subject stringclasses 4
values | grade stringclasses 15
values | skill stringclasses 445
values | pic_choice bool 2
classes | pic_prob bool 2
classes | problem stringlengths 0 1.12k | problem_pic unknown | choices listlengths 2 4 ⌀ | choices_pic listlengths 2 4 ⌀ | answer_idx int64 0 3 |
|---|---|---|---|---|---|---|---|---|---|
math | grade-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? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAAyE0lEQVR4nO29eZhcV3ng/XvPvVXVe7fU2vdd1m5JLVmSF2zAYDs2JICFJRkPe4AnIcwTMvMl+SafhyTM9w0zEEImDAlgwFj2CIwNJjbYBHmVLKslWbJlydr3bu2t3rvq3vN+f1R3q2vpvVapfs+jR33PvfecU1X3veec97wLFChQoECBAgUKFChQoECBAgUKFChQoECBAgUKFChQoECBAgUKFChQoECBAgUKFChQoECBAgUKFMgnJNsduF7RZw+GuNw0DocqrO3A5wq... | [
"1\n2\n of a full turn",
"1\n8\n of a full turn",
"1\n4\n of a full turn",
"1\n5\n of a full turn"
] | null | 3 |
engineer | grade-7 | evaluate-tests-of-engineering-design-solutions | false | true | Which of the following could Lauren's test show? The volume of sound that humans can hear is measured in units called decibels. The noise in a library is about 40 decibels, and thunder is about 120 decibels. Lauren wanted to increase the sound on her phone to 80 decibels. She knew that she could place her phone in a bo... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAFOCAYAAADtpiRUAADHPElEQVR4nOz9WZAk2Xnfif58jz0i96y9uqr3HQU0lkYTAAFCIMWBBF5yKHH0Miabt5n3MRuN5mVsZh7uNV3pmsyGprtoeCWOJEoEL0lxUQMQGiAaaKA39FZd3bVvmZV7ZGTsvpz74PGdOOEVWZVVXV2dVZ2fWWRkRHi4e7if8z/f+v+s//a//W8Ve7Ine7In95D8k3/yTz6R47oA//yf//NP5OB78tFFVrvkEzwH56MsudZHP/5HXfHvwCnsyV2U/+6/++8+sWO7n9i... | [
"if the bowl's material affected how loud the tone was when measured 5 feet from the phone",
"whether the tone was 80 decibels when measured 5 feet from the phone",
"how loud the tone was when measured 10 feet from the phone"
] | null | 1 |
science | grade-5 | identify-earths-land-features-using-satellite-images | true | false | An island is a piece of land that is fully surrounded by water. Select the island. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOEAAAC0CAYAAABi8Es+AADv5ElEQVR4nIz917MkWZLmif0OMXe/NDhJWlmcdFdVT0/P7MwsBiI7S7F4wBsg+MfwBoFABG8QLAQrstgFdsj2kB7SXd1d3UWzKjmJDHrjcnczO0fxoKrHzD0id+HdWRFxr7u52TlH2aefqoZv/Pg/EWREJBBDAkCohCCIRKACgr4iIUekCBCAiCAEKoEKEiBArSMhBGKM1CpAtM8HYgoIFSl63RAChAwxgAghRGIMiAil6L9FCiEEQrA7Eb0XkaCfRyBUQvuZTPc... | 0 |
science | grade-6 | 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 | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAaMklEQVR4nO3deXRU93338fe9s4+k0QhtiMVm3wTYbAZssA2O4xgXx3Xqxk4T07p18jx12tP0OE3b0yanT5o+cU+T8zRxnufETprETt3YThpv2IANJgabTWITSCxilRDapVkkzXKX54+RBoQEDGi4M4O+r3M4HP3mN/f+RlfzmXu/9/7mKqZpms0xqO+FkA6aiRBCpIVdgQIbTPdCuROU5qhp7g5melhCiJvdUh/Yj/cmfqhwwsy8RBoJIUQ6hHQ42gPnY3CsF9S... | 1 |
science | grade-4 | predict-temperature-changes | true | true | Two identical blocks are heated to different temperatures. The blocks are placed so that they touch each other. Heat can flow from one block to another but cannot escape from the blocks. Later, the temperature of each block is measured again. Which pair of temperatures is possible? | "iVBORw0KGgoAAAANSUhEUgAAAQQAAACgCAYAAADq8hJGAAAZKUlEQVR4nO3deXRU55nn8e+tvUo7aENoAYQQm1lMsAMmGGxwxzgJdjuTtBMn0ySZPp32SXen2+nO6e5090ySmRPHmT6TeMicnKSzQBLHHW8Y8AJtg83mjU2AggDt+y6Vaq+6d/640hVChZCg0C1Jz+ccH59TKhVX9733V+/7vG/Vq2iapiGEEIDF7AMQQiQPCQQhhEECQQhhkEAQQhgkEIQQBgkEIYRBAkEIYZBAEEIYJBCEEAYJBCGEQQJBCGGQQBBCGCQQhBAGCQQ... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAiAAAAC4CAYAAADaI1cbAAAkC0lEQVR4nO3deXQU150v8G/1vmgFbWgXQojNBkxsAnYw2MDEdrCdOInjjJ0EOy9nEh/PvEyWyZlMJvMSJ/PiOO+dlwXP5CSTxU7ieBIvYMAGbLPbZgcBMgKE9n1v9d5d9/1RrRaSGtFAq6q69f2c46PjptW66nv7q19X/eq2BECAiAiAEAIdAeCCB3CFgRDTgYgSxCQB6UagygHkWwAJLECIKKLDL3BoSOtREFGqW54BmLQeBBHpx3mP8nWWBah2Ku9WiIgSwRU... | 0 |
math | grade-6 | identify-polyhedra | false | true | Is this figure a polyhedron? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAARLklEQVR4nO2df1SU9Z7HX2hiYvBMR86tpXP40W2TUxsDJusmXn5Ul7y7Jwdr9XRQAS3b4CoMhT8qLgzmPWuizmgut5OoIGatHGuws7eizZlYbK/ZlcE2F+6xdfAcPHp3Wh7QSCl79o+H5wn5+cwvZsbu6xz+UGbm+cKb7+fn9/k8YZIkSfyFoGFKoBfgC+rr66mvrw/0MnyDFMK0tbVJmZmZEiABUmZmptTW1hboZXlFSArS09MjFRQUqELMjBSkmZGC+m+j0Sj19PQ... | [
"no",
"yes"
] | null | 1 |
math | grade-8 | nets-of-three-dimensional-figures | true | true | Which net will make this figure? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAAQQElEQVR4nO2de1RU5frHP8NFQMRB8q41qFkmKghJnkoHM6ufacPxUpEiIKCAppCknJ/U4J1UQiNCTAVLrV9pmJqnMhvIULNjjOKlFGREIAWCQLkMF/fvD5zpsrwAc4XDZ61ZS5Z7v893r++ad7/v8zx7tkgQBIE2zNmzZwkJCUEkEpGUlISLi4upJemG0Eb57bffhJCQEAH4yyckJEQoKysztbxW0yYNSUhIEJycnARAuK9bLyFmyWYhZnGycF+3XgIgODk5CUlJSaa... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUkAAACzCAYAAAAE9O5jAAAV40lEQVR4nO3de1xUdd4H8M9w9zro4pUSXC4ioiCGWqkMReVWCmu4rqGAF7ylgrWhZcUobRJaoGlpq4Ki2JYIXvKxdV1gDVttlUHQTEFQMbzw4MMgl+HiPH/QYKaeRGbmzBw/79fLF750mPP9ifPhd4bz/R4ZAC3IZGi1WlxpAIpqgepmoIlfHSKjspIBXSwBt45ALxtABoakSbmi0eKYWuwqiAgARnQFrMQugu50rrblYx8bYECnlu9oRGQ81c3AjzVAeQNwtha... | 0 |
math | grade-3 | find-the-next-shape-in-a-pattern | true | true | What shape comes next? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADhCAYAAAC9ZMGZAAAV9ElEQVR4nO3da4xc53kf8GeuO1wOd0nK5lUSZZOyZMsW49aRnFiWGqSQ0iYR2qYV0Bqt2gJF6rpQgQSVW9RO0Ur9kBRIC6SxG/hDqrhNkIvT1ikai0iTSLalOI6RUK4iWRJViabIJWnt8rK73Nm59cOaFGWJy53dmXPOvPz9AH3SnvM+z/tIg/++e2am1O/3+wEAACShnHcBAADA8Aj4AACQEAEfAAASIuADAEBCBHwAAEiIgA8AAAkR8AEAICECPgAAJETABwCAhAj... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAz4AAADhCAYAAAAJS2C/AAAcAElEQVR4nO3da5Bc5X3n8d85fZ2enu7RCOaikTQSGiFhLjIJFjjmEpe3wIltNtkkbCWuLHGqXA6Li1TFZbyphWR3RV7E2cqmKlm8KVLlEBKnYse54NQaVI5tZAy+sbZEZAGSsJBHo9FI6p77TPc5fc6+GI8QaO59bv3M91PlFwb18/z/z99u9a/P6W7L931fAAAAAIxgWVbcJSSSHXcBAAAAABA2gg8AAAAA4xF8AAAAABiP4AMAAADAeAQfAAAAAMYj+AAAAAA... | 1 |
math | grade-3 | coordinate-planes-as-maps | false | true | What is at (8, 6)? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFjCAYAAAAHNnwuAABtmUlEQVR4nO3deZhcVZ3/8fe5S229p7sTsidsCTskQMJOQmQTUAFFxwURxIAggqCMMPpTnBGZQUEUFxgZlDCMwkTENWDYRUZiWGQJS8jSWTrpvWuvu/z+qO5Kmu7snXQn9Xk9Tz1Ud917zre6QvWnT517jgnDMERERERERAaFNdQFiIiIiIjsSRSwRUREREQGkQK2iIiIiMggcjb+Yt68eTz33HMATJkyhUsvvZRoNDokhYmIiIiI7I5KI9jPPfccL730Erfeeivf//7... | [
"radio tower",
"pet store",
"science lab",
"restaurant"
] | null | 1 |
science | grade-4 | compare-properties-of-materials | true | false | Which is the most flexible? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADUCAYAAAD9VeO+AAB8AElEQVR4nOz915Nk15XmC/723kcf1+4hMkTqREITACVYVSyW6qq+3bfbemwe7h84ZjMP167ZjM2t7r7d7BIsFklQgITKRGoZOly7H733PBx3j4jMBAiRiQR7sNxSWAj3I76z9xLf+pb41cCYyyFUFd/YN/aV2qiAjyewnULTgj9tlF+X3wDyG3teVlVwOSz/Py6Ovi6/AeQ39jxtjr/MHH1NPp9D+ca+sU+2b0D5jX3t7BtQfmNfO/sGlN/Y186+AeU39rWzb0D... | 0 |
math | pre-k | different | true | false | Which is different? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAJaElEQVR4nO2dbWwcRxnH/7Ozs/bZPjs+J35rnNg+k0itUqmVIIoUkMgHKqGWSpTwogL9UKAqqBQptOLtQ5FopUogWqlVKyU4sfu9X5FQgbQEEtJCCy1UaQsSCClxpFj41r7LvewOH3bvHOr4fLs3OzM3u79P97L7zCP9d56d3XnmGcI551dqwAdlwPWABkeGQdgEyFPgIwPAhAOQK1XOL5ZUu5Uhg8PDgP1+Ofgy5QAHB4OrIcMcXA+4tAFcrgHvlQGr1Aj+yMQ... | 3 |
math | grade-6 | which-figure-is-being-described | true | false | Jayla made a 3-dimensional figure out of cardboard. The figure had a round shape, like a ball. Which figure could Jayla have made? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMwAAABSCAYAAAAYTjvBAAAS5ElEQVR4nO3deVSTV/rA8W/UuqCQ6FEKYyFJq9bqKDJHrQiItGrdl3FDQYVRGQdlcapYl/4KxyoqanEXxAKjdSragoqt6KhxtzgOS2VGZM5pwGkVtTZBRFDx/f1BkzYiS0JA297PORxJ3vve90nkyXvvfe99I5MkSbr5EP5bCvcq4LGEIAg/aiYD26bQ2QZebg6ym+WSlFH8vMMShBffm3bQLL+08oFjc3i9dWU2CYJQ6V4F5N2HGw/hWik0KX5cuUEkiyBUZdu... | 1 |
math | kindergarten | curved-parts | true | false | Which shape has a curved part? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAD50lEQVR4nO3bOW4UQRhA4TfjJWBzBuIAwBGQ7x+MxA1YckwIBksYj5qgsTDGHs9MV9fy13tRl0ol/cGniqoXwzAMZ5fw6QLO13A1YDa5wwU8PYBXj+DFMSzOfg7Du2+lx7LIvX0Ghx8vxsXLY3jzeFRoNrXzNbz/AZ8v4cMFLL9djRsis5Q9PRhNAXxfw3J9Y8MsZdemfg2wLDuK9ZLQLEtCsywJzbIkNMuS0CxLQrMsCc2yJDTLktBsq1arr5POC80ebLX6ymo... | 1 |
math | grade-5 | multiplying-fractions-by-whole-numbers-choose-the-model | true | false | Which model represents the product 4×
4
5
? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAaAAAACOCAYAAAB359yrAAAUD0lEQVR4nO3df2zU933H8ZeBILu1c4fbrbaryXYwQRqRfajUaJoJ50VE6Q8waFBQuhJb4CSjyeKoJEsliM+Jl3nLIpniSmMjwoGmIkCUwzQlihft6+Aqk0uV7yUlKdjEX3fq2Ula+xy7sZtBvD++fL++89nm7nuf7/fzMbweUtQGl7sv32fR+/u5+9z3sqampqaGPgP6PgXGrgJXpkBERCTckiwgbzGw4gvAV5YCWUN/mprq+UT2YRER0c1k7a3Akt5PzX8pXAq... | 1 |
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... | [
"HFO",
"HFe2",
"HF2",
"HF"
] | null | 3 |
math | grade-7 | changes-in-mean-median-mode-and-range | false | true | Look at this set of 8 numbers: How would the mean change if the number 47 replaced the number 79 in the set? | "iVBORw0KGgoAAAANSUhEUgAAAT0AAAAkCAYAAAD7Ne16AAAK2ElEQVR4nO2da3BU5R3Gf3tJdnPZzX1zJQi5bQIEiAGD8colEQwKYi2OttZOrc7YjtppO7Yzte1ML59ax9a2jFOgKha01FosQRCUm4QAIYRAyI0QYJNg7skmm+y9HzYsLknYxezZRfP+vu17ztl98j/Pec77vucSmdPpdALYbDA6Cg4H4EQgEAi++shALge1GpTKsSan0+k0j4LZHFxtAoFAICUqFajUoLTbROAJBIKvP2YzKJQgF4EnEAimCxYzyO32YMsQCASCwGC... | [
"increase",
"decrease",
"no change"
] | null | 1 |
math | grade-3 | identify-unit-fractions-on-number-lines | false | true | What fraction does the number line show?
0
1 | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAAoCAYAAADE3o01AAADQElEQVR4nO3dMUtcWRgG4G90LERQjEsQcUAUbIIEljTmD9grBATrgKUWio1oYWGjhSD+AW0iluIviFuoi4WlEZnIIMQoM1VUmC0WBoRkR3aHnDub52nvLd7mg5dzzz0nt729Xc3lcjE5ORlAduzs7ITZhOwxm0A9+WKxmDoD8B1mE7LJbAL1tKQOAAAA/yf51AGAp24Py3G+XozXJ28jIuLo+CyGZgrRPdqZOBkA8BxWsCFDzteKcfTuLG4Py9H6LR+t3/Jxe1iOo3d... | [
"1/3",
"1/2",
"1/4",
"1/5"
] | null | 1 |
math | grade-6 | classify-rational-numbers-using-a-diagram | false | true | Use the diagram to help you answer the question below. Which of the following is a rational number but not an integer? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEuCAYAAAC08GWcAACFc0lEQVR4nO3dd3hUZfbA8e/0kklvdEgIvUtVREBEFLEgYAFFxbIW7Lrquq4N9WfXde1dEFFAAUVFUOkd6b130ttk+sz9/XGTAaSXTMv5PE+eDJNkciYkd84997zn1SiKoiBEDZLrCLCvwk+RK0CFV8HhC+D0KTi8Cg6fot6u/HfwdtX93sBR7lMo96p/RnF6DWa9BrNOg1kPluDtg+//fp+l8r5Ek5Ykk4Zkk5Zks5Ykk5Zkk/o+wagJ809NCCGEECdLIwm2iBVFLjV... | [
"–28",
"7",
"– 2 5",
"194"
] | null | 2 |
math | algebra-2 | domain-and-range-of-radical-functions | false | true | What are the domain and range of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABp0UlEQVR4nO39e3hT550u/N86Sz4bG2xjsMEcnBhswJxiwAEKOTQkaSFtSbvbJrMzu9Pupu3090737tu37bR9M5lee6adq500uzuzM00yv9nTaaYkbSCGkkCA2AGDAYMNAWPAB8AH2ZKsw9I6aK33D8cO4mjBepCF78919Uotad3+spb06KvHj9ayGIZhgIiIiIiITGFNdgFERERERHcTNthERERERCZig01EREREZCI22EQUp7i4GA0NDaM/nzt3DpMnT0ZHR0cSqyI... | [
"domain: $\\{x \\mid x \\leq 5\\}$, range: $\\{y \\mid y \\geq-1\\}$",
"domain: $\\{x \\mid x \\geq-1\\}$, range: $\\{y \\mid y \\geq-1\\}$",
"domain: $\\{x \\mid x \\leq 5\\}$, range: $\\{y \\mid y \\leq 0\\}$",
"domain: $\\{x \\mid x \\geq-1\\}$, range: $\\{y \\mid y \\leq 0\\}$"
] | null | 2 |
math | grade-7 | describe-a-sequence-of-transformations | false | true | What combination of transformations is shown below? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEyCAYAAADA5Kd8AAAalElEQVR4nO3de5TVdb3/8ZdgiqJjXhAZEyLLsvI6agac0GM/6ng3LE9qejKWeYEjiv40EjU1zJ8X8JZmHP1laseCvAV5zLtIpm2vlZ0MCcxB8hYgiiQz549p5gQKDMNn9nbg8ViLBbNn7+/7M7DXmiff9Znvd63m5ubmAAAARXSr9QIAAGB1skRgz549u+oLWFNm1mqumavXzFrNXVNmAkAJa/3jFpFKpVLLtQAsoaGhodZLAICVtvbSD1T7G1qlUlkjZtZqrpmr18x... | [
"translation, then rotation",
"translation, then reflection",
"rotation, then translation",
"rotation, then reflection"
] | null | 3 |
math | grade-4 | what-decimal-number-is-illustrated | false | true | What decimal number is illustrated? | "iVBORw0KGgoAAAANSUhEUgAAAKQAAACkCAYAAAAZtYVBAAACTUlEQVR4nO3bsU0DQRRF0TWiIpdABaS04IJogZQKXAItLSmBxxsgPHfEOSHoSw4uIweP077v+wYRT7M/APwkSFIESYogSREkKc/3fnm+XB/1Ofhnvt5fbv58+EKKkRnuvpDbtm1vr7dLPvLxef3V7egv6Mj54rZ8e/TQ+Q5JiiBJESQpgiRFkKQIkhRBkiJIUgRJiiBJESQpgiRFkKScRv91aH7GXxothczP3D701vyMpQiSFEGSIkhSBEmKIEkRJCmCJEWQpAiSFEG... | [
"0.15",
"0.17",
"0.05",
"0.04"
] | null | 0 |
math | grade-8 | base-plans | true | true | What does this object's base plan look like? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABwCAYAAAAkAwevAAAYqklEQVR4nO3df1TUBf7v8Wdr6bdEhrZN1lIHrEtRCXLSLFsEdsVbKwX0200C0j1hfothxTq7HZxBz3rPV3EZ3Zva3pQh7cRWK9Om/RDvZfyReRfLES1/3MgPSurYsR0UC1mN+wfLZ9cyBJlhQF+Pv5JgPm9P/7z6nBfv92Wtra2tiIiIiIhIQPwo1AOIiIiIiFxMFLBFRERERAJIAVtEREREJIAUsEVEREREAkgBuweUl5dz9dVXk5KSgtfrDfU4IiIiIhJECthB5PV... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAygAAACgCAYAAADn/0jZAAAeJElEQVR4nO3dfVTUdf738Rer4RY3Q3dSeTNM9cPIBDllli0Cu+JVq6VUW+svEciuK81NcdU61RpD/tauVdwGt82bK3UMS7b8Ka03lfhbRjFzF1NEtxJjHZTVxtZ2VGxxgub6Y2LOVorcDHwHfD7O6cwB4zsv5i9e5/v+ft4hkrwCAAAAEBBer1efeaRPv5RON0oN/LXdrJ4hUkQP6T8uk6JDpRBRUAAAAICA+eysV385ZXSKrmlopNTT6BAAAABAd3LwS9/rtaH... | 0 |
math | grade-1 | cubes-and-rectangular-prisms | true | false | Which shape is a rectangular prism? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAWj0lEQVR4nO2de5RdVX3HP3ufcx/zyrwySSYZOsYQWIZIAElCLBAMykNEQWGVhS6xalxdq+2yauk/Kn8UbOujstR2LW3QCiqlS1CQN9pUQgskAWIwYAlECJlkJpln5n0fZ+/+ce6duXdmkpl75p4559zZn39u7rnn7P3LzHfO3Wf/fvu7hdZad6XhjVEYciCrMRhChy2gzoK11bA8DqIrpfWewaDDMhjmzuYlYL8+6r5pjcPZNa6qDYawMeTAayPQmYaDoyAHs+4... | 0 |
math | grade-4 | compare-fractions-using-models | false | true | Which fraction is greater? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAC5CAYAAAAS5EjTAAA9QElEQVR4nO3dfXhU5Z038G8IuhNQZ1K3a8hqJyFQLaAZfNkqAjNZteDbZsDy0se2GRqw1F7PwwRKSbrtk0nrluBbhl7XKmCQidoViJpJoa2ImoOJxK3SDGp87CMJJ8uzBLtXmZNKO6wG5vljuI8zIS/zcs6ZGfL9XJeXmsyc+56cn/jLfX73784Jh8NhEBERERGRJiakewJERERERBcSJthERERERBpigk1EREREpCEm2EREREREGmKCHeXMmTOora3FNddcg7/927/... | [
"6/10",
"6/12"
] | null | 0 |
math | grade-8 | rotational-symmetry-amount-of-rotation | false | true | This image has rotational symmetry. What is the smallest fraction of a full turn you need to rotate the image for it to look the same? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAATIUlEQVR4nO3deXxU5bkH8N97Zib7vi8QWQIECAn7oiiorVvtpYVbQcVehYrWi15ErNS6xFY/FGS7ilasKFdExbqg1V6Ly1WUgsoq+5KAgUDIRkL2mcl5+0camBAy5z2TmeTA/X3/gU/mzXOeyZznvOd9z3vmAERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERER... | [
"1\n2\n of a full turn",
"1\n3\n of a full turn",
"1\n6\n of a full turn",
"1\n4\n of a full turn"
] | null | 0 |
math | pre-k | count-scattered-shapes-up-to-10 | false | true | How many stars are there? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAFBCAYAAAACD9vDAAA0aklEQVR4nO3d63NU953n8U+rr7p1t1pSywiMMViDBoKNjQ0YYwPGYHCwcTAOtssx2OBLcO3us/0jtmqqZqumdvfJVu2jTWV2nWwyM0nNzGY8G8eVeDczyQwgqXVB3O8IJCR1q9WXfSC3zUVq9eWc7nN5v56hS+tn+ac+n/P7fc/358nn83kBAAAAcISGeg8AAAAAgHEI+AAAAICDEPABAAAAByHgAwAAAA5CwAcAAAAchIAPAAAAOAgBHwAAAHAQAj4AAADgIAR8AAA... | [
"7",
"10",
"1",
"8"
] | null | 0 |
math | grade-7 | classify-quadrilaterals | false | true | What name best describes this shape? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADpCAYAAAAeakAkAAAROklEQVR4nO3dwYuk+VkH8Ke6e7t6Z6JVIK7iwWlcHBTCzkTBBUnWXSQoREhy8JZATiIRzE2FZNld3Rw8BIKQm4Kw+QNy8OTmMLMI0TjIzDVR7BERycWq1Z6d6p2e8vC+b1e9XdW79b7vr6a66/f5wPAWVV3d776n5332+z5PbzqdTgMAAEhiZ9MnAAAA20SBDQAACSmwAQAgIQU2AAAkpMAGAICEFNgAAJCQAhsAABJSYAMAQEJ7mz6BZ+Hx04jj04jj02kcn0Y8qr2... | [
"trapezoid",
"rectangle",
"parallelogram",
"square"
] | null | 1 |
math | pre-k | ordinal-numbers-up-to-tenth | false | true | The first picture is a star. Which picture is seventh? first | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAi+ElEQVR4nO3de3yTVZ4/8E/SJG3ThrT0Bm2pLVIKtMhFBMrNCkplWBAZbgs6eMEVx33NArIz89uZl4Dj7OoMgrvrKK7gdXW5KCpFschNQQGHS4FyKRcpbSmlpTRpSJsmbfL746Gh9+byJHmSfN6v17yk6ZPnOf3OOd+cnOc858hsNpsNREREREQkCrmvC0BEREREFEjYwSYiIiIiEpHHOtg6iw1p+bUYtscAnYWzUIiIiIgoOLjUwf7imgWrzpm67Djvu9GI4jorCvR... | [
"moon",
"rocket",
"star"
] | null | 0 |
math | grade-2 | estimate-to-the-nearest-ten | false | true | How many marbles are there? Estimate. | "iVBORw0KGgoAAAANSUhEUgAAAlgAAAGxCAYAAAC+xcgLAAEAAElEQVR4nOz9eZhdV3UmjL97nztUlapKVVJZs4QteZKs0J8c23gEAlj+MYQEDz8w3ekQ06R/IaG/JLghzfMFYyek6UCedn8OCQ2fTcDfE9vEAzYNDcbYCZ5kQ7DxIGuwsWSVSrJck2q449l7/f5Ya++zz71VpZoH+a4Hc3TrVt17hj2s9a53vUsREaFhDWtYwxrWsIY1rGGzZnqhT6BhDWtYwxrWsIY17GSzzEKfQMMa1rCGNezktaGCwZ7DJQBAW7PG1g3NC3xGDWv... | [
"about 30",
"about 90"
] | null | 1 |
science | grade-3 | identify-plants-and-animals | true | false | Select the plant. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADeCAYAAABL7FARAADsjElEQVR4nOz9Z7Qkx3Xni/4iMstXnao63vv23gANNADCEAC9SJESSYnyI41mNN7cN/6OuXecrsY8jdGVRhRFaURSlERPggQJDzQaaO/t8f7UMeVtZsb7kJlVWadPg+AdfbhvLcVaQJ/KysqMjNi5Y+///u8d4kxGqV0RiGn8RfuL9v/KljPhVgGWqpDU4dGEfVz+heD+Rft/e4tpsCti/503G8flXwjuX7T/f2iunNZU45i+3Yln5y2UAKFAKoklLJDC+QyWsM9... | 0 |
math | grade-8 | parts-of-three-dimensional-figures | false | true | Look at this figure: What is the shape of its bases? | "iVBORw0KGgoAAAANSUhEUgAAAQAAAADbCAYAAACC/E8+AAAcDUlEQVR4nO3deXRUZZoG8Ke21JYVEiB7ICRhUQKpJIAsoeE4091DExpaZFqxW0ccF7AZt0YZnXFpEGxtZBFtbOkGHQEbRIinZRwjJCwBkhCECAkEsgfIVpWl1lv3zh9FitwiQAhVdavqvr9zOKePdal6Q+c+9d3vvvf7JBzHcSCEiJJU6AIIIcIRTQB88sknCA0Nxbhx47B06VJ8/vnnuHr1qtBlESIoiRguAZ544gls3ry5z9dGjx6NyZMnY9asWZgxYwZiYmK8XB0... | [
"nonagon",
"circle",
"rectangle",
"decagon"
] | null | 2 |
math | grade-6 | identify-polyhedra | false | true | Is this figure a polyhedron? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAARgklEQVR4nO2ce1TUdd7HXzMMA4KOjIgyqICoKOslVEqjtNVKzUu6eTmu4CWyMqy0Tde0vKVGBpaX2qNZK7Luk8r67JMtnsyli6FbuCpqIgoKg44g6HCV+/B7/oCZwGHuMzB0eJ3DGWZ+38sH3vP93T7vz08kCIJAB06DuK0D6KA5HYI4GR2COBkdgjgZHYI4GR2COBkdgjgZHYI4GR2COBkdgjgZvwlBZDIZMpmMwsLCtg7FZtq9IO+++y5lZWWUlZUxefLktg7HdoR... | [
"yes",
"no"
] | null | 0 |
math | grade-7 | which-is-the-better-coupon | true | false | Which coupon should Jayden use to save the most money on a wooden bench originally priced at $82? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAASYAAAC5CAYAAACFg5L4AAAqqElEQVR4nO2deXhT15n/P5LlRd43bINtINjsAYeQBEgC2ZdCkiZtuibNtE/b6RJmkkyX6aRpO53mNzNdU9omvzbdE7K02RoIWUgamgVCyAJmCxhjSGyMjfG+yNqs+eNYWLKu7HOle6Vrcz7Po8fo6txzDrb01Xve8573tQUCgUCLB+oHoNcPvgAKhUKRUBw2yEmB2ZlQmga2FncgsKMn2dNSKBQKwbJccBwaEE+mpsHcLKFaCoVCkUh6/XCwH457oG4A7D0+8YI... | 1 |
math | algebra-2 | find-inverse-functions-and-relations | false | true | The graph below shows a function. Is its inverse also a function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABrlUlEQVR4nO3de3xU9Z0//tfckkyukwskEEgQkGggiaDBBolgodVqpYWui+26bndtd+1W7Xa33Z/br+1v27J+u7/W7tZqt+3Wb73sfrdbt2hRjAiKJA1KIEIgQSFGciPkMsnMZC5nzmXO+f0xTGS4SAbOh8kkr+c/PDLJefHOOZnPvOczn3OOxTAMA0REREREZAprsgsgIiIiIppO2GATEREREZmIDTYRERERkYnYYBMRERERmYgNNhHF+a//+i80NzdPfK1pGrZs2YJ... | [
"yes",
"no"
] | null | 1 |
math | grade-4 | multiply-unit-fractions-by-whole-numbers-using-models | true | false | Which model represents the product 6×
1
10
? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHoAAACOCAYAAAD+WhzrAAAEpElEQVR4nO3dv28bdRzG8eecX6a0xAMCdSFeAG8xCBRv9mYW5IndAxMMMUww2f4HaBTxByQ7SCgMwZtvauopYYCUUmS3sQgKgxunkRPifhlOhygKDPhzvkue5yWd0ijS9z65d5xYun5tzznnDs+Bn0+B4Ri4cJBrYNYDbs0Ar98AXp0HvMMz5zrHcY8lUVp5CZh9cBp8cnseePPF4KdArr7hGLj/FPj1HPjpFEgdXwRfUOTr5dZM0BQATsZAavy3L8j1Ejb9wwG... | 0 |
math | grade-3 | match-mixed-numbers-to-models | false | true | Which mixed number is shown? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAAmaklEQVR4nO3deXxT553v8c+RbdmSF9nybmOMbeyw7zskJKFZIZANCNnXJk077fTeTGamvdPbue20t2k703aSNEvTJKQkzU4ggTQsYSuExewYMJjVeMPGmyxbsq0zf0gy3q3dsv17v16Bl6RznvNIv3++efid5yiqqqoMYFeaailvrKTOYkIfpkMfGuH4W4dBG9Xf0xNIjYQQQggxtIT29wRcsbf8KHvLD3OhvpRycxUVjVVUmKsoaajo89y0yCTGGHMYF5/HNcYsxhp... | [
"1 3/4",
"3 3/4",
"2 3/5",
"3 1/4"
] | null | 0 |
math | grade-8 | transversals-of-parallel-lines-name-angle-pairs | false | true | \line{FH} and \line{IK} are parallel lines. Which angles are corresponding angles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD2CAYAAADs6vBqAAAWb0lEQVR4nO3db2hd9f3A8c+9tWlHZ3O76lbd7Oq0UrRZ2npbV0TTwGRjDEwZjAljbRH2x7/RMWVMoWzDB3ugkT5xf5gRFBk6kj0YTNxIZeBGl1ujl7JusKYtHXRjNomdsFZtfg/8JTbmJk16/5x77nm9IGDu0Xs+54sP3v323HNzk5OTk5FB4+PjERFRKBQSnSOtrB8AQGX5pAdISn9/f/T39yc9RmpZPwCAynJZ3cFet25d5HK5GB0dTXqUVLJ+AACVZXIHe3BwMI4... | [
"\\angle{HGE} and \\angle{FGJ}",
"\\angle{HGE} and \\angle{IJL}",
"\\angle{HGE} and \\angle{KJG}",
"\\angle{HGE} and \\angle{IJG}"
] | null | 2 |
math | kindergarten | times-of-everyday-events | true | false |
Deb is driving home from work. What time is it?
Choose the more likely time. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAh7ElEQVR4nO2de3yT5f3330naJM2h6TktBVrsQYTSAwzxUE4iQyc4t5cOdXNUDnOboqDblA2ebT9QmXMDBJ79nIh17hEQ0AnIWYRStIBQWtoJPUBboGl6TnNo0jS9nz9CA6EcmjQ9AH2/Xn01vQ/X/e39yXX+Xt9LJAiCUNUCJRYwOqBVoJ9bCD8RqCWQoACtFERVNkE40tTbZvXTE4wJBL9ii/OPKCncqXR+G/q5dTA64LQZdC1QZAFxU6vzRL/YtyZqiVNbAJM... | 0 |
math | grade-8 | identify-alternate-interior-and-alternate-exterior-angles | false | true | \line{QS} and \line{TV} are parallel lines. Which angles are alternate exterior angles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADSCAYAAABw17dKAAAf3ElEQVR4nO3dfXBU5d3G8WsJCY2h3WQCJmFBAolCQWoQqoCOmzjBoWIhOMrwNhJeqiJBto5YEGlo7aPjS2mUKDCThtARjJ10si3JiBogqVaosLCIRpENhgiyC0J2a9IUQuD5w5IxhfCS3c3ZZL+fmZ3Rc+A+F3/scPHLfc4xnT9//rwAAAAABEQPowMAAAAA3QkFGwAAAAggCjYAAAAQQBRsAAAAIIAo2DDcoUOHZDKZWj89evRQUlKS7r//fn3yyScBu47X69Uvf/l... | [
"\\angle{VUW} and \\angle{TUR}",
"\\angle{VUW} and \\angle{QRP}",
"\\angle{VUW} and \\angle{SRP}",
"\\angle{VUW} and \\angle{TUW}"
] | null | 1 |
math | grade-2 | write-subtraction-sentences-to-describe-pictures-up-to-two-digits | false | true | Which subtraction sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAfQAAAD6CAYAAABXq7VOAAA/UUlEQVR4nO3de3Ab9cH/+8/ueiXZ8k12iGM7CUkIqZtCQkiTkgOhJeWhdHLacMrTwg/o/Mqcdjp0OicDh9J0OnROhzIdeDjMwEwLHUqBabkdfkwhpYUC5dYCIU7ShDzN1TjBt8SOHdm6S6tdnT/WsiTvSl6tVs7a/bz/4Iml1e6+rD7zXe9VyGQyGTDGGGNsTiee6xVgjDHGWOVVfUDvGe6u9iJmJTrcFR3uig53RYe7mi2HYwP6aGjA8NqzH/wUT7yzHYPBI5amd0N... | [
"52 − 1 = 51",
"50 − 2 = 48",
"51 − 1 = 50",
"50 − 1 = 49"
] | null | 3 |
math | kindergarten | one-more-with-pictures-up-to-10 | true | true | Count the flowers in this group. Which group has one more than the group you counted? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABmCAYAAADxjOYpAAApNUlEQVR4nO3deZyd1X3n+c/zPHeru9dya1+kWrTvQmhBgEBAzBLMEhO3E5TY6SQ26e5Jd7B7eqYTOz3tmYk77XimM0nc6WkbPE7Hie2A2wFjMMZmEUJCoB1VSbWvt5a7L8+993nO/FGK3AQMKlGlS936vf9B0uueuuenq9+rvpw6zzmaUkohhBBCCCGEWBR6uScghBBCCCFEJZGALYQQQgghxCKSgC2EEEIIIcQikoAthBBCCCHEIpKALYQQQgghxCKSgC2EEEIIIcQ... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA1YAAAB+CAYAAAAnS4CtAAA9uElEQVR4nO3deZxcZ3ng+985p/atq/e9W+pF+2Yt1ubdxuAFY2y2EOwEGBJwZpJhWCZzP5lAMkPmJiSEuZkFknsDhpDEGTYbMBgb2+BFliXL1m51t3pfq5fal1NV57z3j5KFHYzVsmSVuvr5/tNWu073++jo+Xze5101QCGEEEIIIYS4KJRSTOdhIANJC4rS2644Dg2CBvT6oNFV+p6GFFZCCCGEEEJcNNOm4vlEuVshLpWdIWhwgaPcDRFCCCGEEKKS9GdKX5t... | 1 |
math | grade-5 | points-lines-line-segments-rays-and-angles | false | true | What is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABFCAYAAABwtJGxAAAJ70lEQVR4nO3dX2hb5xnH8d/Rkf/JPlLjJrJHlJWsG61F046ttIImLQyWDbreLIHR7WJ0F2MwsvQmd6OMhO1i6iAw2CiF9Kq0Aw0GJd3mlNGu23IMbW+y2mVbWQoKS9zEtSRbkm0dnV3on4+lkzjJsWVL38+Vco6O9Dok8PPL8z6P4bquKwAAAACBCHV7AQAAAEAvIWADAAAAASJgAwAAAAEiYAMAAAABCnd7AcBWyefzeuSRR3zvv/vuu0okEtu4IgAA0A8I2OhZtm1... | [
"a ray",
"a point",
"a line segment",
"a line"
] | null | 3 |
science | grade-6 | compare-thermal-energy-transfers | false | true | Two friends bought phones that cost different amounts but had identical batteries. After using the phones for a while, both friends had to turn them off to let the batteries cool. This table shows how the temperature of each battery changed over 5minutes. During this time, thermal energy was transferred from ____ to __... | "iVBORw0KGgoAAAANSUhEUgAAAvgAAABfCAYAAACdpLOcAAAsJUlEQVR4nO3deVhTx/4/8HcCsiMIuFQpDXAREDFVBMWKeMHWpbYq2iqCqL2oT7UK9tZWSosVEZfr/VZbEVtBa12qqOiVaq/auu9WVCj6cwFcCkU2EUhCQmB+f3CJhCSQhEAAP6/n4Q/mzJnzmcnMyeScyQln9Vd5DIQQ8pKZ/aEdtiUW6zsMQjo0GkeEqOezZb3b9HjcNj0aIYQQQgghpFXRBJ8QQgghhJBOhCb4hBBCCCGEdCI0wSeEEEIIIaQToQk+IYQQQgghnQh... | [
"the surroundings . . . each battery",
"each battery . . . the surroundings"
] | null | 1 |
math | grade-2 | flip-turn-and-slide | false | true | What has been done to this letter? | "iVBORw0KGgoAAAANSUhEUgAAAPoAAABkCAYAAACvgC0OAAAMhElEQVR4nO2dfWwUZR7Hv7Pt0oal3S4c7dVDuq28SEulalXAXNni8XIJgZA7BU/jtXp4vVPIxSgvUbnVw2glnoLJHbF6xTMKWuNhQ4yiobCoFA+hWgpVKbtwRNja2l3o0pd9mfujbFHcsjOz88zr7/NXk87+5pfd+e7zzMwzn+XmzJnDu1wuyMHevXvB8zyonvR6TU1NstRSG5fLpen32Wz10l0uF9xutywFn3jiCfA8T/VSqGcU6LjSVj2LLJUIgtA0FHSCMAEUdII... | [
"flip",
"turn",
"slide"
] | null | 2 |
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. Darrell wanted to freeze soda to make popsicles. He knew that soda contains carbon dioxide gas, which forms bubbles as it escapes from the liquid. He wondered if the popsicles would freeze more quickly if he removed... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAE3CAYAAADBi3hdAAEAAElEQVR4nOz92a9tWXbeif1mt7q992luf6O5ERmRGZkZySQzk0pSpIqUBEl2QXC5rHJTgA0bfvCDAf0HRsFvfiz5zX4x3AGGbaikB5WKEmEUJZXYiKQosWf2kRGR0d7mNLtZzez8MOZa+9ybVMGqEpRJQws4uPeeu88+a68115hjfOP7vqH+5t/8m5l/d/y7498d/+74M3T8rb/1t34kv9cC/G//1n9KGg+cq0w9ePjeJ/zK//H/zv/t//q30a98jl+3il1oeOnCsDY... | [
"the bottles with lids taken off",
"the bottles with lids kept on"
] | null | 0 |
science | grade-2 | identify-mammals-birds-fish-reptiles-and-amphibians | true | true | Mammals have hair or fur and feed their young milk. A red kangaroo is an example of a mammal. Select the mammal below. | "iVBORw0KGgoAAAANSUhEUgAAAtMAAADMCAYAAACx6y9WAAEAAElEQVR4nOzdd7wfVZ34/9ec6fPpn9uSm0oSUoDQm5QIAlIEFCmCIE3FL0UEK+qyLuoXdxXUVVFpLigoylf5KrgubV1awJDQSwrpubk3t336Z/qc3x/X3C+BACFGcX87z8cjD7gzZ+ZzPuec+cx7zpw5o0gpZRRFJElCKpVKpVKpVCqVemtCCDRNQwnDUKaBdCqVSqVSqVQq9fYIIRBpIJ1KpVKpVCqVSr19SZIg3ulMpFKpVCqVSqVS/12lwXQqlUqlUqlUKrWd0mA... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA4IAAADMCAYAAAAmsx3gAAEAAElEQVR4nOz9ebxkVXnvj7/XWnuu8cw9MjajNKAMIgiKigJxZlADcY5eccTEiBrjJeaniaLmxik4RRSNkWu8TjGC/hJUEBlEBIRm7LlPn7nGPa/1/aPOOZxz+kyNHTH31vv1Ot1Ve6+99lO7dlXtz34mYYwxWZahtaZLly5dunTp0qVLly4rI6XEsixur8NRBSipJ9qiLl0Wp5HDlhbsSaDHgqdXO8tlVwR26dKlS5cuXbp06bJ/aK3JsqwrArv8wVNSnZsVAM3... | 1 |
math | pre-k | cones | true | false | Which shape is a cone? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJ8AAACfCAYAAADnGwvgAAAV1ElEQVR4nO2dT3ATx57Hv90zY8myjG3Z/DO2gQ04Ba9AVFK1kEOWh3dzIZXkkPBOwF5IZas24RVv3152w15I1R52U4+XZA8bksNCbpscQhZOLCzkAMkhhZ2qULGdB0YC88CSZfTfmuneQ2tGki0bS5rR6E9/LpbHo+mW+6vfr3/959eEc84fLQLTKSBuADqHROIIKgG6FWCnD9jYAZBHWc6/f+p2tSTtxv51gDqVEr9s7gCe7xLKlEicIG4APyeB2UVgMgXQp7r... | 1 |
math | grade-4 | properties-of-three-dimensional-figures | true | false | Anita made a 3-dimensional figure out of wood. The figure had a round shape, like a ball. Which figure could Anita have made? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAIcAAABSCAYAAAB+FMeWAAAVFklEQVR4nO2dW4wcV7nvf2utqurumZ5LfE8gzJgk3oRwtq2IIxI/2EOEwEY+8gS0HxAI21yCuDzYUiIIUiRQHhAgJeaFCAR44AkFJNvsHHHCRYyTHO0oF3A2QT5JvDOTwD4Y24mdmenuqnU9D6u67cnOKPbMOObg+o1KPVPdVb2q69/f961vfWuNCCGEExqOt2HWgQ1UXKEkAgYU3NAHazMQJ4oQnpi53M2q+HvjfYOQvNCOf1ydwT/1R+VUXJnMOniuBX/V8Hw... | 0 |
science | grade-6 | compare-concentrations-of-solutions | false | true | The diagram below is a model of two solutions. Each green ball represents one particle of solute. Which solution has a higher concentration of green particles? | "iVBORw0KGgoAAAANSUhEUgAAAbAAAAEVCAYAAACBn7B3AABQgklEQVR4nO2dd3wUdf7/X7MtyZY0QgKBhIQQQksAkY5dFCEqqGcBPdGfwvG1nIccesfpnXoq6lkOO2c/Uc8Kp3CIIIIU6UhJaEkIJaRA2u4mm93sfn5/TNnZ1N3NbNjyfj4egd1pn89M5pX36/2ez8xwjDEGgiAIgggxVOe7AwRBEAThDxTACIIgiJCEAhhBEAQRklAAIwiCIEISCmAEQRBESEIBjCAIgghJKIARBEEQIQkFMIIgCCIkoQBGEARBhCQUwAiCIIiQhAI... | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | null | 1 |
technology | grade | logo | false | true | This is (part of) a (former) logo of which computer related brand? | "iVBORw0KGgoAAAANSUhEUgAAAS8AAAEsCAYAAACSSjV2AAA2JklEQVR4nO2deXRU533+n/feO3dmJI0WJCS0AGIVILNKAplFBQExxuCAsWPH7c9p6jppm7RN2v6ytT2/5pxmc7M1ixMnce06tuPYxnbAC2CwQQYsEGIzwiwCZBBgSUigdWbuzL3v74+ZkUZom33unfl+zvGJDxHW1R3dZ573mef9vqy+7jQIgiCMhhDvCyAIgggFEi+CIAwJiRdBEIZEivcFEImHW3VzWbsIAOhTJ8JisbI4XxKRgJB4ERHjRmsz77uxHzPk5zEntwl... | [
"IBM",
"PlayStation 2",
"Broadcom Inc.",
"Nintendo 64"
] | null | 3 |
math | grade-8 | parts-of-a-circle | false | true | What is \line{ON}? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADICAYAAACdx5VnAAAx9klEQVR4nO3dd3xV9eHG8c/NniQhYY8MwiYBFMKeMkSmolIoiopVqVipC0vraK3auq1i1aLFgaKVoYCyh4DslRBZCQk7gZBByCD3Jvf3R34cEllCxrm593m/Xr48K+c8CfePJ998zzkWu91uR0REREREnIKH2QGqg8ViqdLz63ckEREREXEULlHwVcBFRERExFW4mR1AREREREQqj5vFYmH16tUX7ejevTsNGjS4aHtqaioWi4X333+fGTNmYLFYsNlsVR709ttvZ8C... | [
"radius",
"center",
"chord"
] | null | 2 |
math | grade-8 | identify-trapezoids | false | true | Is this polygon a trapezoid? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADbCAYAAABX2OaCAAAb/klEQVR4nO3daXRU553n8d+tRSWVSlJpAbHZmBAD8YLBCwYc3DHHdmziDu2YxLHP9HJmOpPE3Sc93X1OnzPTL6b7Xc+LnpOks9pJpu1kbGODsek0btrnkGkvLAYHzGaMFxwsg9Bakkqlkmq580KmbgkoSaBbd6n6fl7VFVWuh8CNv7516/kbpmmaAgAAAGCLgNsLAAAAACoJgQ0AAADYiMAGAAAAbERgAwAAADYisAEAAAAbEdgAAACAjQhsAAAAwEYhtxcATObwwRE... | [
"yes",
"no"
] | null | 1 |
math | grade-1 | which-tally-chart-is-correct | true | true | Emma looked in the cookie jar. Which tally chart shows the right number of each cookie? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADhCAYAAADyOcJJAABSbElEQVR4nO3deXhdV33v//faw9lnPhosyZJnx4lNYjsJGclACIShQBsCFAqltOm9LYUWermXe6GXW+ht+3t+t7f8Wigt3DZtgdIJKAHaC4UATdOkGchI7IyOZ0uWLEs687CHtX5/bFmyIsmW7SPJdr6v5/FjaZ9z9l5rWXny3Utrf5YyxhiEEEIIIYQQbWEtdwOEEEIIIYQ4n0iBLYQQQgghRBtJgS2EEEIIIUQbSYEthBBCCCFEG0mBLYQQQgghRBtJgS2EEEIIIUQ... | null | [
"iVBORw0KGgoAAAANSUhEUgAABCUAAADhCAYAAAD/Pg8jAACRS0lEQVR4nOzdd3gd1Zn48e+ZcruuumRL7gbb4Ao2vQVCgEACoSSQypJGQiob9pe2IQnZTdn0ZJNASIUNCSShhyQQYgjNBhtsbDDuTZIlq13dfu+03x+jYiHJlm0Vl/fzPHosz505c+ZYvrrzzjnvqzzP8xBCCCGEEEKMCKXUeHdBCCEOG9p4d0AIIYQQQgghhBBHJwlKCCGEEEIIIYQQYlxIUEIIIYQQQgghhBDjQoISQgghhBBCCCGEGBcSlBBCCCGEEEIIIcS... | 1 |
math | pre-k | circles-squares-triangles-and-rectangles | true | false | Which shape is a triangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACJCAYAAADUvSEiAAACSUlEQVR4nO3UO25UQRBA0ZrxJzC/DERACCyBfXkhLIwd8MkIMKkNljAePYInJHI8d4Q5J+pWS6UKrnqzLMtycTPz6Xrmajdzuwz8tePNzKOjmZdnM89OZzYXP5bl3eWh1+I+e/N45vjj9Xp5fjrz+sFaIfytq93M++8zX25mPlzPbC9v1weRcZceHa1Nzcx8281sd388wF363dTPZWZ72FX4XwiNhNBICI2E0EgIjYTQSAiNhNBIHO9r8Nu3n/c1mj05P3+xt9l... | 1 |
math | grade-4 | acute-right-obtuse-and-straight-angles | false | true | Is this angle acute, right, obtuse, or straight? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAA4CAYAAADHCI+uAAAJCklEQVR4nO3de2yV5QHH8e9paTncewMsuEkpMKBesOJlgqOCuASJEHCKigIqE5ds4pJlccsANdmWLJmii4CAg0VwZOqAgRe8QUR0IsrYuCy1RSd3TqGHQjm01LM/WgnY0imentPXfT9Je3L6Xp7f+9+vT57znFA8Ho8jSZIkKSHSUh1AkiRJ+iaxYEuSJEkJZMGWJEmSEqhRwV60aSOLP3g/FVkkSZKkwGtUsHtl5zD5uWXkPjyDP7zzNpWx46nIJUmSJAVSqKldRHI... | [
"acute",
"straight",
"right",
"obtuse"
] | null | 3 |
math | grade-2 | place-value-up-to-thousands | false | true | What is the value of the underlined digit? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAAiCAYAAABlRa5TAAAIUElEQVR4nO3dW0hUXRsH8P9MojPamDM1iqQdCDXFFNJKa6SyIgairIuMDCoLHbwoK7KLLKQIwsTDRXYC86bU0hsJmlKi1KSbIbMateNIWohNTWmWedjvhZ/rm3lHc8x5+14//j/YuNfaz372mrvHzdprySRJkkBERERERG4h/18PgIiIiIjo/wkLbCIiIiIiN2KBTURERETkRiywiYiIiIjciAU2EREREZEbscAmIiIiInIjFthERERERG7EApuIiIiIyI2cCuzm5ma... | [
"500",
"5,000",
"50"
] | null | 0 |
math | grade-2 | write-subtraction-sentences-to-describe-pictures-up-to-18 | false | true | Which subtraction sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAfQAAABkCAYAAABwx8J9AAAXBUlEQVR4nO3dW2wc130G8G9md7nc5UXLOymRFCmKoiTKlighFBnLbmI39SVJ3URKgUaBzaJAgaJFgRZ5adCifSrQh6YvQds8JCbSsEARC2kMJ03Q+hZZ4cUx1SqUJd4piRLv5HKv3Ov0Yc0dzs6SO7szQ46E7wcY4Dk7l/OBBv+a2TNnBEmSJBAREdFjTTzoARAREZF+LOhERERPALupR9+KAUs+SPPrQCwBoaUaqD8EFDtMPa3hmMNamMNamMNamMNa4knAFwa8ISC... | [
"13 − 4 = 9",
"12 − 4 = 8",
"14 − 5 = 9",
"13 − 5 = 8"
] | null | 0 |
math | grade-1 | match-analog-and-digital-clocks | true | true | Look at the analog clock: Which digital clock shows the same time? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABX4ElEQVR4nO3deVib15k3/q8keARYAixhg+QF4QUSG2ISPEntJgWS1E4ncYyzzRsnHeMu6a/TmQY386adaWeM25l32rd9a9wlna5RurhbXOPiLqZJLZqpaVMTi2DHBjtGeBFgIywQZhEI/f4gUgVoOdoQy/dzXVzG0jnnuROLi1tH93MfmdvtdoOIiIiIiGJCnugAiIiIiIjmEybYREREREQxxASbiIiIiCiGmGATEREREcUQE2wiIiIiohhKSnQAlHiu8RGMjQ/7fA1... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA5oAAAEJCAYAAAD1mFhPAABiA0lEQVR4nO3dfVzbZ70//le4+XDTBGhCC0lvEtoVthZWNnY2WzeBbbbzbF3p1m3fdfOU6jZ/Hs+x1Pmdnq8eS7fj9+g5akE986tTx9QzrbYrk6orbja4Y9FZ1jDoDbRrQ6EJtIQGQrkJhPz+YInQ5ubKHQnwej4ePArJ+7qud9ewR9657mROp9MJIiIiIiIKC5lMFu0UiKIuLtoJEBERERER0dzCQpOIiIiIiIjCioUmERERERERhRULTSIiIiIiIgorFppERER... | 1 |
math | precalculus | outliers-in-scatter-plots | true | false | The two scatter plots below show the same data set. Choose the scatter plot in which the outlier is highlighted. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUYAAAFGCAYAAAAW1zbwAAAnyklEQVR4nO3df1BU18E38O8uPxYNu8hWcdSgO3HRYCQakSVE932jT9zkSfNMm7wxwfwupIklRW07tqZjRuqT2tloncSoVacpzbSl0Zho8uS1sXkbLS0ibEKwApoAdSvR1EUXhI3sL7nvH1dWuOwq4NkfwPczk4F79rLnrMYv595z7jkqSZKkf3uBpktA52XAL4GIaFSJVwHaOCBjLDAxEVD92yNJ1R3RbhYRUWzI1QHxjZfkg0mJwMyb5NQkIhpNOi8Dn38NfOU... | 0 |
science | grade-6 | use-scientific-names-to-classify-organisms | true | true | This organism is a barred owl. Its scientific name is Strix varia. Select the organism in the same species as the barred owl. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOy9d7hfVZX//9rllE+5NZUEQgghCS1AhNCRYgHp6KjgoA46oog4Moqo4yjqqAOIBVFRaSKCoiJiAZQqNRBKQk0gCek9995PO2WX3x8n3B+hoxmd4Xtez5Mn+bR99tlnn5O1136vtYT33htjcM5RUlJSUlJSUlJS8rcgpURr/Y/uxv/TyNK4LykpKSkpKSkp2Vw45zDG/KO78f80sjTuS0pKSkpKSkpKNielffmPRf6jO1BSUlJSUlJSUlJSsvkoDfySkpK... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6IAAADMCAYAAABp7h4wAAEAAElEQVR4nOydd7xdVZn+v2utXU65/d70QkgCCTWI9KaAKEhXLOBg/4ki4sgoMpZR1FEHGCyIitIsCArKCBbACgaEQCgJNUACKaTe3HbKLqv8/tjnnHvuTQJBURznPJ/P/eSUvddee629T/az3ud9XuGcc1prrLW00EILLbTQQgsttNDCXwMpJZ7nvdzd+D8NIcTL3YUWWnhByBYJbaGFFlpooYUWWmjhpYK1Fq31y92NFlpo4R8cXouEttBCCy200EILLbTwUqL... | 2 |
math | pre-k | subtraction-sentences-up-to-10-which-model-matches | true | false |
Which picture shows 7 − 6 = 1? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAdoAAABKCAYAAAAc9ZVYAAASuklEQVR4nO3dfXAcd33H8ffuPZ9Oz7IkW3527BgS7DhNLIu4oUN4CiGFIaadaWKjTBlKGcIwPE0fmPLQBzpTOmRKZ0qZ0igxJtAmBEicAOGhAQfJTmLHYGNbthxblmM9S6d70N3u7W7/OOt0J92d7mllWXxfMxnPPv8+mdH3d7v7213FsixrUINzUQgZkLAQQgghRImcClQ7YLMfWtygDMYt68jUtW6WEEIIsfy014DzbDQ5sdINN1Yle2EhhBBClCZkwJkIXNG... | 2 |
math | kindergarten | represent-numbers-with-shapes-up-to-5 | true | false | Which group has 1 circle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAEcCAYAAAAV9AvgAAAIeklEQVR4nO3dX6jfdR3H8ffv7Jwz9+cc3aZOnWvqqvkviwwXWcIM/5QIhdaFC8I06CpC6sogIugiiS4ErxJFWhdlgQ4hVxpUREoWidQ2c1tuc1vbmjs7O9vOn/26OG5kY2F4zuv7276PB4zt7Gzfzwt2zpPf7zvO73S63W5393jV38eqDk1VTXYLYEb0d6qG5lS9b37V0sGqzu5j3e6LI03PAs52q4er+l8dm37j4sGqVQumawQwEw5NVW06XLVrvGrzWFXfyOT... | 0 |
math | kindergarten | different | true | false | Which is different? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAJDUlEQVR4nO2d/VcUVRjHvzs7L8vu7CIvgksRBwERDLEiQ0MFDlhmacif2TmdY/3kCUQOlhWlhRUvkpYrCLT4wjKz7Ov0w7SGxhLM3Hm993POHg8HduZxPvPce+e+TUDTNG0lCyyqQKoA5DUwfAQfAKJBoC0M1ItAYCWjad9vOB0Www7eiwH8PVX/IS4C7RH9bmD4h1QBmFeAx1lgQQW4jbz+Cybbn0SDulsA2CwAXGHbLxj+pOQ2pwGcs6Ew7IYJpwwmnDKYcMp... | 0 |
math | grade-1 | times-of-everyday-events | true | false |
Wendy is going to work. What time is it?
Choose the more likely time. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAc80lEQVR4nO2de3RU5b33P3vPNZmZTIBkkgBJIBOgEkhARWuCWqqAWu2qQKWtgnat05bq8ZxXAT2rrSha+1ZA7bsE0de1zotAL/aItNUeBXRREThHkQMTEq6TQBI0MxPIbWYy1733+8eQIUMCydwSLvmsxSKz9+zneWZ/9/Ps5/J7fj9BURTFEQR7F7glCCsMcxWhFsCkggmZkKcFwRFQlC86h7pYwwwGN2eB+kRX5EOBFiYZIk/DMFcPbgmOeaE5CMe7QOwMR04... | 1 |
math | grade-3 | match-analog-and-digital-clocks | true | true | Look at the analog clock: Which digital clock shows the same time? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABUQ0lEQVR4nO3de1yT99k/8E84hYOQRDlbTcBWBa3gEbWWQz30YK04223t2oF76tp17Yrb2u35bSu47vCs7Sau7Z5uto9Y29m1tWKtPXiMeGixisEDiFUIigICJYBCwvH3BxI55HAnuUMCfN6vF6+G5HvfuYrkxZVvrvu6JF1dXV0gIiIiIiJReLg6ACIiIiKi4YQJNhERERGRiJhgExERERGJiAk2EREREZGImGATEREREYnIy9UBkOu1tXagzdCOVkM7Wg0daDW0o83... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA5AAAAEJCAYAAADiusiGAABe9klEQVR4nO3de1zUdb4/8BfX4SLMjHL3MgOWChrgFbUCzFtlJq7Vrm0suJvd1jbcLfecs1vgtnv2bLYrbnZOm/UTs9a2zcTMyjuSWljiQApiAoOigGDMgMAM198fyMRtZr4zzI3h9Xw8eAjf+Xy/33c4Y/Oaz82lq6urC0REREREZBEuLi72LoHIalztXQARERERERENDwyQREREREREJAgDJBEREREREQnCAElERERERESCMEASERERERGRIO72LoDsr621A23... | 2 |
math | grade-7 | apply-addition-and-subtraction-rules | false | true | The number line shows two unknown numbers, y and z. Is y–z positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAIqklEQVR4nO3db2wT5wEG8Ofs+Bycfw7BIdEWFI1lm1K6lBBCwiKaiS9dU0rNyCTWCqWDocFCV20f6KZ+WUcj8aHSykADiaKJlYhIbaBDo5s2aSRMVf5DqJdUDWuyIErA5F+xndhn3+2DYycZCUmH8es7P79PvrOQHum1zw9v3rtX0jRNA5GONTY2QpIk7Nq1S3QUihOOefLhmBORnqSIDkD0qG7evCk6AsUZxzz5cMyJSE+WXbAVRUF3dzfa29uRm5vLWYQEcntCxen... | [
"positive",
"negative"
] | null | 1 |
math | kindergarten | subtraction-sentences-up-to-10-what-does-the-model-show | false | true | Which subtraction sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAV4AAAAyCAYAAAAUarOPAAAQbUlEQVR4nO2de4xc1X3HP/cx79nZt/ED47WxaxvcUgjY3agUApiSFBpQqYCahG0eUqs2RaiK1P7VqmlTqZFaIqQ2RUlZSFCaJkYJSdqArTguggWT2hgcsFmzeO21vXh3Z2dnZmfuzNy5t3+cmZ2ZnefOPrxzfb7Sau/znPOZ87u/e87vnnuuYtu2jZSUlJTUikm93AWQkpKSutIkHa+UlJTUCks6XikpKakVlnS8LaL3T394uYtQpmbKJDmWT5JjdalWmfQVLIdUkxp... | [
"7 − 6 = 1",
"7 − 4 = 3",
"7 − 5 = 2",
"6 − 5 = 1"
] | null | 2 |
math | grade-3 | identify-two-dimensional-shapes | false | true | What shape is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADWCAYAAADrRvVcAAAPaklEQVR4nO3d3Wtc95kH8OfMmyTLL3K03abddilkCWwuDJukCezd/hm7sPsHJiYXDjEGu1Cci0BCc5GQJWWbBJoUxrJG1oxG0mjezl4obpPWtTWaM3PePp9r++jBZtB3nvM9v5OkaZoGAACQiUbeAwAAQJUI2AAAkCEBGwAAMiRgAwBAhgRsAADIkIANAAAZErABACBDAjYAAGRIwAYAgAy18h6AfKTjNMb7sxj3pjHen8akN43x/iyu3dqMm/++nfd4AAClJWBXXDp... | [
"triangle",
"hexagon"
] | null | 1 |
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 |
science | grade-8 | compare-magnitudes-of-magnetic-forces | false | true | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | "iVBORw0KGgoAAAANSUhEUgAAAcgAAABdCAYAAAAhffauAAASCUlEQVR4nO3de3CU9b3H8fdes7lfIFxigqBBKKAHvJRDw1GpKTlJpaBUZXpsKyLFeilzOp4zdERLR6tibTViBUVzkLFFsZQpVjx2ihPrgXGgGeUiNwEJlwQEkk1IyIa9POePkEhgSbKXZ3eTfF4zzJjkeZ79rc/vs999fr/nYjEMw0BEREQ6sca7ASIiIolIBTIGPvvsMywWS6d/TqeT0aNHs2DBApqamkLa3ve//32Ki4vDasv27dsZPXo0WVlZYa0v0tslSh537tz... | [
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1."
] | null | 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. Martina was using steel to make rusted sculptures. After building each sculpture, she caused it to rust by placing it in salt water for eight hours. Martina wondered if steel would rust faster if she added vinegar t... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAELCAYAAACyM7+LAAEAAElEQVR4nOz9ya8tWZbeif12Z2anuf315++5+/MIz4zMrGQmM5glZhaLFFSkJAgokYIESQOJoATUoEb8FwQNNNJA4qggQMX/oAQUCiyxJIoDKdkALHZiRHaRXTQe/vz1tzuNNbvTYO1t51yPTFJikfQUQAPua2537JjZXnutb33ft9Rf/at/NfNvj397/Nvj3x7/f3T8tb/2176W17UA//j//n8jhED2E1YbLs5OODs9wWrDNA1s9zum4Bl9YggenzJTjviYCSnSaot... | [
"the steel squares soaked in salt water and vinegar",
"the steel squares soaked in salt water"
] | null | 0 |
math | calculus | identify-functions | true | false | Which of these relations is a function? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAATIAAAE3CAYAAAApC812AAAUjUlEQVR4nO3da2xb5eHH8Z9zcZz0ElMoCWxlMAWSUWiTUtZEleDPVCE8SLcyoaExCQ2VF5UmXiBerG0IaUnavqh2Z2gSmlgrxJBQ6f5FKhqMapNYUqDU69ou7io1LH+VXIA6CakdJ875v3COkzjuJY2Pjx/7+5FQ45PknIfU+fY8vpzHY1mW1ReTzl6URuLShCUAyGklHmlJsXR7hVTllTx9Y5b14bDbwwKAa7NuqVTyn4uJGzd5pdpFicoBQC4biUuhUemzmHT... | 0 |
science | grade-5 | identify-magnets-that-attract-or-repel | false | true | Two magnets are placed as shown. Will these magnets attract or repel each other? | "iVBORw0KGgoAAAANSUhEUgAAAOgAAAIfCAYAAAB6oZDwAAApa0lEQVR4nO3deXhcdb0G8PcssySTpFm6pOmaNGmaAt0rdEtBpYBYECqyXBY3RLyCV2VTcQHxoizK4lXkgopCZV8E9GrR0pbSAulCF0p3SpckbbOQZKaZmbPcPyZJk5Jlksw553fOvJ/n6dNCn3bOTM87399+JNM0TZBwtraYeD9sYlfEQGMcaNFNhHUgopsIa0CLDoR1E5G2n1t0oElL/NkcFchSgJAiIbPt5ywFCKlAZvuvFQl5PqA0U8akkITJWZKzb5i6JTGgzjk... | [
"repel",
"attract"
] | null | 0 |
math | kindergarten | represent-numbers-up-to-10 | true | false | Which group has 7 rectangles? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAEcCAYAAAAV9AvgAAAFFElEQVR4nO3dsW5UVxRA0TO2oSCAEEWifECSjtYV9P5iPoAKSrqE9CENQthYgmC9FCOkWIpc2ftZfmtVMxrp6pxma251d8uyLO+/zvx5PnN6MfNtGYBrcbSbeXQ488uDmZ/uz+zef1mWN5/WHgu4644fzxy9O99/+fn+zG8/7GsEcB1OL2Z+/zzz19eZP85nDj592/8gNsB1e3S4b8vMzNnFzMHFf34AuG7f2/LPMnOw7ijAlggOkBEcICM4QEZwgIzgABnBATK... | 0 |
math | calculus | identify-graphs-of-continuous-functions | false | true | Is the function f(x) continuous? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AABns0lEQVR4nO3de3RU530u/mfPTTO6MUISkiyQMMZgC0vYYLBlI0MKsalJSCCldnocx2mb1ZPjXNqT9Jc0K81aJ6FeOU2drCROjttT13aanKRx4sQxWMY4yIBFMCCDQALbQgYhIXQZaTSa677M3r8/xMgIdJlB76vR5fmsxZJmz97PfDXM7Pnud97Zo1iWZYGIiIiIiISwpbsAIiIiIqLZhA02EREREZFAbLCJiIiIiARig000h+zbtw+LFy/Gli1b0l0KERHRrKXwQ45... | [
"yes",
"no"
] | null | 1 |
science | grade-3 | natural-resources | true | false | Which of these pictures shows a natural resource? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAV4AAAElCAYAAACszooYAAEAAElEQVR4nOz9+ZNlyXXfCX7c7/q2eLFHZEbuVZm1JKpQBRCFlQRAgAu4SBQpSkJzRGpISTOyGRsz/RMzmpa1xsbGNJyW2rplJjYl9VBDCqRIigSxFgDWllXI2rOyKiuzcos93n5X9/nB3e+7LzKyqtRk/4YLREVkvPdu3OvX/fg53/M93yOe62n9UAs6Hj86fnT86PjR8aPjr/EYlPDmCO5ksODD5+bN7+WPjO6Pjh8dPzp+dPxvc3Q8eKhlfh6W09/LHxndHx0... | 1 |
math | grade-2 | identify-halves | true | false |
Look at the colored part of each shape. Which shape shows one-half? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAQ0ElEQVR4nO2de3STZZ7HP2+Spi00SYEWqKX3OyBgZdTVMwgqcnEUCouCt3FUHHfOzNmzc9uz58ycs+fM7OwfO55Zd2eOVjgqKl7GFRVBkJtaQG5yK9BQ2kBLKb0SmqRt2jTJu38kb0hpS5s2Td4k7+efpnnfPO9zzjfP5fd7vs8TQRRFsdkBtd1gc4FTRCGK0AigU0PBBJimBaG5VxSPWsNdLYVQcLceNDXdnn/StFA00fNtUIgebC6o7oImB1zoBpXV6bmgiB2... | 2 |
math | grade-3 | angles-greater-than-less-than-or-equal-to-a-right-angle | false | true | Is this angle greater than, equal to, or less than a right angle? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABcCAYAAABUbcLiAAAI60lEQVR4nO3d32/ddR3H8Xd/brTd2q3tTjfd6GAqS9wWsRsZ62ATExIgRiMYJJF74Q9QuFCv4IIbYiIaL7wBJPFixgQUglNgLahsUysEQnSwDUrP2rGf7X503fHitF27nu6c055v18N5PC7POfR8Fm6e+eb1/Z6qTCaTCQAAoCSqr/cBAADg80RgAwBACdUm/QUXT47G/sf74shL/TF6ajRufujG6Hpic9S31CX91QAAsOCqkt5gv/bQW3H0j59Oe+2m76+LHb/sSvJ... | [
"less than a right angle",
"greater than a right angle",
"equal to a right angle"
] | null | 2 |
math | grade-2 | fractions-of-a-group | false | true | What fraction of the shapes are squares? | "iVBORw0KGgoAAAANSUhEUgAAATEAAADeCAYAAABVADeLAAAJ0klEQVR4nO3dPW9URxsG4IdXGCl8K1IsICAWJCiQkihSpLiDKGUadynjn5CfQP5JUqZJmxJRhQJFEYnSpKDCAheOwZZXwqvdt0BLsPHHsc+cmTPe66rcePY5I/vWrM/tPScmk8kkACr1v9IDALQhxICqCTGgakIMqJoQA6omxICqCTGgaifbfPPnv/4Sf6ytppqlU/fmL8eDr78pPQaQWKuT2L+vX6eao3NPN9ZLjwB0oNVJbOnm7fjhr9/jyvnz8cmlK6lmSurP58u... | [
"5/8",
"10/12",
"8/12",
"8/10"
] | null | 1 |
math | grade-2 | write-subtraction-sentences-to-describe-pictures-up-to-18 | false | true | Which subtraction sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAfQAAAAyCAYAAACqECmXAAASfUlEQVR4nO2dW5AcV3mAv577fXZn75JW0i5ay5Jly5JtSWvAJqYSYbABR8ZJlQkWBRVIiocE8hIeqEolUAUOSYqqJBSQxMYYB4ygYkIogi1jE1tGtoQcy5ZWWmlXWmnvs7tzv3Z3Hlozs629zc70yPLm/552znT3/N/8Gv3d5/Q5rei6riMIgiAIwjsa29sdgCAIgiAI9SMFXRAEQRDWAFLQBUEQBGENsOYL+pnBobc7hAXUEpN4NA7xuL4Qj+sL8bi+WC4mxzWM45r... | [
"10 − 9 = 1",
"11 − 8 = 3",
"11 − 9 = 2",
"10 − 8 = 2"
] | null | 0 |
math | grade-4 | angles-of-90-180-270-and-360-degrees | false | true | What is the measurement of this angle? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABwCAYAAAAkAwevAAAEg0lEQVR4nO3dP2ijdRzH8e8jLgqe+1Hn1p5gQUTqJi1Yt4L0bpK7pdzq6h0OdhAcDhSnow7WLRVSDodYTBwTEIcUBL25abcI/UM7Pg5na/WopvA1zxPu9YLC0ycdPjTLmx9PSFGWZRkAAECK56oewOVODg7j5OCw6hkAAFyBwK6x3mYzepvNqmcAAHAFhUdE6uujN9+Joiji059+rHoKAAAjcoJdU/1WO37f24/hYC/6rXbVcwAAGJHArqnuhUdDuh4TAQCYGAK7hoa... | [
"360°",
"180°",
"90°",
"270°"
] | null | 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 | [
"iVBORw0KGgoAAAANSUhEUgAAAMwAAACkCAYAAADbhcHFAAAgdUlEQVR4nO2deXRc1Z3nP2+pVSXJWqzVlld5xTE7BAg4OEBMICQkHZJOJwPOMod0D93TOd0kZDnJkKSTSdMzmZOFSboDCRlCCCGAE9MsBrMFMIuxjW3ZsiVZsva9qlSq5S3zx62SSrtKKqlU0v2coyOBqkrP793vvb/t/q5i27bdFoVTIQiYYNhIJJI4ugK5GlR7odQJSlvEtg/4M31ZEsnC55I80GtD4j/KnbAxR6hJIpEIAiacGIDWKJwMgeo3xC+kWCSSseR... | 1 |
math | grade-5 | identify-trapezoids | false | true | Is this quadrilateral a trapezoid? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADcCAYAAABK3dY6AAAj80lEQVR4nO3dfZQkdX3v8U9VVz/3PO887M7OwC7sAi4gKChqNCaRHLzhJiLJPebcXG9MeJAcDyYmJohykhwiekg0SjxRUbwek3PNPYlEEm40aqLRqwFBHpYn2QdYdnZ2Z3Yeeh76obq7uur+0UPXzO6yOz3bPdUP79dfVU739Be2Fz9d/anfz/A8zxMAAACAujCDHgAAAABoJwRsAAAAoI4I2AAAAEAdEbABAACAOiJgAwAAAHVEwAYAAADqiIANAAAA1BEBu4Olv76... | [
"yes",
"no"
] | 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/t0lAAAoQElEQVR4nO3dfXTU5Z338U9CwDwNhGBCJjEaSALRkxzJJLoRzoZFe0SEuFt7ulTd410rqahdhe7ZFrR604o27dEVrKShUOsDPu2m3KdILR5FAWV5aGagJ1FiEpOgBpKgIWTyBAzM/UfKSCAJCVyZ32Tyfv3F/K6B7/cqTueTi+t3/UK8Xq9XAAAAAIwItboBAAAAIJgQsAEAAACDCNgAAACAQQRsAAAAwCACNgAAAGAQARsAAAAwiIANAAAAGBRQAbu7u1vd3d1WtwE... | [
"negative trend",
"no trend",
"positive trend"
] | null | 1 |
math | grade-3 | identify-multiplication-expressions-for-arrays | false | true | Which expression describes this array? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADsCAYAAABOp9GXAAAg9ElEQVR4nO3dX2yV15nv8ef13vY23uBdvG1vQ3DirVDiQL3Z+QdNpZqJG2hRMhdFOuS0yhTOiQIjRaMwEuWURsloEo0yIlyEI1UzJCcdck5u4IJeDLloUjXNTZNelH8ZSApE+UNJAynBIS7EYHufi8gVkQDb77PWu9Z63+/nktjvetZPkfbjvda7VtRoNBoCAAAAwIgm1wUAAAAAaUKDDQAAABhEgw0AAAAYRIMNAAAAGESDDQAAABhEgw0AAAAYFGSD/avT+12XEDT... | [
"3×5",
"7×3",
"7×5"
] | null | 0 |
math | grade-7 | 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? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAA/9ElEQVR4nO2deXhdVbm437X3PmPmJp2hFChlKLRNQpnaYkG5iFe9IlD8oTSNoCAOoBdU9IqFq6joVcQrilKSlNGCouJ8mbSlZWiTUGhRKFCgc5tmTs6w91q/P/Y5PdM+U5Imp+S8z3OeNuucvfe3h2+vtb71DVCkSJEiRYoUKVKkSJEiRYoUKVKkSJEiRYoUKVKkSJEiRYoUKVKkSJEiRYoUKVKkSJEiRYoUKVKkSJEi7xLEWAtQxKZpAVOEyVKAcJhffepl9oy1TEW... | [
"1\n12\n of a full turn",
"1\n9\n of a full turn",
"1\n13\n of a full turn",
"1\n11\n of a full turn"
] | null | 0 |
science | grade-2 | identify-solids-liquids-and-gases | true | false | Select the liquid. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAAd10lEQVR4nO2dyW9cWf3oP/fWrXmeXJ4dO4mHxLPDg2760fq9xwq999ggsWj1BnbNhg2oJViwQEADi5ZavWEBUot/AD0kJPr3eyBBQzexHTuO4yGT56nKNc9V9963KFfFSSd0ekjqln0+kpWqG9fNufYnZ/iec75Hup7S9SEnuE0IBC+UjAprOdgvg1+BV3y167IQUtAs3CYYctZeZ9WH12UhpKCZ1P2r6A+vyc0pikDwdISUAsMhpBQYDiGlwHAIKQWGQ0gpMBx... | 2 |
math | grade-2 | cubes | true | false | Which shape is a cube? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAV1klEQVR4nO2d3W/bVpqHf5JISZRNyZZcSVvHsd00jrtxJunAzUcbTAq0QItmBwl2LnbQq/5rvSkwN4NmZlNsgQ2QzCZbN/Egzjhd2LFTf8UdWbVkS7RFUSTFvTg6tGQp8RcpktJ5buzIikzrPHr5nq/3+AzDMDIVYLEESDqgGWAwXAfnA8QAcDYCpIKAL6MYxuOi05fFYByeK1GAWyiRf/xLEDjXQ6xmMNyGpAPzu8A/K8CLEuAvauQHTFqGmxEDxFEA2NEBv17... | 1 |
science | grade-7 | identify-how-particle-motion-affects-temperature-and-pressure | false | true | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | "iVBORw0KGgoAAAANSUhEUgAAAmwAAAGZCAYAAAA0Im0SAACPnUlEQVR4nO3de1yb5f0//lcOQIAEaDkHWnoiqT1RSXpandA6nVpSnVoV6mm/KdGd1IKbm4eG6aaboPtMp0L9Tq0KujoPQNWpa6lV22poSw+2oecWQmnLMZwhXL8/aG5ycyinHO+8nw8r5M6d+7qSwrvv+zqKGGMMPqyu7gJOnjyFzs4OiEQid1eHEACAn58foqKiMXXqVHdXhQgYxT/iiSj+DU3q7gq4U29vL2pqasBYL/z9/d1dHUJ46uouIDY2Fn5+fu6uChEgin/... | [
"sample B",
"sample A",
"neither; the samples have the same temperature"
] | null | 0 |
math | grade-3 | identify-faces-of-three-dimensional-shapes | true | false | Which shape has a circle as a face? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAXsElEQVR4nO3daZAc5X3H8e/T3TM7e0g7OtBqkaWVcMRlIS67QImBOAYfxEfABkxAVKVinEoV5EVwXEksO4dxlRM7KVfAVYnxixhhY0OAGGwowGUbGYdbIHFZyOhAiNW9s/fuTHc/edEzq92VxF7d/fTx/1S5WLy703+76rc9093P81Naa72vCr8bgn4PXI0QIiKOgnk2rG6BjiKofaNaP9tneiwh8ueC+eBsHwr+pbMIp7UG6RRCRKPfg22D0F2FN4bA6nODb0j... | 0 |
math | pre-k | spheres | true | false | Which shape is a sphere? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAZK0lEQVR4nO2dW3Cb5ZmAH1tnS7EkO5FE7Nhu0ljsbLDbTTYxFyEc2nQGSHYvyF4USq843HRnYMrdTpl2etdO6SUUbraBXizcrFNgOJMws3FSA5WTnUV2k1qOCJISWZJlnSV7L379P5KtJDofv2eGMTr+X6zHr97v/U59m5ubm740/C0O0RxkNxEI2g51H+xQwf4BsGuhz5fa3Ly41upmCQTlc2QQ1Etx6cZdWnAaJasFgnYjmgN3DL5Jw2Ic+tey0gNCWkE7s0M... | 0 |
science | grade-6 | compare-magnitudes-of-magnetic-forces | false | true | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes and shapes. | "iVBORw0KGgoAAAANSUhEUgAAAfQAAACtCAYAAABGII0BAAApH0lEQVR4nO3deXhU1f0/8Pdkkslk3yEJIQlZCJAgYQ2UCEERiFgIQlAUF4qIrQb8tbZuSKFYW9QWaWuxoghIBaTIogIqyKIosskugQAhQAghy2Sdfeb3B99E1mQyc+eemeH9eh4eTJh7zmfGe+9nzrlnUVitViuIiIjIrXmJDoCIiIgcx4Tuxg4cOACFQnHNH5VKhS5duuCFF15AfX19m8obN24chg4dalcshw8fRpcuXRAaGmrX8URE5Bhv0QGQ4+bMmYPs7GwAgFa... | [
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is smaller in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs."
] | null | 0 |
math | kindergarten | rectangles | true | false | Which shape is a rectangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAACf0lEQVR4nO3aO24VWRhG0b+uH0I00BnIA2hgBgyOmMkxAl45JrXBaty+KoISUkcNEta+yL1WVKWTfFJtnaiWdV3X8+uZD1czl/uZm3Xglx0vMw+PZv66P/PkdGY5/7qury8OPYu77MWjmeP3V9vL2enMsz+2CuFXXe5n3n6Z+Xg98+5qZndxsx2IjNv08Ghrambm835mt//XAdym7039s87sDjuF/wuhkRAaCaGREBoJoZEQGgmhkRAaieNDD/iRl29u5uPffin... | 0 |
technology | grade | logo | false | true | This is (part of) a (former) logo of which computer related brand? | "iVBORw0KGgoAAAANSUhEUgAAAV4AAAEsCAYAAACLwdvQAAAySklEQVR4nO3deXzU9b3v8ff3N2smmWQySSaZbJNkEgKEHVmURaFQthAS0tar9/S0Puxtb70eq4KshVJQFlm0au3j9Lan7ek57W3PQRABRRQX3BBFRFYhe0LIvs4++X3vH4BFyTJJZuY3v5nP8y+RIfPJ8nvx5beyT0+eByGEkOARpB6AEEIiDYWXEEKCjMJLCCFBRuElhJAgo/ASQkiQUXgJISTIKLyEEBJkFF5CCAkyCi8hhAQZhZcQQoKMwksIIUFG4SWEkCCj8BJ... | [
"Razer Inc.",
"Microsoft",
"Maxtor",
"Oracle"
] | null | 2 |
math | grade-1 | addition-sentences-using-number-lines-sums-up-to-20 | false | true | Which addition sentence does this model show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABhCAYAAADsidaRAAAWuUlEQVR4nO3de1BTZ94H8G+4SZG7gkhXQdgR1FJQqYjaKna1dXtRW3W106m4tXbt7rqrO461dkasbLXbtatv7XTqulPWVRxvC9h2efUdW8BZ5CKCVh20SoNiwAoYJNwjef84JhCDkMAh55zk+5lhEpI0/f1I5Hx58jzPURkMBgOIiIiIiEgULlIXQERERETkSBiwiUg0n10CPPcCL/6v1JUMjKP0QURE0nCTugAiUoaaZmCYJ+Dew5/l2nbgzRzg/24BHq72rsw2jtI... | [
"6+5=11",
"8+2=10",
"8+4=12",
"7+2=9"
] | null | 1 |
math | pre-k | spheres | true | false | Which shape is a sphere? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAX10lEQVR4nO2dTWwb153Af2+GFCnqw5Iox7Ys+aOOFDSA7SIF1g4WjRsD6cGB00PcW5JTgyzQ3QRtekrby6a7uTRoku4C26Z7WDunTX1YB/Ypa8cusHZ7SCMVSDaSF7Yj2bIjUaIsiRTFmff28DgjUqJl8fvr/S4Uh+TME+fH//zfx7wnlFLq7ipcT8CiC47CYKg7AgK6bBiOwI42EHdTSv35fq2LZTBsnSPdEJhI6Ce72uCxDm21wVBvLLrw5TJMr8J4Aqz7jn7... | 0 |
math | grade-8 | rotational-symmetry-amount-of-rotation | false | true | This image has rotational symmetry. What is the smallest fraction of a full turn you need to rotate the image for it to look the same? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAADdUlEQVR4nO3dv04UURjG4TO720wFFjZaW0ABlY034jWYeDkkXIM3YmMPBY1gICQsBdUm/Nm1sFLM66whe87A89Rk5kvY3+aECfOVAgAAAAAAAAAAAAAAAAAAAH/XPfUFP3x5v3rqa8JQXz9+e9LP9OQpLwbPjUAgEAgEAoFAIBAIBAKBQCAQCAQCgUAgEAgEs5o3f9O/LTtbuzVHoFHHN0flYnFee4y6gexs7ZZP7z7XHIFGHZ4cNBGIIxYEAoGg6hHrT6/7mzLp/Dv... | [
"1\n7\n of a full turn",
"1\n4\n of a full turn",
"1\n6\n of a full turn",
"1\n3\n of a full turn"
] | null | 1 |
science | grade-6 | identify-elementary-substances-and-compounds-using-models | true | true | Look at the models of molecules below. Select the elementary substance. | "iVBORw0KGgoAAAANSUhEUgAAANUAAAAiCAYAAADI15wiAAAGpElEQVR4nO2cT0xTSRzHv5C+UloLNILZpO1LIFHbYgxyEDx4Y0GMBq4cTNxQDXpQAurJgJqNUYytbqKnkj3KscSD0njbEMSYhsO24KUxT5psaEmBbmvbR8oesFhp6fs3bZ+b+SS9MDPf+U3Cl5n+5jfU7Ozs7IBCoRCjttoBUCj/N6ipKBTCUFNRKIShpqJQCENNRaEQhpqKQiGMRsngVCoFnueRTqfB8xkAAMNoUVdXB4ZhoNPpiARZafx+P758+YKVlRVwHAcAYFk... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAYQAAADMCAYAAABzwdRmAAAd2UlEQVR4nO3de5QV1YHv8W/VefSbpqVBSEOjKG8FRARMNJpcFXziJHcmYRmMd0QvJt7oUpOVuSvLx+jKa0bMzFzjZClm7iRjvLPGDNFwFUzEm+ggxCHtA5AoKC2o0EC/6Mfpc2rv+0dVnUd3Q78OcLr5fXodu7uqTp2qbbN/tfeuhwNYRCRv/tBsmV4GFZGTvSUivWv1YGcbfNwFVVG4aLQ/3T2pWyUyAikMpNBVRPy/U4AjXma6AkEkzxQGMhyEf6fJrD4iBYK... | 0 |
math | grade-4 | parallel-sides-in-quadrilaterals | false | true | How many pairs of opposite sides are parallel? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAhBUlEQVR4nO3de3SV9Z3v8U82OyEJSSAXCAkQ7gEv9UJVEIs3au3UVq3tmTOXOp3OnDmedubMtJ2jU0XrFW/t9DJdnZlOOzPtODPrjKejgOLYKoLiBdGioAiEWwgJJJAbIQlJ2Ox9/njA37Mjgexk7/17Lu/XWq71/VkaPra61sfven7Pk5NIJBICAAAAkBYR2wEAAACAIKFgAwAAAGlEwQYAAADSiIINAAAApBEFGwAAAEgjCjYAAACQRhRsAAAAII2itgMgjQ7tlJ6... | [
"no pairs",
"1 pair",
"2 pairs"
] | null | 1 |
science | grade-8 | compare-magnitudes-of-magnetic-forces | false | true | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | "iVBORw0KGgoAAAANSUhEUgAAAnYAAACtCAYAAAA9MjI8AAA2N0lEQVR4nO3dd3iT5foH8O+bvdp0pLtAKS2rCGUJKAJWAUEZogwVj4hbUYHDz4PzKOhxLxx40CMiLsAtsmRIobJHGbJaKKN7ZI9m/v6oRWabpMn7JOn9uS6vi7ZJnju17537fSbn8Xg8IIQQQgghYU/AOgBCCCGEEBIYVNiRi4wdOxYcx533X0JCAq677jrk5+f79FoHDhwAx3HYvHmzz3G4XC4888wzEAgEeOedd3x+PiGENCUUcp3L5cJbb72FnJwcKJVKdO7cGa+... | [
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1."
] | null | 1 |
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