIYhhSIXVqQ0nUQKOgwjkmkhhvtQ4NIkgZvvvQw772Avcec4St9PslTdh7rbXXt4B/u+kurUBEZHUAfzYDXzqAdgJjrA/IBMDXA5joDQR4AoK1lehRo9RlMeZeZg0BZH80OzcCPYFQH2cyGWM/35cOoO4r8C8HUN8MDGpsdzZw8BjrW74ezpwBQFM... | 0 |
science | grade-7 | identify-rocks-and-minerals | false | true | Granite has the following properties:
solid
hard
not a pure substance
naturally occurring
not made by living things
no fixed crystal structure Is granite a mineral or a rock? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAADRcUlEQVR4nOz915MkaXrmi/1cu0eEhxaZkVpUVZauaq2mezSAGQALcZY0grvGQ+MFSePt/gc0GnlxyF1yzUizNSNpxjUYDnaB3YM9wGIwmEF3z7Turi4tslKryNA6wrU7LyK7umcw6MGeHgA92HzMosrTI9zDI+J7/Pte9bxCFEURpzjFKX4mxH/oCzjFKb7MOCXIKU7xOTglyClO8Tk4JcgpTvE5OCXIKU7xOTglyClO8Tk4JcgpTvE5OCXIKU7xOTglyClO8Tk4Jcg... | [
"rock",
"mineral"
] | null | 0 |
math | grade-5 | is-it-a-polygon | false | true | Is this a polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACHCAYAAAAslC4OAAAKP0lEQVR4nO3d24+c9WHG8WdmvLPsLqagHghgR0Ep+ADYHJQUp+pFVW7am7YyIkZVOIdDCoYmveof0IuUNA2hkIADsZM2RMEVuWmlqEqUKgdU2toU7N2QokYFTEijSAler3cnO28vZjYebQPs2rM77zvz+VztxVz89u7Z9/3ub2pFURQBAAD6oj7oAwAAwDAxsAEAoI8MbAAA6CMDGwAA+sjABgCAPjKwAQCgjwxsAADoIwMbAAD6yMCmFL54bDG/+S/z+eqP2oM+CgD... | [
"yes",
"no"
] | null | 1 |
engineer | grade-6 | identify-laboratory-tools | true | false | Select the round-bottom flask. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AABcpklEQVR4nO29ebQk2VXe++19TkRm3vnW1HP13JpnBEY8MG3gCQlkqdWtMhISy8IPZBAGzLKxeTzea4xttOy18LL8EBJ+WCAkdavoEhYYjGVwIxAgkNCAJCT1pB6qqmu+dcfMiDjn7PfHiZMxZOStW9XDvVk3vrXy5hSZNzIifvHtvc8QQKtWrVq1atWqVatWrVq1atWqVatWrVq1atWqVatWrVq1atWqVatWrVq1atWqVatWrVq1atWqVatWrVq1atWqVatWrVq... | 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/t0lAAAfh0lEQVR4nO3df3CV9Z0v8E+AWghUckGo/KphVEIlDskGC8iMhOrslbVR6L0u7NqpirJUd+tvW7rT1lTRslt3oUWp7bZIq+3iLmtROpaOFsK6DsQ1S7hGS1ynCQYU8VcUAkiBc//oNbcIUcx5ck7OOa/XTGc4z/ckn3fGP867T775PkWpVCoVAABAIvpkOwAAAOQTBRsAABKkYAMAQIIUbAAASJCCDQAACVKwAQAgQQo2AAAkKGMF+8CBA3HgwIFMjQMAgKzIWMFubGy... | [
"positive trend",
"no trend",
"negative trend"
] | null | 1 |
math | pre-k | count-pictures-up-to-5 | false | true | How many chickens are there? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAACbCAYAAAAX3e8+AABGrklEQVR4nO3dd3Rc13nv/e8+ZwqmoQx6b0QhAYKdlEiqWc2y5cSOE9txEsctb1Zy4xs7zTd2rtOc3Js4cZx204sd23GLLVuxJKsX9l7AAoBEIXovg+lzzn7/GBAUREoiKYIggeezlpZEzCn7DH9r8eHW3s9RWmuNWBS2ZaFtG2UYGKa51MMRy4zkSwghhBBXYiz1AJaDK/0daf8X/oF/3/gO/jyjjm8+8NOc+dZ/L8HIxHIg+RJCCCHEtVAyg3/9tNac/Jdvcu7xZwi... | [
"2",
"5",
"3",
"4"
] | null | 0 |
math | grade-5 | compare-fractions-and-mixed-numbers | false | true | Which number is greater than the one shown? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADNCAYAAACCVwcEAABc0klEQVR4nO39eXhcd37fe75P1akFBRSAwr4QK0EABPedFEVRLYlqtSj1ZrWd8djXbSe5njhPYsdO5pl4ru/k3mdiO+MnjjN37hLHTrzkXue61d2ympS6SbZaEkmRBBdw30CCALHvBaCA2us3f5xCASC22kAWxe/redTNRp06dQqf5tG3fvX7fX+aUkqR4cIh4x+r/VlfiViOZJT5JKPMJxllPslICBEP/VlfwEr6OiKMDPjx+abpeRjAN+MnEPDj9foJh0P4/SFCgTA... | [
"6+7/10",
"6+3/10",
"6+8/10",
"5+5/10"
] | null | 2 |
math | algebra-1 | interpret-a-scatter-plot | false | true | Does this scatter plot show a positive trend, a negative trend, or no trend? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFhCAYAAABK/t0lAAAqD0lEQVR4nO3dfXSU5Z3/8U8CRBJnSDYPlkkIDRtw0oCnkESbDD0o/hSCErGtHKrd9WiRivurruBZwZ5djU89wSPV+sBCfWhrcbFr6k8Lx+JGLaBJgDKRHglMLJWYEBIgg4GEBEJgfn+wjAQyw4PXzD0zeb/+4r6vMd/vBeeYT65c93XH+Xw+nwAAAAAYEW91AwAAAEAsIWADAAAABhGwAQAAAIMI2AAAAIBBBGwAAADAIAI2AAAAYBABGwAAADAoogL2kSNHdOTIEav... | [
"positive trend",
"negative trend",
"no trend"
] | null | 2 |
math | grade-5 | classify-triangles | false | true | Is this triangle equilateral? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADfCAYAAADMSaSUAAAgpUlEQVR4nO3dXXDU9d338c9u1y7XjmydxJro7d69OptrdFbbIXjdogZLsETQouWpEh7EhBGYxJAAHrWdHnjUmR4w0+mM07nnAvIAqQQaaOUp0gssiBZ6YbLBALKgXbgJajBBgywJy/7vg2QTkAAh2d3fPrxfR2Sz+/9/UA4++eX/+/5slmVZAgAAABATdtMBAAAAgHRCwQYAAABiiIINAAAAxBAFO0bq6+s1duxYbd68ecjvv/vuu7LZbDp+/HiCkwEAACCRHKYDpIP... | [
"yes",
"no"
] | null | 1 |
science | grade-5 | animal-adaptations-feet-and-limbs | true | true | Polar bears live in cold, snowy areas near the Arctic Ocean. The polar bear's feet are adapted for walking on snow and ice. Which animal's feet are also adapted to walk on snow and ice? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOy9ebwcRdX//66q7p6Zu2fFAAFJICgEwioQREwAZRNQgrKKgIKyg6AiX3kEfHAB5YfIJqhEFmVRBEQeNtmSgIEE8rDJToyETUL2e2e6qs7vj6rp3EsScoNRhKc/vO6L3Jme7uru6rmfc+pzPkeJiFhr8d5TokSJEiVKlChRokSJ9ye01iRJgsrzXEpyX6JEiRIlSpQoUaLE+x9aa3RJ7kuUKFGiRIkSJUqU+GDAe49+rwdRokSJEiVKlChRokSJVYeS4Jc... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOy9d9xlVX3v/15l733Kc55e5pnGMEOTLkUUxQg2VMQSNBZMbFEvdtRY8tMby41XMXLVYI/BghE1McYkJqLXCio4lADSmT5PL6efXdZavz/WPmcYARnMGIz3fF6v58Wcc/bZe+122J/1+Xw/X+Gcc1mWYa2ljz766KOPPvroo48++vjvCSklWmuEEA/1UPro4/cSsk+c++ijjz766KOPPvro478/rLVkWfZQD6OPPn5vIfvEuY8++uijjz766KOPPn4... | 1 |
science | grade-8 | use-punnett-squares-to-calculate-ratios-of-offspring-types | false | true | In a group of dachshund dogs, some individuals have rough fur and others have soft fur. In this group, the gene for the fur texture trait has two alleles. The allele for soft fur (f) is recessive to the allele for rough fur (F). This Punnett square shows a cross between two dachshund dogs. What is the expected ratio of... | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAD6CAYAAADUdTPBAAAM8ElEQVR4nO3dX2iV9xnA8efkz+kxqYlhqbpBwIzaDdZ1dUa8SDtru9FSNxjCyhrEi0EZZBW9H+xiKzK86LzYVfFWVgpluMGYGzo6CO3gFC/cKr0YDLvaxunMMj2aJvHsIvakIa4YY9/3+Pj5XJ3z8sbz8Htvvr75nTeVZrPZDAAAIIWOsgcAAADuHIEPAACJCHwAAEhE4AMAQCICHwAAEhH4AACQiMAHAIBEBD4AACTSVfYAcLe6fv16HDt2LE6ePBkXLlyIjo6OePr... | [
"2:2",
"3:1",
"0:4",
"1:3"
] | null | 0 |
math | grade-2 | identify-repeated-addition-in-arrays-sums-to-25 | false | true | Which addition statement describes the array? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADACAYAAAA+yRTaAAAT/klEQVR4nO3dsWsbed7H8U8eUmxgw4h0TjVk3cU4Wp4r5UTNwV1hR7DRdhclxXY2kdgcpDBoBGkWAhZYV92CR9vaB4r8DyiR+h0vceeEqazOjHHh0k/hjLJJnnM00u8nOZr3q1pM/Jvvp1j48B3PzBXP884EYCqq1eq0RwAAAIb9z7QHAAAAAGbJ1fg/2KQBk1Or1aY9AgAAsIQNNgAAAGAQBRsAAAAwiIINAAAAGETBBgAAAAyiYAMAAAAGUbABAAAAgyjYAAAAgEE... | [
"2+2+2",
"4+4+4"
] | null | 1 |
math | grade-4 | identify-rhombuses | false | true | Is this quadrilateral a rhombus? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEPCAYAAAB4ALMPAAArCElEQVR4nO3daXDVVbrv8V/+2UMmIQgSIAwRBMIQwgwJIA5tSzu02h4VxKm6bt2hu6pbT7cv+pw+p07pude2bvU51ulbdcsXbd2jraK2jS1q29qOzCBhCEGmMEmIQCIBkp3sIf//fRHI2kpIAuxk77329/Mqyc6wkr1f/LKeZz0ry/M8TwAAAAASwkn2AgAAAACbELABAACABCJgAwAAAAlEwAYAAAASiIANAAAAJJAv2QtItAMHDuhXv/pVl489//zzKiws7N8FAQA... | [
"no",
"yes"
] | null | 0 |
math | grade-1 | more-less-and-equally-likely | false | true | On which color is the spinner less likely to land? | "iVBORw0KGgoAAAANSUhEUgAAAcEAAABkCAYAAAD+HYsBAAAQe0lEQVR4nO3df1SU5YIH8K8IyO95BxnTTRDRNFFQ5x2xbnlLNKt7K2zbEhBL3O7pdrtdz24KaJZrp3Pzom17zp6zu3dTMFOgTlndezztpqa27cV0ZlAEr6IIAmX8nBeZYfjhwv6heEx+DszM887M9/OPx+Hlfb7z1/c8L8/zvON6e3t7QURE5IP8RAcgIiIShSVIREQ+iyVIREQ+y190gNGw2dqhtCpQLAosioJWRQEAaCQJWkmCpJUgaSSEhoaIDUpERKo2Ts0LYxo... | [
"pink",
"neither; white and pink are equally likely",
"white"
] | null | 0 |
math | kindergarten | squares | true | false | Which shape is a square? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAACcUlEQVR4nO3UO25UQRBA0ZrxJ+CbgVgAsAR2Q8DCCFgOO+CTY1IbW7Lx6BE8IZHjuSPMOVG3WipVcNWbZVmWs5uZr1czF7uZ22Xgrx1vZh4fzbx8MPP8dGZzdr0sH88PvRb32ZsnM8dfrtbLi9OZ1w/XCuFvXexmPl3OfLuZ+Xw1sz2/XR9Exl16fLQ2NTPzYzez3f3xAHfpd1M/l5ntYVfhfyE0EkIjITQSQiMhNBJCIyE0EkIjITQSQiMhNBJCIyE0EkIjITQ... | 0 |
math | grade-7 | describe-a-sequence-of-transformations | false | true | What combination of transformations is shown below? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEyCAYAAADA5Kd8AAAoEklEQVR4nO3deXhU9b3H8U9mJhsJCYQ9AQLIvsgSZBVcb7nitbZW67VWvXIrtFUQd9uLtV65Ltgqbq2KxVsVW8VdluIVKatswyabC0sgCcSwZJnsM3PuH5OJgpBkkpNzMjPv1/P4PCbPmfP9RvHhw/F7vr8YwzAMAQAAADCFw+4GAAAAgEjiCv5N2ZLp8uXvsLMXNIO4wdcq/rxf290GAABA1KgN2ITryHT88F4dcbjtbgNolKysLLtbAAAgZK7Tv5H0k4csbSAvL0/... | [
"translation, then reflection",
"rotation, then translation",
"translation, then rotation",
"rotation, then reflection"
] | null | 2 |
math | grade-4 | estimate-angle-measurements | false | true | What is the measure of this angle? Choose the best estimate. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAA/CAYAAADaDb8WAAAEYElEQVR4nO3dO2xVdQDH8d8lxChviZSEgQKrxlEmhSKOtT4WB+8lWlfaRJ1MiDEM4qCEhsEFDa2Dg0vBTcPDx4ATJAwaBxKSDiqEllg2PA7ESnkJeHvPOfd8PuO5w/2l0/f+8z9pqyiKIgAAQFcsK3tAr5w+fyoTxw+VPQMAgD7X14E9Oz+bA199mIHXn8gL+3ZncGCw7EkAAPS5Vj9eETl74WwOfz2RyROTC88eX/V4fpv6o8RVAAA0wfKyB3TT0RNHc/jriZy7cG7... | [
"45°",
"90°",
"15°",
"120°"
] | null | 0 |
math | grade-8 | compare-linear-functions-tables-graphs-and-equations | false | true | Function A and Function B are linear functions. Select all the statements that are true. | "iVBORw0KGgoAAAANSUhEUgAAAjcAAAGlCAYAAAAGbtd7AABYr0lEQVR4nO3de1xUdf4/8NfMwHAZQBAEL6CCLmqioquBlbJa3rM2r6WZuaXtbm61m1Zbq63Wr3vb1XK1m5bbxXXTtMw21LIUyUqaTLEcRkFkuMgAw9xnzu8Pv8wKAjPDOXCG4fV8PHqYM4f3ec/4ng/vec85ZxSCIAggIiIiChJKuRMgIiIikhKbGyIiIgoqbG6IiIgoqPjU3CQkJEChULT439GjR9s5Td+99dZbUCgUyMzM7PB9f/HFF57nZNSoUR2+fyLyz5w5c1p... | [
"The y-intercept of Function A is greater than the y-intercept of Function B.",
"The y-value of Function A when x = 6 is less than the y-value of Function B when x = 6.",
"The y-intercept of Function A is less than the y-intercept of Function B.",
"The y-value of Function A when x = 6 is greater than the y-va... | null | 0 |
science | grade-2 | identify-plants-and-animals | true | false | Select the plant. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADeCAYAAABL7FARAADiaElEQVR4nOz9acytWXbfh/3W2ns/zznnHe5Qdauqq7p6IptNdnPQRNmkJStSJEtwHMeIEShIPhiBjAQZbCRADAMRgkzWh8RABghI7EBO4FiILFmyJMeyIsuyooGM2KQ4NIdmd7MH9lRz3Xvf4ZzzPHvvtfJh7fPeVlB0mrxfHID3S1dX337fc55nD2v9pyU//dT9U2dwkfjtP7/95z+Xf647fOEW3ljhQYbfdz/+vf72wv3tP/95/3OR4FNn8c83/dm/199euL/... | 1 |
math | grade-6 | absolute-value-and-integers-word-problems | false | true | The houses in Carmen's town get their water from a local reservoir. Carmen and a group of engineers monitor the water level for safety and health reasons. The change in water level over two months is shown in the table. During which month did the water level change more? | "iVBORw0KGgoAAAANSUhEUgAAARMAAABfCAYAAADLRCMbAAAZiUlEQVR4nO3de1hU1f748fcMDDDc5A6CgKCihoCaYt7wfjdDS+1iqWV6OpVp5umYld88x192NL9+07KjnuqkZenpmBdIMhTxRireEVABUZD7bbjMMDAzvz+QyRGSGRwdtfV6np4n11577c+ay2fWWnuzt+SVA911/MEtCv+eD89OtXQYgvBAk1o6AEEQHg4imQiCYBYimQiCYBYimQiCYBYimQiCYBYimQiCYBYimQiCYBYimQiCYBYimQiCYBYPfDIZ7PcM8yI2WDo... | [
"April",
"May"
] | null | 0 |
math | kindergarten | count-to-100 | false | true | How many triangles are there? | "iVBORw0KGgoAAAANSUhEUgAAAOwAAAAvCAYAAADgryYOAAAFDElEQVR4nO2dQW8bRRiG393xrp21nbWTTY0DrUilShx74sLf4IjEX0DcuHDjikglLkj0Qk5BCSdq5QKokVBVQROJg0FVSh3h1hYOiXFs2ZYdczAOVtSEjT27M680zz3rJ6/87Xrn+3bWGo1GIxgMBgps1QIGgyE8pmANBiJMwRoMRJiCNRiImKlgW90ztLpnsl0ihdF50Bli0Bmq1rgWjDkzOc9UsO9//gLvflql+ScBTucnH/2Cxx/sUxUtY85MzjMVbL05xGn3DJs... | [
"5",
"1",
"6"
] | null | 0 |
science | grade-8 | identify-ecosystems | true | false | Select the tropical rain forest ecosystem. This ecosystem has:
long, cold winters and short, cool summers
many evergreen trees
soil that is poor in nutrients This ecosystem has:
a small amount of rain or snow
dry, thin soil
long, cold winters This ecosystem has:
year-round rain and warm temperatures
soil that is poor i... | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAp8AAACtCAYAAAD2xRSHAAEAAElEQVR4nOz9ebRlaV3fj7+eYQ9nulNVV1V3Vw80DY0tg9CiqKhgVFbULCMixCAsgkaNMXGCBJUlMWYp+RKyXChBEwVRTNSlcViJ0SiCgiIIyNDI0EDPNdedzrCHZ/r98ey97zm3bnVDIsIvvd+1Tu27z56e/Zxz133v9+fzeX/EX+2FcNsIJooePXr06NGjR48ePT4jmDr46BzEvg2hJ549evTo0aNHjx49PtOYOhAhhPDZHkiPHj169OjRo0ePRwb08sp3vfH... | 1 |
math | pre-k | are-there-enough | false | true | Are there enough lids for every cup? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEECAYAAAASx0PMAABLJklEQVR4nO3dd5Rc933f/ffvTp/Z3nsBsOgdIECCvahTjZQllzhS7BOXOD5OnsQ5fh7bT0scPydOnDhxYsuOHFvFsmVblCiqkRTBBhIsIAEQvW7BYnvf6TP39/xxtw12QYDUECDFz+scEbt37sy9d/767Fff3/dnrLUWEREREREpCudm34CIiIiIyE8SBWwRERERkSJSwBYRERERKSIFbBERERGRIlLAFhEREREpIgVsEREREZEiUsAWERERESkiBWwRERERkSJSwBY... | [
"yes",
"no"
] | null | 0 |
math | grade-7 | similar-and-congruent-figures | false | true | Are these shapes similar? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADpCAYAAAAeakAkAABN9klEQVR4nO3dd3yN5//H8VcWWSRWjPghDTFifKutPTtUjbaoldp7b2JvtffeaqtRJWq1KEqrSgWpvSpCBImQPX5/nIqmaJWT3Bnv5+ORR865c851v2/ffvnkOtd9fSzi4+PjERERERERs7A0OoCIiIiISFqiAltERERExIxUYIuIiIiImFGiArt169aMHDky4fn58+d54403WLhwYXLnEhERERFJlRIV2KdPn6ZkyZIAHD9+nPfee49JkybRsWNHQ8KJiIiIiKQ2Fk9... | [
"no",
"yes"
] | null | 0 |
math | grade-2 | am-or-pm | false | true | Russell is telling jokes at a dinner party. The clock on the wall shows: What time is it? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABOdUlEQVR4nO3de3SU5bk//O9zmEMOMzkRTolyUiGhBcSWRK20uxr8bbHudwttpdpdsbXWtUtD3wpd622hS3D/UaFLqF27Hiq0u91qK7j3Umm3iXb/GoskahFomYiFQGRCiIEcnpzm+DzvH0OGhMzhnvNM8v2sxSIzc88zt2HGuZ77ue7rkgzDMEBEREREREkhZ3oCRERERESTCQNsIiIiIqIkYoBNRERERJREDLCJiIiIiJKIATYRERERURKpmZ4AZQG/AfgNGJf+Dv4... | [
"9:45 A.M.",
"9:45 P.M."
] | null | 1 |
math | grade-4 | angles-of-90-180-270-and-360-degrees | false | true | What fraction of a turn is this angle? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABPCAYAAADRL7LXAAAKGklEQVR4nO3df2zU9R3H8dfRgmh7o2gg14xxRY/rlAL3A2c1o7Qk21SWWfAP/WPREnWZyxJLouAydfwymfxDTZzO8MPi/EP+GHSGotPFXkGxTu9H+THWH5OWsNwpkR5+iyKF3v5oe2tr2/tB2+9deT6SJm0/97173X+vfPP+fj6WWCwWEwAAAIBxMc3sAFOFYUTNjgAAAIAMQMEeBzt2blTjoTqzYwAAACADULCvkq+xTrt2b1I43GF2FAAAAGQACvZVMIyonnnuQUn... | [
"3/4",
"1 full turn",
"1/4",
"1/2"
] | null | 0 |
math | precalculus | identify-graphs-of-continuous-functions | false | true | Is the function f(x) continuous? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AABpU0lEQVR4nO39e3gT9502/t+yDpZ8lE/YxmBzdmIHAyYGTHCAQBMKaRpIKelu2qabbvt006a7T3e/afv029+zLc3Vb9u02zZJs7tNk3TTNk0acoKYhASDiR0wGDDYEDAGfMD4IFuWdZyRNPP7g9rFHGX4fCwZ7td19WosjW6/LaTRPaPRyKDrug4iIiIiIhIiLtoDEBERERHdSFiwiYiIiIgEYsEmIiIiIhKIBZvoJrJ9+3ZMmTIFa9asifYoRERENywDP+RIdPNYuXI... | [
"no",
"yes"
] | null | 1 |
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