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 | spheres | true | false | Which shape is a sphere? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAWTUlEQVR4nO2dTXAbx5XH//ONjwFIAqREyinCVWtqbUm7VZZcG/sg+aKtWHFyWPuQS5zLHuTr5hzfkrOv0WFP9iUHabeSiuRUJQdTh01SFlW1pY9E8lYZrDIJmQAoAIMB5qNn9tDoIUBCIiXOYGaA/l0kQSTQmP7Pm9evX78n+L7v12zgaxPoEMD1weEkDlkAChKwlgNOqoBQs3z/r+24h8XhHJ3vFwH5sUn/saIC/5inquZwkkaHAH/vAts28MgExLZL/4OLlpN... | 0 |
math | kindergarten | count-scattered-shapes-up-to-5 | false | true | How many shapes are there? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAC8CAYAAAANdNqwAAAYiElEQVR4nO3d/1NUd57v8dfppqGBhu7GXaVmmB0SLcVyxAtqRPBOZXUq0Z3Sujob56+4f8X9a0ZntEprY2bLONZGlATFiyEBLU3YaGaJMXQDDTT97dwfsjt3ZxITaU73+3x5Pv6APk9NJXlBn/M5juu6rgAAAACEQsw6AAAAAIB3GPgAAABAiDDwAQAAgBBh4AMAAAAhwsAHAAAAQoSBDwAAAIQIAx8AAAAIEQY+AAAAECIMfAAAACBEGPgAAABAiDDwAQAAgBBh4AM... | [
"1",
"5",
"2",
"3"
] | null | 3 |
science | grade-6 | match-chemical-formulas-to-ball-and-stick-models | false | true | Select the chemical formula for this molecule. | "iVBORw0KGgoAAAANSUhEUgAAAQ0AAABrCAYAAABtyNf7AAAmAElEQVR4nO19a3Acx53fr3tmsbsgngRAEhBICAQlUiIoWT7bEq34ZEtnO5Xcyc7FuaNsX7nqviTlVK4SJ5Vyqlz54i/+kIov9icnVcndpeqilM+KfJdLIisnWT6bMuk7K7JAiQ/xJYAEARAEFq9d7O5050O/Z2YBglxgd8n+VQ12dqanp6ex/Zvf/zE9hHPO4eHh4XGboI1ugIeHR2vBk4aHh8eW4EnDw8NjS/Ck4eHhsSV40vDw8NgSPGl4eHhsCZ40PDw8tgRPGh4... | [
"HF",
"He2F",
"H2F",
"HFO"
] | null | 0 |
math | grade-4 | identify-trapezoids | false | true | Is this quadrilateral a trapezoid? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAC7CAYAAABfLOnYAAAZIklEQVR4nO3dTXRb5Z3H8d/VuyzFsR3L73HsQGkpbRhapu1qusgKNnSVDWxg0dMFi04Z4qadlDKBCQlDz+k5LOawoBuYRVZlUVhlwZwz59AzHchAS9IJExvHjl/jF0WyLFnSnQXxfeQzRPhF0nMlfT+r+/jca/9PsZufpOf5/x3XdV0BAAAAqImA7QIAAACAVkLABgAAAGqIgA0AAADUEAEbAAAAqCECNgAAAFBDBGwAAACghgjYAAAAQA2FbBdwLzPnl1RYKSrUyWu... | [
"yes",
"no"
] | null | 0 |
math | grade-5 | compare-fractions-and-mixed-numbers | false | true | Which number is greater than the one shown? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAADTUlEQVR4nO3aIW5bQRSG0TuRF9HKi2hhS4yCirsDM4PiLCG4wMw7KC4KMintJqwuY0IcqcR2wV/NJO8cFg24V7nk05Nb770XAAAQsaqq+vrzW/3683vwKr2q2mLnf37/sX58+X7x3Y3Gz791IwCAqqq7qpog3KrGhtv4+bdu4Ebj589xAwBgdqu//3i43w1Z4vFpb/4/Om2P/3GTy9aHzRTzX8ONAIBluxu9AAAAvCUCGwAAggQ2AAAECWwAAAgS2AAAECSwAQAgSGA... | [
"1+6/9",
"1+3/9",
"1+1/9",
"1+2/9"
] | null | 0 |
math | grade-2 | which-shape-illustrates-the-fraction | true | false |
Look at the colored part of each shape. Which shape shows one-third? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAACX0lEQVR4nO3Vv2oUURxH8e/svyImrpViGUStEuxS+QQBe/u8Q4rUQt7BB0gf8AnSpVSbGEE719JsspB1l2sxBGx3su7InvOpZhgu9wfnXqYqpZTRNPk6ScbzZFaiNdKrkq1u8nwjeTJIqtFtKedXbY+lVdh7mPQuJ/XL00Hy8kF9GrQ+xvPk4ib5MU2+TJLO1az+YOz1tNWt2ybJ9TzpzP/6oPV01/Z3STrtjqJVMziMwWEMDmNwGIPDGBzG4DC9JosO33/M5++... | 0 |
math | grade-4 | nets-of-three-dimensional-figures | true | true | Which net will make this figure? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAAQVklEQVR4nO2daVhUV7aG36IYClAmGQSRwQEFRRyimJZE4xj7ivdiO0VvqwTbpNXEMk60sWMZvY+iHcQMDgwBjXa0jQmmTV+HcNXuoDFqBEFFcaggaBikinmu0z+IdcUo1CQUWO/z+EPq7LVX8bHX2Wuvvc8RCYIgYMJoMGtrB0w0xSSIkWESxMgwCWJkmAQxMkyCGBkmQYwMkyAGYN++fYwdO5ajR4/qb0wwoTOZmZlCSEiIAAiA4OnpqbdNkyA6UFxcLCxcuFAthLi... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUkAAAC+CAYAAAC4av29AAAgfElEQVR4nO3deViU9frH8fcMqyyCCLghKiqighRlZFqaaeEpTDtaHVvUtFApFXP5HaPENHdF/SlpapJ6Sm0z7VemmXqOpmSLCBiLIim4AMoysjPM748JTm7IMsMzA/fruri4wpnnuSedD9+Z+d73owJ0CJOh0+m4XApnCkGjhXL52xGiQVmqwNECutpBK2tQISFpUi6X6PgpX+kqhBAAgc3BUukixI1SCvXf21hDN3v9bzQhRMPRaCGpAC6VQnIhqJUuSNwov1z... | 0 |
math | kindergarten | represent-numbers-up-to-20 | true | false |
Which picture shows 8 triangles? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAZYAAABcCAYAAABN/JPwAAAHHklEQVR4nO3dz08bdxrH8Y8xGGOwaUmVaFeFW+CSqIpEVCUiJzgmOfSSvfa4f1H/ix66f8Leetlz2z21SrDBxcI/BsPYnh4mY+PKEHv8fOdH9H5JUUwwM/M+PXJ47CkEQRDUb6T/e1JnKA0CAQAwt9WCVC1KjyvSo5JUqF8Hwc/ttC8LAPA5+LYmrf7mhV/8oyQdbIZTBwCAeXWG0i896fRG+tWTVtqD8BsMFQBAHNViOEMkqTuUVoa3vgEAQBzRDPEDaSXdSwE... | 1 |
math | pre-k | cubes | true | false | Which shape is a cube? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAARl0lEQVR4nO2da3AU15XH/z2SRqPRG70tCQmCHolhJUwsDAGDDWsHO8QmtY6pfLGp3VrXPhzbW1tbG3sf2a0K3toqZ21vvmQr5cifErzlBKIgxw4QYR7yijiSS3JACIMkJDSgGSTNSKN5aKb3w2i6e4YZIYnb3be7z+8LrZ6ee88MZ26f1z0tiKIoukLAFT/giwALIgiCOzIFID8DaHACFXZAcAVFscert1gEsXy2FgCZQ/7YH1V2oCk3ptUEwRu+CDA4B0yEgMt... | 0 |
math | grade-2 | match-analog-clocks-and-times | false | true | What time does the clock show? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEJCAYAAADhBFPCAABgVUlEQVR4nO3de1yUddo/8A8HBwQmleHgYOqACmpMh6UC1BKl1A5gpaWyT/u0q7hP7RbUlm6w1dY+UrlbQf3aQ+pW++wilVSAbXnAIA+ASafBA6jDaDk4yHgaBmEA+f3BzsQIM3PPMMPMwOf9evmSmfne91zqzMvr/t7X9/r69PT09ICIiIiIiIYFX3cHQEREREREzsMEn4iIiIhoGGGCT0REREQ0jDDBJyIiIiIaRpjgExERERENI/7uDoDc75KhG20dXdC3d/X+3tH... | [
"3:25",
"3:35"
] | null | 1 |
math | grade-3 | read-a-thermometer | false | true | What is the temperature? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAbc0lEQVR4nO3dX2xb6Znf8Z9kyZlovdHBQpuNga58vL5xikn9yimaAHXAIxSYXHRbkQV6FaQiC0yBomhJNldBseDhLtq5KBYUWxQFamBFFc1Nb3jUPxcJ0PJw41wkxcpnkCzGLZCdY6WtgVRtXyWuMmPZUi8UMabpmTHJV6Tk8/1cic/59+juhwfvec/M8fHxsQAAAAA4MTvtBgAAAIDXydw0HpqmqdI0VRzHfXXf9+X7voIgmEZbAAAAwNhmJrVEJEkSbW1tKYoiPfw... | [
"75°F",
"70°F",
"80°F",
"85°F"
] | null | 1 |
math | algebra-1 | identify-linear-functions-from-tables | false | true | The table shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAFQAAABeCAYAAAC98DOnAAAGuUlEQVR4nO2cbUiTaxjH/x5rTVop2WSDGluzqcga1gd7Qc0sA6EPrgRZYEUWBBXRgiAzJIKKgvRDG4yIbGngqTBKaSfKxBZ9CEroZZPVKqjlnGtsRjPd7vOhw0D0lLrrObqz+wd+8BKu/+2Pe88efa7daOuwsUQgUdb5BzikcKHEcKHEcKHEcKHEcKHEcKHECCo0Eong/PnzUKlUuHz5spBRJITDYRQVFWH16tXT7jGHcD1j8Hq9OHjwIHw+H1JTU4WKIaWxsREejwe... | [
"nonlinear",
"linear"
] | null | 0 |
science | grade-3 | compare-strengths-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. | "iVBORw0KGgoAAAANSUhEUgAAAg4AAACBCAYAAACowjIdAAAhfklEQVR4nO3deXQUVb4H8G/1nnT2jSxAQgiLdJBdZJFdGECEAdwRUEFkUMenzhMd34yOy0OfM8JxlEUNogjjQ30YEIUR2UGRAAkSAoQlQFaydZJOeqvu90dMDIalOqmuW9X1+5zjOaapVP3yO3Xv/dWt21Wc1+v1ghBCCCFEAA3rAAghhBCiHFQ4SODo0aPgOO6K/wwGA3r27InFixejrq7Op/3NnDkT48aNa1Msx44dQ8+ePREREdGm3yeEiEcufUNubi7uvPNOxMb... | [
"The magnetic force is stronger in Pair 2.",
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is stronger in Pair 1."
] | null | 2 |
math | grade-7 | mean-median-mode-and-range-find-the-missing-number | false | true | Jeremiah has the following data: If the mean is 10, which number could k be? | "iVBORw0KGgoAAAANSUhEUgAAAPIAAAAkCAYAAACzD2eWAAAGSUlEQVR4nO3db2wT9xnA8e/Zjm3ixAmEOJC/5C8QFFgDK2hpaRsgLYxV2ypV3bRpbGP/pE6rpmna3kx9s2lvNml7sU2TVqSJaaxruxVEgJaUsBZoWiAECEmcJmHx2Ymaf4tNnNixfXvhkCklL3B8twPr+bzLz87ze/Tkntzd785nRdM0DSAWg7k5SCQADSHEg0oBiwWcTrDZFoY0TdMicxCJmJubECJ1Dgc4nGCLxaSJhXhYRSJgtYElKk0sxEMtGgFLPG52GkKIdMT... | [
"34",
"13"
] | null | 1 |
science | grade-4 | identify-living-and-nonliving-things | true | false | Select the living thing. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAACif0lEQVR4nOz96a8la5beh/3WO0TE3vsMeTLzznWr61Z1VQ/V1QPFyaIsThZFm9BgGx4EGbJh+N/wP2B/NeBvBmzYgAHDskFKBCnSNsXJZLPZbDXZXVPXeKe8NzPPuIeIeIflD+uNfU4WS3azUh9koM9FIvNmnmHviBXrXetZz/Ms+Sc3qr+wgVPPH3380cd/LT/uCnx7B5/OcBHg33hkf+/+KHD/6OO/7h+nHn5hY3/elvu/d38UuH/08f8PH0ucJr3/u/DTPvH... | 3 |
science | grade-4 | read-a-thermometer | false | true | Select the temperature shown by this thermometer. | "iVBORw0KGgoAAAANSUhEUgAAAdsAAASLCAYAAADdzBdkAAEAAElEQVR4nOzddXwUR//A8c9pkot7iCARNITgUFyL1qBAKW2pu1N56u76e9o+9UJLC6VYqeDu7g4hxN1zuZz+/jhyJMSBI9B+369XX+XuZmdmd2f3uzM7u1HYbDYbQgghhHAaZVNXQAghhPink2ArhBBCOJkEWyGEEMLJJNgKIYQQTibBVgghhHAyCbZCCCGEk0mwFUIIIZxMgq0QQgjhZBJshRBCCCeTYCuEEEI4mfoIlqaugxBCCPGPJj1bIYQQwskk2AohhBBOJsF... | [
"53°F",
"51°F",
"56°F",
"60°F"
] | null | 0 |
math | grade-4 | parallel-perpendicular-and-intersecting-lines | false | true | Are these lines perpendicular? | "iVBORw0KGgoAAAANSUhEUgAAAGoAAABcCAYAAACGAiAnAAALPUlEQVR4nO2dfVSUVR7Hvw/B2SkYjMoNZ5Qoz+gcixLKGnpZPGkJqYl7gCytRAdHzRUdLC3UyNWzBYLvb7yEupQ6w5aCOtCWhdbAyZPasXAOrGFD0awvzMAMMAs4d//AmZ1ZGZDheaX5/AfDc+/v8D33ud/vPPfehyKEEPjhPQFcF+Dn1vALJRD8Qg2Sa42NOFFYiGuNjYz2E8ho60OUa42N+L6yErrt22G9egUyhQLPKpWM9ukX6hZxiqPXaPBL7Y8en01XZzDev1+... | [
"yes",
"no"
] | null | 0 |
math | grade-8 | perimeter-and-area-changes-in-scale | false | true | Look at this square: If the side lengths are doubled, then which of the following statements about its area will be true? | "iVBORw0KGgoAAAANSUhEUgAAABoAAAAOCAYAAAAxDQxDAAABv0lEQVR4nL2Uv8tpcRzH33QLdTiLsgh1JgMyMCk/MigGZh3JeKSUwT+gKFIWyykyyrHIJrNJHawWJYtInc5gOZ87POW56nS5z33ufddnefV99/p++tbXQESE/5Af/1qQyWSQzWZh/BXe73fE43HEYrFvFz5EmqaB53moqvrtkidRtVqFy+WCIAi/LfR6PUQikSdWKpVQr9cBAIfDAalUCgzDwOv1YrvdfoparRYURUG73X55s2KxCFmWsdvtAADX6xWTyQSCIEDTNOR... | [
"The ratio of the new area to the old area will be 1:4.",
"The ratio of the new area to the old area will be 8:1.",
"The ratio of the new area to the old area will be 2:1.",
"The ratio of the new area to the old area will be 4:1."
] | null | 3 |
math | grade-3 | coordinate-planes-as-maps | false | true | What is at (2, 7)? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFjCAYAAAAHNnwuAABlkElEQVR4nO3dd5yU5b3//9d939O277K7IF2xg4WioBgsSIwmijmxR42xxBBrNJacozk5KY9vjMfYYkv0HI+JGtN+iMYkNhTUGCOIDRtK77B9+l2u3x+zDKyLyMIsszDv5+MxOjtz39f1mQFm33vtdV+XZYwxiEgX6UyW1vbkNp3ruh5rmlr4eNlKlq5eA4CNzYihu3Hg3iOoLC/DsqzNnhsO2dTXVW9z3SIiIlJ8oWIXINInGfA8v8enJVNp3vl4Ea+9+wHllbXEymp... | [
"art gallery",
"post office",
"pet store",
"hardware store"
] | null | 0 |
math | grade-1 | select-two-dimensional-shapes | true | false | Which shape is a circle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACbCAYAAACao4KyAAAD5klEQVR4nO3avW4VRxiH8eccfwgRSLqgXECgoeciuF5yEdQ0hPSY1gYLHB8txWLhOP449pl9Z+ad56l2NdLoX/y01a6maZqOzuCfUzjZwPmE2c7tr+DpHvz5GJ4dwuro2zS9Pa49yzL36lfY/3A6v/xxCC9+mRWa7drJBt5/gY9n8PcprI/P5wORWcme7s2mAD5vYL25dGBWsgtT/06wrjvFRkloFpLQLCShWUhCs5CEZiEJzUISmoUkNAtJaBaS0CwkodmdvXn... | 1 |
engineer | grade-7 | identify-laboratory-tools | true | false | Select the dropper pipette. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AAA7SElEQVR4nO3de5hcVZkv/u/7rrX3rnvfEnIhCfcQuYW7EUm4hIAjIioQEBwRZhTROTPq+JuR4+M5zOjMHByHn8c5o+BvEEcJkkaIDorOb8QoMtyTYEJIgAQIuZF0+lrdtWtf1nrPH52OIeTSSbq7qrvX53nydFd1ddVbVf3Nrr33Wu8CHMdxHMdxHMdxHMdxHMdxHMdxHMdxHMdxHMdxHMdxHMdxHKe+UK0LcIbPnXfemQ2CoIGIcrtd7TGztdYa3/e7lFL2ppt... | 3 |
math | algebra-2 | domain-and-range-of-absolute-value-functions-graphs | false | true | What are the domain and range of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABpcUlEQVR4nO3de3Rc5X3v/89cdbckS7ZkGyRjjB1sLIPBEBs7mEKAQkJiJzkmbXNp6YU2t5OzVs8vq6vNabtYnKzTJl3NSXLSnJMTyFn9/dJyQmgxEY4JBjt2wFgYgc3NGFu2LOt+m/uePXv//hCjWL7O2PvRzEjvV/4gGs/+6NF+ZvZ8955nvuNzXdcVAAAAAE/4Cz0AAAAAYCahwAYAAAA8RIENAAAAeIgCG8AUixYt0t69eyd/Pnr0qObNm6eurq4CjgoAgNJBgQ1... | [
"domain: all real numbers, range: $\\{y \\mid y \\geq-3\\}$",
"domain: $\\{x \\mid x<-3\\}$, range: all real numbers",
"domain: $\\{x \\mid x<-3\\}$, range: $\\{y \\mid y \\geq-3\\}$",
"domain: all real numbers, range: all real numbers"
] | null | 0 |
math | grade-1 | select-three-dimensional-shapes | true | false | Which shape is a rectangular prism? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAP8ElEQVR4nO2d6XMbx5mHfzODY3DwAinqMiUeoiWZVpxjN46VteIk5UolFccu27LiRK7k2/5R+yllx4lkrR0nLm825cpudnPalV3rICWZEg/RlHgBBAhgMJir86FxzJCCeGBAoIH3+cLBoGemB3zQmHf67WmJMcaWDOCOBmRtwGIgiJYjIAFdCjAeBQ6GAGmpyNjHG82uFkHsnKe7gcC0xl8cDgEnY9xqgmg1sjZwOw88MIDPNEDesPgbJC3RynQp3FEAyNmAbLv... | 0 |
math | pre-k | fewer-and-more-compare-in-a-mixed-group | false | true | Are there fewer circles or rectangles? | "iVBORw0KGgoAAAANSUhEUgAAANgAAAA2CAYAAAClblcfAAAHXklEQVR4nO2dz1Pc5h2Hn5VWoN0FFuwkBEhsZmLiZDKAcwlpJwlNLr7YOdhNL3E5ldycU/MftKf4VPeUcsLjS9P4kHgmk5lOWji02ZkcDJ5M7cBkoIMhJDVmMewKtJJ62AgG9gfSrn5u3ufI6NX7edB8X72SVq8SlmVZCAQCX5DCDiAQtDKiwAQCH0n63YGxOAuAVcwDkEhlAZDPvOF3174ivARO8LTArI0l9PnbGAszlO5+5izA8EXkoXGUkQskTgx6GcczhNcBUfO... | [
" circles",
" rectangles"
] | null | 1 |
math | grade-7 | identify-trends-with-scatter-plots | false | true | Does this scatter plot show a positive trend, a negative trend, or no trend? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFhCAYAAABK/t0lAAAkG0lEQVR4nO3de3CU1eH/8U/CxQQTc6FRs6tf1wRYNGWyuIsFsSZgbaE2ITij2OKUe4FOa0Eq2P4BqWKL9gKKcrFWUKFllCqIozj8CqHoQCRbl0GUpQJBzAbBksUAiUjY3x/WaJpsSHafPM/u5v2acYZ9TpLziTqTDydnz0kKhUIhAQAAADBEstUBAAAAgERCwQYAAAAMRMEGAAAADETBBgAAAAxEwQYAAAAMRMEGAAAADETBBgAAAAxkWsFubGxUY2OjWdMBAAAAljC... | [
"negative trend",
"positive trend",
"no trend"
] | null | 2 |
math | grade-7 | parts-of-a-circle | false | true | What is \line{LM}? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADICAYAAACdx5VnAAAnM0lEQVR4nO3deXhU9aHG8XeyTFYCSSAEgoQs7CEssi8SlqAoW4tWq1gUXFqXC20Fl0u9tre9rlVR2ypFRZQKuKKi7AkCpsiekAiBkLAFEkhISMiezP0DOCZll4RzZvL9PE+e5/zOOTPnnTB/vPnxmzM2h8PhEAAAAACX4GF2gGvBZrM12HPz9xEAAACspFEUfEo4AAAAGgs3swMAAAAAqD9uNptNiYmJ5xwYOHCgWrVqdc7+rKws2Ww2vfnmm5o7d65sNpuqqqoaPOi... | [
"diameter",
"chord",
"radius"
] | null | 2 |
math | algebra-2 | linear-functions-over-unit-intervals | false | true | How does h(t) change over the interval from t=1 to t=2? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABug0lEQVR4nO39e1Qc95ku+j99444EAgkQGCRZlmwQ6H4BhIQix3Zsx9tSkpGTkzie42TtZOc2OevMrJw52TkzWY5XfmsmycRjZzvZk7Gd+c3ZmWhie8aSkSJbgDCKhYQACSRLCElAg7g0NE1fq6q76vyBmoB164b6Ut3wfP7RoqEfXlV1V79dvP0tk6ZpGoiIiIiISBdmowsgIiIiIppP2GATEREREemIDTYRERERkY7YYBPRNE888QQOHjx42+99+OGH2LFjBxRFAQD... | [
"h(t) increases by 4",
"h(t) decreases by a factor of 4",
"h(t) increases by a factor of 4",
"h(t) increases by 400%"
] | null | 0 |
math | grade-8 | identify-similar-triangles | false | true | Are these shapes similar? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAC1CAYAAABlJoioAAA4GUlEQVR4nO3de3zO5R/H8de988HMsBk5H0MUch425jiGOWyUQpGQHKOSUnIsEbWkX5RCbJjMKedjkUObUw7TIjmzsYMdf3/cuVlWOdzbvcP7+Xh4bLu+9/29P9+15u26r+/1MaSnp6cjIiIiIiJmYWXpAkRERERE8hIFbBERERERM1LAFhERERExo1wZsFeuXImPjw9ubm4ULFgQb29vdu3aZemyRERERERyX8AeP348w4YNY+jQofz222+cOXOGTp060bJlS86dO2f... | [
"yes",
"no"
] | null | 1 |
math | grade-6 | changes-in-mean-median-mode-and-range | false | true | Look at this set of 10 numbers: How would the mode change if the number 4 replaced one of the 3's in the set? | "iVBORw0KGgoAAAANSUhEUgAAAS8AAAAkCAYAAADYbryvAAAG7klEQVR4nO3ca2xbZx3H8e+xndiOXTv3JnFujZu4aZq22ZbRNawNAwEaUE0R1YCK8QJNVPAClXcIIaTB0BCXgZAAIYYErzpWWLULlLWDdQO2pGualmZJc3OSOY2TNM29sePL4YXnNl6YtjXn+NTJ//PycXJ+9j+P/nnOOY+PoqqqCkAU1BAQBxIjQghxZ1AAEyg2wPLOkKqqqhoCwga+MSGE+KCsiSZmIoo0LiFE5ggDUTCp0riEEBlGDYOJmNFvQwghPqQYmOTivBA... | [
"no change",
"decrease",
"increase"
] | null | 2 |
math | grade-2 | match-analog-and-digital-clocks | true | true | Look at the analog clock: Which digital clock shows the same time? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABSxElEQVR4nO3deViU59U/8C/rAAozKIu4zYAraGRc4h6WGLMZFWOSZmvANkvbNwu2Tfu2TSM2yZu3Td+KWdq0Jj/J1qRJjKgxi8Y44haMwUEjiBEYFAUEwwwozDAsvz+QCcss92zMAN/PdXFlmLmfZ06QuThzz3nO8eno6OgAERERERG5hK+nAyAiIiIiGkyYYBMRERERuRATbCIiIiIiF2KCTURERETkQkywiYiIiIhcyN/TAZDnGVvaYDS0osXQihZDG1oMrTAaWuH... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA5AAAAEJCAYAAADiusiGAABc1klEQVR4nO3deVzTV7o/8E/YwiIkKIu4JeAKWoj7Vllq1bZWxW7TzYIz1Vl+2sGZ2rkz7VQ6bW/vTHtH7DLTqe2V1nba6SZqbavWiri0WMWAFcQKBDdEsCSgkBCW3x9Iypbkmz2Ez/v14iUk53vyFBObJ885zxG1t7e3g4iIiIiI7EIkErk6BCKH8XJ1AERERERERNQ/MIEkIiIiIiIiQZhAEhERERERkSBMIImIiIiIiEgQJpBEREREREQkiI+rAyDX0ze3Qq9... | 1 |
math | kindergarten | one-more-with-pictures-up-to-10 | true | true | Count the bears in this group. Which group has one more than the group you counted? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABmCAYAAADxjOYpAAAgn0lEQVR4nO3daXCd133f8e/z3AvcDcDFDmIjFoIruO9aSG2kLEuyHMtWRo5jJWnW6bhp46RT15lmkqmTOtNxkknSdtIm47ip49iWJUeSbW20JUqkRJDijpVYCBAX+w7cDbj3OX1xIZAQSYuSQOlC/H1mOHhwn+Wc+7z64fCc/7GMMQYREREREVkS9kfdARERERGRjxMFbBERERGRJaSALSIiIiKyhBSwRURERESWkAK2iIiIiMgSUsAWEREREVlCCtgiIiIiIktIAVt... | null | [
"iVBORw0KGgoAAAANSUhEUgAABOwAAAB+CAYAAACXpI7eAABgWUlEQVR4nO39d5Rc133g+373qVzV1dU5ZzRCo5GITIJgBCmKQRJJZSs5yb7zJM1YnrdmLD3P8l22NfbcZ4/H1rzreG05SFakLVEUA5hAIgciNbob6JxzqBzPfn+cRgFNAIwNoBr8fdbC6gqnztl1Tv2w9v6dHRSgEUIIIYQQQiwJrTVjSeiKQigDaaltCyGEEOIt2BX4bbDSC+VO6zWFJOyEEEIIIYRYMmMJzZHgzS6FEEIIIZajHflQ5gT7zS6IEEIIIYQQt5I... | 1 |
math | grade-3 | scalene-isosceles-and-equilateral-triangles | false | true | Is this triangle isosceles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACpCAYAAAARMkpIAAAmXklEQVR4nO3da1hU9f7+8TcyjqCoqGhiaoWIioAgamjKqNjZ8oCHFC2tdhlqltUuy9yZWenW8pDZrjwswBOessIyMyzLsDSjLVluR41JEX9TQIqKcvg/aMtl/93BA7CGmft1XT75zri+N10+uPm01vp6lZWVlSEiIiIiIhWihtkBRERERETciQq2B3A6nfTu3ZuwsDB++ukns+OIiIiIuDUVbDeXnp5O+/btSU9PJysrizlz5pgdSURERMStqWC7scmTJ9O7d2+OHTv... | [
"yes",
"no"
] | null | 1 |
math | pre-k | represent-numbers-with-pictures-up-to-5 | true | false | Which shows 1? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAPxElEQVR4nO3dW2wc12GH8e/M7C6Xu8vLkqJEUhRFyRIl6mJF8UV24hhpC9QvDdCmQdEGSYOiLwGKIgFatA9J0BRoAxRBG6MPDeqkCJqmaIEmbdEESN3YsetEsSXbsWzdLVoUSZl3kcu932ZOH1ZWRIu+c/dQ9f/3IpEzO3v24cOZ2w6NtdbOVWG8CLkA6hYRaZKIgQ4f9iZgWwzMXMXak1nXwxJ5/znWCZFLxcYPAzHYl2zUKSLNkQvgYgFmq/ByEbxsvbFA8Yk... | 0 |
math | grade-2 | select-figures-with-a-given-area | true | false | Which shape has an area of 5 square units? The shapes are made of unit squares. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAIYAAACGCAYAAAAYefKRAAACpklEQVR4nO3dv2ocVxjG4XdWfwrHjrqEXEBkSIqQyuDbyCX4HpIqTVz5tlKkcBNSJCDZvZXSki2wrOWkGASBvOAmoxHa56l2GJhvGH4cpjmz0xhjnF0lry+Ti21yPcIO2p+SR3vJ1w+SLw+T6ezDGC/P174t7pInnyf7ry7ng68Ok8efzdWwey62ycn75M1VcnqZbM6v5xOi2G2P9uYGkuTdNtls/3WC3XbTwMeRbNa9Fe4qYVAJg0oYVMKgEgaVMKiEQSUMKmF... | 1 |
math | algebra-1 | identify-linear-quadratic-and-exponential-functions-from-tables | false | true | Is this function linear, quadratic, or exponential? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEqCAYAAAAvYSeKAAAbFUlEQVR4nO3df5TXZZ338RfDAIKAwyIgFiQ/jF9GYSrFaOwR0bTYexMVhnYQTVYh7bTLylEMbzVJt+E2HDz+KtzmBB5KV4/WQWSp0FpS2dpS79QiUbIfSpA5ICgM3H+0zb2zGLLLBcPg43HOnONc3w/X9R7/es73fL6fabf12x13pQ04rPrpbPvX41p7jL122KlvtPYIAAC0gorWHgAAAA4lAhsAAAoS2AAAUJDABgCAggQ2AAAUJLABAKAggQ0AAAUJbAAAKEhgAwB... | [
"quadratic",
"linear",
"exponential"
] | null | 1 |
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 | [
"iVBORw0KGgoAAAANSUhEUgAAAKQAAACkCAYAAAAZtYVBAAAYyUlEQVR4nO2d6XMUR5qHnzr6lrqb1gGIywKBhITBljnGltcYM2CwB8d6YmK8MREbG46Njf2wX/Y/2T9gNyZiwxM7O4dnw0d4fSz2YDDYMqdAQrcAIcSho9VSd3VVd1Xth1K31EggGVpS0conQgFqVWVXVv3qzcw3M99Xsm3bvmtAbwomTcjaCATLhipBuQLbg7DWC9Jd3bZbEyt9WQIBHAiD2pNyflnvhfqQo1aBYLmYNKErCcMGdKdATmSdPwgxClaCcsXRHsC... | 2 |
science | grade-3 | identify-materials-in-objects | false | true | Which material is this slide made of? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAA3UElEQVR4nO2dd5QkV33vP7eq4+S0OWqVdoV2pVVaBStjEMZgW4AAm8ezzSEY+xH9ZBnM4RlsGT8sY0CARfADW3CA84yxDQ+bJCRAIAshAYpIK20Os7M7M7sTejrUfX/87u2qjtNppntm63tOnZnp6a66VX2/95d/F0KECBEiRIgQIUKECBEiRIgQIUKECBEiRIgQIUKECBEiRIgQIUKECBEiRIgQIUKECBEiRIgQIUKECBEiRIgQIUKECBEiRIgQIUKECBEiRIgQIUK... | [
"rock",
"plastic"
] | null | 1 |
math | grade-1 | purchases-do-you-have-enough-money | false | true |
A butterfly stencil costs 91 cents. Do you have enough money to buy it?
| "iVBORw0KGgoAAAANSUhEUgAAAvgAAADECAYAAADqBVUcAADMNElEQVR4nOzdd5xU1fn48c+dvlO3915ggaUjVUCqYMMea+zGNJOoURPz0/Tkm2qKLaYaS0zsDRFBBRSQXndpu8v2vjOz08s9vz+WGVl3gV1AQT3v12tfyp2ZW87cufPcM895jiKEEEiSJEmSJEmS9LmgOdU7IEmSJEmSJEnSySMDfEmSJEmSJEn6HDnpAb4zLCha5mb8yh6cYZn9I0mSJEmSJEmfpiEF+C81h/lRVeCogfu7HRFqfSpbXVFu2OQ74R2UJEmSJEmSJGn... | [
"no",
"yes"
] | null | 0 |
math | pre-k | count-scattered-shapes-up-to-10 | false | true | How many rectangles are there? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAF4CAYAAAAheo2mAAAJGUlEQVR4nO3dIY5TexiH4dObGhw7qEeRkC4AxQqwqJFo3Ci2gcKzANZQNQbflZxrS0LuTGjnfu07z+Ob/OQrvvPvZl3XdQEAABL+mR4AAABcjsAHAIAQgQ8AACECHwAAQgQ+AACECHwAAAgR+AAAECLwAQAgROADAECIwAcAgBCBDwAAIQIfAABCBD4AAIQIfAAACBH4AAAQIvABACBE4AMAQIjABwCAEIEPAAAhAh8AAEIEPgAAhAh8AAAIEfgAABAi8AEAIETgAwB... | [
"3",
"9",
"7",
"8"
] | null | 3 |
math | algebra-2 | domain-and-range-of-radical-functions | false | true | What is the range of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABl8UlEQVR4nO39fXxU9YH3/78nM5P7hIQEEm5MEBAsN4mgwYIguni3WnWh22L7ba3XZdu1V6179Xttr1+/+6jd3dav271ad39rbbfbXbdqd3+Pbu2qrWhAqAg0qECEQKIiRgiEmDtyN5O5OXNmzu+PdFLCjSRwPkyGvJ6Ph482Q847n5wzc+Y9J59zjsdxHEcAAAAAXJGR6gEAAAAAlxIKNgAAAOAiCjYAAADgIgo2gBFmzJihnTt3Dn99+PBhTZkyRS0tLSkcFQAA6YO... | [
"$\\{y \\mid y \\leq 9\\}$",
"$\\{y \\mid y \\geq 9\\}$",
"$\\{y \\mid y \\leq-3\\}$",
"$\\{y \\mid y \\geq-3\\}$"
] | null | 0 |
math | grade-3 | identify-three-dimensional-shapes | false | true | What shape is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACsCAYAAABB/9v7AAAg7klEQVR4nO3d6Xdb52Hn8e+9uFi5gAuofY8kaiHFKFVn3DRLW88kTZ26tuPYlupa7jlz5syr+WPmxZwzZ9pUdmrJS2W7qmun6XFap87EqZWaErVQqyVaC0UBJEASwAVwl3kBQSIpWaYkkFj4+7zSgUDyORRw9MVzn/s8hu/7PiIiIiIiUhVmrQcgIiIiItJMFNgiIiIiIlWkwBYRERERqSIFtoiIiIhIFSmwRURERESqSIEtIiIiIlJFCmwRERERkSpSYIuIiIiIVJF... | [
"pyramid",
"cone",
"rectangular prism",
"cylinder"
] | null | 1 |
math | grade-4 | is-it-a-polygon | false | true | Is this a polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADvCAYAAADIM6M5AAAXy0lEQVR4nO3dPWxUZ7oH8GdXKzkFyO5soHAq2xVeCQhd+CiCUgR3UIBo8qFQ3L03RdjmJkWSZkmx2TSg7N0UCIqwlR3paqEwkGq9EOk6lYcqLszandGksKvc4vHJjIkBf8zMOTPz+0nonHEc+w1g5T/Ped7n/c3PP//8cwAAAC3x27IXAAAAvUTABgCAFhKwAQCghQRsAABoIQEbAABaSMAGAIAWErABAKCFBGwAAGih35W9gL6zuhSx+H3E0ycRPz6MWKtHrNR+/Xk... | [
"yes",
"no"
] | null | 1 |
science | grade-3 | identify-vertebrates-and-invertebrates | true | false | Select the invertebrate. Hint: Insects, spiders, and worms are invertebrates. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAEAAElEQVR4nOz9V5Rc5bW3jz4rVY6dc07qVivniJCQSCJHAzYGjG2MsXHeTtjb2djYxoDBATCYYLLIQRIC5dySWmp1zrG6cq6VzoX87f+NvzF8Djf/M8Z+r6rWqDUqjKfmO+d85/xN4XDUNJud4Jb43/W/6/+VK65DdxImc+CXYY3v3HXxf8H93/X/9uWWoNl57nFC/3+ui/8L7v+u/39Y/4dT1fx/rsn/7oWbllUQiWYIx9OIkoKhQDiWJRLM8P0ffI6Fqxfy0+9... | 1 |
science | grade-2 | classify-fruits-and-vegetables-as-plant-parts | false | true | People use apple trees for food. We usually eat the part of this plant that protects the seeds. Hint: A plant's fruit protects its seeds. A plant's stem holds the plant up. Which part of the apple tree do we usually eat? | "iVBORw0KGgoAAAANSUhEUgAAARoAAADKCAYAAAB6+o8hAAEAAElEQVR4nOz9Z7Qt6V3f+36rZs2c85xrzrlyXnuvtXPo3qF356QOaqklIQESYMDggw/H+OCL7YONfcA+xweDbTBBCJCEBJJasVudw85x7b1yzmnmnGvOqrovxPX1GPa4Ly3GuP69qldVr57P+D//J5Twy7/8yxr/M/8z/zP/f5Hf/d3f/bF8VwL4x7/9n9AbQJMgX9rH6myTLWzTVEooWo1AwMMPXv8eq6sruN1O1laW2Nxaw2E3k00WeOm5LxDP5LkxdxvNDrV2hUK... | [
"the fruit",
"the stem"
] | null | 0 |
math | grade-2 | match-digital-clocks-and-times | true | false | Which clock shows one o'clock? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMIAAAB5CAYAAABr7P6HAAAGt0lEQVR4nO3dQWwbWR3H8a/TNkIl6zlAWRbFQj0AovZ9teVSVbtLKsSlSZwjHLZHFIdF3EhxLkhIbBKpp02Q4Fa3SQ4g1KDdPdLDnu1Iy3JBjkRpAclJNyVp0+HgtTcpUmKPPTNO8/1c2lE87/9az8/zMu/NOBOGYfhgD/62A9v78CxEeumdzcArZ+Bb5+HVYcg82A3Dj7fS7paUntezcPbTnebGa8PwnS83UyK97Lb34ZPP4B978NcdGNp61vyBIdBp8sqZ5jE... | 0 |
math | algebra-1 | identify-direct-variation-and-inverse-variation | true | false | Which equation shows inverse variation? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAADAAAAArCAYAAAA+EwvfAAAEE0lEQVR4nO2YWyj7fxjHH7/ktF1s5NiUxfZVU1aS1G5IKYeIm92s5sINxSgpTKRI3G3FhRunEoq4IYosKWwhpZC5EEP6ag5jxvt/5ev3bfg5ZN/9y6u+F3s+n+fpeT/7nAMAgP7H/BE6ge/yK0BofgV8l/39fcrNzSWJREJKpZIGBga4NpfLRTU1NcQwDEVGRpJer6fLy0t+AAiMWq1GeXk5WJbFysoKQkJCYLPZAAAlJSUoLS2F1WqFzWZDSkoKdDodz19QASz... | 0 |
math | grade-8 | identify-linear-and-nonlinear-functions-graphs-and-equations | false | true | The graph shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABm+0lEQVR4nO3df3iU9Z3v/9c9P/I7kJBgEpEEEEWDCYqCBUFwcdXVagttV7uXbd3Ldk97atvd754913730l6nXY9Xv9euu9/aH6en255ad/d7eupWrb8ixYJAoYpEDCZYRYSQAPkxkElmkpm55577/v4REomAJHB/mAx5Pq4rML/u17xz3zP3vOeTz9xjeZ7nCQAAAIAvAtkuAAAAALiQ0GADAAAAPqLBBgAAAHxEgw1g1I033qhnnnlm9Pyzzz6rK6+8Uq7rZq8oAAB... | [
"nonlinear",
"linear"
] | null | 1 |
math | grade-2 | identify-lines-of-symmetry | false | true | Is the dotted line a line of symmetry? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAAOe0lEQVR4nO3dfXAU530H8O+zB5IOcSAwRhgnyIlfphQQthUXGZtxiKeZZKZpE9eieZvpNLRO09SZOu0YzEvmJjZ226TjZjJuEs+4/aOkjStKy3Ra1y55G+AkC2w1aIwN2DEyIKSTbUDv0t3ur38IZVxGfiTd3d6zv73vZ8YzGmHtfker7+7ePvvsGpBzIvLAM888s+n48eObAKCxsfHQ1q1bDxljnnadrdJ5rgMQRRkLQmTBghBZsCBEFiwIkQULQmQxz3UAmpRKpYb... | [
"no",
"yes"
] | null | 1 |
math | grade-3 | identify-multiplication-expressions-for-arrays | false | true | Which expression describes this array? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFeCAYAAAC/0mhdAAAmKUlEQVR4nO3dUY+q2PL38TrP+39dtCSSkBgT7Q6mO+pc4IVeaIMg8L/wzHPcu2mxcMFa4Pdzd3pyZtg1lfRvikWt/1RVVQkAAAAAI/6f7QcAAAAAxoSADQAAABhEwAYAAAAMImADAAAABhGwAQAAAIMI2AAAAIBBgwrYnpfYfoRBoV466/VF1uuL7ccYFHoMAICfBhOwoyiX+fwsUZTbfpRBoF46RVHJZPItk8m3FAWr4R9BjwEAUG8QATvLKvH9bxER8f1vyTIC0D3... | [
"4×7",
"7×5",
"5×4"
] | null | 2 |
science | grade-8 | identify-rocks-and-minerals | false | true | Gabbro has the following properties:
coarse-grained texture
no fixed crystal structure
naturally occurring
solid
not a pure substance
not made by living things Is gabbro a mineral or a rock? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAACzAklEQVR4nOz9Z4xl55nnCf7O9d67iLjhbXqfJJNeIiWVbNmu3qpFLVA7Vdtbjd2Z/bD7YYDGFBr7oRuDRc1itrsxmEYPuqu6pHISKTqJTlImmZlkZqQL7+N67/2555y7H86NI3G6R9ptiiIlxQMIimRmRt6IuM953+f5O2EwGAw4ruM6rv9s6T7tF3Bcx/VZruMGOa7j+il13CDHdVw/pY4b5LiO66fUcYMc13H9lDpukOM6rp9Sxw1yXMf1U+q4QY7ruH5KHTfIcR3... | [
"mineral",
"rock"
] | null | 1 |
math | grade-3 | parallel-sides-in-quadrilaterals | false | true | How many pairs of opposite sides are parallel? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAeIklEQVR4nO3df3BU9f3v8dduDssmLMkmIbuaRn4ohX7xTvmOznzpDM7IH5mWHwkEU+arrdcW+xXUUZk7871/3X/vn/cfsGOFFul4te0MtaJQQU0tfCu9ogVBhYpK8QfVMSEhCSFsks3u/QPnnOzZEPJjd8/n7Hk+/jqfY072bdg/Xvuaz54TymazWQEAAAAoiLDXAwAAAADlhIANAAAAFBABGwAAACggAjYAAABQQARsAAAAoIAI2AAAAEABEbABAACAAiJgT8Opdwf... | [
"1 pair",
"2 pairs",
"no pairs"
] | null | 1 |
math | grade-8 | rotational-symmetry-amount-of-rotation | false | true | This image has rotational symmetry. What is the smallest fraction of a full turn you need to rotate the image for it to look the same? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAAkgElEQVR4nO2deZhcZZX/P+fe252EhB2VAA4QWYSQ7uqu6uwJycOi7IoGGMVxBhAER0FnHHdwAFfGEZQB0Z8oKsskKCgYVs3WiSRd1V0dCCoJ+xpkIISQkK573/P7o5tYVV3dXcu9tXTez/PwR733XQ5d+dZ9l/OeAxaLxWKxWCwWi8VisVgsFovFYrFYLBaLxWKxWCwWi8VisVgsFovFYrFYLBaLpSR0dcvBfjJ2k5+MbfGTrT+otT2WvyO1NmBnx0/GPg5cB+wyUGR... | [
"1\n10\n of a full turn",
"1\n11\n of a full turn",
"1\n8\n of a full turn",
"1\n12\n of a full turn"
] | null | 0 |
math | grade-3 | identify-rhombuses | false | true | Is this quadrilateral a rhombus? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEPCAYAAAB4ALMPAAAhAElEQVR4nO3dbXSV9bnn8V92QiQkPCYmgSDPoCA0AZWKSKFWi9SWggeBzqwizJo3Q6U8CHYYOCpmKaUIYsGzZq0zC5jO6WjAAos6x7F0KpTiUTnl0QAC4SEGwlMISEIwgWRebOC/YxLI3vu+9/++s7+fN17X3ve+/5f65rey9r6vhLq6ujoBAAAAcETA9gAAAABAS0LABgAAABxEwAYAAAAcRMAGAAAAHETABgAAABxEwAYAAAAcRMAGAAAAHETAdsr/nCZtmGd7CgA... | [
"yes",
"no"
] | null | 0 |
math | kindergarten | fewer-and-more-compare-by-counting | true | false | Which group has more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAALsElEQVR4nO3d229U1QLH8d/ae2Z6gbahNzzhYlIox2i4RIIKJpJIBMEUEjEh8fgn8GCCLyZE0Rx94t0HfTImagga4EUwEIwJiSWRiygUKIakhGtLnULLXPZe52EsNmJPZ+jM+s2a+X1esEFn/7LSb8fpJLONtdbeyAKXx4GxCMhbiEiFJAzQEgK9zcD8FGBuZKztT7NnidSf51uBxKXxwhf/SgH/nlOoU0QqYywCBu4D17PAxXEgSOcLf6H4RCqvJSy0BgD3IiC... | 1 |
math | pre-k | count-corners | true | false | Which shape has 3 corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAFuUlEQVR4nO3dz24bVRSA8WM7CaI0VALxp9tKwCNU4jFYseWReBEkpEJFs2jpJlFWyaKVSpI1ZtNkbMeZxp57WUwjgYRE4rn3nHNnvt+qUZTm5s5X1/aJ5o5ijHF6LXK6FJk3IusoQGdbI5HdichX90S+2BEZTd/FeDizXhb67PHHIlsny/aDhzsi33zUVgh0NW9E3lyK/Hkt8sdSZDxbt58gMqS0O2mbEhFZNCLj5h+fAFK6aWoVRca2S8FQEBpUEBpUEBpUEBp... | 1 |
math | pre-k | cubes | true | false | Which shape is a cube? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAQdUlEQVR4nO2dW2wb2XnH/0NyhkNSEnWjSEq+yF57XWyAddrd1gm66LZN0AApNgWKpEDRbh/Tpz4k2Jc8BQEK9K3tcxH0Ie72JUAKJGiBIl4XNZzN2uvd+LK6W7YlSxYl2STF+515mDnDu8QhhxrynO/3YnlIkZ/lH4++Oec735Gq1Wo1UgAeZ4BkGShVQRBDh0sCxp3AZS8QVAApkq9W7ybsDosguufaBODayGh/CSvAFZ9mNUEMG8kysJYG9grAegZwJEraAyQ... | 1 |
science | grade-3 | compare-properties-of-materials | true | false | Which is softer? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAAl3klEQVR4nO2deYwc13Wvv1p6nZ6Vw00kJcukZFKxSS2kn55lxwFECQniwA+WZMB2gDhKIDj/WBYUZBMgJbFhJQa8JAFiJAgc2ZZlB7EMMS+W/SLYsChTiSVRFAVL4iKJFHcOZ6Znenqv5bw/qqunuqc3zvRyh64PaPRMdXXV7apfnXvuuefeq704L/KeIRg2CAnpKwsOHM3B+TKMm/DBMW+7HgoyZFAMG/CeIe/vrLO4XQ8FGTJIfP1ZsrjNHExRloe4LqVcjlw... | 0 |
math | grade-5 | compare-fractions-and-mixed-numbers | false | true | Which number is less than the one shown? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAAd0UlEQVR4nO3db2xTd77n8Q/EPjG9sRNCkiVNm9A/aWGdEEpzA50KszMTXy0xVYvncm+iy6WVLlzdlaruStN51j6aPqvQrqYjrXQp0twyo0nv5qZMtwmrwe1uzXQW0kBJIJtO0zIEmnom/8BOWuxjh+yDYxs7f5zEOfb52v68HgFOjo94i+Mfjn/fs2F+fn4eRERERESki41Gn4De/ssFLzad+jnO3rph9KnQMthIPjaSj43kYyOiwrUhn97BPub14PQX/w/YsAEPmEz... | [
"4+2/4",
"5+2/4",
"4+1/4",
"3+2/4"
] | null | 3 |
math | pre-k | fewer-more-and-same | false | true | Are there the same number of snowmen and carrot noses? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEECAYAAAASx0PMAAA14klEQVR4nO3deXhdV33u8e/aZz5H82BLsmXJlmdbdmzHgYwuZCAMLYGWQJkSKL1PoSW0N2lv+5SSwuXphbYMLS1QCJQw9HJTEhIgKSEDU+LiDHbiebYmW9Y8nXnY6/5xbFmKZFuyj2PJfj/PA5HOPnudtfV78uw366y9lrHWWkREREREpCCci90BEREREZFLiQK2iIiIiEgBKWCLiIiIiBSQAraIiIiISAEpYIuIiIiIFJACtoiIiIhIASlgi4iIiIgUkAK2iIiIiEg... | [
"no",
"yes"
] | null | 0 |
math | kindergarten | circles | true | false | Which shape is a circle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACbCAYAAACao4KyAAAN6klEQVR4nO3daXAUZRoH8H/PZCbJJJNkcpJACAkh4QyEcERUWEEUqLB4sW4toHhrIR6rruuBZXniSnmsgrKuFC6i1KqlG7Rkl0vK5ZQcBAgkhBwIk0kIk5DMTCZz9X6I7CqLYJ9v98zz+5Li6Pd5qPnz9kzP229zPM/zDh/Q4AF6gkCAByGSRXGA1QgMswAZZoBz9PH8vm7WbZFwNjkBiDrm6f9FphkojOtPISFS9QSBOjfQ6gPqPYChO9D/BxQyIiersT9TAOA... | 0 |
math | pre-k | rectangles | true | false | Which shape is a rectangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAHH0lEQVR4nO2dTW8TVxSGj5PAgkIrVVWr/oAWqeq2YtN/0p/SXxBAsCBs+FgRQIEgwQKCBAIhQEiwIuLDaYgTUJRJUeJE2I7MdDLThQFBiBOPfe+595zzPqv4+yp64oyv3zNvpSiKYjklerVB1NgkygoCYGBGKkQHhol+2Uf0016iyvL7onj8LvSygGYOfUs0MrvRufDzXqKD33QsBGBQGptEMy2iJCX6Z4No6F3WuQGSAZccGO44RUTU3CQa2vzsBgBc8tGp/wq... | 1 |
science | grade-5 | how-do-balanced-and-unbalanced-forces-affect-motion | false | true | Ivan uses his umbrella on a windy day. Think about two of the forces that act on the umbrella:
The wind pushes away from Ivan.
Ivan pulls toward himself. As Ivan pulls on the umbrella, what is the direction of the opposing force? The text below describes a pair of opposing forces. Opposing forces act on an object in op... | "iVBORw0KGgoAAAANSUhEUgAAAbAAAAGcCAYAAAC4IPVnAAEAAElEQVR4nOz9W5IkyZIliB1mEVUzd4+MzLyPQvU0YYYGwCp6PfjrvfQKgD9spPfR1AQC0dS7bkZmRLiZqYow4+Mwi4qZe+Stmp65WR+lSZHubg99yIMfhw8zy3/+z//Z8e/Hvx//fvz78e/Hvx//O4//8l/+y29y3QoA/+//z/8L7o7mBqhAVCFrRa0VUgq0FgCAdxtfFBEUEagqsPfxuvuhDzv87jUXvn6cJf7edl5XBKYCqMDkOJ9vDTBHaQbJn91R4lI7FC7HdUx... | [
"toward Ivan",
"away from Ivan"
] | null | 1 |
math | pre-k | name-the-solid-shape | false | true | What shape is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAENCAYAAAA1yBIEAAAa/klEQVR4nO3dXWxc553f8d95nRfO8E2UTG0S0d7A9loxulAiNN7CdbFFiibxxWJ70QCLXaBAA+z1XuzlAr3ay93bBthctTe52C6KIpttE6CIW2C1rWQ3hS3FsmuZTmzSpiiKnDMv5/XpxeEMZ/gmUnrIGZLfz42so+HokUUBX/75nOc4xhgjAAAAAFa4414AAAAAcJ4Q2AAAAIBFBDYAAABgEYENAAAAWERgAwAAABYR2AAAAIBFBDYAAABgEYENAAAAWOSPewHnUby... | [
"cube",
"cone",
"cylinder"
] | null | 2 |
math | grade-5 | adjust-a-budget | false | true | This table shows Naomi's October budget. What could Naomi do to balance her budget? | "iVBORw0KGgoAAAANSUhEUgAAAWMAAACeCAYAAADnuWuSAAA/HklEQVR4nO3deXwM9//A8dfu5pRETokS7IocGhFpJUTd6aVFK1qt8i1KaauuFlXXV4mrx5c6Wr+KaqnSKqq0dabuWxCCIIKIBrnv7G52fn+k2VqbYzeSWvp5Ph4eHjvzmc+8Z+a97535zGxWts37gIQgCIJwX8nvdwCCIAiCKMaCIAgWQRRjQRAECyCKsSAIggUQxVgQBMECiGIsCIJgAUQxFgRBsACiGAuCIFgAUYwFA62i/XkyqW2N9ilTgKO/Pc6POWL7iE2N9m0... | [
"spend only $20 at the movies",
"increase income from yard work to $25",
"spend $10 less on school supplies",
"spend only $30 at the book fair"
] | null | 3 |
math | kindergarten | am-or-pm | false | true | Jack is getting out of bed in the morning. The clock in his room shows: What time is it? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACwCAYAAAA16xkbAAAQ9ElEQVR4nO3dX2zdZ3kH8Oc4DknqQ0pXIAdaKsCnEqO0dsQ2sdkpu2ByLhCbkqFS0Eg1td0ad1JbCacXTRAOF9jSUi6aSCUXNGFpGWoybROSzZREaxMK6jQSraNU2OF/6zBKW/WcJM4fexepHfs4sc/P53Xcc/z5XJ04fs/v/SW++J7Hz+95c+Pj4+MBAAAk0bTYGwAAgEYiYAMAQEICNgAAJCRgAwBAQgI2AAAkJGADAEBCzYu9gfk6c+ZMHDhwII4ePRovvfRSvPj... | [
"8:00 P.M.",
"8:00 A.M."
] | null | 1 |
math | grade-4 | nets-of-three-dimensional-figures | true | true | Which figure will this net make? | "iVBORw0KGgoAAAANSUhEUgAAAMQAAADNCAYAAADnqd+jAAAR+UlEQVR4nO3df0xTd78H8DcFChSFI84O6kQmc/LIdBfvqD4s+hghbM6rnu5uQRN29TEmA5M928IkerPMuTy5WxBj3PIoS4yb95IIyZRR7zKCgte4bNCxMX+UO6Y4EMGCP1pQWijQ3j+4lMNAaEtLsX2//uT0nH5CeHPO95zP+X6D7Ha7HUQEAJD5ugCimSTE1wVMt6CgIF+X8NgIxIuHgDpDMAyuCcTfV8CdIQDgta9TfV3CjPeV+KOvS/CJgDpDEE2GgSCSYCCIJBg... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUAAAADNCAYAAADJyakYAAAmiUlEQVR4nO3de1hTV94v8G/CLYLCBitirECloK9oFVtixymSqY5OL9Yw0x5xao/a6etg5yLU6mk7vgpOn3FeLwU7U3WmreI79AjPqeWinXoFUjutBBW84AgFCShXFQII4ZqcP9JsQQOEZCc7ZP8+zzOPz7CTvRcm/brW2mv9tkiv1+tBCAEAiEQivptA7EjMdwMIIYQvrnw3wN7oX3jz0eCAODtB9QAp/EaG/r6IsxNcDxAAXs6K5LsJDu9zRSHfTSDE5gTVAyS... | 0 |
math | grade-1 | open-and-closed-shapes | false | true | Is this shape open or closed? | "iVBORw0KGgoAAAANSUhEUgAAAQkAAABkCAYAAACVdcVUAAAMy0lEQVR4nO3de1zUdb7H8ddwHQKVw7KGeaEMXQQvgFIi0aqVWqaetBVFcb2UaWaHTrapoZngYmc9qx0z75cWQXEN1zVRyz32SEVNxRUFMY3TeDnyQERACOQynD+IWT0ryGXm9x2Gz/NfBn7v+YM3Xz7z+32/uurq6mqEEKIOdqoDCCGsm1WXxMWMk5QUF6mOIUSr5qA6wIMUFuSxaM4Yzp35FoAnfHrh1zuE3kG/pkevp3ms05OKEwrReuisbSbx/YXTLHhnFLduXq/... | [
"open",
"closed"
] | null | 0 |
math | grade-2 | compare-sides-and-vertices | true | false | Which shape has more sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAALgAAAC4CAYAAABQMybHAAAFHklEQVR4nO3ZP08bSRyH8a/Nn0j5c9fd6V7A5Rr69HnFiIIKpUVK7SbJSZQmEhWLCQav94o97hAEY69nd2a+83yqIEtkbD/YM/MbNU3TnN9Kf19LVS0tGgHZ2h1J73akP19Lv+9Lo/N503y+jL0sILwPv0i7367bH/7Yl/5609YP5KqqpS8zaXorfb2WxpeL9gHihoN3O23LknRVS+P6wQOAg/uW7xppHHcpQL8IHNYIHNYIHNYIHNYIHNYIHNYIHNYIHNYIHNY... | 1 |
math | grade-5 | nets-of-three-dimensional-figures | true | true | Which figure will this net make? | "iVBORw0KGgoAAAANSUhEUgAAAM0AAAC8CAYAAADbwioNAAARoUlEQVR4nO3df2xU5Z7H8XeZwljLtEUcyBY6KJWyI9WqZIfdgEGa4YcuSP/QUE12W/fCzWavlDZ3KXeJoOBFl8a7tcXdbCx6iybcEv2j/FgFmQBRyC694SpaUq3yY0+BDT0ihUNvPdBp94/SWkArA3PO8zDzfSX+QaNzPhA+PnOeH+ek9Pb29iKEuGHDVAcQ4najVWls22b37t2kpKQo/2ffvn2q/ziEprQqzYYNG5gzZ47qGADMmjWL+vp61TGEhlJ0uacxTZPc3Fw... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUkAAAC8CAYAAAD1oly2AAAmGklEQVR4nO3df1yUdbrw8Q+CouIIpOBvfmiiqIXoSTonTXQxdZNEy9VWDSi1rScR2rRT/gg96qad8zBgZ+v4Y4FtbSnbpHBLk0en1H2CzcAeDX+U4Cj+YDRHB8RBkOePkRFTU2HuuW9mrvfr1cuXE973JSPX63vP97qur0d9fX09Qoi75uHhoXYIwolaqR2AEEJomaaSpNVqZfv27Xh4eKj+n8FgUPvbIYTQAE0lyTVr1vDYY4+pHQYAo0aNIisrS+0whBAq89D... | 1 |
science | grade-7 | compare-concentrations-of-solutions | false | true | The diagram below is a model of two solutions. Each pink ball represents one particle of solute. Which solution has a higher concentration of pink particles? | "iVBORw0KGgoAAAANSUhEUgAAAbAAAAEVCAYAAACBn7B3AABmI0lEQVR4nO29eZwU1b3+/5zqnukeGFYREAMysiODoEGi4h7FIO75adR4o16Xy8tcY7zGJJebzVyzeaNejTHhZjHGJffrfg0EEUQhalAUQlQSlU1lc2ObmZ5eqs7vj6qzVVdvM90zXcXneb1guk+dOnWq6jz1eZ9Tp6oZ55yDRCKRSKSQyertCpBIJBKJ1BVRACORSCRSKEUBjEQikUihFAUwEolEIoVSFMBIJBKJFEpRACORSCRSKEUBjEQikUihFAUwEolEIoVSFMB... | [
"Solution B",
"Solution A",
"neither; their concentrations are the same"
] | null | 2 |
math | grade-5 | mean-find-the-missing-number | false | true | Michelle has the following data: If the mean is 36, which number could c be? | "iVBORw0KGgoAAAANSUhEUgAAAQ0AAAAkCAYAAACTxm9CAAAId0lEQVR4nO2dW3AT5xWAP8kXyZYty1dsyzYGYxlsMA2UQiBcAk3JME2HMCVlSNopSR+aaTqdPrQPbWea6fShmaZDZzppmLSkSR46ZGgDTZzQFFqubXAptpGNje+2fL9fZFkXa7V9EBIWBJDwrmSS/5vxg1e72m+PfM7uf/ZfWSPLsgyAF2QX4AP8SwQCwecdDaAFjR6Iv7lIlmVZdgHuGIoJBILFj85fPLR4EQVDIBDcHzfgBa0sCoZAIAgT2Q1apFhrCASChwYJtKL... | [
"50",
"36"
] | null | 1 |
math | pre-k | holds-more-or-less | true | false | Which trash can holds less? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAANAAAADQCAYAAAB2pO90AAAeuklEQVR4nO2daYwkyXXffy8is86+5+jtnp1jh3twd8WlYUCkAVIibH8gbEE0IUKCbRiGDRuGCRiQYfuDj68GYQP6QhiWLQuGDQGCBR00RFk2IUOQqCVBmrSpJSVS3JO7Mz1XXzN9VVdVZkb4Q2Z1ZVbX0V3Z093VGT+gUJWVWdmRM/nPF/HivRdirbUP2/BOA3YiCC0Oh2MAnsC0hhdqsFgCediy9lvbZ90sh2Py+PgMeG834o2lErxUj9XlcDj6sxPBm3vwoA1... | 1 |
math | grade-7 | apply-addition-and-subtraction-rules | false | true | The number line shows an unknown number, y. Is 1–y positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAGn0lEQVR4nO3dT2yT9x3H8c/zOHbcxGlqUKgijTRjHRURbRQRTBIh4DR1QhyMuHCJkBhIILRJ3YHLqh2KkDhs2gEm0LILEhlSJaOKDW27GaQpdghRqIclqJpgDm1JWTbiJI7t+Nkh2EtG/gGOf7bzfp0eP/HhIz2W8tFXX/9sOY7jCAAqSH9/vyzL0tGjR01HQYnwzAFUkhrTAQDgVT158sR0BJQYzxxAJVlzwc5kMhoaGlIkEtGWLVuYIpQJJzWm7Og55SZH5CTvy/J... | [
"negative",
"positive"
] | null | 1 |
math | grade-6 | mean-median-mode-and-range-find-the-missing-number | false | true | Shivani has the following data: If the mode is 19, which number could g be? | "iVBORw0KGgoAAAANSUhEUgAAARAAAAAkCAYAAABBlmUaAAAIJ0lEQVR4nO3ceVCU9x3H8fc+yyHLKQh4IIJGQLBeRBAvvGIVYzSmmFSJTnWsmmRq7DHJGJO02tSYTBtto0GxprHNeBsPjAeSREGUkAgqVTERUcRyuApy7f30DysphQ66PI8r8Hv9t7/d+X2+851nvrv8nmU1sizLABbZhMFah022AjKCIAiNaZA0WjppdThpXO6tyLIsG621GG31Di5OEIS2wlXS4arVIVllsxgegiA8FKOtDotsRjJa6xxdiyAIbZDJWodklS2OrkM... | [
"19",
"5"
] | null | 0 |
math | kindergarten | equal-sides | true | false | Which shape has 6 equal sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAHXUlEQVR4nO3cf2jUdRzH8df3bjvGrvljTTdtC0/yrumQ/EESDipjVEpqyx8rGkQiBBKK4A8I/EMI1D9EsSiKKFq0GaJmKcYisRakzP0h1nk37YabumNzE8+b53V3n/44L8xsevq99+e+33s9/hlzY/fyePq94z43DaWU6o8D50aASBJIKBA9tCIDKHMC00qBShdg9N9U6uQ13bPIzuaNAYq6R9KfTHIBPne6QqKHFUkCgShwOQ4ERwDHtUT6C4yMzFTmTDcFANe... | 2 |
math | grade-4 | identify-equivalent-fractions-using-number-lines | false | true | Is 1/6 equivalent to 9/10 ? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABwCAYAAAAkAwevAAAcm0lEQVR4nO3dfVBU190H8O8K8v4iLCAsEEED+FKriRZYjZJGkxJ9JMaXiBrRKs2TjLHTJmQmTjpN4qRWa4yO2hRfxhjRdBo1eTQhMU8bA0wpiKj1bUQJiiILgrhshF3Yu3CfP+zySDVW417O3r3fz4xO9rKZ+f487OXH2XPO6mRZluEhCgoKYDKZ8Mtf/hL+/v6i42hWaWkp/v73v+OZZ57B0KFDRcfRrIaGBuzcuRMjR47ElClTRMfRtA0bNkCn02HZsmWio2haYWE... | [
"no",
"yes"
] | null | 0 |
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? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADzCAYAAAC8J2HZAABYbElEQVR4nO3de1zU9b4/+hdg0BJlyHJDymrAKVJ3OrA8mmfLckBTlp5jYFim4oDXNAsZJ7ucNjJI7UpF8L4K5TKGt1BHK0tMGVq0tuUqZqRlpqCDS3Jc+KMRwYQgzh/DfAOvXOYKr+dfOeHMh2X7sd98fH3fL7fm5uZmEBERERGRVbg7+gBERERERN0JB2wiIiIiIivigE1EREREZEUcsImIiIiIrIgDdjek0+kQERGBoKAg5ObmOvo4RERERD2KG7eIdB8mkwkKhQI... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6AAAADzCAYAAACYN3t1AABhoUlEQVR4nO3dfVjUdd7//SdS0IYyZHnKKmcDTUvqmQ6cXroeZ66Dmrp5XYYulnmHaGm6lTKxtXXtz4DYrspCUDO38AYwKg0Vu3HTUoaWzp/ltgzSkqno0GrhqT8aEUwI4voDZ/JelIEBfD2OwyMdme/3Tehx+Obz+r7fPo2NjY2IiIiIiIhH+Pj4eLsEkXari7cLEBERERERkWuDGlARERERERFpE2pARUREREREpE2oARUREREREZE2oQa0E7Lb7QwfPpywsDC... | 1 |
math | grade-7 | identify-trapezoids | false | true | Is this polygon a trapezoid? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAC4CAYAAADZuJt2AAATy0lEQVR4nO3dyY8c53nH8V/1PvvKIYeLSEqiTFlyFCuwEMiwbMOILSSKHCP/QC655RIbSIIszm4HiYHklEMuyTUXX6KLEckKLHiJYzmKFUuMJNMULQ732Wd678qhmnrfHpqa7q636u0ufj/AAE/LzarHB1I/PXzqrSAMw1AAAAAAnMj5bgAAAADIEgI2AAAA4BABGwAAAHCIgA0AAAA4RMAGAAAAHCJgAwAAAA4RsAEAAACHCr4bGNjVN6R/+7JUmZcWT0kzR6S549L... | [
"yes",
"no"
] | null | 1 |
science | grade-2 | predict-heat-flow | true | false | Two solid blocks are at different temperatures. The blocks are touching. Which picture shows how heat will move? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAWjklEQVR4nO3deXAcZ53G8e/bPSPNyJIlW7YlOfGROHac2LHNFQcSamMgEHIBuywEClIUoTiKpahdlpCCsGQ5stzLwgY2y0LYXFyhIBchbAIJueMjsZP4kI/YliMfkixZ0miuPvaPHlmnjRyNenrGz6fKlbinNO7R2/30+/7efqeN7/v+gRzsGIA+FxwfEZGiiBmos2FxDTRVgTmQ9f1neku9WyJS6VZPh9j2geAvLVVw5rQgjUREiqHPhW0p2J+D1gGwep3gBYW... | 1 |
math | precalculus | determine-continuity-using-graphs | false | true | Is f(x) continuous at x=4? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB7BUlEQVR4nO3de3hU9b0v/vfcM7lOMjMkIRgugiiYICgqCIrFqtXWCkq5X5Rq7an79pyzz+mzzz59zu7xeHrObvf+tdt2d9taAQERKmgFI6IgYFCRKAECQgiQK7lMMknmui6z1u+PcSIRkATWN5NJ3q/n8fHJMOuTT9aa+c57vrPmu0y6rusgIiIiIiJDmJPdABERERHRUMKATURERERkIAZsIiIiIiIDMWATUS+7d+/GmDFj8PDDDwMAvve972Hbtm2XvK+iKLjzzjv... | [
"yes",
"no"
] | null | 0 |
math | pre-k | count-scattered-shapes-up-to-10 | false | true | How many squares are there? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAFYCAYAAAAm1oiQAAAHmUlEQVR4nO3dsXHjQBBFQekKASDJjWqTRAaQIYfunUiN9K7bZ/Gbr8ZYvN/3fb8BAAAJf6YHAAAAzyPwAQAgROADAECIwAcAgBCBDwAAIQIfAABCBD4AAIQIfAAACBH4AAAQIvABACBE4AMAQIjABwCAEIEPAAAhAh8AAEKOV//B3ter/4K/sNY5PQEAgBdywQcAgBCBDwAAIQIfAABCBD4AAIQIfAAACBH4AAAQIvABACBE4AMAQIjABwCAEIEPAAAhAh8AAEKO6QE... | [
"7",
"8",
"9",
"4"
] | null | 0 |
math | grade-8 | classify-quadrilaterals | false | true | What name best describes this shape? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADbCAYAAABX2OaCAAAbiElEQVR4nO3de3SV9Z3v8U/2zoUkEhJuEnBIAgQ0sAxUBAK1BMEDalnSHm6j5dbCQabSZqCeoTjDrauUrjNoXHUqCtMjMnpArJdBOzJWCE4hwIEaLKSVBJKw5CJBCUESyW3PH7vbbCLI3smz928/z36/1nKJJPt5vv73WXt9f79PjMfj8QgAAACAJVymBwAAAACchIANAAAAWIiADQAAAFiIgA0AAABYiIANAAAAWIiADQAAAFiIgA0AAABYiIANAAAAWCjW9ACRor7... | [
"rhombus",
"trapezoid",
"parallelogram",
"square"
] | null | 1 |
math | grade-2 | greatest-and-least-word-problems-up-to-1000 | false | true | Haley wrote down how many cups of lemonade she sold in the past 4 days. On which day did the stand sell the fewest cups of lemonade? | "iVBORw0KGgoAAAANSUhEUgAAAVUAAAC9CAYAAAADbO51AABN50lEQVR4nO3dd3zN1//A8dfN3okMkSixQqIqCLEjRkmNGq3xo1rpUNoq6kvSVqmqUbuolmqM2mqvUiM2tSKhMYIkRkgii+zcnN8fl09yZcgU4zwfj/sgn8/5nM/53PG+Z93PUbn7ewgkSZKkUqEHMLLLiHIuhiRJ0otv9o456JR3ISRJkl4mMqhKkiSVIhlUJUmSStErH1STMvUYecaLbwNbkpSpV97FkSTpBfdSB9XTsfZsvFmrwGAZkmhDdKox4UkWLLpa/xmWTpK... | [
"Thursday",
"Wednesday",
"Monday",
"Tuesday"
] | null | 1 |
math | grade-1 | subtraction-sentences-using-number-lines-up-to-10 | false | true | Which subtraction sentence does this model show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABhCAYAAADsidaRAAAUiElEQVR4nO3de3BU9d3H8U8SEmIIuQAJmDYmhg4gGLlKuNRycUCsVaBKhI4j0SIW61ClD4OonYKmBWu1OtJxRDul1Ibh1gTRMjgDJuFpyIWQyCMMWMEQYhJKCIm5kizZ54/jbghByMYlZ8/J+zXD7O7Znc33Ry7ns7/zu/g5nU6nAAAAAHiFv9kFAAAAAHZCwAaAbzQ4pI9KpUf2S4HvSmsLza4IAGBFfcwuAAB8xY5T0tP/K7VJcjB4DgDQTfRgA8A3Fg+T6h6XPn/... | [
"11–4=7",
"9–1=8",
"13–1=12",
"9–5=4"
] | null | 1 |
math | grade-3 | interpret-line-graphs | false | true | A stamp collector carefully recorded the postal rates of the stamps in his collection. In which year did the postal rate reach 4 cents? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFtCAYAAAA9PB1eAABJgElEQVR4nO3deXxU9b3/8fds2VeSQAiEkABZgLDvmwKyiQu4ARUs2trW631o+7P1ttr2ttR6e1ttq3bx2quiAtcaEFwAwYZNFkGUfUkgISwJBMhCEjKTyWTm9wfN1JgACc6S5fV8PHzUnDlnzud8czq+853v+X4NLpfLJQAAAAAeYfR3AQAAAEB7YvZ3AfC+d999V+vWrVOvXr305JNPNngtPz9f//3f/y1Jev755xUWFtbke5SUlOjDDz/U0aNHdenSJRkMBsXExGj... | [
"1960",
"1955",
"1965",
"1970"
] | null | 0 |
math | grade-7 | identify-linear-and-nonlinear-functions | false | true | The graph shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABjDElEQVR4nO3de3BU953n/U+ru3W/IoGEhSWML9jCCBsbO2Cw8eDYjp14A5kszmwmk13PTJwdTzLZqdmamsqmdjJeP6maSfIkk2ST7GZjZ3bqScXly4ztCAbH2BARGyMbYQlfMAZdAF1aarX6fk73Oc8fQjLiYiQ4P1oN71cVhbql89FX59d9+nt+ffocn+u6rgAAAAB4oiDXBQAAAAAXExpsAAAAwEM02AAAAICHaLABTLn99tv17LPPTt3+13/9V1133XVyHCd3RQE... | [
"linear",
"nonlinear"
] | null | 1 |
math | calculus | domain-and-range-of-exponential-and-logarithmic-functions | false | true | What is the range of this logarithmic function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABgY0lEQVR4nO39e3RU953ne39KVaW7hIQEEghLGGNwwBIXGxxuMW58aztxAuk0Tp4kdj/uSTsTJ+nMWpknp0+S7mT5eHImnfTE7aTTnsnEzqw+Jx1PbCcGC4IDBiJiMDIIJBOMMQgE6FKoJNV9V9Xezx9CMrLBSHj/XCrp/VqLJamo/dFX+1f1q2/9aldtj+M4jgAAAAC4IifTBQAAAAATCQ02AAAA4CIabAAAAMBFNNgARqipqdGePXuGfz5x4oSmTZum9vb2DFYFAED... | [
"$(-\\infty, \\infty)$",
"$[5, \\infty)$",
"$(-\\infty, 5)$",
"$(-\\infty, 5]$"
] | null | 0 |
math | grade-3 | identify-rhombuses | false | true | Is this quadrilateral a rhombus? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAByCAYAAABpy6akAAAPZUlEQVR4nO3da2xUd3rH8d8ZT4bBNvEtmIKLMVtIKUtiA2Gz0BAvwZCIBWm1sAVc0W7TQJYJrERFpVayzM0SL1ZCSGnClt1phtIXEIdeEmgJay/drLLksgUTwtp7hXGXi3FcxngINnjm9IXJnDEYe2yfOQfZ34+ENJ4543lecDQ/n/P8/49hmqYpAAAAALbwuF0AAAAAMJIQsAEAAAAbEbABAAAAG3ndLgD2am5u1p49exSJRBQKhe57vbGxUYcPH9bFixfl9Xo1bdo... | [
"yes",
"no"
] | null | 1 |
math | kindergarten | represent-numbers-with-shapes-up-to-3 | true | false | Which group has 3 circles? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAJwklEQVR4nO3dW0zbdR/H8c+/tOXYcugYGx2Dgc/DYXMaMWCcLgGzgy4mmk0vhomZm4lXxix6hYkxJl64GC+W7MplZBEvFE22ZYmgYKLGuMVpJEQBnwFyRkBGKQXaQp8LhPxX6Dis7e/3JZ9Xsuzc3yfkve7fjbZGKBQKDfuB//mAqXkgGAKRdqwG4EgA/pMC5NgBY3guFLrpUT2LaP0qnYD1T9/id3bageLUxaqJdDM1D3RMA0N+oNMHWDzBxZ9gtKQzR8JiowD... | 1 |
math | grade-1 | ordinal-numbers | false | true | The first picture is a bucket. Which picture is sixth? first | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAgzklEQVR4nO3dfXAUZb4v8G/3zIQkMAlvCiRZFZaQFxFQ3CRuuZgjJIW7oJjE64K7pdHVsFVXwFrAul5QOHLOWZXdS+JWCYiGs3UFd03YPeKKJ0EPrlt1JxRcI3InvHpgnSS4sjmSgQQzme77x2QmM8m89Eyme6Z7vp+qrTUznekn+utvPz399PMIsizLICIiIiKiuBAT3QAiIiIiIiNhB5uIiIiIKI5U62B/45Ix8997cftHTnzj4igUIiIiIkoNMXWw/9jtwtZT18N... | [
"crab",
"boat",
"bucket"
] | null | 1 |
math | grade-3 | select-fractions-equivalent-to-whole-numbers-using-models | false | true | Count the equal parts. What fraction does this picture show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAAsk0lEQVR4nO2d25Mc93XfP32d287OYi+AFktgQXItEpJBQgKNUHIgUpRjxalKheXKQ97Mh1Tl0cxLnuW/wMxjHlymHlOVuBgn5UTlWIaEiKIhUSQIy4AkkMKS3F3uFTs7O7fu6e48nO6e687uArsAhjyfqqnp6en+TXd/a079fr/zO+cYURRFKIqiKIqiKIpyJJiP+gIURVEURVEU5fOEdrAVRVEURVEU5QjRDraiKIqiKIqiHCHawVYURVEURVGUI0Q72IqiKIqiKIp... | [
"10/5",
"5/2",
"10/2",
"2/5"
] | null | 2 |
math | grade-7 | rational-numbers-find-the-sign | false | true | The number line shows an unknown number, z. Is z positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAlwAAAApCAYAAADgbPfrAAAGLElEQVR4nO3dS2xUVQDG8e/O22nLIzBoF8WiwRhCbJAytEgiiXFFMBmkCzQQDIYIqRtd4EJ3hIREo1FIICEuUAgkZjBiWLlwwEVn+sDiSBOjFmgMyFALOC3zvi7aDlbsS5g5M/b/W917e9J8zd18Pefcey3btm0BQBU5ceKELMvS1q1bTUdBmXDPUe1cpgMAwGwNDAyYjoAy456j2s24cGWzWXV3dysajWrJkiX8l1EquVvKDRxUYSiiwq1zsnyPy6ptkquhXY6Fz5t... | [
"positive",
"negative"
] | null | 1 |
math | grade-2 | skip-counting-stories | false | true | Each pen has 2 horses. How many horses are in 6 pens? | "iVBORw0KGgoAAAANSUhEUgAAAVcAAADgCAYAAAC3iSVhAAAmPklEQVR4nO3dd1RU19rH8e/QQTqoKCCi2LCCCoixl0SNUWOJ0agxaDQ2bEneeBNr4jXFSDPGGktQo8ZyY+8YuxFjEmNDpNlFLFRp7x/oKIKVOR4Yn89arDVzZuacZ8btj80++8zWnM+NykWIYq7X/O4ALA1YqXIlQjxdr/ndMVC7CCGE0EcvJVxvZ2possWODjttuZ2peRmHFKJIpM2KoipyuG69ZELwKfMnNsCD141JSDXg31uGfHzUsqiHFKJIpM2Kl6FI4Tr5r1I... | [
"4",
"8",
"12",
"10"
] | null | 2 |
math | pre-k | light-and-heavy | true | false | Which is lighter? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKgAAACoCAYAAAB0S6W0AAAXR0lEQVR4nO2daZAcV2GAvz7mPvbWSrtaSdaNLcsyRjLGIHwQxyaYHGCcmKNCKqkUCUclhFQFqFAhVJFKnCqq4iRFBeIQHAghYGIIhoDASDZCsoQs20ire1fa1e5qz5npmenpMz96r9mZ2Vuot/d9VVva6df9+vXqm3e/15Lrum6/AecLkLPBchEIbhiqBCkFtsWhNQxSf8l1j2ZvdLIEgkruTIN6ruB9WBeGHQnPXoHgRpGz4Uwe+gw4WwA5a3kBQk6BH0gpnos... | 0 |
math | grade-1 | am-or-pm | false | true | Chase's grandma is reading a book one evening. The clock shows: What time is it? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABXnklEQVR4nO3de1jb5303/rcQfAVYAixhg+QDwgeIHQgkuElwmwJJaqdriHGSdkvazXhts7W9uuC1T9qt22O8dr92a5/HON26p4c1pAe33ewaF/dg52CRLCZNTC0bn4RPwgcBNsICYUDioN8fRCoHHW6dBbxf18VlkO7v/f3Yli4+ur+f7+eWuVwuF4iIiIiIKCKS4h0AEREREdF8wgSbiIiIiCiCmGATEREREUUQE2wiIiIioghigk1EREREFEHJ8Q6A4m98woGxiZE... | [
"6:30 A.M.",
"6:30 P.M."
] | null | 1 |
science | grade-7 | predict-heat-flow-and-temperature-changes | true | false | Two solid blocks are heated to the temperatures shown. The blocks are placed so they touch. Which diagram shows the direction heat will flow? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAWIklEQVR4nO3d6XMb530H8O8uLuIiKJKiKB4SdVsSZcs66Ui21aiuldROnbjKJI7tZKZ1X2X6on3d/gH9DzqZ6bR16hxWXFtyIlmHZVu3HFK3KB7ifYIASQDEvUdfLAkKIi2xJrC7AL6fGY/Fh8TiIZ7dL/f57T6AoKqqOpYCumNARAYkFUREOWEVAK8F2OQCVtkBYSypqtfDRneLiIrd/nLA2hXTvlhtB7a4tTQiIsqFiAx0RIHRFNAZA8SwpH2DYUNEuea1aNk... | 0 |
math | kindergarten | equal-sides | true | false | Which shape has 6 equal sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAEKUlEQVR4nO3dv47UVhiG8dczsyMtYWdTgaIUVAEpClGkRKJKwTYUXEIuIDeRMteQO+AiggRIgKKIJiRBSxbSIpaGwh5mw+x4TgrnRLOIP7s7Pt+xz3l+lS1L1lc8cufzFc45tz+X/p5JVS0tnIC1jQppayh9dkY6P5aK/dfOPShjj4WUXZlIo6ez5uaTsXTpo6ZCYF1VLe29kp7PpSczaVAumgdEhjZtDZumJGlaS4N65QHQJt/UoZMGcUdBLggNJggNJggNJgg... | 1 |
math | grade-3 | compare-fractions-in-recipes | false | true | Does this recipe call for more milk or vegetable oil? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH6CAYAAAA9XzulAAB5HklEQVR4nO3dfXzN5ePH8dc5O7vfmJnbSYq+KuZ23yhkoZJQakqofBG5J3x/viQrKkXuIpRU+ibhi0K5SyqFjA1ryP3tZpuZbXa/c35/rJ3MNrb5HFu8n4+HR53P5zrXdZ3Pudn7XOf6XB+TzWaz8SebzYbVaiUrK8v+z2w24+zsjMViwcnJCZPJhIiIlF02m43s7GyysrLIzMzEarVisVjs/8xmsz7LRUQcyJQbsK1WK9nZ2WRmZpKZmYmzszPu7u76EBYR+Zuz2Wy... | [
"milk",
"vegetable oil"
] | null | 0 |
math | pre-k | shapes-of-everyday-objects | true | false | Which is shaped like a sphere? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAIUAAACFCAYAAAB12js8AAAReElEQVR4nO2dy28kx33HP1XVPe8Zvskl9ylpLQmWLa0SyavEimMlQWQbNnIx4EsQH51TLrnmH8gtl1zyBwhBggBBEsSwY8eREwOxElu7ihfSarXWklpq+Z4H59WPqsqhyRUfM1zOLJesIecDNMiZ7p75TfW3f/WrXz1aWGvtUggfNWFTQ2wZcsbwBBQVfC4HMykQS4G179RO2qwhrnC9BN6dZvJiNgXP5RPFDDlbbGq43YAHIXzYBFmLkx1DQZxdiiq5/gB1DVL... | 2 |
science | grade-4 | identify-minerals-using-properties | true | false | Select the one substance that is not a mineral. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAANcAAAEGCAYAAAD2aACLAAC/pUlEQVR4nOz92Y9lWZbeif32mYc7X5vczKdwj4iMjIzKqsrKSmZVFotkE2RLIkhRgCAIkF70IqAFoZ9bQP8fepGgVgnoRouNbhIkm0CTapBsFmvOrIyM8HCPwSczt/nOZx721sM+55h5Zk1shlcGM20Bnp7u4W5u996z9l7rW9/3LfEHK6W+FkLf5CZu4ib+Z8SmhicxnBQwtuA3Rvr3jZvEuomb+PeLvglfC/X/j+qr3zduEusmbuLfP9o8KtXV7xk/nW/lJm7... | 2 |
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