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-2 | write-subtraction-sentences-to-describe-pictures-up-to-two-digits | false | true | Which subtraction sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAfQAAABkCAYAAABwx8J9AAAeGklEQVR4nO2de5BcV32gv3Pu7dvd0/OQNBpLI1keyXrYxkj4hV9VYBMwxg64YHHFiw1rVSD/UCQOC1VZEhbyR6ikKimKrTgxW4aNDBiKRHatX2zKCxgiG9lm/RSSkS1bki1r9JgZzXRPT/ft+zj7R8/0Y9Qz00+pu/X7qlSa7rn33PPNqfr97jn33HOUMcYgCIIgCEJHo892BQRBEARBaBxJ6IIgCILQBUhCFwRBEIQuwG5VweHR30EmSTCdJnP4CLHhVZhla4huvqx... | [
"19 − 4 = 15",
"19 − 3 = 16",
"19 − 5 = 14",
"20 − 5 = 15"
] | null | 0 |
science | grade-2 | identify-solids-and-liquids | true | false | Select the liquid. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAA1XUlEQVR4nO29aZAcd33///r2NdNz7jF7H1rJsi3JxrJNfIENxAbySyChKoRKgASS4kmSIqSohCTFA8hdqUqlKlwBigRyUCE8IeT/Cw6h8qNiY4ciPvAF+MDSrlbSXrM799Hn9/+gj5mVVtZKXkljq19Vo1n1dPf09Lznc30v8UhNyuuzkFdJSLisNDx4rgUrNgxrcPdQsF1JBJlwpcircH02+Lvp9bYriSATriSR/hzZ26ZcmUtJSDg3iSgTBo5ElAkDRyLKhIE... | 0 |
math | grade-2 | identify-multiplication-sentences-for-equal-groups | false | true | Which expression describes the model? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACHCAYAAAAslC4OAAApKElEQVR4nO2dSWwb2Z3/v1UsLuIiLqJNUaQko522DzkoQBsDX+1r4JsPQQzMaYLpaze6L7kEmD+QSxrJHNOYPv2DDP4D52Sgr3HfPAcngAPkYLudli1ROzeR4l5V/wPDUhX3pbZX7/cBhGaxpXpl8sMv36u3CaqqqiAIgiAIgiAIwhREpy+AIAiCIAiCILwEVbAJgiAIgiAIwkSogk0QBEEQBEEQJkIVbIIgCIIgCIIwEapgEwRBEARBEISJUAWbIAiCIAiCIExEcvo... | [
"6×3",
"5×3"
] | null | 1 |
science | grade-2 | identify-solids-liquids-and-gases | true | false | Select the gas. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAAk40lEQVR4nO2deXxU1d24n3PvrFnJwr4n7CiIKEvrUlHrLq5vq1VbbX/9VWv7ulKKC7vWBVBWEdyxSFvXuuAuikIIm7ITkhAIJCEJZJvMdu897x83K4ii4MwkOc/nM59kZm5mvmfmyTn3nPs954jsSin7x0OijkIRUapN2OGDohCkOOCMdvbjmhJSES0Sdegfb/9eYzY+rikhFdGk3r+wbHxMi04oCsXRUVIqYg4lpSLmUFIqYg4lpSLmUFIqYg4lpSLmUFIqYg4... | 1 |
math | grade-4 | compare-fractions-with-like-numerators-or-denominators-using-models | false | true | Which fraction is greater? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACuCAYAAAAMN3rwAAAuD0lEQVR4nO3dfVhUddoH8O+AGqA5g1ui6DqilZmpYK1l4gplpZgBbbtIjyZutmtbPaL25Eu7Sq+Kz5bQ2+qzBhi6RLmBqWipMAqWmsoIWFYojIoYmcyoOL6g8/zBnmkGEOblzDlnmO/nurquZIZzfuLd1dffued3qywWiwVERERERCQKP7kXQERERETUkTBgExERERGJiAGbiIiIiEhEDNhERERERCJiwP6P8vJydO7cGSqVCtOnT5d7OeRFWDtERERkiwEbwLVr1/C... | [
"4/5",
"4/10"
] | null | 0 |
math | grade-3 | compare-fractions-in-recipes | false | true | Does this recipe call for more baking powder or vanilla? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAHMCAYAAADvfN8VAABxeUlEQVR4nO3dfXzN5ePH8dc5u79jhrlNim6Zm+xbSIyIsL6UkrtvvhQ/dyH0lZssN+UbuakJJfUlEhVFQkgoYu6X22FuN9vsxmb355zfH2snxza2OceW3s/HY49H53yuc13X53OOzvtznetzfQwWi8XCHywWC2azmezsbOuf0WjExcUFZ2dnnJycMBgMiIj8VVgsFkwmE9nZ2WRlZWE2m3F2drb+GY1G/X9NRETsypAbsM1mMyaTiaysLLKysnBxccHDw0NfPCJyR7F... | [
"vanilla",
"baking powder"
] | null | 1 |
math | grade-3 | identify-two-dimensional-shapes | false | true | What shape is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADOCAYAAAAEw3WqAAAQ/klEQVR4nO3dbY+UZZYH8HN3VVdrNyLYy9oyMFstsm4n7A6YHQiwSvTVPiT7fj/BfoZN9tusZsK8wMyAJJCJkjAmSmBEGmEUFEfBmQBGkKa7Hrqq9gXOoAxgV/dddT/U75cYiRBylalK/+vc5zon6fV6vQAAAFIxlvUBAACgTARsAABIkYANAAApErABACBFAjYAAKRIwAYAgBQJ2AAAkCIBGwAAUiRgAwBAiqpZHwAeZ6ndu/dP696/F1v3fr34vf/2599f/P6fafd... | [
"hexagon",
"triangle"
] | null | 0 |
math | pre-k | what-comes-next | true | true | What shape comes next? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAD1CAYAAAAlI4EUAAAWm0lEQVR4nO3dTYwk5Zkn8CciPyozq7q6afd2Q4MxUmMZS5aQpbHn4PVyGWHNCSFfLLgNPpqLtcDFHmzs01x8mLmstHsc33ZnLqtd7c7F669ZdmUzNsywHjMyCHqhG6qB7vrIr4g5FNVd/V1RlRmZ+ebvJ1nI0JkR9ddToX+/8WZGVpZlGQAAQBLyWZ8AAAAwOQo+AAAkRMEHAICEKPgAAJAQBR8AABKi4AMAQEIUfAAASIiCDwAACVHwAQAgIQo+AAAkRMEHAICEKPg... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAz4AAAD1CAYAAACRDCAyAAAZrUlEQVR4nO3dTYwc55kf8KeqP6dnODOiGVKibFoAZdgGDAgO1t6D4wgIFjb2ZAi+GNJt5aN1MSL7Yq/8BQTYiw7ZS4DkaN+S3UuQIFks4PgzysLS2pJX8ZqBJIi0RFFDyuQM2V9VOYyGGn6zZrqru9/+/QAfRLKr3nn8oKb//bxVnZVlWQYAAJCELMtmvYS5lM96AQAAANMm+AAAAMkTfAAAgOQJPgAAQPIEHwAAIHmCDwAAkDzBBwAASJ7gAwAAJE/wAQAAkif... | 0 |
science | grade-6 | identify-ecosystems | true | false | Select the taiga ecosystem. This ecosystem has:
warm, wet summers and cold, wet winters
soil that is rich in nutrients
only a few types of trees This ecosystem has:
warm summers and warm winters
a rainy season and a dry season
soil that is poor in nutrients This ecosystem has:
long, cold winters and short, cool summers... | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAp8AAACtCAYAAAD2xRSHAAEAAElEQVR4nOz9efgsZ1nnj7+epZbeP9tZc7ISEgmbGHFcUEBBRnRcQEEuBBlUdBhHRgUHl0tHnREchhkvkEEcJCLoiBco+FNmXBAwCAYChBBA1uQkZ//svdX6PM/vj6equvtzThJQEb+m37n69Keru6qeeqo6/a73fd/vW3xg37nrO9BTLLHEEkssscQSSyyxxBcFIwOfnIAYls4tiecSSyyxxBJLLLHEEl9sjAwI55z7Ug9kiSWWWGKJJZZYYokHBvT8iw9+bg8... | 0 |
technology | grade | peripherals | false | true | What kind of computer peripheral do you see here? | "iVBORw0KGgoAAAANSUhEUgAAAV4AAAEsCAYAAACLwdvQAAEAAElEQVR4nLz9Sax1zZrnB/0iYrW7O/3bf9/9bt/lzaIybezELgqwyiWcIFkuBilgDAhLjJCQaAQMGBgY2BOE5IGNDRJiAChRDUrIVZnVUHYleZ03783bf/33vd1pd7f26iKCQaxYO/Y6+5zz3kzjONo6u10r2n88z/9pQmz00lqrMcbQtjXa1Fg0QhiE1IAhzxJiBGA4X73mz/7sh/yzf/bP+NWvfsGvf2RomoayLCnLkrqu0VoDIISgbVt8EULs/AdQSiGEQCl16yG... | [
"External Hard Drive",
"Graphics tablet",
"Ink cartridge",
"Floppy Disk"
] | null | 2 |
science | grade-2 | identify-solids-and-liquids | true | false | Select the liquid. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAAb7klEQVR4nO2dWYxcV7mov71rnqeeB7eHtrs9O+5WnDgRNzkSIBIiIRCvgQgpEjzxgBAIJJDgAR5AAiSCUBQJCSHxdu7l3qfLuTe246nddtp2HNttx7N7qnmuvatq7/Owq6onJ7Gdrqpd7fVJpe6udu9aS/nyr/lf0rm0ro95wGdBIGgp2Spcz8O8CiErvBw03peFkIJ24bPAmMf4Plddfl8WQgraSd2/sr78ntyeoggEn46QUmA6hJQC0yGkFJgOIaXAdAgpBaZ... | 2 |
math | grade-8 | parts-of-a-circle | false | true | What is \line{UV}? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADICAYAAACdx5VnAAAlNklEQVR4nO3deXhU9aH/8c9MlpmsEBICAQKEfeeyimAEF1AooBWrV4ulV6t00Yr9iVaKQhWXi7ti64KKeq1Ka71VcKnVBMEnIFwDQVCIJKxJSEISsk8yy++PlMOMSVhDzsnk/XoeH8/3nDNnPgnzx2dOvuccm8/n8wkAAABAUAg1O0BrsNls5+zYfD8CAACAlbSLgk8JBwAAQHthNzsAAAAAgJZjt9lsSk9Pb7Rh4sSJSkpKarR+7969stlsev7557Vy5UrZbDa53e5... | [
"chord",
"center",
"diameter"
] | null | 0 |
math | algebra-2 | domain-and-range-of-absolute-value-functions-graphs | false | true | What are the domain and range of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABquElEQVR4nO3de3xU9Z0//teZWzK5kZCEJAQSQC4aTFA0IgiKhaor1hZ6we23F7t+f63d2nb7+/76ffTR39rd7frj29/2sr+62nbddavud3+/fnWLtIKBokTBRLlECCQgxgAhAXKZZDKZ67n//kgnTUhCZpLzYS55Pf/Rmcx55c05M2fec/KecyTTNE0QEREREZElbIkugIiIiIgonbDBJiIiIiKyEBtsIiIiIiILscEmojHKy8vR2Ng4cvv8+fMoLi5GR0dHAqsiIiJ... | [
"domain: all real numbers, range: $\\{y \\mid y>0\\}$",
"domain: $\\{x \\mid x<-3\\}$, range: $\\{y \\mid y>0\\}$",
"domain: all real numbers, range: $\\{y \\mid y \\leq 4\\}$",
"domain: $\\{x \\mid x<-3\\}$, range: $\\{y \\mid y \\leq 4\\}$"
] | null | 2 |
math | grade-4 | angles-of-90-180-270-and-360-degrees | false | true | What fraction of a turn is this angle? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAA/CAYAAADaDb8WAAAKxUlEQVR4nO3da3TU9Z3H8XdCEgMhQSXrtpGquKKcFaW2BQp6IreCRRsBLXfBFRBpCyLaaJMoxwiokSoStVaJEokgLBcdKWahXM8hVrQlbOcBFmtaV3F1abmENBjo+e+DGE6435JMhnm/Hs05/5n5f2cefc7vfL/ff1wQBAGSJEmSGkR8pAuQJEmSziWHAvbs0K8pXvtGJGuRJEmSot6hgN3zmuu5a85k0kddyXMrXo5kTZIkSVLUiqvfg912ZAd2V+0B4JJ/acer9xb... | [
"1/2",
"1 full turn",
"1/4",
"3/4"
] | null | 2 |
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. | "iVBORw0KGgoAAAANSUhEUgAAAngAAACtCAYAAAAj+wKPAAAYhklEQVR4nO3de3SU5aHv8d/M5EoIyUACCQZBCBIJ1KCiIC4onEBAQEUuoRWsFFjYI4hUt2X3UAstLrX1HEpXq+kFKh7ZsES2PV4AKXKRWwukgHgLQoQCiZGYmWQSkjCZmfMHO9ncySQz8868+X7WYi0S3nnmGda8v/wm7zPzWHw+n08AAAAwDavREwAAAEBgUfBwhUOHDslisVzyJyYmRllZWVq4cKGqq6v9Gm/SpEnKzc1t0VyOHDmirKwsJScnt+j2AHA94ZJ3n33... | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 1.",
"The magnitude of the magnetic force is smaller in Pair 2."
] | null | 0 |
math | grade-4 | estimate-angle-measurements | false | true | What is the measure of this angle? Choose the best estimate. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABLCAYAAABKvvDBAAAIL0lEQVR4nO3db0xV9wHG8edSRMEKCf5JrhRjZ6S6mjYy65AXvBiGRcfEP/GSJtg4ozOmnWzOyhRbwZiida66abvUtlpHl4JW6HRTN3XRZqBGQ+tqVIyTSJSkFN29lYtS5OwFlaypRcBzzu+c7ft5QZCbnN8TXn25uecYsCzLEgAAAABbxJge0FsXa05p2/wXTM8AAAAAeuSLwN75i2JtmjNfqRPGmZ4CAAAA9CjW9ICeRMMRbZv/vC6dOCNJar35b7ODAAAAgAfwbGA... | [
"120°",
"90°",
"30°",
"60°"
] | null | 3 |
math | grade-5 | parts-of-a-circle | false | true | What is \line{FG}? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADJCAYAAABWm0bCAAAtDUlEQVR4nO3dfXzO9eLH8dd12a5ttmEzcjfD3MRoLYzMTe4jJBKJlNNRp9OJU5EcyZGKSuH0O6dzQlESEt1JibkXk7sNuRkyTHaLXe3+2u8PXLbmfjff7y7v5+Oxh+/3e32v7/d9cf3x3tfn+/la8vLy8hAREREREZfgZnSA0mCxWErs2Pr9SERERETM5JYo+CrhIiIiInKrsBodQEREREREio/VYrGwZs2aQi+0adOG6tWrF9p+9OhRLBYL77//PrNmzcJisZCTk1P... | [
"center",
"radius",
"chord"
] | null | 2 |
math | algebra-1 | multiply-two-binomials-using-algebra-tiles | false | true | Which multiplication expression does this area model represent? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFaCAYAAAAkQypLAAAbWUlEQVR4nO3dX2yd9X3H8c85doixiUkAl8TJgCaUf+1QiUcLomxT23RQoVZTpamtKlVIu6i00lYI7SLadom2SfvXCRUhoalrt3WldGLSRobF0obRpmVxSEnCnzSBuI1t7ED+2iSOzzm7oA24Sbs4+bmPT/R63Z2flfP7+snNWz89z+Naq9VqBQAAKKJe9QAAAHA+EdgAAFBQ5+kWh4anM3a4+euepe0t761n7RUXnPZnQxODGZ3aU3zPFd2rs7ZvXfHvBQDg7NR+8R7... | [
"(x+1)(3x+3)",
"(2x+2)(3x+3)",
"(x+2)(3x+3)",
"(2x+1)(3x+3)"
] | null | 0 |
science | grade-3 | identify-plants-and-animals | true | false | Select the animal. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAEAAElEQVR4nOz9Z7Rk13Xfi/52DpXTqZNznz6dc6MbaGSQAEGCmRQlUqQCJUsUZYV7LVnp2tZ1kC1fWVkiZdEMEkWJGQAFgMhAoxtA59x9uk/Op6pO5dp57/eh6ecx3oXfwDO/3DeG5peqsWqPql1j//Z/zTnXnGsLp+pRtDUGCYl/sn+y/0daM4AbbVh1ISPDsfTtcfGfwP0n+3+6JSTYGrv9vhX8j3Hxn8D9J/v/B/vvnHrR/xiT3+rAV57/Iq7TwXEcfMtD1CS... | 3 |
math | grade-4 | scalene-isosceles-and-equilateral-triangles | false | true | Is this triangle isosceles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADBCAYAAAD1lcd/AAAfUUlEQVR4nO3de3CU9fn38c/muASSkAMBggFhYkMxCiXkRwmCJRVUciJZsk0Vw7naxyP6QwdQqq32wWoFWw+0Tj2t4qSH2HYy08bWiGZ+nbTz5LFpJ52m86y6srKNYWHdGjYbEvL8AURQAtndJPdu9v2ayUjWe++9MvDHh4vrvr6mgYGBAQEAAAAYETFGFwAAAACMJwRs4CIcDoeWLl2qr33ta0aXAgAAIkCc0QUA4eyPf/yjrFarjh07ZnQpAAAgQtDBBoawZ88eXXv... | [
"yes",
"no"
] | null | 1 |
math | algebra-1 | model-and-solve-linear-equations-using-algebra-tiles | true | false | Which set of algebra tiles represents the equation
–
2x=
–
18? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAREAAAB6CAYAAACY0GejAAAHR0lEQVR4nO3dXWhbZQDG8eckbbOvNkPX2qItuDllfkxdN2Z7qU5wMkG9UfFK5oVXgrIbb7xTsWxMVAKCMHal4KZu4IUoY65tcOAHIspWdbXdbLtOrE3a0bTJ60Vs6dDMnL055+Q9/f9gbOnW/rOyPnQ5bV7PGGPGC9LPs1KuKC0YAUBFDZ7UnJQ2r5FuaJK88TljTk9HfbcAuGhni9QwNFu+0dEk3ba2vDAAUEmuKJ2ZkcYK0tlZKTG9UP4NBgRANZqT5b2QpHx... | 0 |
math | grade-8 | base-plans | true | true | What does this object's base plan look like? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEkCAYAAAAVa0b6AABi0klEQVR4nO3dfVyUdd43/A9ChMbDiGRIekIrq2yLSaeDGd63wD5ZmYideaWyG1CX0tMGKJ7tbimDul33vYCgp5Vgd2CdYl56vUTNB9pNRjcJBZZJ0cQwJsCBkHB4EBAHuP8Y5ggQkYdj5phj/Lz/WgiYH4uvF9/jy/f3/dj19PT0gIiIiIiIRDFO6gMQEREREdkSFthERERERCJigU1EREREJCIW2EREREREImKBTWOm1+sRHR0NOzs7JCUlQa/XS30kIiIiIsnYcYs... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6AAAAEkCAYAAAAxe1xWAAB99UlEQVR4nO39f1jUBbo//j8RIiR+jEiKqMu4sMK2UHgc1PBzBE57sjIRW/2k0ga0R3HTAhRPu7XIoG7fswGCHtcEewfUEfOj5y1qararjG4SCiykZGKYE+BASDow/BIH+P4xzit/AAIzw2tmfD6u61y7kjC3i51rntz3675tent7e0FEREREREZhY2MjdglEZmuU2AUQERERERHRw4EBlIiIiIiIiEYEAygRERERERGNCAZQIiIiIiIiGhEMoGQwtVqNmJgY2Nj... | 0 |
science | grade-5 | animal-adaptations-feet-and-limbs | true | true | Great blue herons fly long distances each year to find food. They have wings instead of arms. Herons are adapted for flight. Which animal is also adapted for flight? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOy9eZgdVbX+/9l7V9UZeu7Mc8gchkACyIyEOYBckQAioARELggISgRU9AIqYmS4IiqCCAh+FRBBpgtCrgiEEAghhBAyz3PSSc/nnKra+/fHrqruzkAaaMDLr97n6Sfpc+pU7dpVdfpda7/rXcIYY4IgQGtNihQpUqRIkSJFihQp/m9CSonjOAjf901K7lOkSJEiRYoUKVKk+L8PKSUyJfcpUqRIkSJFihQpUnw2oLVGftqDSJEiRYoUKVKkSJEiRdchJfg... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOy9d5gb5bn3/5mmupJ2tb1X77qsewVjg+nFQAgmgRTAaZz0ygnJSU5+CelAkjccEgIpkEAahBIIxVQDrrit6+56e+9FXZr2+2Mk7ZpqEnLIm1ef6+LCGo1m7nlmHq2+z90E0zRNTdMwDIMMGTJkyJAhQ4YMGTL834koisiyjCAI77QpGTL8WyJmhHOGDBkyZMiQIUOGDP/3YxgGmqa902ZkyPBvi5gRzhkyZMiQIUOGDBky/HuQ+W2fIcM/D/GdNiB... | 1 |
math | grade-8 | make-predictions-with-scatter-plots | false | true | Based on the scatter plot below, which is a better prediction for x when y = 2? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFhCAYAAABK/t0lAAAeBUlEQVR4nO3dfXCV5Z038F8gQjRpiCgvRQNqfEGQBJp1KyDZ1Y5rtWb64HZHHcGXKhoZ2z6zttjpdnfSndl1YdFumVpd0cGX3SnWXXlcn6eoO6UOrIV2mpUEarU0LBqXl2gLwaDEguf5Y9dss0AWOVfOzUk+n79y31fO+X2BGc43d65zn5JcLpcLAAAgiWFZBwAAgMFEwQYAgIQUbAAASEjBBgCAhBRsAABISMEGAICEFGwAAEioYAV7//79sX///kKNAwCATBSsYG/... | [
"6",
"10"
] | null | 0 |
math | grade-2 | identify-the-fraction | false | true | What fraction of the shape is blue? | "iVBORw0KGgoAAAANSUhEUgAAAQQAAABkCAYAAABgi07kAAAik0lEQVR4nO2dd3Acd3bnP93TE4AZDAY5JwIgCALMJMQoiVpJS1HaqJVWu/aeS/buOdbd2eUrh7O3fOX1nX32lUPdlstXW7bPt/bubUmrTWISKTGJEDMIEmAACSLnNBhgYk/3/dGDIXKcASDt71OlIoTu/vVvUNPffr/33u89Sdd1nY8RYQ2aB8CigCzB0DjkuSDdsdYzEwg+/ihrPYGF8Ac1Oga8tPT4qG/z0dLrY8TjY2hkjOlaZrMqOGwKyXaFpAQFR4KC3Wb8m5e... | [
"9/11",
"8/11",
"8/9",
"5/9"
] | null | 2 |
math | grade-5 | acute-obtuse-and-right-triangles | false | true | What kind of triangle is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACqCAYAAACXpjjmAAAZK0lEQVR4nO3dbXTU9Z338c9kQoCAiSEGDUGMQgyQITDxbo0agQRQIAFM1HZ1GlKxVqyKKKso3rBUW0CtuiJWbJHSdSvMBIEQ7ootqYChaKw03atnPOdKu0avJIacSQPhDEzmeoDMZrcUCEzmNzfv1zPml5n/5/Doc37ne75/i9/v9wsAAABAUMSZDgAAAABEEwo2AAAAEEQUbAAAACCIKNgAAABAEFGwAQAAgCCiYAMAAABBRMEGAAAAgoiCDQAAAAQRBTuMFBUV6cY... | [
"acute",
"right",
"obtuse"
] | null | 0 |
math | precalculus | solve-a-triangle | false | true | In solving this triangle, which law must you use first? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD+CAYAAAAAuXIHAAAu9UlEQVR4nO3de1TVBb7//9fmIkFi4lLRHNAvZdAqFS28ULEnBxS8ghrH8IzRpNOMQoVNqYkXQFLrKFNgp4sd0WbsxKhoJOIl+4K/AdMiL7WCnHEEJw20MEEIuezfH87wzalG1A2ffXk+1uqPCdi8bPrjuT5teJssFotFAAAAAKzCxegBAAAAgCMhsAEAAAArIrDhUJ5//nmZTKar/rV+/XqjpwIAAAdl4j3YcGQJCQn6n//5H124cEFubm5GzwEAAE6AJ9hwaAcOHNC... | [
"Law of Cosines",
"Law of Sines"
] | null | 0 |
math | grade-1 | find-the-next-shape-in-a-growing-pattern | true | true | What shape comes next? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADhCAYAAAC9ZMGZAAAUQUlEQVR4nO3dS6xd13kf8O/s87hP8lLX0JXFS0NuWBKIo0pQIpkBKjlW0NqtW8BAGqBukQwyaABnkAw6SQAbaWMPMu2wmbhANOjEBdKBYgtFA9sqbDl1HSuWHZBRQjkkLZHgJUXyvs5j7w6u+LLIq/s4Zz/W+f0AAQLJvdb61toL+O991zm3VRRFEQAAQBKyqgcAAACMj4APAAAJEfABACAhAj4AACREwAcAgIQI+AAAkBABHwAAEiLgAwBAQgR8AABIiIAPAAAJEfA... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAz4AAADhCAYAAAAJS2C/AAAZQElEQVR4nO3dXWxcZ53H8d959Xj8GldxmtiogawtQUOisG1SiRaaarddChISVFp21V5wARJcwMXedCXQ7gIX3O7lcsNK5GJvisReBFqtYClFNN1lS0tTUEJpCrZJbGI7cfwyc972YurEaWxnxnNennPm+5EqNbbP8zz/57xofvOcOWMlSZIIAAAAQCVYllX0EIxkFz0AAAAAAMgawQcAAABA5RF8AAAAAFQewQcAAABA5RF8AAAAAFQewQcAAABA5RF8AAAAAFQ... | 1 |
math | grade-6 | quadrants | true | true | Which shape is in Quadrant III? | "iVBORw0KGgoAAAANSUhEUgAAAfkAAAH8CAYAAADSe9ZXAAA6CElEQVR4nO3df3DU9YH/8dcmS0ISyA8IJARC1AqoGFFA5FeoFJlD8VARxmHsD0fPOTrTwek5/Z7H9To9r3J2bmyVWu/KXUd6V6/9yhdqpeAhqBCDiAGBAIEC1kAICSFk83N/ZXc/3z/o5giQZBP2s5/9fHg+Zjp1P9l8Pi/fbj6vfX8+n/2syzAMQwAAwHFSrA4AAADMQckDAOBQlDwAAA5FyQMA4FCUPAD95je/0e7du7sfh0Ih/ehHP5LX67UwFYDrRckDDrd+/Xq... | null | [
"iVBORw0KGgoAAAANSUhEUgAAApcAAAH8CAYAAACEt4SVAABAKUlEQVR4nO3dfXBV9YH/8c9NbhKSkEcCCYEQH3hQYkQBkadQrTKLD/WZcRjarYM/Z+1MF6fr9Lcu63a6bnXt7Ngqte7Wbke6W7dd+WEfKFgKKmAQMSAQIFiIGgghIQl5uElu7r25D78/0psSQpJ7wzn33HN5v2Y6eE+Scz5zenLOJ9/z5AiFQiEBAICE43A4rI6AK1CS1QEAAACQOCiXAAAAMAzlEgAAAIahXAIAAMAwlEsA+uUvf6k9e/YMfPb7/fre974nt9t... | 3 |
math | grade-2 | compare-clocks | false | true | The clocks show three things Brad did Saturday afternoon: Which did Brad do last? | "iVBORw0KGgoAAAANSUhEUgAAArIAAACZCAYAAADTjdlcAAAnSUlEQVR4nO3deXhU9b0/8PeZyZ6QBSYJIZAFCIYgZRMF0bAJaGXrT8VeuEG4yHKrfcRKK1qURSpeBGotiFZLEREXUAGpCAIRFCqVJSDIYjABRAKEbJA9M5/fHyknGTKT2TNzkvfreXg82/ecb8bznvM5M+ecUUREQD7J+OIXkK3fu2192WVlKDXWuGVdwZEhSPvyKbesi0hLmEsi38Nctlw6b3eArLhY4tZQult5URmKPjrs7W4QNS3mksj3MJctGgtZHyV5Jd7ugk1... | [
"did homework",
"played soccer",
"did a puzzle"
] | null | 0 |
math | grade-4 | identify-rhombuses | false | true | Is this quadrilateral a rhombus? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD+CAYAAAAAuXIHAAAor0lEQVR4nO3df3TU9Z3v8dd3vjOZ/AIiIaIgPwpIEAUC2aKuK15cqOfWdr17el27AlIERBGwKAr1upauisgvV9GqxR8g2F1Oqkevllt11ZXtrlIFQvgZBeR3gIiEkGQmmR/f+0fCFwKRnzP5TPJ9Ps7x2HcMmVds7Xk5vDJjOY7jCAAAAEBC+EwHAAAAAFoTCjYAAACQQBRsAAAAIIH8pgMArVVpaamWL1+u7du3y+/3q1evXrr99tvVtWtX09EAAEASWfyQI5B4+/b... | [
"no",
"yes"
] | null | 0 |
math | algebra-1 | special-right-triangles | false | true | Find a. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEECAYAAAASx0PMAAAiJElEQVR4nO3de3BV9b338c/O3kk2ue7EkPuxgIcol2IBLYgJELDP0FYrclFubTmlnlb7tA/jdDraacdjx8fa6vhgx8fpaHlEi6BH0HoO2jMHIWAiNCOKcCxeQOFobuyEsHMh1315/gg7FyCQy9pZa6/9fs10pllZ+7e+Kf98uua3Pz9HKBQKCQAAAIAh4sweAAAAALATAjYAAABgIAI2AAAAYCACNgAAAGAgAjYAAABgIAI2AAAAYCACNgAAAGAgAjYAAABgIAK2DXU... | [
"$8 \\sqrt{3}$ centimeters",
"32 centimeters",
"8 centimeters",
"$8 \\sqrt{6}$ centimeters"
] | null | 2 |
math | precalculus | outliers-in-scatter-plots | true | false | The two scatter plots below show the same data set. Choose the scatter plot in which the outlier is highlighted. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUYAAAFGCAYAAAAW1zbwAAAs10lEQVR4nO3df1RU550/8PedAYbKMKOjQhOCzsYhBCMhEYWgzvlG20yTbPZ0uycm2OYnpIlLqjHtSZvs1x5Zm3XPVNeTGHWNpy3N2V2rJq1JtsfUzbfRsIsIY1iNgBqgoogJICODYzK/7/ePCSNzAVF45gfM+3VOIveZyzx3YObN5/56HkmWZfkLD9D6JXDZD/hkEBEllCQJSFcDOVOAzBRA+sIty/X9sd4sIqL4UKwDklq+DC7clALkpgVTk4gokVz2A6evAJ9... | 1 |
engineer | grade-7 | identify-laboratory-tools | true | false | Select the test tube. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AABcpklEQVR4nO29ebQk2VXe++19TkRm3vnW1HP13JpnBEY8MG3gCQlkqdWtMhISy8IPZBAGzLKxeTzea4xttOy18LL8EBJ+WCAkdavoEhYYjGVwIxAgkNCAJCT1pB6qqmu+dcfMiDjn7PfHiZMxZOStW9XDvVk3vrXy5hSZNzIifvHtvc8QQKtWrVq1atWqVatWrVq1atWqVatWrVq1atWqVatWrVq1atWqVatWrVq1atWqVatWrVq1atWqVatWrVq1atWqVatWrVq... | 1 |
math | grade-2 | equivalent-amounts-of-money-up-to-1-dollar | true | true | Look at these coins:Which group shows the same amount? | "iVBORw0KGgoAAAANSUhEUgAAAYUAAABNCAYAAABJ73glAAB4LUlEQVR4nOy9d2Be53ne/Tvz3RPAi71BgODem9SeljzkoWVbcRzHiZvajpt8+dI642vSjKZt2ma0sRVbsuMly7KGtUVJJCVS3CQGF4i9X+Dd+8zvjxeErMaDlCUzjXD9o0GQPNd5nvPcz72uW7Bt22YJS1jCEpawBEC82g+whCUsYQlL+JeDJaOwhCUsYQlLWMSSUVjCEpawhCUsYskoLGEJS1jCEhaxZBSWsIQlLGEJi5Cv9gPYts2lAqhSqcTszDTxeBwb0EolgsE... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAnQAAACwCAYAAACGj/NEAAEAAElEQVR4nOzdZ2Bc13ng/f+t0xt6B4hGopBgryKpLlmWLKvYsmU7zjpOsZ04bVt203aTTVnvJtnsuxuv7RQ77kW9ixJVKPZOACSIQqL3mcHUO7e+HwaEpLhJsmp8f19AEuTMPWcGvM+cc57nEQAHl8vlcrkAx3GY0WEoB2kLTPcO4XK9K8kChCRo80OlCgJuQOdyuVyuZTMFh6Opd/oqXC7X67EtDPI7fREul8vlevcYzBW/VquwOlBcAXC5XO8+aQsGsjCtw8U... | 1 |
math | grade-8 | nets-of-three-dimensional-figures | true | true | Which figure will this net make? | "iVBORw0KGgoAAAANSUhEUgAAAM0AAADNCAYAAAAbvPRpAAAEy0lEQVR4nO3dMXIUVxiF0TcuAodQDhwrggzwDsQG8A4wO4AILwEivANgB7AB2IEQmYgUO3CJ0Nk4QQKjVolbPV2Nbp2TaWqC95f06U2Pep422+12O4Dv9tPaC4Cr5traC1jCZrNZewk74UXAj6lup2kJZoyuWZpU7jRjjHHvxbu1lzDL24f7ay+BC9TtNLA00UBINBASDYREAyHRQEg0EBINhEQDIdFASDQQEg2ERAMh0UBINBASDYREAyHRQEg0EBINhEQDIdFASDQ... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUkAAADNCAYAAAA13ILSAAAZ+klEQVR4nO3dfVSUZd4H8O+YWigItqCo6ECriRkClW+njKEXy1wXamETbZfRXfQsbo8zraa2z+4MT3aSyhi31VbNGE6P2Auug1qpkUyPZIqGk26BZTKLb6isjoKoqM3zxzi3UnDLy8zcM5ffzzkdj3c487sc+XJd9/Vyq5xOpxNE1GYqlUrpEsiHuihdABGRP+uqdAHeIMpPenbyiZQnXE9SlIAExGoLUaASsicJAA/llypdQqdsnZasdAlEBAF7kkREnsSQJCK... | 1 |
engineer | grade-6 | identify-independent-and-dependent-variables | false | true | Hint: An independent variable is a variable whose effect you are investigating. A dependent variable is a variable that you measure. Which of the following was an independent variable in this experiment? The passage below describes an experiment. Read the passage and think about the variables that are described. Pete's... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAFkCAYAAABLkQIEAAEAAElEQVR4nOz9+bIkSZLei/3UzNw9Is6SmZXV1XtP75gZzILlXuByIPeSEAqeBm9AEfIFKITwLfgXhS9AUgBeuQQJApgZYDBrDwazdXd1LbmcJSLczUz5h5q5e0TGiThZUdlVEIGVnIqTJyI8PNzN1FQ//fRT+ef//J8r/238t/Hfxn8b/xWNf/Ev/sUX8rkB4P/0f/w/ICIABx+HYXvkEA7nPKh78BXijtlkLZ+VH35/OZcHj6DHbf6p9+f88Gc/5vhKetT758eZ/y4... | [
"the amount of lemon juice added to the apple slices",
"the number of apple slices that turned brown"
] | null | 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 | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAUtklEQVR4nO3deZgcdZ3H8Xd1T/d0z5FMkskJkwQkAUJOjoRDIIZ4oAQF5XLV3VVX111Rd/fBZVd92AddV0F9Hg90d0V5EGQhKmgSCEgigVxkSEISct/35JiZTGamp++u/eM3RyZzNdM9VTUzn9fz5Onp6urqX6eqP/2rb9Wvy7Jt2z6RgL1N0JCGlI2ISF4UWFDqh0lFMDoI1om4bVfWu90sERno5gyBgj1N5s7YIFxabNJIRCQfGtKwKwJVCdjdBL76lHlAYSM... | 0 |
science | grade-5 | identify-vertebrates-and-invertebrates | true | false | Select the invertebrate. Hint: Insects, spiders, and worms are invertebrates. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAEAAElEQVR4nOz9Z5Rt13Xfif7WWjudfCqHmwMuwkUmAJJgEDMlisrZtETJktqKLcktW36WZEl+thxkWc92u5/H67bbthwlKwdKzAQBkgCRgZtzqFynTt5ppf6wC9D7QI8hPXzpN4bOGDVwUahxD2qfueaac/7DFF8een9nA1qKv3z95ev/lq+xhQtT2ChhJoC3d6vvy78M3L98/d/91VJwZ6P688T+2fflXwbuX77+/+H1Wpxq/2ffC77SD37zY4dZXVzg8OGjlM7... | 2 |
math | grade-1 | compare-sides-and-corners | true | false | Which shape has fewer corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAALgAAAC4CAYAAABQMybHAAAEmklEQVR4nO3dv2sbdxzG8UfyjyFNGgIhJWRN2qlTKfkr2j8iwYM7hU5es8cpXjIUUwoZi7tWZNUmJQQTE1BcagI2VYhoiBxLSNbp2+Gq0tKmdZy7++qee78mC8HxAb0RXh5UCyGE7lj6eSAdJtIkCCitxZp0bkG6dkb6aFmqdUchtPqxzwKyd/1DaXF3kL64vCx98kFaP1BWh4nUOZJ+HUvPBlK9P0nfIG44OLeQtixJbxKpnvzlDcDBrOXjINXjngLki8BhjcB... | 1 |
math | grade-5 | scalene-isosceles-and-equilateral-triangles | false | true | Is this triangle equilateral? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADOCAYAAAAEw3WqAAAkD0lEQVR4nO3dfVyUdb7/8feMgwOjsIAppBQu3lKSIKHFKlp0gy5YaUoRamK6tdmpznHX3Yd7Om1uPbYyE/EuS0kzLS0LdbUb3PXmrLZxDBSWcVviyIaYuIA/NAyF4fcH6XHLSmBmrhnm9fyvkbmut/716cN1vb+mlpaWFgEAAABwCrPRAQAAAIDOhAHbADU1NUpMTFRcXJzq6+uNjgMAAAAnYsB2s6KiIsXGxmr//v0qKipSbm6u0ZEAAADgRAzYbrRx40YlJiaqsrJ... | [
"yes",
"no"
] | null | 1 |
math | grade-8 | identify-trends-with-scatter-plots | false | true | Does this scatter plot show a positive trend, a negative trend, or no trend? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFhCAYAAABK/t0lAAAlgUlEQVR4nO3df3DU9YH/8VcAMQnBbJPDGELOza0JlLlkF0NbEmfMog4HB6mhN2ivIj88KNDpVUClXs+BrZUeZ3skFhXjOYWi7XEHlXhwivq9EEoF4rG6ia1iNCGYBRJ6gUXyg6Kw3z88cxfDJiT72c9nd/N8zDjjft67eb8YavfFm/fn/UkIBoNBAQAAADDECKsDAAAAAPGEgg0AAAAYiIINAAAAGIiCDQAAABiIgg0AAAAYiIINAAAAGIiCDQAAABjItIJ94cIFXbh... | [
"positive trend",
"no trend",
"negative trend"
] | null | 1 |
math | grade-2 | select-figures-with-a-given-area | true | false | Which shape has an area of 8 square units? The shapes are made of unit squares. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMIAAADCCAYAAAAb4R0xAAADh0lEQVR4nO3dsWolZRiA4WeOZ7dzIZAtLSwEwTaFC7ull7Cdl2ell2BhETRbbLsQsLCwMwkBU5mEHYvsgZTinjmjM+9TnZNA/in+l49pvgw//XE3/nJ1DwYjBsnyjUYDIy+Pt7ZnV/ePrn4RZC2Gh9s+8PPVve1uBnz56car508cPy2GLN/l7ej04s75zXsjNrtrXwRZk+Ong1fPnzx8Gdk8/kWyJrs7PwyPQkjWrBAShZCgEBIUQoJCSFAICQohQSEkKIQEhZC... | 1 |
math | grade-3 | identify-three-dimensional-shapes | false | true | What shape is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADkCAYAAACi9FP6AAAqtElEQVR4nO3deZCc9XXo/W/PPiNpRguSBu1COxIII1az28bGGAOOMeCLDRWuIcmNyc29iVOvU+XXdf3eLDdx2bFzy3Eg2BGJg43BGG8EG1lgsCUbEEgIoQ0tSIiRhPZlFs1Mv38cjRiNtplR9zxPd38/VVO9PdPPkdQU5/n1+Z2TyWazWSRJkiTlRFnSAUiSJEnFxARbkiRJyiETbEmSJCmHTLAlSZKkHDLBliRJknLIBFuSJEnKIRNsSZIkKYdMsCVJkqQcqujVUY/... | [
"cube",
"rectangular prism"
] | null | 1 |
math | grade-3 | identify-faces-of-three-dimensional-shapes | true | false | Which shape has a circle as a face? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAW7UlEQVR4nO3deXCT953H8bdun9jGYLCNrwA2weGywQYTchAwIRw5aGmbpEm2aXq36bVltt12u9P9o9OZdne6yXQ33Z3NdrpNN5u0CRASIIEEsAGbGxNjQ/B9W/i+ZEnP/iFZSLYhxtj+WdL3NcPE/vHIfKXo88h69OgjnaZpWqMNrvZClwPsGkKISWLUQaQBFobBHDPoGgc0rahT9VhCBJ/cGWC80uv6Jt4MGeGudAohJkeXA8p6oMEG5b2g77S7/kLCJ8TkizS... | 1 |
math | grade-2 | names-and-values-of-all-coins | false | true | Which coin is this? | "iVBORw0KGgoAAAANSUhEUgAAANUAAADVCAYAAADAQLWDAACYOklEQVR4nO29e3CUZZo3/JstOqETu/N12hyABoMhYlCExrGZUl6JAxrUea1lUoUv6tSrfmXJfDXout+U7qiz1qzOuFiz63qolSlrka/WgVeqMkzNjgcQ1uDi1JJRIh6ImERiaEIOdlLpniQknRq/P57+Xc913/10p0E8DldVKkkfnn76ee7rvk6/63d969NPP8VZOStn5czJX33ZJ3BWzso3TWZ82Sfwlyp//nN6Whdhaugt+XtG+aWYGnoLM8ovLej4f/VXvm+d/tm... | [
"quarter",
"dollar coin",
"half-dollar",
"dime"
] | null | 1 |
science | grade-3 | identify-properties-of-an-object | false | true | Which property matches this object? Select the better answer. | "iVBORw0KGgoAAAANSUhEUgAAAKwAAADQCAYAAACa0YpiAAA2vklEQVR4nO2deZgcxXn/P90zs5dWu6vVsehAQhI6kIXNDTEPNpiAD0wAXySQxDy2YzscSRwcm+DrwQ42wXnANo4fH4ljYn62A+awiY2NbI4ABoTEIQQGJMFKCN2rY1d7zkzX74/u6n27pnqO3dljpP4+zzzTR01NTfVn3nrrrepqRymlAAYGBti+fTvd3d3kcjkSJZpopdNpWlpamD17Ng0NDQA4SinV39/Ppk2bWLBgAQ0NDWQymQkuaqJEkM1mGRgYoLOzkyVLltD... | [
"bouncy",
"bumpy"
] | null | 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 | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAWbUlEQVR4nO3d6XMUZ34H8G/3TM+t0YkOdCIQmMsYBAu2ZXxt7dpee2Ov4904a+/uizivtvIiSeXd5g/If5DaqlQSO97yGjs29ga8xhcgLhuBOFZICAl039fcPX3kRUsjCwkYmFF3z+j7qXK5NNL0PMzT/e3n+XU/M4Ku6/qIDHRHgZAKKDqIiLLCKQAFDqDJB1S4AGEkoevn5qxuFhHlu/1BwHk9avxQ5QK2+I00IiLKhpAKdEaAYRnoigLinGL8gmFDRNlW4DC... | 0 |
math | pre-k | represent-numbers-with-pictures-up-to-3 | true | false | Which shows 2? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAASiklEQVR4nO3dXWxbZ+HH8d9zXv1yHCexE6dxWV9ou65S6QSCbRJ0FyBNIMEfsTtAu+Km93DNFXeTuBzigptNICGto0NaNYRGA0jNCmx0Huu6pG22NFmcNm5j+/gcnxef/4WbNFmbNk7cPsf27yNVSRvHefzE33OOz4sroiiKljxgtgHUQiCIQESPiCaAjAocTgEFAxBLzSi6UJU9LKLB88wQoM002n/ZYwBPptt1EtGjUQuByzbwuQd80gCUatD+AuMjevQyars... | 1 |
math | grade-2 | am-or-pm | false | true | Dave is getting out of bed in the morning. His watch shows: What time is it? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABaCAYAAACCNCH/AAAITUlEQVR4nO3dP2yc5R0H8F9CaDAt3En8VUtx2wGoit5rB4TUNk5BwV5qpoouvpSquZsuE0kWwhRngbKUDJXNlLNUCbFgM9RBHeKKqogu90qlacrQC1KhgopzITIEgjuYWG6c2HeX1/feOZ/PZNnvc+9Xz/T1o+eeZ8fy8vJyAAAAmdiZdwAAANhOFGwAAMiQgg0AABlSsAEAIEMKNgAAZEjBBgCADCnYAACQoV3tPvjPpTT++t/TcXH5863MwwD7ys6hePDWn8Q9Nz2... | [
"6:45 P.M.",
"6:45 A.M."
] | null | 1 |
science | grade-5 | identify-rocks-and-minerals | false | true | Malachite has the following properties:
solid
not made by organisms
pure substance
naturally occurring
fixed crystal structure Is malachite a mineral? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAACpDUlEQVR4nOz9Z5Rkd3reCf6uN+FNRnpX3lehCh5tgO5ms9kUm1akpJWG0lB7lqujs19mz9kPc45Wn/bDrmY1R7Oj2d3Z1VJqShQliqbZaMd28GgA5X1WehOZGRneXX/vfriRgSo0gAYFUKTY+eIUIk1kZpj/e1/3PM8rRFEUcWAHdmDva+Jf9gM4sAP7q2wHDnJgB/YhduAgB3ZgH2IHDnJgB/YhduAgB3ZgH2IHDnJgB/YhduAgB3ZgH2IHDnJgB/YhduAgB3ZgH2I... | [
"yes",
"no"
] | null | 0 |
math | grade-4 | interpret-stem-and-leaf-plots | false | true | A real estate agent counted the number of offices per floor in the building he is selling. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADoCAYAAADVNpOBAAAk40lEQVR4nO3deXTU5aH/8c9M9kCWARLZ0mwQCJsIXg0QNhMIiwQksmlBqoFisOLFhVukVaii3muOnkLFFoqAIiiiUNlEguwiuUgLWJqkYdWyJIQJUQIh4fn94Y+5YsLS9puZCbxf5+Sc4Znvd76fGf/5zOPzfcZmjDECAAAAYAm7pwMAAAAANxMKNgAAAGAhCjYAAABgIVfBzsvL08MPP6yYmBgFBATI4XCod+/eeuedd/TjZdoVFRX66U9/qvDwcIWEhOijjz6SJP3... | [
"7",
"9",
"5",
"6"
] | null | 2 |
math | grade-6 | interpret-histograms | false | true | At a candy factory, butterscotch candies were packaged into bags of different sizes. Are there more bags that had 20-39 butterscotch candies or bags that had 120-139 butterscotch candies? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFACAYAAACGDgu2AAA+W0lEQVR4nO3de1iUdf7/8Rcn5aR4AhHJU2imQiKuWlqJBZbiYpbm2VpMy1azk7m/3W3r21VsbifdWjPTalNTUzEhUynFLFERM88oqSAHEU944OTA/fvDL/OVBBx1mAF5Pq6rq7k/c/O53++5h9vX3Nwz42AYhiEAAAAAVuFo7wIAAACAWwkBGwAAALAiAjaACu3fv18TJ07U3Llz7V1KlV599VVNnDhRFy5cUElJiSZOnKiXXnrJ3mXdsFuhBwCo65ztXQBQ3fLz8/X... | [
"120-139 butterscotch candies",
"20-39 butterscotch candies"
] | null | 1 |
math | grade-7 | simplify-expressions-by-combining-like-terms-with-algebra-tiles | false | true | These tiles represent the expression 7+5x+x. Which expression is equivalent to 7+5x+x? | "iVBORw0KGgoAAAANSUhEUgAAATIAAABoCAYAAABypHzgAAAHaUlEQVR4nO3dQUic6R3H8d/7zlhTR1e3rpNktUmTsGzV3VLdamAPYQkN7G5PxcseQnoJpbCVFmouS3rxkNRbLh4W0r2VbsJKTmmh1ksKFUwx3S1qizE4bKJTdRGMYxTnfd8eXIQ0o6XzPu8787zz/dx8hff3B5kf7zzvg48TBEEgALCYW+kBACAsigyA9SgyANajyABYjyIDYD2KDID1KDIA1qPIAFgvfdgvvZUxBYU546FOplOp7EDN5QGIhnPQzv6d+/0KvHU5rmc... | [
"13x",
"6x+12",
"12x+1",
"6x+7"
] | null | 3 |
math | kindergarten | curved-parts | true | false | Which shape has a curved part? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAFT0lEQVR4nO3dvU9bVxjH8ce8REogQV36JlXq0nZrt2bq2P+oc0cEgQWmJOoAcyIlC6wZEjGw0S2NJ0D4AsaOzTWWzb2cDlakDm3B9r2/c+69388UBBZH5mvHfmyfU3POuWhoVr8yu0zNEmfA1OZqZg9nzb57YPbFPbNaNHBuv+t7WSizx4/M5j5cjb746p7ZDwujCoFpXaZm73tmjaHZX1dmM91k9A0iQ5Yezo6aMjOLU7OZ9B/fALL0qalrZzbjdymoCkKDBKF... | 1 |
math | grade-7 | identify-complementary-supplementary-vertical-and-adjacent-angles | false | true | Which angle is vertical to \angle{5}? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEQCAYAAACKgANBAAA2c0lEQVR4nO3df1yV9f3/8acHf+UhD9MZrKmgqKyGYmVWSwVNQUtDM5q1mVo2P25a+lFzqCQq6lq69KOtVrqw9cnNYGI/lkAWKtUqTQwsAc3jsHX4NvVgniKMw/cPP+dKFJAfFxwOPO63227zXNfFdb1O9ceTt6/r9W5TUVFRIZgmJydHAwcO9HYZAAAA8BKLtwtoSdLS0rRu3TpvlwEAAAAvasMKtnmioqK0e/dunT59WgEBAd4uBwAAAF7ACrZJ7Ha7du/eLUlasmS... | [
"\\angle{7}",
"\\angle{9}",
"\\angle{1}\\angle{6}",
"\\angle{4}"
] | null | 0 |
math | algebra-1 | identify-linear-functions-from-graphs-and-equations | false | true | The graph shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAfwAAAH8CAYAAAA0Uh0TAABl7UlEQVR4nO3de3RU530u/mfPTbfRDQRCgAXmaoMEGBtsMPhSu7ZrJ04gae2kieset6tO4zgnZ52eldPV5jRZxs35tUlPXDtNcpoTO1ldzYlPiBsMAmODgQgbGRkEEhiDAF0AXUaa0dz27Ov7+2M0MkISzEjzamak5/OPrWH2o1d7z97f/e797ncUIYQAERERTWmOTDeAiIiI5GPBJyIimgZY8ImIiKYBFnwiIqJpgAWfiIb593//d9TX1w/9bJomXnjhBUSj0Qy2iog... | [
"linear",
"nonlinear"
] | null | 0 |
math | grade-1 | estimate-to-the-nearest-ten | false | true | How many marbles are there? Estimate. | "iVBORw0KGgoAAAANSUhEUgAAAf4AAAFUCAYAAADF6F6tAAEAAElEQVR4nOz9eZAc133ni37Oyequrm6gNzQaJDYCECCCIABSAiVz0zqX9AJ4xhPPsmxQ1sRE+A5F6t43S4TDpO2IUTzPe6Qi5t5whMckJb83YVEm9UTJE/J9kChdW5R9SXORLYpYCRAgITQWAr0BVb3Umue8P845mSezqjf0TvQvonE6swpdmVm/89t/35/QWmtWaIVWaIVWaIVW6IYgudgXsEIrtEIrtEIrtEILRyuKf4VWaIVWaIVW6AaiFcW/Qiu0Qiu0Qit0A9G... | [
"about 30",
"about 60"
] | null | 1 |
math | algebra-1 | identify-linear-functions-from-graphs-and-equations | false | true | The graph shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAfwAAAH8CAYAAAA0Uh0TAAB2HUlEQVR4nO3deXxU9b0//teZNclkJYGwmSCrgiwiiARQFOteKwjiVqv126q3LrW/9n691uWiQHtvW1utWvVerdrb71VQRFnCJqtEiEQIEpAlQEgge2aSWc+ZM+fz+2MaSiRAhswnM5O8no9HHzbDnFfeOWfOec9ZPucoQggBIiIi6tZMsS6AiIiI5GPDJyIi6gHY8ImIiHoANnwiIqIegA2fiNr43//9X2zduvXkz7quY/78+fD5fDGsiog6iw2/B3l7QwDPf+RDtcu... | [
"linear",
"nonlinear"
] | null | 0 |
math | grade-7 | 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? | "iVBORw0KGgoAAAANSUhEUgAAABEAAAAOCAYAAADJ7fe0AAABCklEQVR4nM2SoY6DQBCGp5cCL0Da1axALLq+L9Ckqo6nICQkCCSeF8AiUFgcorJJXX3FJrstSATJf4IGc1zujpr73GRmvvyZzAoA6E0+3hV8kSRJQoyx2cG+72m325Ft2ySlpLqu6X6/j028uN1ucF0X2+0Wc1yvV2w2GwzDAAA4HA44n88AgEmy3+9RFMWspG1bcM5hmiaEEIjjGJZlwXEclGU5SvI8h+/7UEp9m+RyuYBzPtVCiCnJ+vF4UJqm1DTN8sMGQUBRFJF... | [
"The new area will be 4 times the old area.",
"The new area will be 8 times the old area.",
"The new area will be 2 times the old area.",
"The new area will be 16 times the old area."
] | null | 0 |
math | grade-3 | select-figures-with-a-given-area | true | false | Which shape has an area of 6 square units? The shapes are made of unit squares. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAIYAAADCCAYAAACMsLrrAAADj0lEQVR4nO3dP25cVRjG4e+O/xQhwU2UiAXEkUKBqCJRsAMqlpA9hCoNVCwiS6CBHVBQpIlSgGSHHiNosBNLMR4diquRUrwSQsydY937PI09Gsnnyv7p0zSfz9Baa2dXVb9eVl2sq65bsUD7Q9WdvaoHt6ruH1YNZ+9ae3He+7G4SR5/WLX/+nJ88dFh1cMPxmpYnot11cnbqt+uqk4vq1bn1+Mboli2O3tjA1VVb9ZVq/V7b7Bsmwb+blWrvo/CTSUMImEQCYN... | 0 |
math | grade-3 | open-and-closed-shapes | false | true | Is this shape open or closed? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAAD5ElEQVR4nO3dPYhUZxiG4VdNtcQIKSxShzQKIkRIkWCXFIE0FhELsUploQwRe4tIzAaLdCnCNoJF0lhlWSslVWAR7GKjhYLBn2XFytmxiTk5uuvOuM/ZGXOuq5zme8ubh4GzYzQajQoAAIjYOe0DAADg/0RgAwBAkMAGAIAggQ0AAEECGwAAggQ2AAAECWwAAAgS2AAAECSwAQAgSGADAECQwAYAgCCBDQAAQQIbAACCBDYAAAQJbAAACBLYAAAQJLABACBIYAMAQJD... | [
"open",
"closed"
] | null | 0 |
science | grade-5 | use-evidence-to-classify-animals | true | false | Roundworms are a group of animals with similar traits. The following traits can be used to identify roundworms: They have a soft, cylindrical body.
They have no limbs.
They are not made up of segments. Observe the animals and read the descriptions. Select the one animal that has all of the roundworm traits listed above... | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAp8AAACmCAYAAACcAuREAAEAAElEQVR4nOydd5wUxfr1v1XdE3Y2kXPOOQsKZgEVEwqCmDOKmDBgTphzjhgxY0ARc1aQnDGRBcl580x31ftHdffM7C6y6r2/+17vHD8rO9PdVdXVtd2nn3Ae8dpvpbpXjRDVQ4IMMsgggwwyyCCDDDL4d2B7QjN7WwKxtNDVGeKZQQYZZJBBBhlkkMG/G9sTGrGlTOn/9EAyyCCDDDLIIIMMMvjfgJ364cix3QGJ1kk+qrUOfqTQKK0BiUICYAkNKNAa7e3vaIX... | 1 |
math | kindergarten | select-two-dimensional-shapes | true | false | Which shape is a square? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAL+UlEQVR4nO3de4xcVR0H8O85997Z2dlOd7fdbne70HVpCy0RKZFAIo2RP8AXYCDRqC1BAwEiCQEkUYGYqIjBqDSY8Kh/mKqgxAcioAiaIkhMoGgNSh/bB21Zdrpt9zU7O7N77z0//5gWC20p7T33nHNnfp9k0263/Z1f535z7p1zHyOIiEqzwPZpoBwDEYGxxHwBFD1gWQFYmANEaYbo5UnbbbFGduFcwB+crn/TmwPOaqunkLGkyjGwtQIMzwLbpgE5GdV/wCF... | 1 |
math | grade-5 | acute-obtuse-and-right-triangles | false | true | What kind of triangle is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACsCAYAAABB/9v7AAAboElEQVR4nO3de1iVdb738Q9nIVBQUVEg0tLUVJSDgE7lbppMs7xKy+aZanJqOszsTlNmRy0bd9lxqqenmWmaJnt2e6wp7SRyEAURU1ExB80yTVQIS0FBWQJr7T+I28USjcO91r1YvF//1Y+17m/XNX985r6+6/PzczgcDgEAAAAwhb/VAwAAAAC+hIANAAAAmIiADQAAAJiIgA0AAACYiIANAAAAmIiADQAAAJiIgA0AAACYiIANAAAAmIiADQAAAJiIgA0AAACYiIA... | [
"acute",
"right",
"obtuse"
] | null | 1 |
math | grade-5 | classify-triangles | false | true | What kind of triangle is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADOCAYAAAAEw3WqAAAnGklEQVR4nO3deXTU9b3/8ddkXyGBhIQtBoIsAQEREEF2AVlDGMDa2opUK8HaFlDqcsGqv9r2Sm+r916RLQhSFcENsIJBJQkuUZHl2mhqEmPURJpojDFhwpCZ3x+YUSpqEmbmMzN5Ps7xnJrJfD8vzukfLz5+P5+3xel0OgUAAADALYJMBwAAAAACCQX7HFx//fUaNWqUTpw4YToKAAAAfAQFu43ee+89rV+/XgUFBfrTn/5kOg4AAAB8BAW7jTZu3Oj633/84x9VWVl... | [
"scalene",
"equilateral",
"isosceles but not equilateral"
] | null | 2 |
math | kindergarten | cones | true | false | Which shape is a cone? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAXHklEQVR4nO2daXAb532HHxwEQIL3Ld6kLVGOZMmRbEm2dd+3ZSc+Iru2k9hN0jZNMtPmSzPttE2nM/3WeqbTpp5OJ07Taf0ldibx2LEdR0pki9bBSxQpihQv8QAJAiBB3AT6AdglIcoiRSywON7ni8TFYvcv8YcXe/zfZzWhUCg07oObLpidh0AIgSDp0GsgTwdrc6DCAJpxbyjUMqN2WQLBytmeD/peV/iHNQZoNodTLRAkG7Pz0DMHYz644QLtTCD8ggitIJn... | 0 |
math | grade-3 | am-or-pm | false | true | Mark is setting the table for dinner. The clock in the kitchen shows: What time is it? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABR2UlEQVR4nO3de3RU9b03/vfee24JyZCEOwn3a2IFxJYEL9BHDVbx+Dsl9FTEtgeterqWip4K9lkVW4Gu51FwCerzVKVCWxWtEPusVqwm6tH0IInWCFgmIBBAJkIM5LJzm8uevX9/DBkyzG3PZK7J+7WWi8zs78x8m8zufOa7P9/PR9A0TQMREREREcWFmOoJEBERERENJgywiYiIiIjiiAE2EREREVEcMcAmIiIiIoojBthERERERHFkSPUEKA14NMCjQbvwr+9nQYA... | [
"4:50 P.M.",
"4:50 A.M."
] | null | 0 |
math | grade-7 | identify-alternate-interior-and-alternate-exterior-angles | false | true | \line{MO} and \line{PR} are parallel lines. Which angles are alternate interior angles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD2CAYAAADs6vBqAAAjrklEQVR4nO3dbXCU1d3H8d+SsOEhmCiiEMLNAoqpIZAnDEYkxKqJMEoCjmARIc50aJRKdKqI7RRsxwjVGbalBrSKgE4NWiEwRRARkoJIkA2LIYpQw6KpohFMeAgSSHK/sGyNbMLDbvba3ev7mWGmXGfZ8z//V78ez7nW0tLS0iITqqurkyRFR0cbWkewon8AAACedTK6AKMsXbpUS5cuNbqMoEX/AAAAPLOYdQfbZrPJYrHowIEDRpcSlOgfAACAZ6bcwS4pKdHBgwf... | [
"\\angle{MNQ} and \\angle{ONL}",
"\\angle{MNQ} and \\angle{RQS}",
"\\angle{MNQ} and \\angle{MNL}",
"\\angle{MNQ} and \\angle{RQN}"
] | null | 3 |
science | grade-5 | weather-and-climate-around-the-world | false | true | Does this passage describe the weather or the climate? Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. The Gulf Coast of Florida is known for its white sand beaches. The area also experiences strong winds each year during the summer hurrica... | "iVBORw0KGgoAAAANSUhEUgAAARoAAADgCAYAAADczalxAAEAAElEQVR4nOz92bMsyZ3nh33cPSIzT5713nP3rapQqMLW1QAKg242gOmZYfdsHNLGhibpSU8yjRll/S/IaHqT9MJXPkk2RtFIjSSSQ/VoyGaTnGn2dDfQGKAAFAq11627n3vuPfvJLSLcXQ8/9wiPyMxzCt1dqJKJXnVuZEZERvj689/v+9vU7/3e73n+5/I/l/+5/P9F+Y/+o//oM3lvBpB98z+Yu6C1RilVf/fet471Na0Ah1PdJzQlfU78nJ4Dd2YljTFz749Hh8c... | [
"weather",
"climate"
] | null | 1 |
math | grade-2 | read-a-thermometer | false | true | What is the temperature? | "iVBORw0KGgoAAAANSUhEUgAAALkAAAEOCAYAAADVFbYlAAATMElEQVR4nO3dX2hjV34H8K/8Z5J4Z+PL4s1moGtf77w4JanvOKUJ1MEyhclDt5VU6FNIdW9hCqW0spqnUBZJu7R5KIukllLowPqqNC99kdQ/Dwm0umqch6Ss5w7JEreQnWulrSFV26tkqsyMbakPRre+vnIysv7OOd8PBMZHtnUCX/849+r87gm12+02iAQ2Ne4JEA3bzDje1HEcOI4Dy7J846qqQlVVhMPhcUyLBBUa1XLFtm0UCgWUSiXs//unmJpfRGh+EaHZr3n... | [
"80°F",
"75°F",
"85°F",
"70°F"
] | null | 2 |
math | kindergarten | ordinal-numbers-up-to-fifth | false | true | The first picture is a plane. Which picture is third? first | "iVBORw0KGgoAAAANSUhEUgAAAaUAAABdCAYAAAAFZHluAAAiqklEQVR4nO2de3xTVbr3f7tNpUnTJtjaVnuhSLAF6Q0FgRaFj4ByUdDR4TbKzXlHCigOQwF1pD0HpAVU1FI471tunoMgeEXK1RnxlCIg0tICLUM6pjcIpWBC06TQJPv9Yye7SXPfTdokXd+/bPbaa60+lvXLs55nPYuiaZoGgUAgEAheQEBPT4BAIBAIBCNElAgEAoHgNXhMlBTtNPofvYP0f7ZA0U52CAkEAoHgGE6i9O31duRWt9kVmxPNWsjUepQrdZj3q5rzBAk... | [
"plane",
"bear",
"train"
] | null | 1 |
math | grade-2 | estimate-to-the-nearest-ten | false | true | How many marbles are there? Estimate. | "iVBORw0KGgoAAAANSUhEUgAAAUwAAADECAYAAAD0+hheAACC3klEQVR4nO39eZAc533nDX6ezOqqrupGn0CDxEWQAkQIFyFS0vCSZNErWjbgGW2sOfKAeunXu56hSM/GzE6EQ6TtiFGEJ4JUxLyzjvCYguWNdy3KpELHTMgR0DWyJM+S5iGNKOIkSACE0WiARKMPVB91Zj7P/vE8T+aTWdWN7kY3+kD/IoCnM+vKeurJ7/P93UIppViVVVmVVVmVa4q32BewKquyKquyXGQVMFdlVVZlVWYomRvxIcVqyLErZQA6cj571+VvxMcuK3H... | [
"about 20",
"about 70"
] | null | 0 |
math | grade-7 | identify-complementary-supplementary-vertical-and-adjacent-angles | false | true | Which angles are vertical to each other? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD5CAYAAAAdvEK/AAAtK0lEQVR4nO3de1SUh53/8Q8IkbiwEoyCiUaMHiWbbkC2x0ukAUwxYLwwShjIFclykm2bBs42CZ7NRu1uq+4mK/7R3aSuiDUJDIKMIQmkHAO0eMvu4tjUZrSmjmIUYiRYSEoFh98f/phAvXEZeJjh/TrHP3hm5pnv5JhzPnz9zPP4dHV1dQkYBi0tLQoODjZ6DAAAgCHla/QAGB1aWloUHx9v9BgAAABDjoCNYZGamiqbzSabzWb0KAAAAEOKgI0h9+ijj6qqqkrSlU0... | [
"\\angle{1} and \\angle{6}",
"\\angle{6} and \\angle{4}",
"\\angle{6} and \\angle{3}",
"\\angle{2} and \\angle{3}"
] | null | 2 |
math | kindergarten | curved-parts | true | false | Which shape has a curved part? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAJwklEQVR4nO3d61NU9R8H8PfZC3tfkGtAw93fT53CDJDMtqmpHtZo9kz8+5wuOgnN9KgHImFDUmGWoQKCAuK6AXu/nx6sq0xiKnu+n3N2eb9mnJVZZ8/H2Tff8z3fc/louq7rD7LAnSQQKwB5HUQVc2hAwA4c9AJtdYD2IKPrM1Gzy6JaNhoEHLeTpR/a64D/+0opJKpUrADMJ4D1LHArCdii+dIbDBkZKWAvZQoA4gXAVtjxBpGRypnK6YDN3FJov2DQSASDRiI... | 0 |
math | pre-k | represent-numbers-with-shapes-up-to-3 | true | false | Which group has 2 triangles? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAGWUlEQVR4nO3dwU8TWRzA8V+BYuLq7sG4m9V43N0/wYt/hAdv/hEaSdYT3kBvcIc/AP4DCH9BvbnEIdUeGtJkLT00cbT0tTOdPYysgsWWdt7M+837fm5QIKP5MimT93uvkiRJ8mEg0uiJhLFIlAjgnKWKyM1FkT+ui/y2LFL5YJLk9ceiLwuY3v2fRZbe99IPfl8W+euntGrANWEsUv8s8u9A5F1PZOFjlL5AtHDZzcW0URGRT7HIQvzNC4DLzhodJiILxV4KMBv... | 0 |
math | grade-1 | compare-sides-and-corners | true | false | Which shape has more sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAALgAAAC4CAYAAABQMybHAAAH00lEQVR4nO3dX2hedx3H8c/z5B+NSdM/NpsR2pERLawUWXHD1D8bgbK1FPRiF7KbMRQUJ+xmomy7mqLohYITB+LYzRD0QqFslEHcnDRCJWOUDjrjShc0dqld2+RZYv48OV789mwza0dMcs7v9/vk/bpqycX59px3nj7n95xznlpRFMXFRenvc9JsU1ouBGSrvSb1tklD3dJNnVLt4kJRnJ6JPRaw+e7cLrVPzIW/fKJT+vTHQv1Armab0uvvSP9alP42J9VnlsM... | 0 |
math | grade-1 | count-sides-and-corners | true | false | Which shape has 3 corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAHH0lEQVR4nO2dTW8TVxSGj5PAgkIrVVWr/oAWqeq2YtN/0p/SXxBAsCBs+FgRQIEgwQKCBAIhQEiwIuLDaYgTUJRJUeJE2I7MdDLThQFBiBOPfe+595zzPqv4+yp64oyv3zNvpSiKYjklerVB1NgkygoCYGBGKkQHhol+2Uf0016iyvL7onj8LvSygGYOfUs0MrvRufDzXqKD33QsBGBQGptEMy2iJCX6Z4No6F3WuQGSAZccGO44RUTU3CQa2vzsBgBc8tGp/wq... | 0 |
math | grade-3 | identify-multiplication-expressions-for-equal-groups | false | true | Which expression describes the model? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACHCAYAAAAslC4OAAAc6klEQVR4nO3dOZAj130G8K8vYHAfiwXmwMxQXJXFwDKVUIGrTEV05nViZUydmUxEZ1ZkZrIiKXVCZ7YSUSmTpQMFdBWLLgdUlZbauTDXzgAYAIPG0d0OIPR2YzAzOF5fwPermqrpXS66X+Nj4Y/X/34tWZZlgYiIiIiIhJCDPgAiIiIiolXCApuIiIiISCAW2EREREREArHAJiIiIiISiAU2EREREZFALLCJiIiIiARSgz4AL5mmicFgYP/0+30MBgMYhgHLsmCaJkz... | [
"1×2",
"2×3"
] | null | 1 |
math | grade-2 | estimate-to-the-nearest-ten | false | true | How many marbles are there? Estimate. | "iVBORw0KGgoAAAANSUhEUgAAAf4AAAFUCAYAAADF6F6tAAEAAElEQVR4nOz9a3Bl13Xfi/7mXPuBDWy80U+y0U32Q4+mRIutikhTlJ1ENB3xHl/L8iMVqer6fLDruurE1s2pc6usKOdLdBPfupHkU+fbkRMpdSQ7saoiRaKcI5GORdFsUrZEic1XP9ndYAMNdOON/d5rzXk/jDnXYwPNfgHdG2gMlWr1BkBgr7nnmmOM//j/x1DWWsu2bdu2bdu2bdu23ROWu9tvYNu2bdu2bdu2rRutVYtYmGwCUChphu/vucvvaH1s2/Fv27Zt27Z... | [
"about 20",
"about 60"
] | null | 1 |
math | algebra-1 | identify-functions-vertical-line-test | false | true | Look at this graph: Is this relation a function? | "iVBORw0KGgoAAAANSUhEUgAAAQ4AAAETCAYAAADH+ejgAAAahElEQVR4nO3dbUxb18EH8L+hxsYQ7CeNgSzLSNIWeMBdiAgJaFpV+mErDdmWRYOomjQlWidVSz5OrSKFLGWN1mntJpXsRe2TaFMmDSSySEmeVGs0qqUTL50VTzWRg9rYqHoEcWhjJ9jYmNjPB9fXvtgBv1z7+vr+f1IVYy6HU7D/nHPuedFEIpEIiIgyUCZ3BYhIeRgcRJQxBgcRZYzBQUQZY3BQSoFAAIFAQO5qUJFicFBKNpsNNptN7mpQkWJwUErj4+OYmJh45Oe... | [
"no",
"yes"
] | null | 1 |
math | grade-5 | identify-parallelograms | false | true | Is this quadrilateral a parallelogram? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADuCAYAAAADb3CcAAAouklEQVR4nO3de3xU9Z3/8feZnEkmmQkkAcSEO4aLIMpFVIq2dZFqC0XqrWrZ3XZ366799eJasYq/WuwFqVq3227X7bbdtvujaou03i+11FupIoqIBiHcLyECQm6TZDJz5pzfH0PmEIWYhJmcubyef80ZZ8IXMvPwPd/5fD5fw3EcRwAAAABSwuf1AgAAAIBcQsAGAAAAUoiADQAAAKQQARsAAABIIQI2AAAAkEIEbAAAACCFCNgAAABAChGwIUl6blNMf3dfi9bviHu... | [
"yes",
"no"
] | null | 1 |
math | grade-5 | adjust-a-budget | false | true | This table shows Owen's March budget. What could Owen do to balance his budget? | "iVBORw0KGgoAAAANSUhEUgAAAfQAAACeCAYAAADEzvgCAABAW0lEQVR4nO3deXQUVfrw8W93drInJBEISxPIAoQQkLAMiBCdV5FFUQwI4wAqqGF1AEHAgYAiCiOIKD+J4IAKKIgKorLJjrIT1rBFCEEgezrpJp10+v0jk5ams3RnIaF9PudwPFbduvXUrar7VN2q6ii2BO43IIQQQoj7mrK2AxBCCCFE1UlCF0IIIWyAJHQhhBDCBkhCF0IIIWyAJHQhhBDCBkhCF0IIIWyAJHQhhBDCBkhCF0IIIWyAJHRRZynswC3EBc/2bjg1cKz... | [
"decrease spending at the bookfair to $30",
"increase his donation to the animal shelter to $50",
"wash his dad's car to earn an extra $5",
"give a guitar lesson to earn an extra $25"
] | null | 3 |
math | calculus | identify-graphs-of-continuous-functions | false | true | Is the function f(x) continuous? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AAB08UlEQVR4nO3de3hU1b038O/cZzK5kkASgQSQm0HCTS5RIlisolhrsIi2WrW2b4/1Uvu2PW09Ht+eFq2nrW1t1dr2qGjtqUpVrEBQLOFiEIEAgYSLMUIuhMl1ksx9z5693z9iIuE6gbUyk+T7eR6fx5ns+ebHZGbPb69Ze22Drus6iIiIiIhICGOsCyAiIiIiGkzYYBMRERERCcQGm4iIiIhIIDbYREPIxo0bMWbMGCxZsiTWpRAREQ1aBp7kSDR0XH311bjjjjtw551... | [
"yes",
"no"
] | null | 0 |
math | precalculus | determine-one-sided-continuity-using-graphs | false | true | Is f(x) continuous from the right at x=1? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB2aUlEQVR4nO39eXgU550u/N+9d2sXEkhCIAmx2cISIBAgQDYExxu2Y7AdbI9jO/Fkxpk4dnLmzHuSnPxyvcl4/PqcbBOP7ckk8TqTcxyTeInBgmAjFksGgQCBxCYk0ILQ0lK31HtVddXvj0YyYjFqqIdWo/tzXVxcaqm++qqqu/rup59+yqBpmgYiIiIiItKFMdYNEBERERFdTxiwiYiIiIh0xIBNRERERKQjBmwiGmHr1q0oKCjA6tWrAQD33HMP3nvvvYv+rCzLWLJ... | [
"no",
"yes"
] | null | 0 |
math | pre-k | cubes | true | false | Which shape is a cube? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAVQUlEQVR4nO2deZAcV33HP+91z+x9zuxKthTJICTb2MjGlziFJYGxDU4gLsg/FJWqVEgoquIqiqIoQ4JDADs2INtgc4QQBxxCMDbBIIMxhpStCodNgaUKWNJqV9KupV1pZ727Ws0efbz80dNz7K6kPXqmj3mfv6Semde/3f3Om57uX3+eUEqp4Tnoy8NpB2yFRhM5TAFtBmxuhjVpEMOzSv1mMuyyNJqls60dzEN57z8XpOHiFi/VGk3UOO3AgTNwYg4O5kFO2t4... | 0 |
math | grade-3 | identify-equivalent-fractions-on-number-lines | false | true | Each of these number lines shows a fraction. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEECAYAAAASx0PMAAAjcklEQVR4nO3da3BU+X3m8aelbl0GCbVG9IzUMohhZsJVgeUipCkLbEfxJkuB4xkIZGtMqITMbCrEmSmXa2q3nIs33gtVm6qU8c4CNqOs9SK7BMqMbaisAdsSxhKSwB7CmMGOjGBMI6k1IzW6tk5LZ1+IlkfcJOBI/3O6v5830Kf7xVOt092Pfvqff/ts27YFAAAAwBEZpgMAAAAAqYSCDQAAADjIbzoA4BbvXB3S7q9dm7id7ffp6cKAfnvVXP3hp4qUm+UzmA4AAHg... | [
"A",
"C",
"B"
] | null | 2 |
math | grade-5 | understanding-probability | false | true | If you select a marble without looking, which color are you less likely to pick? | "iVBORw0KGgoAAAANSUhEUgAAATMAAADNCAYAAADUt5eDAAB02klEQVR4nO29eZwU9Z3///xUdfeczDCDIwMDjnKDqFFAwWNQTIREXa8ExWNNTDYev338EjW73tn9bjzjJua32TXJZtVV16AhfpGsieiqcUEjckRRwiVoYGY4BOZgZvqs+nx+f3zq6p4BmZnungH6lYeprqruOpqaV7/vl1BKKQoooIACDnMYA30BBRRQQAHZQIHMCiiggCMCBTIroIACjggUyKyAAgo4IlAgswIKKOCIQGigL6CAAo4WyJbtyMYPUe07ka3NqLYdqGg... | [
"orange",
"black",
"neither; black and orange are equally likely"
] | null | 1 |
math | pre-k | rectangles | true | false | Which shape is a rectangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAChElEQVR4nO3dO25UWRRA0VPlTwAGMlqdN58ZMDMG0UNjBPzyNqltLGFceh1UIxG2yqVdolgru7p60gm23g3PalmW5fJu5vPtzPVm5n4ZeLDT1cyTk5kXj2b+OJ9ZXX5blndXhx6LY/bm6czpp9vt4c/zmVePtxXCQ11vZj58nfnnbubj7cz66n57ITL26cnJtqmZmZvNzHrz0wXs04+mvi8z68OOwu9CaCSERkJoJIRGQmgkhEZCaCSERkJoJIRGQmgkhEZCaCS... | 0 |
engineer | grade-6 | laboratory-safety-equipment | true | false | Select the fire blanket. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AABAqUlEQVR4nO29d7xkV3Xn+1t7n1jp5tutbrWkVkAoWiCSQTIIcCAZbEsyfgSPnGTGHzx+DoOfx++N7LE/H489Hg8ef5jBCLAxPH9o0mOwwRpjJIxsgxCSLBEkJNTKHe69fWPViXuv98epqlvh3Bwq9P7yaVTnVNU5q+456+y1116BsEucDoK/JOCdu3W8Nfgr5XnvOkhU3ePzGAxDBe3GQWaq1WshxD0AxG4cbz0Y+CYR3TjleY/s9bkMhmFhdxRTiD/YtWNtAAF... | 2 |
math | grade-7 | identify-linear-and-nonlinear-functions | false | true | The graph shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABiCUlEQVR4nO39fXCc9X3v/79Wu6v7W0uyZGQkYwwGGdtgMMTGBlMTIJBwYpMc006S0kNvyGmam3Z6ptNJM6cph29m2iS/0ECTnJMTQtuZnDDctEBkxwSDHTtgLIyMZG6MMbJkWzcrrVZ7f1271/X7Q5awsI0l+/p4tdbzMcOgXel66e3r2r32tZeu3fW5rusKAAAAgCcKcj0AAAAAcCGhYAMAAAAeomADAAAAHqJgA5hw00036Zlnnpm4/J//+Z+68sor5ThO7oYCACD... | [
"nonlinear",
"linear"
] | null | 0 |
math | precalculus | determine-continuity-on-an-interval-using-graphs | false | true | Is the function f(x) continuous on the open interval ( – 8,7)? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABsaElEQVR4nO39fXxU9Z3//z8nM5PrhIQASQgmiAgKAnKlgiBYrFqptmAtttsLu9au9rqfz+5+9tZPP/vd3frx189u7X5q1Vpbq3a3n7ay9aKKAVEuDcpFhEACIkYhBMj11UwyM2cuzu+PIYEISALnzWTI43679WbnJOeZF+dkzjzn5MyMy7ZtWwAAAAAckZLoAQAAAICLCQUbAAAAcBAFGwAAAHAQBRtAP+vWrdP48eO1dOlSSdLtt9+uF1544bTfGw6Hdd111+ntt9+... | [
"yes",
"no"
] | null | 1 |
math | grade-3 | compare-fractions-using-number-lines | false | true | Which fraction is greater? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAB8CAYAAABTwcfUAAAazUlEQVR4nO3dbUxU594u8GsYZkangghIcCxKaEN2TkU3VBC1dUdjpdTuklqsJbVUm2q16RsPWm3zaNocjdG+PNltbaynjVRbbHVCOSE0lKIbFEVGwF2Dh6fHInCsUBy0DO8wL+t8QGdvqlbdnbVuWff1S4jOkg/XlRv1P2vutZZBURQFOpKfnw+DwYCsrCzRUTR17tw5FBUV4a9//Svi4uJEx9EU15xrLguuOddcJrKuOelDsOgAgXb+/HnREYRobW3FwMAAWltbpft... | [
"4/8",
"3/8"
] | null | 0 |
math | calculus | describe-linear-and-exponential-growth-and-decay | false | true | How does f(t) change over the interval from t=
–
3 to t=
–
1? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABwHElEQVR4nO3deXRU95kn/G/tq6QSkpBAWMIggy2Q2LHBENttxxuxE8AYJ6fjdtp9up3J0pM5b+fkpDOZSV6Px306y8TjuDOeycT2vD1vJn7jjUXIYLAhIgYjg0ACY1mAFkBLqfbt3lt17/uHKBmxqQruT1UlfT/n5MSSqr56uLfq1lNP/XSvQdM0DUREREREpAtjrgsgIiIiIppM2GATEREREemIDTYRERERkY7YYBPRGLt378bs2bOxbt06AMAjjzyCN998EwBw/vx... | [
"f(t) decreases by 2",
"f(t) decreases by 6",
"f(t) decreases by 4",
"f(t) decreases by a factor of 4"
] | null | 2 |
science | grade-5 | match-chemical-formulas-to-ball-and-stick-models | false | true | Select the chemical formula for this molecule. | "iVBORw0KGgoAAAANSUhEUgAAAV4AAAEICAYAAAAX/JzwAABR1klEQVR4nO29eZwc1Xn3+ztV1XvPPiONthGSMMYIZEiwjRDGGAfb2Ga1k/AGXkyMMQmx39zESW7s9743Xm4W27F9CQlegglxnGu/XlgdsFlisDESYAxSMBiQkJA00sxotp7eu6rOuX9UnZrTNdXdVb1NT8/5fhA901N71fnVc57nOc8hjDEGiUQikbQNZbkPQCKRSFYbUnglEomkzUjhlUgkkjYjhVcikUjajBReiUQiaTNSeCUSiaTNSOGVSCSSNiOFVyKRSNqMFF6... | [
"P3He",
"PH3",
"PH3O",
"PH"
] | null | 1 |
math | grade-5 | range-find-the-missing-number | false | true | Sharon has the following data: If the range is 11, which number could d be? | "iVBORw0KGgoAAAANSUhEUgAAAMIAAAAkCAYAAADb/OWuAAAG00lEQVR4nO2de2xT1x3HP/faSWwncRLnBQQCCckSB1jLIxACZAR1BZo2mkBIG1rRWDShorGqKp0mVW23CVZtquheCptUdbRdK5V2A1RIgTBRErokLQk0lBAW0qQhPBwMOA8/wL6++yOJN8NYA7kXW835/GP5nHPP7yv79z3nnnOvfSVVVVUAfzCIO6AQVFVUBIKvLxIgSxLxRgMxsjxcpqqq6gkoeBUlsuoEgghgNhiwGA0Y/cGgMIFgwuJVFIyyhCxMIJjo+BQFORA... | [
"41",
"49"
] | null | 0 |
math | kindergarten | count-sides | true | false | Which shape has 4 sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAEyUlEQVR4nO3dPW8UVwCF4bP+EjgYp0BBKVImadJRoPwB2vxMN0goZfgBRKKgckMIokHyIhnZ68Fre72zN8XiCBHb8XrvnLkf79OtVisG83p850jIgxBCGE6kv8dS00rTIGBpawNpa1X6cVN6uCENhmchvDzq+7JQssf3pbU34/mL7zekn7+ZVwgsq2ml18fS3kT6ayytHE3nbxAZYtpanTclSZ9aaaX94g0gpoumzoO00u+loBaEBgtCgwWhwYLQYEFosCA0WBA... | 1 |
math | calculus | determine-continuity-on-an-interval-using-graphs | false | true | Is the function f(x) continuous on the open interval ( – 2,9)? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB1wklEQVR4nO3deXQU550u/qf3bqkltTYkIZDYxSaxih0bB2Ic4zgGxwNxNjtOZuzJOufO3Jkzd25+d2Z8fXLvJDM3ie1JPJN4mewk2MRggbFZLQwCGYQkNiFAC0JLS92tXmvpqt8fshTEKkG9tBo9n3N8jFqqr76q6q5+6u23qky6rusgIiIiIiJDmBPdABERERHRvYQBm4iIiIjIQAzYREREREQGYsAmokF2796NCRMmYN26dQCAT3/603jzzTev+7OKomDJkiU4dOj... | [
"no",
"yes"
] | null | 0 |
math | grade-4 | identify-faces-of-three-dimensional-figures | true | false | Which shape has a circle as a face? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAZF0lEQVR4nO2dWXBUV3rH/y2pJbe2lixBg+SAMCBhDAaDQOybsT3jeIntjPdtvI9n8VQqk8dUXlJ5SF6Sh2QeUpVKKq5KKlWplGcqrpRtjLEZQAhjDFj7jvaFltRq1FI3nYfvHt+rlZb63Hvu8v2qVPe0hPp+SPqf75xzz/n+vmQymeyfBlqiwEQCiCfBMIxJZPmAgkxgcy4QygZ8/bFksnZcdVgM4z1qCoGs5ii9WJsNVOWROhmGMYeJBNA4CfRNA01RIGM8Tl9... | 0 |
math | pre-k | tally-marks-up-to-10 | false | true | Count the tally marks. What number is shown? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABBCAYAAAAngwHRAAADCUlEQVR4nO2dMW8SYRjHHyxJ5a6JTQ7RpJbKIo00KZqgQ6cO3RpHv4CrrnVz6KZzV+NqHP0ATi7UpNUEGtrEUHExAklJeockEBysynFwdw8+eG9e/r+RHP97cz/uee9euIdYv9/vE1CGS1EPALjxFVIptei43BLbmXSejsSHX3DsLr1+9ZkOig1qO70/r29sXqMHD1combrM2oFjd+ntmy/0/t03kTzdiQ3OIYfFJr3cq7gO3CAJY452dtcpnVkIFV6rntOLZ5/E8mY... | [
"2",
"7",
"3",
"9"
] | null | 0 |
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