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-5 | multiply-unit-fractions-by-whole-numbers-using-models | true | false | Which model represents the product 4×
1
4
? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAaAAAACOCAYAAAB359yrAAAFGUlEQVR4nO3az2vcdR7H8fekaRm0rnNwFfHHrgftQaG9WSilsJ72sNKbiCL9D9pbobD0FrCX/g0FQXrN3hfKmB56apfm4CpC24PV8TA0tY7dhu8ehrgrhICZT3x9aR4P+JKGwKefyevwzMAMuq7r7j+u+vpR1cZm1ZOuAKC55UHVcweq3nym6qVDVYP7P3fdjQfpawGwn7z7h6rlrx7Nv3n5UNWRZ+d1AoDWNjarvvyx6tvHVf9+VLX04Mn8B+IDwF567sC8NVV... | 1 |
math | grade-8 | quadrants-and-axes | false | true | Look at the coordinate plane. Which quadrant is the point ( – 3,1) in? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AAA0TUlEQVR4nO3df3DUdWL/8dcma0IS8gsCBDBErYAaAvJDficnh7QoFlFhPEbvpFKnOOPg3TA341DrtPZk7HToKf6YlvZG2pHWMYO1lws2ggghiFxAIEBggDsDGBJCyG82u8v++P5hN98ACezq+5PPfsLz8Zf7SXjnNW93P5/Xvve9u65wOBwWAAAAACMS7A4AAAAADCQUbAAAAMAgCjYAAABgEAUbuMUVFxfrk08+6b7929/+Vvfee69CoZB9oQAAcDAKNnCLmzhxoo4... | [
"Quadrant II",
"Quadrant I",
"Quadrant IV",
"Quadrant III"
] | null | 0 |
math | grade-2 | equal-sides | true | false | Which shape has 3 equal sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAHDUlEQVR4nO2dW28TZxCGxwmglkIr9aJVK/WyVOof4KY/pP+t/4BjJLggqkBwYWIICZBEWAlJZUQkp67k9WHtrNldby8MbQAnPu3ONzPf+9zk4MNOnMeb3ck375ayLMuO3hHt94m6KVGSEQALc65EdHmZ6OeLRN9fICodDbLsacd1WcAyV78mOve6P/rihwtEv3w1shCARemmRLs9ovo7or0+0VInGd0AyUCeXF4eOUVEFKZES+mJGwDIkw9OxRnRkttSgC9ANMA... | 0 |
science | grade-3 | natural-resources | true | false | Which of these pictures shows a natural resource? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAV4AAAElCAYAAACszooYAAEAAElEQVR4nOz9S5MjSbK2iT1qF3cHEBGZWd2nz1yEQpGZxfwJ/v8Nd+QIP86CIpzhnK9P36oyMwKAu11UuVBzAJGV3VWn5/Ss2ru9EAk4AIe7mZrqq6++Kv/3L2b/0wmeI//c/rn9c/vn9s/tP3F77fC/nOH3BT4l+L999OfDP43uP7d/bv/c/rn9Y7bnCP/Tyf9+6/fnwz+N7j+3f27/3P65/eO23cZWuz+Xvnfgl9ev7/4tIu8ezezdv2+bGaZG3zasVHrZ6GW... | 2 |
math | grade-2 | match-digital-clocks-and-times | true | false | Which clock shows three thirty-five? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMIAAAB5CAYAAABr7P6HAAAHaUlEQVR4nO3dP2wb1wHH8S9lyYOrkEvdpkBZwENbxKelQ2uIXQQ3KeShQyPpbisQN8oUwFQcIJtk0lMLOxYBbzbkopNJSQ7QDlb/bAVYIEuXOwNpOvWMxrW73MmRIcnsdThTodTWOh7veGT4+yw2IfK9J/J+eo/33rvLBUEQPNqDv+3AdgueB4h86Y3n4JUT8O1T8PWTkHu0GwQf+1k3SyQ75/Iw/ulO+OAbJ+G7XwlTIvJlt92CTz6Hz/bgrzsw5j8Pf6AQyCh... | 1 |
math | grade-1 | compare-size-weight-and-capacity | true | false | Which glass is taller? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAFQAAACuCAYAAACoYiq+AAAXTElEQVR4nO2dfXgU9b3oPzOz79nsJiEkISQQSDCQBKgihaylolcFFesBuVB7Kr0ej8fb0xefY22f1t7SY9vTc9qLenzpPSq+3OKxqLX1HL1KvNZbwTahIuUt4T1AXgiEhCT7vjs7L/ePTQKRELKbCUnqfJ6HZze7M/P7zmfnN7+X+Q4j6Lqun5bhaASCKig6JilgESBTglkuyLeBcDqu6x8FxjqsvwwWecByJJL8Y4oNyjOStk2GT1CFQ2E4JcPhCIgBJfmFKTM... | 0 |
math | algebra-1 | identify-direct-variation-and-inverse-variation | true | false | Which equation shows inverse variation? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAACgAAAArCAYAAAAKasrDAAAD1ElEQVR4nO2YT0gyWxjG38SStLQs+kNCSpgSYUW0E4ogKAhCqLX0Bze1cGGrsEBatYkWEbZoERZlEGFQFC3KWpQEobmIMiaEKAqlNExKfe6i2/AN2b3czz69Cx84i3PmGebHM++ZOefkAAD9j8XLNMC/KQuYqrKAqSoLmKoyBnh2dkYGg4Gi0SgREQEgs9lMu7u7XCMypFAoBJFIhLW1NQCA2WxGe3s73t7eOD5+BsIjIqLCwkLq6+ujpaUl4vP5tL6+TkdHR5S... | 1 |
math | grade-2 | compare-clocks | false | true | The clocks show when some friends got the newspaper yesterday morning: Who got the newspaper first? | "iVBORw0KGgoAAAANSUhEUgAAAlUAAACiCAYAAABoDjg6AAAsqUlEQVR4nO3df1zT9d438NdgG4NtbCgKlAYqdKhMgTqJmUhqpVinzPxVniPpua46x9/eV6XXsTu7r9Ku+1zHLPN0e58wvE+/wKPR1YG0n4CZWAloVNRERqnbFHCwDQYb2/0HMZn8GvDdD/D1fDx85L777rs3y9eH974/Pl+R0+l0gvrNePQIGk98BXPFKZi/q0CT5kd/lzSkhSVcD8VNN0MxcRJUU6ZCdVuqv0uiIYi5FBZzSdQ/IjZV/WO/VI/v1/0RdYcL/F2KR0R... | [
"Marvin",
"Tim"
] | null | 0 |
math | grade-2 | find-the-next-shape-in-a-growing-pattern | true | true | What shape comes next? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADhCAYAAAC9ZMGZAAAZqklEQVR4nO3dXYwdZ33H8d/Medn1eu11DNgJcQzFRcgBYdSAUOoEoqoCVSI3uepF73rX296CKkrUqhJJJKKCoVFoIxHCRVw3MTZxaYjJixOCozhxsBN7/bK73tf47HrfvGdee7FZv8S7Z8/bzDzzzPcj+WLXZ848/+dF+p3ZZ+Y4cRzHAgAAAGAFN+sGAAAAAOgeAj4AAABgEQI+AAAAYBECPgAAAGARAj4AAABgEQI+AAAAYBECPgAAAGARAj4AAABgEQI+AAAAYBE... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAz4AAADhCAYAAAAJS2C/AAAekElEQVR4nO3dW2wc153n8V/1jRRFkbImI9nxJd5og4GTzDhYT5DN2kmMxcDBAJOXzMsuMMA+LLAP+7qvCRbZBDNYILKBGJsoWcOeDRDHebCGY2vkSJOxpTg2ZTvyWBdHsilSvIlXuVsi2S12XfeBpi4W2WR3V1edOv39AHogxapz/udUFfrXVX3aiaIoEgAAAAArOI6TdheMlEu7AwAAAADQaQQfAAAAANYj+AAAAACwHsEHAAAAgPUIPgAAAACsR/ABAAAAYD2... | 0 |
science | grade-6 | match-chemical-formulas-to-ball-and-stick-models | false | true | Select the chemical formula for this molecule. | "iVBORw0KGgoAAAANSUhEUgAAAWgAAAC2CAYAAAD0phc+AABGw0lEQVR4nO19eZQdxX3uV9333rmzb5oZbaDRBkJAnm1MWLzEYGJDngH7eMVAAsYPHEhiO8I4OE6c5OQdY1bLxMfwnASHJE4cjIHjLWAS24RjtjwHMHYeIJBGghlpRrNvd+uq90d1Vf2qumc0kma5M6pP5+r27a6u7tvzu19//dWvqpgQQsDDw8PDo+oQLPUJeHh4eHikwxO0h4eHR5XCE7SHh4dHlcITtIeHh0eVwhO0h4eHR5XCE7SHh4dHlcITtIeHh0eVwhO0h4e... | [
"H2S",
"H3S2",
"S2",
"He2S"
] | null | 0 |
math | grade-3 | purchases-do-you-have-enough-money-up-to-10-dollars | false | true | A beach blanket costs $6.30. Do you have enough money to buy it? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAFpCAYAAADp8FyYAAEAAElEQVR4nOy9ebwkVXn//x4QOK0sp1CwC0HnuGDq4kI3aOx2nVajNq534pK5ceNCNLlEY2bij4RRoxlIojNx+TJ+Y5KLRp0Ro3NxgVYUG42xrybaTYy5FeNyxrhUu9YRwT6AUL8/Tm197x0Y0IQJ3/q8XjO3u7rq1Kmz1XOe5/M8z4YkSRIqVKhQoUKFChUqVKhwl8Bhd3YFKlSoUKFChQoVKlSo8KtDJeBXqFChQoUKFSpUqHAXQiXgV6hQoUKFChUqVKhwF0Il4N/... | [
"no",
"yes"
] | null | 1 |
science | grade-2 | identify-mammals-birds-fish-reptiles-and-amphibians | true | true | Reptiles have scaly, waterproof skin. Most reptiles live on land. A coral snake is an example of a reptile. Select the reptile below. | "iVBORw0KGgoAAAANSUhEUgAAAtMAAADMCAYAAACx6y9WAAEAAElEQVR4nOzdd7wcdb34/9fM7uxsr6f3lpNeSW+QhJKEEFqAUBSBq165FkCQJjauogYEgaCIIlUpSodAEkJ6byflnOT03s+e7XV25vdHfpwvgQhJjFevd5+PRx6P7O6Uz372fT77ns+8Z1bQNE1TFAVVVUlLS0tLS0tLS0tL+2KiKKLX6xGSyaSWTqTT0tLS0tLS0tLSTo0oiojpRDotLS0tLS0tLS3t1KmqivjPbkRaWlpaWlpaWlra/1bpZDotLS0tLS0tLS3tNKW... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA4IAAADeCAYAAABorb5wAAEAAElEQVR4nOz9aZBs6V3f+37XvFaunKfKrHna8+7duwd1q7slgdRIICzJiEkMJ4zNAeJcxw1fMMSV7XsJHEGEzw0P4LgYfAljPBzANpgZWbIkGrW6W6LH3Xveu6p2zZWV87zm6b5QWLYwxzTQAszJT0S9yLUy1/PUqt96qv65nnxKABJmZmZmZmZmZmZmZv7YXh0lnDMhI/1592Rm5g83ieC+Bac+FGR4V/5L28U/117NzMzMzMzMzMzM/E9sVgTO/EWXkb6UU4B... | 0 |
math | grade-4 | is-it-a-polygon | false | true | Is this a polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD7CAYAAABQdOO0AAAeFklEQVR4nO3deXTU9b3/8dcsWcnCEiAEAkkIWejvQm+rVtEW61ZRQRRBapUtaWuvVq+tbUj5ueHFEPTqtV5bjyasriAqomK1WrEK1q0X7jE7SQgJBAiELCSTZGa+vz/q8QdYNcBkPrM8H39ySPI6nPzxJJn5vm2WZVkCAAAA4BN20wMAAACAUEJgAwAAAD5EYAMAAAA+RGADAAAAPkRgAwAAAD5EYAMAAAA+RGADAAAAPkRgAwAAAD5EYIeYPzWUavH2i/TnxrWmpwA... | [
"yes",
"no"
] | null | 1 |
math | grade-7 | classify-quadrilaterals | false | true | What name best describes this shape? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACrCAYAAABc+utDAAAZD0lEQVR4nO3df3DU5b328WuzbH4uJPAkHEzwCM7AQEEaBW0THAYDyYACzxkYVChQKZTJEY5CpfJgsxKaKEVxihUZqqAdQH5I45wK58BJQuBwTBgsEQZ0wPCUhEoCJSlJYPODTTZ7/gjGECkmsrvf3e++XzPOrGbdvaL+cd1f7/tzWzwej0cAAAAAvCLM6AAAAACAmVCwAQAAAC+iYAMAAABeRMEGAAAAvIiCDQAAAHgRBRsAAADwIgo2AAAA4EUUbAAAAMCLehkdAP5... | [
"rectangle",
"parallelogram",
"trapezoid",
"square"
] | null | 2 |
math | grade-1 | addition-sentences-up-to-10-what-does-the-model-show | false | true | Which addition sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABUCAYAAAC4PkCPAAAPj0lEQVR4nO3dTWxc13nG8efcj/nkkCNKokjZlSVLlo1AlpUmboE6sOE4cbtokbQp4HqRdNEsHKRomyy9yjLrdlOjXRQtigQF2qJwCqRBVkGMtghiB05qyJFly7ItikPJosgZDud+nS6GpEh90BryzpnhzP8HEJAGw3vOg7uYdw7PfY+x1loBAAAAyIU36AkAAAAAo4QCGwAAAMgRBTYAAACQIwpsAAAAIEcU2AAAAECOKLABAACAHFFgAwAAADmiwAYAAAByRIENAAA... | [
"1+4=5",
"2+3=5"
] | null | 0 |
math | grade-1 | rhombuses | true | false | Which shape is a rhombus? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAHwUlEQVR4nO2dwU9TWRTGv9JSkYoKDGOIkECA0ZUrEzcuXBgTwfknbQgJhI0jkBgXhpiQGFZsiCML0FRbsE6lWAq0vFlUZnR0RPruPffc+77fxggBbu799Zy+7913m4qiKCoeAhs1oNoEGhEIiU0mBfSkgYlu4EoWSBUPoujFruthkZC5dRHIvKq1/jOYBa7lWhYSEpdqE3j5CXh3CPxZAzp2G61vUDJikp50yykA2GsCHc0vvkGISU6cOoqADrdDIUmBohERKBo... | 2 |
math | grade-5 | identify-parallelograms | false | true | Is this quadrilateral a parallelogram? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACCCAYAAAB8Wb+9AAAMPUlEQVR4nO3de4yddVrA8efMnJ65naldScWmC0FgF1KFjaZGCLIJ4IbGkICuWFw2pfTC0GrRiEQJWXatIiqikRpK7xdCpCGbBUNiMQsYkBRjVwJksQQLQpeFWrtbO2dmzkzPnNc/Vt631e32MmfmPZfP5w+Sp5nMefrfl+aZ+RWSJEkCAABoiK68FwAAgHYisAEAoIEENgAANJDABgCABhLYAADQQAIbAAAaSGADAEADFfNeoNM8/a1a7NozFoM9hZjVnfc2kBkeS+I... | [
"no",
"yes"
] | null | 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 sizes. | "iVBORw0KGgoAAAANSUhEUgAAAfQAAABfCAYAAAAeejUTAAAQn0lEQVR4nO3dfVBT95oH8O9JFIKovAhXQN4WU+VWvFqLOipbi2IRjArVjm0X2+Eqa1mlO9Nh3c7q1jc6SnGo3rt3wdqiWLZutRRXGHWu1VbcujsiVrBVofiCLyDKW1QkQF72j45ZaawkIeGcHL+fGWZyknN+v+ecPMnDefmdCCaTyQQiIiJyaQqxAyAiIqL+Y0EnInKAc+fOQRCEXn9ubm6IjIzE+++/jwcPHtjU3uLFixEXF2dzHBcuXMCCBQvg7+8Pf39/aDQa/Pj... | [
"The magnitude of the magnetic force is smaller in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2."
] | null | 0 |
math | grade-3 | scalene-isosceles-and-equilateral-triangles | false | true | Is this triangle scalene? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACLCAYAAABbVu51AAAcfElEQVR4nO3deViVdf7/8dfhsIge5EAG7goRpo5pjfbTK+s3zbc9Tc1cs9wVyDXH0tHJ0lHTDPetTMbMNNc026yZab5WVJjlAiIioGmIK8oRZDny/cNwstBYzjk35/B8XBfXJbdwn9d9Xf3x6uP9eX9MxcXFxQIAAADgEF5GBwAAAAA8CQUbAAAAcCAKNgAAAOBAFGwne+eddxQQEKCNGzdec/3o0aP605/+JIvFotatW+u7774zKCEAAAAciYLtRLGxsVq/fr1atGj... | [
"yes",
"no"
] | null | 0 |
math | grade-2 | match-analog-and-digital-clocks | true | true | Look at the analog clock: Which digital clock shows the same time? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABN8ElEQVR4nO3de3RU9b0//Pfee265zCThIpAEuamQ0MrFSqJW7FMNnop1Pcdgj1RPW+xpbdc6HOwq2D9a7CrY31oKXULtWq16hPbU46USn+fxSHsk4jlNRRKtCFgmohKgTAwxhCQ7t7ns2fv5Y5IhQ+bynfsl79daLDJ7vjPzNcx2PvPdn+/nIxmGYYCIiIiIiFJCzvYEiIiIiIgKCQNsIiIiIqIUYoBNRERERJRCDLCJiIiIiFKIATYRERERUQqZsj0BygF+A/AbMMb... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA5AAAAEJCAYAAADiusiGAABZBUlEQVR4nO3de3RU5dk//O+ePaecJifOCYaDCgltAlhJlBL7VgO/irren2AfqdAWW7BdrzzYVaDrXRX6VuyzVoUuobpWK1Zoq4/aSnx/r4p9SKS/p6lIgi2SWCaicohMDDGETHZOc9iz9/vHJENC5rBnMud8P2uxkpm598zNMFv3Ndd1X7egqqoKIiIiIiKKCkEQEj0FopjRJXoCRERERERElBoYQBIREREREZEmDCCJiIiIiIhIEwaQREREREREpAkDSCIiIiI... | 0 |
math | grade-7 | bases-of-three-dimensional-figures | false | true | Look at this figure: What is the shape of its bases? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADwCAYAAAA6sxN3AAAguUlEQVR4nO3de3TU9bnv8c9cMveQAQKEEEggCfeodSGw1aDS9mhdtUq72a1oW627tqUVrRYq9rSn7Wnt6tldtcsCvR0E8VZ72aWYYBQRrKgI9VS5KUiAEIhByf02M8lMzh+TmZALISG/zCV5v/5B5hdmnoB/fHh4vt/H1N7e3i4AAAAAhjDHuwAAAABgOLHGu4DhrKmpSfX19aqvr1dDQ0OvPzY3N6umpua8zyP/vXz5cq1duzbe3xIAAAAugIDdTXNzc5eA29jYqLq... | [
"nonagon",
"circle",
"pentagon",
"octagon"
] | null | 2 |
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 | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAYUklEQVR4nO3deXgc9Z3n8XdVn7olSz4k+ZCNLwzGBhMOc5kzBGIIITOwO8lkGOaZ3U3Ck+yTYSYzmSSzhM3mYGbnSQI78zBJCMfAeB4gYJvTxsbGJtgYfIBtbMuWLFm3ZEtqtfqs2j9KlizJGBG1q1rS5/U8PDxqtap/7V/1p36/b9Wvy7Bt225KwKEodKchZSMikhF+Awp8MC8XpgbBaIrb9rYur5slIuPdpYXgPxh1figPwoI8J41ERDKhOw0f9UBjAg5Ewex... | 0 |
math | grade-3 | am-or-pm | false | true | Robert's mom is making eggs in the morning. The clock on the wall shows: What time is it? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACwCAYAAAA16xkbAAARLElEQVR4nO3dX2ydd3kH8OccOy3BJ4zypzmg/pnms6msgJ2bqcJOJwSSo2maUCLEmDbCRSkirqa2G04nNalwgGGjtbtoIkGlrQlLu1VLtI0bG5REQELL2EWiSWWd7KIJOhxGoSXHapPYPrtI7djHiX3ec3726Tn+fK7yx7/3fU7Ti+959LzPm6tUKpUAAACSyDe7AAAAaCcCNgAAJCRgAwBAQgI2AAAkJGADAEBCAjYAACTU2ewC6vX666/H8ePH48yZM/HCCy/Ej37... | [
"8:00 P.M.",
"8:00 A.M."
] | null | 1 |
math | kindergarten | represent-numbers-up-to-10 | true | false | Which group has 10 triangles? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAEcCAYAAAAV9AvgAAAN8UlEQVR4nO3dT08j2RnF4QPdM4tJM+oeRYmy7yRbxIJ8inxQZOEFkVxe2DtWY28tazKRvADa0GkVkmvcYkhBZcHQAwa3je371q16f89qwMbc091z/Keq3rtVFEVxfi3957OU3Uh5IQDYiNdb0s4r6a/fSX/+Vto6/7UofpyUvSwAdfeP76XXP3++++Iv30p//8NdGwHAJmQ30k9TaXwt/fuztD3J726gbABs2s6ru26RpF9upO2bBzcAwKbdd8v/Cmm73KUA8IT... | 0 |
math | grade-7 | mean-median-mode-and-range-find-the-missing-number | false | true | Harry has the following data: If the mode is 7, which number could w be? | "iVBORw0KGgoAAAANSUhEUgAAAIMAAAAkCAYAAACqhIkwAAAENUlEQVR4nO2cTUwcZRjHfzPs7izssruVZYHyUaAgpkUQCaUhaUNs4sl+xBgPejMmpgePeqiXphcPmnixqTdvjV5MTIzECEkbQaEqxCWhKU3LwvK5H7QLu11mv8bD4iixfkTfYbvt+7vNs8nzf5L57zPPvO+bUQzDMADIgbEDFIBiRPI4owAqKE7AthsyDMMwdgC9hIVJSotWNIVq5JBGeNLRwciBKo0gAUAHlXypq5A8EuRBlcOiBAAD1FLXIHl0kGaQmEgzSEykGSQ... | [
"7",
"6"
] | null | 0 |
science | grade-3 | compare-properties-of-objects | false | true | Which property do these three objects have in common? Select the best answer. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADQCAYAAAByQhWRAACruklEQVR4nOz9Z5NkWZaeiz1776Nce4SHzoyMzKwUJbJ0VWs16O4ZjMIAxAAc4BppxvsHSKPxB/AjafxyL41moNklAV4Im4sZkIPRmO6e6WlZ1aW7dGoVWrt2P2Jvfth+wj2iIiszu7Iys2rOY+bmHu7Hj4rj7u9e+11rCWOMAej1eqysrNBoNIjjmIyMB43jOJTLZWZnZwmC4FPdVnb9ZzxsZNd/xj9k7uf1n5HxeUQYY0y32+Xy5cssLCwQBAGu6z7o/crIIIoier0... | [
"hard",
"colorful",
"stretchy"
] | null | 0 |
science | grade-7 | identify-ecosystems | true | false | Select the prairie grassland ecosystem. This ecosystem has:
warm summers and warm winters
a rainy season and a dry season
soil that is poor in nutrients This ecosystem has:
warm, wet summers and cold, wet winters
soil that is rich in nutrients
only a few types of trees This ecosystem has:
hot summers and cool winters
a... | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAp8AAACtCAYAAAD2xRSHAAEAAElEQVR4nOz9ebAk6V3fC3/yyX2pvc6+dp/epqdnRqORRqNdoAEJhH3Bcgi4gMA2ARGOa+MFO/DymnjtCCNfsF8MxsFrsLGxQgaubCGzGbAkpJE0izSj6Zme7un99NlP7Utm5Z7P+0e1GjfILH4vGuJSn4iK09VZmSezsp44v/ot36/yhaGUZ10oqcyYMWPGjBkzZsyY8SfCOIerASijTMpZ4DljxowZM2bMmDHjT5pxDoqUUr7WJzJjxowZM2bMmDHjzwba//j... | 2 |
science | grade-2 | identify-animals-with-and-without-backbones | true | false | Select the animal that does not have a backbone. Hint: Insects, spiders, and worms do not have backbones. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAACwaElEQVR4nOz9d5wkx3Xni34jIjPLtZ3umemxGANgBjOEBwae8ABBECRAI3pJJCVKy9WuVm+1+7R6K+3qau++fVeOoiRKlKFEUnQASJAEARKWIOE9Bt5jDDC+e9pXVWZGxP0jMjKzqquB4UJ/3Pf5KD6fnunOysoMc+LEOb/jxMNT1m5qQL/iX9u/tv9HthkNL8zB3hiGAzh3yF2X/0q4/9r+n976FWxquN9ndXFd/ivh/mv7/4fm6TSxxbWg140//ul9AFhrEUL... | 0 |
math | precalculus | outliers-in-scatter-plots | true | false | The three scatter plots below show the same data set. Choose the scatter plot in which the outlier is highlighted. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUYAAAFGCAYAAAAW1zbwAAAtVklEQVR4nO3dfXBT14E28OdefVq2JVANGUMAT5BDTNaQYrBxgt4J2UZhdrOz005InDZJtzZts85CSDtpkx06eNksOyqUaQhQwqT1ZHbXWyBt0mwnUzbTQp0lxlbi5dMmtV0cCLBgR9hGyFdXH/f9Q7GwruXvK1uynt8f4Ht00bky+OGce849R1AURfk/GWj3AzfDQEgBEVFG0QtArg4otAB3GAHh/wKK0tQ33ZdFRJQayqyAvs0fPcg3Akuyo6lJRJRJboaBT24... | 2 |
math | grade-8 | quadrants-and-axes | false | true | Which quadrant is the point D in? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH9CAYAAAAgWgsdAAA830lEQVR4nO3df3iU9YHv/c8kQ36SXxAgAUL8BagQfov8SipF+qBYRIW1rG21up6lz9Wj7eXpdXncrmfXrTzus5dbRevZuttHdo/u9shibRFsFBFiKNJAgQDBAmoAQ0IS8juTmcnM3M8fMDkJhJDo9849N3m/rotL5p7JnY9fZu77M9/5zozHsixLAAAAAIyIczoAAAAAcDWhYAMAAAAGUbABAAAAgyjYwBBXVFSkt99+u+vyb3/7W910002KRCLOhQIAwMUo2MAQN23... | [
"Quadrant II",
"Quadrant I",
"Quadrant III",
"Quadrant IV"
] | null | 0 |
math | grade-5 | types-of-angles | false | true | Is this angle greater than, equal to, or less than a right angle? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABaCAYAAACCNCH/AAALQElEQVR4nO3da2yV92HH8e/xBRuMg4FxS2Bz4wYUgYKzQMtlI1AyLlLjeEAgKFzSNmhTyrRQAUGWxk0rpcBCukEyiaaBhIhxCXFNNIMbx9QihASaOBEegtabWyAhjgADNsFgfPaigcHKNdj+Hx9/P29sPz6Wvjqvfvr7sZ9INBqNIkmSJKlRJIQOkCRJkuKJA1uSJElqRA5sSZIkqRHF5MAuKl9LUfm60BmSJEnSbYvE4h85HjtdybQ13yA9tTM52c8wfsCPaJ+SETp... | [
"equal to a right angle",
"less than a right angle",
"greater than a right angle"
] | null | 1 |
math | algebra-2 | describe-linear-and-exponential-growth-and-decay | false | true | How does h(x) change over the interval from x=2 to x=4? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABzgElEQVR4nO39eVxb5503/H+EJECsYjNgHLCJt4DBNglO7EDsJG6SxlkMTsdpX13SJ20nzd7pMn06M72nbZrJ/WuSJo7tZrplmbuvp3cTL23iYMeuN4IbL8TGBu9gsxgLEGhfztFyfn+4oghvyD4XQvB5/5MgOF99fS7p6HMuXTrSKIqigIiIiIiIVBEX7QaIiIiIiMYTBmwiIiIiIhUxYBMRERERqYgBm4jCLFu2DO+9994lf/fpp5/itttug8/nu+Tv161bhwcffFB... | [
"h(x) increases by 1",
"h(x) increases by 200%",
"h(x) increases by 3",
"h(x) increases by 2"
] | null | 3 |
math | algebra-1 | linear-functions-over-unit-intervals | false | true | How does f(x) change over the interval from x=1 to x=2? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABxO0lEQVR4nO39e1xU970v/r+GmeE6IMhlQAwawyVRQcWo8RY1GpMmbXY08Zbupukju9+T7t5/e+/z66Onp2e3O82vZ/f2bdrktD2nzeXsNomkJtnREOMFL4EoShQBjQJREGEGBgaY+5qZtX5/4FCIqDOwPq4ZeD3/SRhmvXi71sya93zmM5+lUxRFARERERERqSJO6wKIiIiIiCYTNthERERERCpig01EREREpCI22EQ0ysGDBzF79mw8/PDDAIAvfOELeOutt8a8r9/... | [
"f(x) increases by 3",
"f(x) increases by 300%",
"f(x) increases by a factor of 3",
"f(x) decreases by 3"
] | null | 0 |
math | grade-2 | write-subtraction-sentences-to-describe-pictures-up-to-two-digits | false | true | Which subtraction sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAfQAAAD6CAYAAABXq7VOAABA/0lEQVR4nO29eXAc1334+XndPRcGh0gQIkGKAmkekk2TlkzZOnZtyYfsSLFV9loVreV4rYqdqi3XL3H8c6pSOdbKVsWbVGU360q0katkVyQfydqWVD/Zkn8bRRHjUBZlpXSRIhWRlEhINECQuGYGc/T59o8BZjDEAJgTnml8P1UoATPdr9+HX3V/u997/Z7SWmsEQRAEQehqjF93BQRBEARBaB5J6IIgCIIQAiShC4IgCEIIsNpVcDD2KuTT+HNZ8qPniA9vRl+2ldi... | [
"47 − 5 = 42",
"48 − 5 = 43",
"46 − 5 = 41",
"47 − 4 = 43"
] | null | 0 |
math | grade-2 | place-value-models-up-to-hundreds | true | false | Which place-value model shows 156? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUYAAACSCAYAAAA5D2N9AAAYaElEQVR4nO3daZAk6X3X8W8elXdmHV19zbGzp3d12BYSCjkMApk1jpAdAiwwwisrQA5hBI4wWiwCgQOEJSGZCIUJ2wSEbSQsHMCKF0BYsnjhsAQsIYFAeG2k1e7sHDtH3911ZVVWVWYdvKg+qrOramd7pqt6pv+fjYqdmXrmn0/XTP/myXyezEfp9/v99RiuRBB2odNHCCHOFF0BX4MnHFg0QFlv9/vfrM26W0IIcTq8IwD9lWjwk2UDnnQHqSmEEGdJ2IWXG7A... | 1 |
math | grade-6 | identify-complementary-supplementary-vertical-adjacent-and-congruent-angles | false | true | Which angle is adjacent to \angle{4}? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEFCAYAAADZm5BpAAAjxklEQVR4nO3df3DU9Z3H8dfCUliVSxYHxT1oYmVW7xgkYITlx1wW585gT00cotcWTaDXS25uSkhQvODcD+hVYORXEu5umkxvmlDs/Sg5wZnTho7tZpQQadClnI7upWUpumI9u4v8WNAN3/vDyZ5LQkhgdz+7m+djxj/Cfnb3FfWPlx8/3/fHZlmWJeSsYDCowsJC0zEAAADGjHGmAyC16urq5Pf7TccAAAAYMyjYOSwYDGr//v1qbGw0HQUAAGDMsHFEJHdVVFSoo6N... | [
"\\angle{2}",
"\\angle{6}",
"\\angle{1}",
"\\angle{5}"
] | null | 3 |
science | grade-5 | match-chemical-formulas-to-ball-and-stick-models | false | true | Select the chemical formula for this molecule. | "iVBORw0KGgoAAAANSUhEUgAAAV4AAADPCAYAAAC9ZrlIAAA5HElEQVR4nO2daZAkx3Xf/5lVfc597OzsCWCxWBAkSPCmQJAAT0kUKVkiqcM0bYUpKeywrA+2+dkRkr5ZYUsOfXAowgrZpkQ7eIi2SClIk7RE8QApHgBBCQQBELvALrDHzO7OTE/fVZn+UJXd2dnV3VXV1TVVM++30Tvd1VWZWdVV/3r18uVLJqWUIAiCIFKDH3QDCIIgjhokvARBEClDwksQBJEyJLwEQRApQ8JLEASRMiS8BEEQKUPCSxAEkTIkvARBEClDwksQBJE... | [
"HF",
"HF2N",
"F",
"H2F2"
] | null | 0 |
math | grade-4 | compare-decimals-using-models | false | true | Compare 0.6 and 0.7. Use the models to help. 0.6 ?0.7 | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAC0CAYAAACuelsNAAAH3klEQVR4nO3dS0gV3BqA4c86/hRdMKjo4kQoUkqKBn+DgqIbdoEu0m0QCNUgiKAgmgXVOBpV0yCwJglBZg0cRERpQoOUILBGCYV0RSsr/Ed60pOdk31qZ/c84GAvWPptXcLrytxFvb29vQEAAKQYN9YDAABAIRHYAACQSGADAEAigQ0AAIkENgAAJBLYAACQSGADAEAigQ0AAIkENgAAJPrXr2w+W9WcNQcF4sjNv8fk4zqLDDZWZxEA3GADAECiX7rB7lN18Oduim5... | [
">",
"<",
"="
] | null | 1 |
math | algebra-1 | identify-linear-and-exponential-functions-from-tables | false | true | Is this function linear or exponential? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEqCAYAAAAvYSeKAAAee0lEQVR4nO3dfXCU5cHv8d8uIWYDeYGwpJtQdUGtqchjEKImEApUqjxtA2oqIqZNDnR4SR2cjulBDEnWbK3jGyRNeRHlZYxwykkBGSnlQRyPbUjtk3YetZFwIrGEE0JgeQkhvC45f3TM6R4cFbmSm733+5nJTPa6772u35+/ueba+3b8qvT/dCsM5M8bojXLj1od4yv5RUmK1REAAABgEafVAQAAAAA7oWADAAAABlGwAQAAAIMo2AAAAIBBFGwAAADAIAo2AAAAYBA... | [
"linear",
"exponential"
] | null | 0 |
science | grade-4 | identify-minerals-using-properties | true | false | Select the one substance that is not a mineral. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAANcAAAEYCAYAAADPtGNgAAEAAElEQVR4nOz917Nt2ZXeif3mXH6t7c3Zx1/v0gMJD7AMq8giGd0tkopmtxRSdzBab3rS36BHvSoUoQhFKPTACDFIRtOqqohioVBIAJkw6a+/93i3vV3eTD3sc+/NBLIKJJBZSID3i9hn7bPN2mvvNb81xhzzG2OIH0+VuuFBWeM5nuM5fgnMc7jvw2kCdR2+VVs+Lp8T6zme41dDWYMb3vL+In/2uHxOrOd4jl8dT3iUqmeP6Z/0wiQO/yaO55eGEOIXvKL4Gzm... | 0 |
math | calculus | find-inverse-functions-and-relations | false | true | The graph below shows a function. Is its inverse also a function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABoZElEQVR4nO3de3Dc9X3v/9dqd7Wru2TJloxBNsYXsJFv2ICNDSamQHFCsBNqkmlS0vRCTtPbdHqm0+nJnOZwmMy0aX9JkzTNOTmB9KQnLRMCBSMcA8Y2crCxsGVLgBHG1sVGN0u72vt3L9/fH2KFhW+S/f14tdLzMZMJWu33rbe/393Pvvazn/1+XbZt2wIAAADgiIJcNwAAAABMJQRsAAAAwEEEbAAAAMBBBGwAo+688049++yzoz//53/+p2666SZlMpncNQUAQJ4... | [
"yes",
"no"
] | null | 1 |
math | algebra-1 | model-and-solve-linear-equations-using-algebra-tiles | false | true | Which equation does this set of algebra tiles represent? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABiCAYAAABqHaQ/AAAJ20lEQVR4nO3dT2gc5x3G8Wd2Vpa928g2lRRJSWwqhyZSaEEOdmPSHFoTYvfgFtYNuhYC7qHtSaQQ0muQboZgVAqBEEpJa8s+FRaZ4jRK4sjGFnYdqWmRXamq/uzKXmWltf7tzNuDY4GxwVL0zuzO6PsBH2ZY3ue3Pj0Lo984xhgjAAAAAFYkKj0AAAAAECcUbAAAAMAiCjYAAABgEQUbAAAAsIiCDQAAAFhEwQYAAAAsSlZ6AHxzXq5PpjRi/Vwn3Sa3MbPl8gAAAGx... | [
"x+4=8",
"x+4=1",
"x+7=1",
"x+7=8"
] | null | 0 |
math | grade-2 | estimate-to-the-nearest-ten | false | true | How many marbles are there? Estimate. | "iVBORw0KGgoAAAANSUhEUgAAAZ8AAAEVCAYAAAA/yegqAAEAAElEQVR4nOz9aZBd13UmiH57nztm3pwTM5EAMUkiKdEi1BYlCnJ1t2i6pFfVlmW7Kkr+4f5RFVUR3WVFRdSPkuUX8aL0XtWLDkl+ryP6R8tVkqMlV7UVUVKJkvqJpGwOBkjZIimAExIDwUwgE5lA3hzvdIa91/ux9t5nn5uZQCZyBHVXBHlwb07nnLvPXmt961vfEkRE6FjHOtaxjnVsG03u9Al0rGMd61jHfvUst9MnsFkWNRXmboQAgEJZYuCB0g6fUcc61rGOdWw... | [
"about 40",
"about 90"
] | null | 0 |
math | pre-k | count-scattered-shapes-up-to-10 | false | true | How many shapes are there? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAFlCAYAAACeMpzjAAAWLUlEQVR4nO3dz2rc6JrA4ddTsb0/3nWyMLmkg8EkkLtomE3DMMu5jkAagzmXZLywZ+ezdzlFzcItkh7bKVVJ+v4+zz7hA8H7/pAl1dF2u90GAADQhP/IfQAAAGA+Ah8AABoi8AEAoCECHwAAGiLwAQCgIQIfAAAaIvABAKAhAh8AABoi8AEAoCECHwAAGiLwAQCgIQIfAAAaIvABAKAhAh8AABryLvcBADjc/d06rr4+xNN6m/sov3R8chSXX87i/YeT3EcBaJ47+AC... | [
"4",
"3",
"2",
"8"
] | null | 3 |
math | grade-6 | identify-complementary-supplementary-vertical-adjacent-and-congruent-angles | false | true | Which angle is complementary to \angle{5}? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADbCAYAAABX2OaCAAAp0UlEQVR4nO3df1Rc9Z3/8RckQZRYYLeJkuhCHM/JRnAGsrKcM7uYSTVnyGmjyalb4OSQBEWBaASNmODpGog/QtDURFshBg75YWRY7QmK22XWQ4PFztkWGwaylNYKwbVIlu7ZGd1gOYMM3z/S8DXmJ8nAHeD5+CuZuXPnNR7/ePn2cz+fkNHR0VEBAAAACIhQowOUlJSovr7e6BgAAABAQBhesOPi4rRmzRr93d/9nXp7e42OAwAAAFwVwwt2YmKiJOnYsWNKSEjQnj1... | [
"\\angle{3}",
"\\angle{1}",
"\\angle{4}",
"\\angle{2}"
] | null | 2 |
science | grade-5 | 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. | "iVBORw0KGgoAAAANSUhEUgAAAksAAABfCAYAAAD4ZYOmAAAQQ0lEQVR4nO3de1AU55oG8KdnYBguBx0CqGhcD4JBIB4VL0FNVEBQMfESL8RyrTUWC/GWuGVyrAoas7pVR4+FkpSXGA85uKhxtba2DJJkVytotLziikETEBQwMkKCgHIZLjOzf6ScFSHNDPRMDz3Pr8qqmbb7+97+/Pr1ne6eacFsNptBRERERF1SyR0AERERkTNjsUSdzJs3D4IgdPgTEBCA2NhYnDt3zqa2CgsLIQgCzp8/b3McRqMRaWlpUKlU2L17t83bE5Ey3Lh... | [
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 2."
] | null | 0 |
math | grade-7 | changes-in-mean-median-mode-and-range | false | true | Look at this set of 10 numbers: How would the median change if the number 28 were added to the set? | "iVBORw0KGgoAAAANSUhEUgAAAYkAAAAkCAYAAAB8KMY5AAAK2klEQVR4nO3da3BU9RnH8e9uNtlsNtkk5EJuhEBIFggEEaMIBVJtq2OrtYyo1am9OE5tO53WzvRF2+nUsdrq2NZ2OlbHqp32hYPV1hsKClYQrAQkhAAJ5LbJsrnfr3vJ7p6+WBKyJEtO6Dm7OD6fd5yzy3ny+5/8n3PbjUFRFAUAPygeIAiElgghhPgsMQBGMCQCpvOLFEVRFA/gjWFhQgghrizmULMw4kcahBBCiHBewA9GRRqEEEKIOSheMBKIdRlCCCGuSAEwyk1... | [
"decrease",
"no change",
"increase"
] | null | 0 |
math | algebra-1 | identify-linear-and-exponential-functions-from-graphs | false | true | What type of function does this graph show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAETCAYAAAAMFHHvAAAZkUlEQVR4nO3db2xcd5kv8Gfyp3ZitvGl2Akt4JptG6sJ1FHSNpG4UYu0KwIdUCuhIiq0olKl5QWvWfUFQkCjvuAdLQhUhcKiXdoF1FVStdpqScXdlZPAqAacyAF27dB7aTKB4qTrf/njc1+4Mx4nbuKJj33OmXw+UtXj8TMzj5xRzjfHv/N7SkmSJAEAAKRiVdYNAABAKxGwAQAgRQI2AACkSMAGAIAUCdgsaGpqKqamprJuAwCgcARsFjQ4OBiDg4NZtwEAUDgCNgs... | [
"exponential",
"linear"
] | null | 0 |
math | kindergarten | circles | true | false | Which shape is a circle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACbCAYAAACao4KyAAACfklEQVR4nO3cPU4cWRSA0dtNQ2BjJhuLBczMEtgQy/KKvAP/5MYp2EhmaJWDEtLkjb6Wes6J6ulJTzf4dMPaLMuy3D3NfH2cedjPPC8DB9ttZt6dzfz1Zub9xczm7teyfLw/9licspurmd2Xx/VwfTHzz9u1QjjUw37m08+Zb08znx9ntvfP64XIeE3vztamZmZ+7Ge2+/9cwGt6aerfZWZ73FH4vxAaCaGREBoJoZEQGgmhkRAaCaGREBoJoZEQGgmhkRAaCaG... | 1 |
math | grade-1 | more-less-and-equally-likely | false | true | On which color is the spinner more likely to land? | "iVBORw0KGgoAAAANSUhEUgAAAc8AAABkCAYAAADg1LuyAAAPvklEQVR4nO3dWXBU14EG4F9oa7WWvi0kQBgJbZhFK91iGUzYhAvHgHEgBklgMAwpJolJhoyxsZOxnXkBYxLPVE3FlYyX8qKFKkLAzkOMQRLgsjCom1WAQRsSYCMh+ra21gL0PHjwmFJLdLfuvae7+b8Xir6tc/5++uvc5dwgp9PpBBEREblthOgARERE/oblSURE5CGWJxERkYdCRAfwRldXN2S7DNkmwybLsMsyAMAgSTBKEiSjBMkgITJSLzYoEREFpCBfvmGotbU... | [
"white",
"neither; white and blue are equally likely",
"blue"
] | null | 1 |
math | grade-8 | identify-linear-and-nonlinear-functions-graphs-and-equations | false | true | The graph shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABi6ElEQVR4nO3df3RU9b3v/9dkZvI7kJBAEtEEEKEGExQFC0LFg0c90tpC26vt6g97bM9p77G/vv2eu7rOartuW6+ra51jz7fW9vb2nJ5ae/r99tZ7rKeCkWJFoKGCRAgkUEWEkAD5Mckkmcn82LNn7+8fIZEISAL7w2Tg+ViyzExmv/LO/sx85j2f7Nnjc13XFQAAAABP5GS6AAAAAOByQoMNAAAAeIgGGwAAAPAQDTaAMe973/v07LPPjl3+3e9+p+uvv16O42SuKAA... | [
"linear",
"nonlinear"
] | null | 1 |
math | grade-3 | parallel-sides-in-quadrilaterals | false | true | How many pairs of opposite sides are parallel? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEBCAYAAABCCtJ/AAAqU0lEQVR4nO3deXiU9b3+8fuZDCELWVhCIKwKCsiOioobUsUq9nShLi3VIgqKSxXE5dTTuvSn1YJSpKICgkpdKlWPh0pR68Iim0JI2BdZAkkIISEkJBmSyTy/PxIeA2Zkm8x3lvfrn+ajk+S+KlzXzXBnxrJt2xYAAACAgHCZDgAAAABEEgo2AAAAEEAUbAAAACCAKNgAAABAAFGwAQAAgACiYAMAAAABRMEGAAAAAoiCjQa9tvl/NDnrdlX7DpuOAgAAEFYs3mgGx3p... | [
"no pairs",
"1 pair",
"2 pairs"
] | null | 1 |
math | kindergarten | circles | true | false | Which shape is a circle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJgAAACaCAYAAABVCoEqAAANRklEQVR4nO3deZAU1R0H8G/39Bw7985e7ALh2oNT5F4REVOAiCGRaGKOqlRKTUxZMf/kn/i/fyRVqUryn0lp5agkRk3EgKkyWSSg6MICIueyh4DAXgy7Ozv30dOdPwYUDOLO6+N1z/w+VdTW7tLv/Zb+8vpt9+tuQVVVdTQPDKaBRBGQVRDCTBKAgANo8wJNLkAYzalqT5x3WaQSrQsC0kC69EmzC+jwldJHCKtEEehLASN5oD8NiHG59A0KF9FDwFHKEgAki4B... | 0 |
science | grade-2 | identify-mammals-birds-fish-reptiles-and-amphibians | true | true | Birds have feathers, two wings, and a beak. A robin is an example of a bird. Select the bird below. | "iVBORw0KGgoAAAANSUhEUgAAAtMAAADMCAYAAACx6y9WAADLh0lEQVR4nOy9eZxkVXn//z7nrrX2PvsMAwMDyCqKEhAILlGMK0sANXFLTNxx32LilqjBiAnuqBFBozExRqImCn5FYCTIIrIPDMy+9N61113O+f1xq2qqq6u6e4bWmfxy3q9Xz1Tde+455966Xf2ppz7neYTWWkdRhFIKg8FgMBgMBoPBsDBSSmzbRoRhqI2QNhgMBoPBYDAYDgwpJdIIaYPBYDAYDAaD4cBRSiEP9SQMBoPBYDAYDIb/rRgxbTAYDAaDwWAwHCRGTBs... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA4IAAADMCAYAAAAmsx3gAAEAAElEQVR4nOy9eZxcVZ3+//6cc29V9d5JOjsJ+yarIIKiIC6jKKKyKLiMojPuIrgvozOKoyiO6OCOOKLo6NcZN0YdERkRiIiAIqssIQlk6yTdnV6r6p5zPr8/zq1Kp1Pd6UAU5jf3eb0qqeUu5966VX2eej6f5xFVVeccIQQKFChQoECBAgUKFCiwcxhjSJKEm4fhwA7oso/1iAoUaI0RD38eg/V1mJPA03rj86YggQUKFChQoECBAgUK7BpCCDjnChJY4HGPLht... | 0 |
math | grade-3 | interpret-line-graphs | false | true | A team of biologists monitored the number of gray wolves in Montana. In which year did 8 gray wolves live in Montana? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFtCAYAAAA9PB1eAABZsklEQVR4nO3dd3iV5eH/8fc5ycneJIFABoSEEVbCCCBDpoIoLhSpOFCp1k3ratX+WlfVfhUraq1aUatWpYLWCooyZe8RkkggJGFIBiFkr3PO7w+aUyJBAp5znozP67p6Xc1Zz+fcieGT+9zP/ZjsdrsdERERERFxCrPRAURERERE2hJPowPIT1uxYgUfffQRALGxsTz66KON7l+6dCmffvopAN27d+ehhx5ye0Zxj3feeYf169czbtw4pk+fDkBRURHz588nNzcXi8X... | [
"1984",
"1981",
"1982",
"1983"
] | null | 2 |
math | grade-5 | identify-parallelograms | false | true | Is this quadrilateral a parallelogram? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAlxUlEQVR4nO3de5xcdX3/8ff5njOzm91cl82NzYUQQiAk3AtIUSxVilWoFzRSUFp+FmopihWtP21//fXRSrVqAakPRdtoFbn4E6mCthVFkUsFDFQSQhKIIdksuW1um2wyO3PO9/z+yPKdCcluNtmZ+c7l9fzr+xlm5ryB/eOdb757TpCmaSoAAAAAZWF8BwAAAAAaCQUbAAAAKCMKNgAAAFBGFGwAAACgjCjYAAAAQBlRsAEAAIAyomADAAAAZUTBbjDp7v9W4anTlXT... | [
"yes",
"no"
] | null | 1 |
math | kindergarten | square-corners | true | false | Which shape has 1 square corner? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGGElEQVR4nO2dzW5bRRiGX+eni9KChBCIbSXoBokV6oY93AYsejFcBCsuggUklZJWaroglROpTlFipKo4cWo58Z+SHGdYHAW6I+ecme9nzvusGkWJR/M9jcfzKE4nhBAGl8Cfc2CyBIoAQhqz1gHurwJf3AU+uwN0Bhch7JxrL4vkzKMPgbXX8/KDz+8ADz8oLSSkKZMl0JsBf18CB3Ng5bwoP0HJSEzur5ZOAcB0Caws3/sEITG5ceoqACu6SyFtgaIRESgaEYG... | 1 |
math | grade-2 | which-shape-illustrates-the-fraction | true | false |
Look at the colored part of each shape. Which shape shows three-fourths? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAACgElEQVR4nO3dMW4TQRxG8W9tx0ghgQ6IUgNHSAUVSAi6XIGaklOkpOYKlCgSqShzgxBalNDGiaWYWEOxBEHpcfBiv/drrNVq5b/1drSFpdmmlFJOJ8nXcTKaJlclWiGDJtnsJw/Xk/vDpDm9LOXwrOuxtAg7d5LB8bg92Bomj2+3d4NWx2iaHF0kJ5PkyzjpnV21J4y9mjb7bdskOZ8mvekfJ7Sartv+KEmv21G0aAaHMTiMwWEMDmNwGIPDGBxmUHPR848f8vn... | 3 |
math | grade-1 | match-analog-and-digital-clocks | true | true | Look at the analog clock: Which digital clock shows the same time? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABOrUlEQVR4nO3de3RU5b0//vfee265zOQCyCVBbiIktNxsSbyhpxpsxbp6DPZI9bQHe9R2/Y6Fror9rtVCl2DPWhV6BO1arfoVerFqK/j7nVa0JuLpiUUSrOHSMhELAWRCiCEk2bnNZc/evz8mGRIyl2dumZnk/VqLRWbmmT2PYbbzmWd/ns9HMgzDABERERERJYWc7gkQEREREY0nDLCJiIiIiJKIATYRERERURIxwCYiIiIiSiIG2ERERERESWRK9wQoA/gNwG/AGPw... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA5AAAAEJCAYAAADiusiGAABaCklEQVR4nO3de3RU9b03/vfee265TRLCPcFwUSHBJoAtibfoqQaPoq7zCHqkQlusYLseOdBTsM+zWjhLsV2rQh9BXesoVmnVqq3g8zsqtiTa5xiLJFi5pGUiyi0yIcQASXZuc9t7//6YZEjIXPbcMpe8X2uxkpn57j1fhxnZn/l8vp+voGmaBiIiIiIiiglBEBI9BaK4ERM9ASIiIiIiIkoNDCCJiIiIiIhIFwaQREREREREpAsDSCIiIiIiItKFASQRERERERH... | 1 |
math | grade-4 | identify-faces-of-three-dimensional-figures | true | false | Which shape has a triangle as a face? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAmZklEQVR4nO2dV3Qc55mmn+qu6oQOiA0QIAEwiKQoUiJNZVmSbcmWbMv2zKz2+NgeH1m2KY8t+XIv93bv9tKe2R2H8eyEY48tybIkW4FmBJhFMApMYg4AETtVp6rai+pGIEEKobvr78b/nKPDIxIki+h++/v/L7yfYlmWdSMLZ1MQNyBvIZFIyoSqQMgN9wSg1QPKjYxl7Y85/VgSyeLjkTCoZ1L2/yzxwJo6W50SiaQ8xA04lYTrWTidAlcsb/+CFJ9EUn5Cblt... | 0 |
math | pre-k | ordinal-numbers-up-to-fifth | false | true | The first picture is a bucket. Which picture is second? first | "iVBORw0KGgoAAAANSUhEUgAAAaUAAABdCAYAAAAFZHluAAAbFElEQVR4nO2df3BUVZbHv+91d36R7kD4nUQQTEjSYkBgkjilmBWSwpEIkrgKaml0FKdqhViC1rqAIMzsCBmXRKskiIadWgG1w8yII24H3DhO1SYWLBHYbn46MHYSEMySNCSQ7n5v/3jp7nTSP153+nX3e30+VRTkvfvePQn59rn33HPPZXie50EQBEEQMQAbbQMIgiAIwgk5JYIgCCJmkMwpXbPxmPafPbj7Kyuu2ShCSBAEQQQmJKf0x04bNp266dfZNF+140Ivh7Z... | [
"boat",
"crab",
"bucket"
] | null | 0 |
math | grade-4 | classify-triangles | false | true | What kind of triangle is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACLCAYAAABbVu51AAAP1UlEQVR4nO3de3SU9Z3H8c+E3LjE2JgEBAoE5SYbMIBgIZBa8ULlxEVSCugqlyKYcr8JgSwigshNo1wsCwiU+zApga7u6Spus0AVSgMRUCmKXUREQAjhDsnsH5Sc4TFgZvI8eebyfp3DATIzyTf565ffec/v53C73W4BAAAAMEWY3QMAAAAAwYQFNgAAAGAiFtgAAACAiVhgAwAAACZigQ0AAACYiAU2AAAAYCIW2AAAAICJWGADAAAAJmKBDQAAAJiIBTYAAABgIhb... | [
"obtuse",
"acute",
"right"
] | null | 2 |
math | grade-2 | equivalent-amounts-of-money-up-to-1-dollar | true | true | Look at these coins:Which group shows the same amount? | "iVBORw0KGgoAAAANSUhEUgAAASMAAABNCAYAAADtqQKzAAB6nUlEQVR4nOz9dZhd53X2j38OMw4zo0bMDBaYHUOMsZ00DtRxHTdpm/YNNW8DpV+Spg04SR07iZ2YGQWWZDGONBppmOkwM+zfH/ucrZEpxrh9v17XpWtmNGfO2fvZe69nrXvd614yQRAEPraP7WP72D5ik3/UB/CxfWwf28cGHzujj+1j+9j+h9jHzuhj+9g+tv8R9rEz+tg+to/tf4R97Iw+to/tY/sfYcqP+gAEQSBf0EskEjhmpvF6vQhAMpHAarVQVlaOwWhCoVA... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA3sAAABxCAYAAABsvroYAAC9iUlEQVR4nOy9d3hc53Xn/7ll7vQGDIBB72DvnRQpiRIlS5ZcZLkqlpLYjh0ncRwn2RTnt5vdjZ3NZjdOnOLEdhzLvckqVCcpiSrsvYIA0fsMML3f9vtjgJFky7FoU8Xa+3kePiCJAXDf9w7OPec953yPAJhYWFhYvMGYpsl0CS7nIK2DZlkmCwsLCwsLC4srQhbAK0G3C+oUELCCPQsLizcB00WTI6k3+iosLCwsLCwsLN4abPKB/EZfhIWFhQVAf678sV6BRe7... | 1 |
math | pre-k | different | true | false | Which is different? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAF9klEQVR4nO3dW2yTdRjH8d/b01i7dZPuwEAOcwdhZjDQsJBwUDQkhFO4MHpHTESMoN4YD+HOeGFIMKB4ISa7MIEbdQGVgBFnonjBQBk4zA7MbSJbC92GPbK13etFGWKQ7d3o2+f993k+N4SM9f2l33Z0bfNW03Vd948BV2JAOAUkdYgc4tCAQjtQ4wbKXYDmH9X11hD1LJENjV7A0R1L/6XCBTzqSd8aRO4Ip4DOKDA4BnTFAFsomf6CxM5NhfZ0WwCIpABb6q4... | 2 |
math | grade-1 | equal-sides | true | false | Which shape has 4 equal sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAH5klEQVR4nO2dzVMTSRiHfzMhKRAMfkQBlyuLh/WgBykvlBe9sFXiurt/5K6ueOAiF4uLJQc94EGWPbICCqLhU0im99BhiTEfPUnPTL9vv8/FsoKh3+4nPenuX7WBUkptHAP/HAC7VaCiIAg90xcA53PAxDlgpAAEG1+VWipn3SyBM1NFoG/1QP9lrABMDmoLBaFXdqvAyj6wfgz8fQCE5Yp+QSQTbHI+p50CgL0qEFbrXhAEm5w6daKAMNumCL4gogmpIKIJqSC... | 0 |
math | grade-4 | identify-parallelograms | false | true | Is this quadrilateral a parallelogram? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADVCAYAAABt0ofyAAAh90lEQVR4nO3d+XNc9bnn8c856k2tfV9tWbJkE7hMyOaZDFQ5t+LUxHPDTchA2AxmDWFIWIoE7vwHk0AqgwnjIQQMxuBLQgiE4TI3DGByzVDA1MANcTDeZMmydll7q/v0cuaHlrtlsGS11NLp5f2qoqq/qj7SY9Rd9emj5/t8Ddu2bQEAAABIC9PpAgAAAIBcQsAGAAAA0oiADQAAAKQRARsAAABIIwI2AAAAkEYEbAAAACCNCNgAAABAGhGwc9Abr03q6cdHNDoadbo... | [
"no",
"yes"
] | null | 0 |
math | grade-8 | identify-lines-of-best-fit | true | false | Which graph shows the line of best fit for the data? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAWYAAAFtCAYAAAA04cDVAABH8UlEQVR4nO3deXxU1d348c+dNStJSEJCCAlrAkH2NQpUqlYeERSEgspjeVQe0aqtCy0/29q6Ua1b9VELKopba6ViZdUqsmhYJCyBhEAQJCSEBBLIntnv748hgbCGZObeSfJ9v14acjP3fr8zc/Kdm3PPPUdRVVUtdsAPtVDlBpeKEEIIDZkUCDdC7xCIs4BSbFfV7yv1TksIIQTAyA5g2l/r/aazBVJDvVVbCCGEdqrcsK8GjjogrxYMlS7vD6QoCyGEPsKN3ho... | 0 |
math | algebra-1 | identify-linear-quadratic-and-exponential-functions-from-graphs | false | true | What type of function does this graph show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAETCAYAAAAMFHHvAAAX/UlEQVR4nO3dX2yc9Zkv8GcSJ+NgAoYACSmHEhQ2LskKWzGLI9lhl3NxCGXaky5IqKpU9YKLSu3dStysUFUK6lblqtCqvajUqhK92W4QF6FiK1TCys7CS9w2AVvdJckihVDSYGgSj5M477nIGWPHk2Ym/tnzx5/PDfb4meHBJn6/efWb5ynkeZ4HAACQxIpGNwAAAO1EwAYAgIQEbAAASEjABgCAhARsqiqXy1EulxvdBgBAyxGwqWp0dDRGR0cb3QYAQMsRsKlqeHg... | [
"linear",
"quadratic",
"exponential"
] | null | 0 |
math | grade-8 | front-side-and-top-view | true | true | If you look at this object from the side, what will you see? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAGHCAYAAACK4yW6AABi30lEQVR4nO3dfVyUdb4//tcw3AgMDEIKRAH2ULc0E9g0NVasXKOln4qi0s+TUtFWnlLQ3ZPtWRtQT2u7R2c6cayTuBLumhgeyF2L6qyimeRNOrsYuWoygnIjQQw3Csgw3z+G68pBRG5m5pprfD3/+SYIfNz9bud1fXxf75fCbDabQURERERENuEm9QGIiIiIiFwJAzYRERERkQ0xYBMRERER2RADNhERERGRDTFgO8D777+P4cOH45FHHoFer5f6OERERERkRwzYdqT... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA3gAAAGHCAYAAADiNfCrAABvRUlEQVR4nO3dfVyUBbo//s84PCgMDEIKRAH2Uk9qrgOrpsYKlWu09FVRTPp5Uizcyq0E3T3ZOWuAelrbjs50Yq2TGASbgeKB3Eiqs4Jm4lM6uxiZWoygPEgQA4MCMszvj3HufEDkYWbuucfP+/XaV8nDzEW5u326rvu6ZCaTyQQiIiIiIrIKmUwmdgl0BxsidgFERERERERkHQx4REREREREToIBj4iIiIiIyEkw4BERERERETkJBjw7+OCDDzB8+HA8/PDD0Gq... | 0 |
science | grade-7 | use-scientific-names-to-classify-organisms | true | true | This organism is a salt marsh snake. Its scientific name is Nerodia clarkii. Select the organism in the same genus as the salt marsh snake. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOy9d7hmV1n3/1llt6eeNpOp6QVCSJBiBF4CMZTQBCQCIWgEIigBERQC+rNElCKIIoTeBQUD+lKul5euElpCCJlJBEJC6mTKmdOetstqvz/2mfNmkkllKMb9ua5zXeec53n22mvttfdzr3t97/sWIYRgrcV7T0NDQ0NDQ0NDQ0PDzw4pJVrrg3vMxrhvaGhoaGhoaGho+Pngvcdae1CPKRvjvqGhoaGhoaGhoeHnx8G2x+VBPVpDQ0NDQ0NDQ0NDw8+VxsB... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6IAAADMCAYAAABp7h4wAAEAAElEQVR4nOy9ebglVXX3/1l776o65049I7PMyCCYOOAQUYIDKnGIREVMiErUiMQhKmLexBATh2hMDOI8RxONmrwOv9fXOQNOIBK6IRoEVGTspqc7nHOq9t5r/f7Yp29saKBBHOJ7Ps/Tz3PvPfdW1a7aVV1rr7W+XzEzSymhqkyYMGHChAkTJkyYMOFnh3OOEMLduk0RuVu3N2HCTwM3CUInTJgwYcKECRMmTPj5oKqklH7ehzFhws+cMAlCJ0yYMGHChAkTJkz... | 1 |
math | grade-2 | identify-repeated-addition-in-arrays-sums-to-25 | false | true | Which addition statement describes the array? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADRCAYAAAD2Q8XkAAAZMElEQVR4nO3dP2gU6QP/8c/vh12KmUa7y661iZk0Bi4nTuyMkWyqKMox2hjulAwICinUbQ7u4M4F/2Cacwold90Ec2kzS+IdsRo01s6uXWwmB37b36/Y7D56CehsZjfBfb8grIw78zx8qg8Pzz7zf+7evfv/1IPu3Lmz41q5XN6Hmew/sjB2ywIAACCL/7vfEwAAAAC+Joea/+iVlbsvWZklC4MsAAAAsmEFGwAAAMgRBRsAAADIEQUbAAAAyBEFGwAAAMgRBRsAAAD... | [
"1+1+1+1",
"5+5+5",
"1+1"
] | null | 1 |
math | grade-4 | fractions-of-a-whole-word-problems | true | false | Sophie has only one stick of chewing gum left! She has promised to share some with her sister and not keep it all to herself. Sophie carefully tears the stick of gum into 4 equal pieces. Sophie keeps 1 piece for herself. Which model represents the fraction of the gum Sophie keeps for herself? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUoAAABKCAYAAADdXh2xAAACHElEQVR4nO3XsW0TcRjG4fdsJ0VIoEEgBgAKBkiRFcIGTMBATMAEkBXSpKcIoccIKjuxlBDrT3GyRPfZKMZW8jyNfbo76dMVv/uua6218U3ybZZM58ltC8CDNuqSg2Hyci95vpt04+vWziabHgtgOx0+TkYXs/7gxW7y+lFfUYCHbDpPzq+S7zfJ11kymNz2J0QSoHcw7JuYJJfzZDD/6wQAvUUTf7dksNlRALafUAIUhBKgIJQABaEEKAglQEEoAQqjVW/ojk/... | 0 |
science | grade-6 | 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? | "iVBORw0KGgoAAAANSUhEUgAAAmwAAAGZCAYAAAA0Im0SAAB2RElEQVR4nO3de1xUdf4/8NfMwDAMM4BcBcQ7jGkqCXkpS9St7SK2u13FbvutZLtuJbvtpZLd2u0mbd+vbaX228pcrLbddsMua5mYpVmgaF4avAuColwHGBhm5vP7A+fIyG2AuXHm9XxEwJlzPp/3GeDt+5zP55yjEEIIBLCamjM4evQY2tpaoVAofB0OEQAgODgYcXHxGDlypK9DIRlj/iN/xPzXvSBfB+BLdrsdVVVVEMIOtVrt63CInNTUnEFCQgKCg4N9HQrJEPM... | [
"neither; the samples have the same temperature",
"sample B",
"sample A"
] | null | 1 |
science | grade-2 | identify-living-and-nonliving-things | true | false | Select the living thing. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAEAAElEQVR4nOz914+tWZreif3W+rzZ3oSPON6kqczK8l3dbDZNkxwnYigBggReSLoYQX+C9C/oStCVrnghzMUAEggOyZlmD2uaPdXNrsqsyqx0J/PY8GbHjm0/b9bSxReVFIQeodV5MwJ6AwfnYEec7b5nv+s1z/O84sOl1o8DaBn8ze1vbv+TvK1r+DqGiwJ6Jvxut7lf/g1w/+b2P/Vby4DHQfPvqP4P98u/Ae7f3P7/4fZbnJb6P9xn/mW/+PcfGIxHA6LVGss... | 1 |
science | grade-8 | identify-rocks-and-minerals | false | true | Corundum has the following properties:
fixed crystal structure
pure substance
not made by living things
solid
very hard
found in nature Is corundum a mineral or a rock? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAEAAElEQVR4nOz9V7BlWXrfif3W2n4fb653edNWVmb5rmpXQKO7YRoEyCaGAc5oRiORIYgUKRsKRchE6GUUoRc9SDEToWBwRoqJ4QAkyOkBYRpA2+qq6urylVnp3c283h3vtt9r6eFkV1cDM13QJAqNBusfce255559zvm+9fn/J5TSmkeAEI9y70eHfrTL/wQ/ZYiPWYAeVTyEfkQJU+ojHuAjn/9PfviP+wX8BD9dfNzn26OKj5nnj3aF6iM05KMF/CffX0r5E2//xIL... | [
"mineral",
"rock"
] | null | 0 |
math | grade-5 | regular-and-irregular-polygons | false | true | Is this shape a regular polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD6CAYAAACbKDARAAAVlklEQVR4nO3dy3Lk9n0F4B+6gW6OLUu0rJkhOZOKZVeqYq/sypulss8mlafILg/kVWJXymUlZQ3JoW60JIvsBhrIoi+8jafRZF8A9PdtaImiRFtG1cHpA/yTqqqqAAAA1qK3618AAAC6RMAGAIA1ErABAGCNBGwAAFgjARsAANZIwAYAgDUSsAEAYI0EbAAAWKN017/A+/z53y/i6n/GMXydRfYyjcFxGoPjLAZHaQxfZ5EMk13/igAAcEdjA3Z5VcUP/zWKiIjrz8Z... | [
"yes",
"no"
] | null | 0 |
math | grade-1 | select-two-dimensional-shapes | true | false | Which shape is a hexagon? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAHv0lEQVR4nO3d308TWRQH8O+0MKFIEUOya58ggV0SDQ9KhAQDCn84vwwmsEEfjCasmGB8KPtAREYojg6zD9Wsa/zBzNx7zrnt9/NmsO1N+23nzp1z5kZ5nudHKXBwDiQZ8CkHUWUDEdCsA38MA7/HQHT0Ic93T7WHRb1sYRQYeHne/UcrBmaudVNIVFWSAftnQDsF/j4Haqefun9gyMilZr2bKQB4nwG17Ks/ELn0JVMfc6CmOxTqFwwaiWDQSASDRiIYNBLBoJE... | 0 |
math | pre-k | count-sides | true | false | Which shape has 5 sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAACdUlEQVR4nO3UO4pUURRA0VPVn8Bvphh1pA7BIQkOSHBKzsBPYmSbdmuDbRfP4CGYW+yCcq3oXi4cTrC5m2VZlsvbmc83M9e7mbtl4J+dbmYensw8vzfz9Hxmc/lzWd5fHXotjtmrRzOnn27Wy7PzmZf31wrhX13vZj78mPl6O/PxZmZ7dbc+iIx9eniyNjUz8303s9399QD79KepX8vM9rCr8L8QGgmhkRAaCaGREBoJoZEQGgmhkRAaCaGREBoJoZEQGgmhkTj... | 2 |
math | grade-3 | division-input-output-tables-find-the-rule | false | true | What is the rule for this input/output table? | "iVBORw0KGgoAAAANSUhEUgAAAMkAAABtCAYAAAALS0X9AAALeklEQVR4nO3de0xUZx7G8e9BBMHFQapAUSuryFoK4mXF2lqwalN3sfVSvFQLqRSzitQqmtg1Ft1erMaytQG1ddfEW9VFLLIVN2ZFxQq2sSquFbFSVIYsoBXRCnJxmP1DIUvt7lFB3zkzv08yiZkzc/JMhifvvAPnp5aWlmZFCPE/OQMc8FmmOoe44/mKRfJ+2JDnKxbhpDqEELZOSiKEDimJEDqkJELokJIIoUNKIoQOKYkQOpxVB7gfwV7DiA9OASAx9zlqLTcUJ3I... | [
"÷ 1",
"÷ 5",
"÷ 3",
"÷ 2"
] | null | 3 |
math | grade-1 | simple-fractions-what-fraction-does-the-shape-show | false | true | What fraction of the shape is pink? | "iVBORw0KGgoAAAANSUhEUgAAAUMAAABkCAYAAAAc7VI9AAASDUlEQVR4nO3deWyb933H8fdDPrxE6iStg7YkS5Ys25Jjx0cSJV3bIF3StCvSoe0OdNmKrSiGrtiwDtuAbcXQDRi2oRu6Nm3WdQg2oNhatMHiBG3QtWjaXLMVy5JvWdZhxzotUicp3nz2xyPSkm05oizyeR77+wKEGFJMfm2AH/+u5/dVNE3TEEKI+5xqdAHvZe7SHLFQjPhcXP+ajZNaTpGOpknH06Rj+pemaSiKgupRUT0qdrcd1a3irHDia/DhbfDibfDiC/pQPab... | [
"1/4",
"1/5",
"1/3",
"1/2"
] | null | 3 |
math | grade-1 | compare-money-amounts | true | false |
Which is more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAATMAAACYCAYAAACI9A7HAAB2M0lEQVR4nO29d3hc5Zm/f0/vqqORRr03S3LvvWPAxhAwARJKICTZJJu2IYUEAgm7m7Llu9lNYbMhoSb04oaNMbh3q1m9d2mkGWl6P78/RnNip4ANGIh/574uXy6yjs5555znPO9TPo9MEARhJAgdXnBFICwgISEh8bFHKQOTAkr0kK4G2UhAEE44P+rTkpCQkHjvLEwAZbs39herGsoMMUsnISEh8XHHFYFWDwwHoc0Lcmc49gXJkElISPw9YVLE7BaAOwLyyHl... | 1 |
math | grade-2 | ordinal-numbers-up-to-10th | false | true | The first picture is a plane. Which picture is sixth? first | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAmlklEQVR4nO3dfVxUZd4/8M+BoRgYGAwSugWk2ynxAQFb0xW4q1ep+fDb9t5WK91dH2ofRCt3+4la7Yp7Vz5trSbi3vvzAbfbNKvdrReUZb+yH+JDrYLgA65jDU+FhC4jw4ByZs7vj4sZZmAezhnOMMOc7/v16vUS5sw5hw9XF9855zrXxQmCIIAQQgghhBAii7BAnwAhhBBCCCGhhApsQgghhBBCZOS3ArutW8CdH11H9qftaOumUSiEEEIIIUQZfCqw//5tN9bVdnk... | [
"train",
"plane",
"bear"
] | null | 1 |
math | grade-8 | make-predictions-with-scatter-plots | false | true | Based on the scatter plot below, which is a better prediction for y when x = 61? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFhCAYAAABK/t0lAAAjPUlEQVR4nO3de3DU9f3v8VcSkiwJLAnFDW42eAExhOGSiRKiFgljqEpSSq2KGgWMHtGC1bZ2mCntpK023goDB40WW6CXGZVqavEMNWilnnOaxJ/7E0VIuIgBNoFcNCQkIZsE9vzBYduQiwl8st/N5vn4i+/3s9n3+8OM5uXHz/fzDfP5fD4BAAAAMCLc6gYAAACAUELABgAAAAwiYAMAAAAGEbABAAAAgwjYAAAAgEEEbAAAAMAgAjYAAABgUFAF7La2NrW1tVndBgA... | [
"91",
"41"
] | null | 1 |
math | pre-k | more | true | false | Which group has more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAdoAAACGCAYAAAB630uXAAAoZUlEQVR4nO3dZ5gdd33o8e9/yulnq7ZrtaveJeMiuWLjIjsGjMEGA6Y4QHjCJUDiQAjlktwbEkIaxZjQEhxfQjE2YESxjcGOmywJy+q9ly1abTl7dk+dmf99cbSqu6st54xk8/u8AXulOXO+Iz+/0VSltdYdOdidgqQLjkYIIYQQE2QpiJswOwJ1AVAdWa3X9J/v1RJCCCFefZaXgbUrVfiHhgDMjRamsBBCCCEmJunCjkFoz8HOFBj9TuEHMmSFEEKIyYubhZk... | 0 |
math | grade-3 | select-fractions-equivalent-to-whole-numbers-using-models | false | true | Count the equal parts. What fraction does this picture show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAA550lEQVR4nO3dfXwcd3X4+8/uzM5oV7urh9WD9WTLkZBjY8dORJw4JNg4JARilwQolABtfkBpEyhQKOmFwr2hUMpTWn5tfgRyCw20CYWGS4oDhKQONnFw7EQ4jowcK5ItR0/WSiut9nlnZ3bvH9/VrtaSkwABaue8X6+NtTOzM7OTf86e1/me4yoUCgWEEEIIIYQQLwr37/sGhBBCCCGEOJdIgC2EEEIIIcSLSAJsIYQQQgghXkQSYAshhBBCCPEi0n/fN/BrKaTBGi+... | [
"1/4",
"4/4",
"4/1",
"3/4"
] | null | 1 |
math | grade-1 | more-less-and-equally-likely | false | true | On which color is the spinner more likely to land? | "iVBORw0KGgoAAAANSUhEUgAAAc8AAABkCAYAAADg1LuyAAAQYklEQVR4nO3daXRT14EH8L8XjOUFPRmLkEXEmA6ExQt6IqRt0mFxQ5smkDRngmWcgJzQnjTt9JxpoEkmLRNO54SBzJx+7TQhNA2ySdpsp81MCGsnxMTWk8HYrDbeWGIM6AnvbJ4PLCVYMpL83rtPzv/3Dcnc+9en/7n3vXdfwsDAwACIiIgoYomiAxAREcUblicREVGUWJ5ERERRShYdIBbd3T1QgyrUgIqAqiKoqgAAqyTBJkmQbBIkq4T09DSxQYmIaERKMPMNQx0... | [
"white",
"neither; white and pink are equally likely",
"pink"
] | null | 0 |
math | grade-6 | interpret-histograms | false | true | A candy dispenser put various numbers of orange candies into bags. Are there fewer bags that had 21-30 orange candies or bags that had 41-50 orange candies? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADmCAYAAADvPPLxAAAwdklEQVR4nO3de1TU5b7H8ffMMNxEARFCxDQPmqmQCtkF3YoKpuJWSxOttLKstpXtLmZn79XldNZhp13U6pilnSwtsxIV8p5i3lHylua1BLmo4IX7xcE5f7iYHQo46sCIfV5rudb8rs/3Nw8sPvP4/H5jsFqtVkRERERExCGMzi5ARERERORGooAtIiIiIuJACtjSYMydO5cnn3yS1NRUACZPnsyTTz7J8ePHnVzZ1bsRrkFERESqcnF2AX8m27dvZ+3atRw7doyKigr... | [
"41-50 orange candies",
"21-30 orange candies"
] | null | 1 |
math | grade-3 | match-mixed-numbers-to-models | false | true | Which mixed number is shown? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAAloklEQVR4nO3deXCc533Y8e+7NxaL+1rcIEASPMRDJEVJlKlblB3ZcV25cuzYSTNukmY60ybxxJ5kOjmatGkz02k6nU4SJ23TxJnEsh3XVzx2rEiWJerifQMkQNz3sbj23n37xy5AHHu8u/vu4sXi95nxWCR23/cFv4NnH7ynoqqqyg425QmwsBIiFI5SYjfH/meL/b/NYtruzRNIo51AGhmfNDI+aSSEWGXZ7g1I5/I9DzcGFphbjA1cnpUQC8shFlZC+IKRlO8tdZh... | [
"3 3/5",
"3 3/4",
"4 3/4",
"4 1/4"
] | null | 2 |
math | grade-2 | which-tally-chart-is-correct | true | true | Jane was at the store. She saw lots of drinks. Which tally chart shows the right number of each drink? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAABS/ElEQVR4nO3da3Ck133f+e95nr4DDQyAAQYzGnJmeJd4sSPJulCiaDkiIyVxZcnU1mqdUkp2VC5VnES1Xu1uXmzKLnurUrWV2l29ibORklSK8UZMVchyxbbooSxRNkmJEi/i8DIkxZnh3AAM7o2+P5dz9kUDAzSuA0w3gG78PmULQD+N5zm4DX/P6f/5H+Occ4iIiIiISEt4ez0AEREREZFuooAtIiIiItJCCtgiIiIiIi2kgC0iIiIi0kIK2CIiIiIiLaSALSIiIiL... | null | [
"iVBORw0KGgoAAAANSUhEUgAABKAAAAEOCAYAAAC+d2+FAACh6UlEQVR4nOzdd5xcVf3/8de5d/r2kt0kpCcQSgBBioAQQEAswI+gCCoR+aKCqKggFoiKKKBgAVH5Iooa7EgkCCLwDQQhSIcQCImkJ7vJ9t2ZnXLn3nN+f8z2Xmb75/kQszt35t6z03bve87nc5QxxiCEEEIIIYTICqXUWA9BCCGEGHessR6AEEIIIYQQQgghhJjcJIASQgghhBBCCCGEECNKAighhBBCCCGEEEIIMaIkgBJCCCGEEEIIIYQQI0oCKCGEEEIIIYQ... | 0 |
science | grade-3 | read-a-thermometer | false | true | Select the temperature shown by this thermometer. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAGQCAYAAADbbRRJAAC4DUlEQVR4nOydd3gU1frHv1uS3SSbTaekUJJQEpAuCSq9KupVQATBgg1RERDR+/NaARVBL8WKBVBRQIpeu2ADFRIUpSVBWgLZFELqbpLtu78/wgyzu7Mt2Z738zx5TvbsmdkzC5n5znfe874Cs9lsBkEQBEEQBEEQIYHQ3xMgCIIgCIIgCMJzkMAnCIIgCIIgiBCCBD5BEARBEARBhBAk8AmCIAiCIAgihCCBTxAEQRAEQRAhBAl8giAIgiAIggghSOATBEEQBEEQRAg... | [
"20°C",
"0°C",
"5°C"
] | null | 0 |
math | grade-8 | identify-linear-and-nonlinear-functions-tables | false | true | The table shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAFYAAABeCAYAAAC5BeOaAAAJkElEQVR4nO2cfUiT3RvHv23NpS6zxFpFNS1fYmZMyhU2K/dQZliZ/rIFmlGUWvSCMHq1jLJSyWlhiWWuNMISjHieshdNrJAywl4VhFUW0SwJ33K67fz+EAdDs23dx+fnj/OB/XOds/O9+Hp77qP3dV8o/buCjARGSp6E9OXKA4MKzFhKMGMpwYylBDOWEsxYSjBjKTEsxnZ3d0OhUGDBggXDIWcTDQ0NUCqVCAwMHHS8pqYGq1atgr+/P4KDg5GRkQGj0Wjz+sNirEa... | [
"linear",
"nonlinear"
] | null | 0 |
math | grade-1 | flip-turn-and-slide | false | true | What has been done to this letter? | "iVBORw0KGgoAAAANSUhEUgAAAPoAAABkCAYAAACvgC0OAAANGElEQVR4nO2dfVBVdR7Gn3MvXuRVQHBFVMJIAy1fCDPXl2ua0mw1gZa2qQNW1MTOhqvurlojWlib1eaOW0opjC9FpUgvrpipQeWQhV4zRRa1WMRMEJGXi1zgnv2DwdF4uefce37n9fuZcbwDv/Oc75x7Hs45v5fncFOnTuWtViukoLCwEDzPg/Tc1zt06JAkWkpjtVpVfZyNpudltVqRkZEhieDq1avB8zzpeaCnF+i8UpeeSRIlgiBUDRmdIAwAGZ0gDAAZnSAMABm... | [
"turn",
"slide",
"flip"
] | null | 1 |
math | grade-1 | purchases-do-you-have-enough-money | false | true |
A can of tuna fish costs 46 cents. Do you have enough money to buy it? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAB3CAYAAAB2WzTHAABuKUlEQVR4nO3dd5xU1f34/9edPrMzszvbe4MtdKSKCghSFFAUBbEr9hqTqDGxJyamGc33k6Ixv0SNktjBhqCoICq9d9hlK9vbzJap9/z+mJ1hl92FXYoInufjsQ9l5t479565c+d9z5zzfitCCIEkSZIkSZIkSWcEzaneAUmSJEmSJEmSThwZ4EuSJEmSJEnSGeSEB/iNPkHWUidnfe6i0SdH/0iSJEmSJEnSd6lPAf6iCh9P7XYfMXD/stZPUavK5qYAN21oPe4dlCR... | [
"yes",
"no"
] | null | 1 |
math | grade-2 | cubes | true | false | Which shape is a cube? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJ8AAACfCAYAAADnGwvgAAAW90lEQVR4nO2dW3ATV5rH/7YuLbmFdTFIwpYRwYubrSF4puwBs1WBgQRSlcTsPoR9CAPzNEtedquGmrxthSK1b5vamaq8QFVehktewsOMCdmqLIHBVA2Ox8yMMVNDm4FYIBy1QJe2denWxd6HdjeSLQdL3ZJa0vlVUVitVveRzr+/73zfubUtLS0thTLA31PAQh7ILYFAqArGNmCDAdjeAXjMQFtIXFqamK93sQitxp5OwPggJb3YbAYYWlImgVANFvIAmwS+ywA... | 2 |
science | grade-7 | use-scientific-names-to-classify-organisms | true | true | This organism is a copperband butterflyfish. Its scientific name is Chelmon rostratus. Select the organism in the same species as the copperband butterflyfish. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOzdd7wnVX34/9c5Uz/t9nt3926DhWVZWOlNEKKxASKCIgrYIBpELNHYUwwxdoNGRKIYgjUoqDGaoGhQadIW3F06y/a9e/vnfsp8pp3y++OG+2OpC2zU8J3n43Efj/v5fKacOXPmzHvOnDkjrLVWKYUxhkKhUCgUCoVCofB/k5QS13UReZ7bIrgvFAqFQqFQKBT+75NSIovgvlAoFAqFQqFQeG4wxiD/0IkoFAqFQqFQKBQKu08R4BcKhUKhUCgUCs8hRYB... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6IAAADMCAYAAABp7h4wAAEAAElEQVR4nOz9ebgtV13gjX/WVFV7POOd701C5kAgEEMz09CAooQwGFFAGbsFhG5aRJDudsgPRWxoVMZXQQRpFAThRWwVpJkMU0KCzAmETHe+555pDzWs8fdH3dwm8w2kAXn353nO85zau2rVqrVWrb2+6zuJlFLy3hNjZMaMGTNmzJgxY8aMGf86kVKitUYI8cOuyowZd4qcCaEzZsyYMWPGjBkzZvzrJ8aI9/6HXY0ZM04IPRNCZ8yYMWPGjBkzZsz48SDGyOW... | 0 |
math | grade-8 | transversals-of-parallel-lines-name-angle-pairs | false | true | \line{LN} and \line{OQ} are parallel lines. Which angles are vertical angles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADSCAYAAABw17dKAAAXnUlEQVR4nO3df2zUd+HH8dfnKNeRDXuFLXYFxo/C6BilR3sdY85dL26JiTEcxMzxh/TQLLoM7Y1IZEYE54I6l+2QTI3T5XOJumzG3E3/Uv9ocQbm7KdcOSxsuuYQdCxCr8CAUVj7/cNvG7r2aKGfu8/n7p6P5P7ovdvP+w3lkz775vO5M4aHh4cFAAAAwBYepxcAAAAAlBICGwAAALARgQ0AAADYiMAGAAAAbJSXwI7FYnrttdfycegJ9fX1yTAMdXR0jHneNE3dfPP... | [
"\\angle{QPR} and \\angle{OPM}",
"\\angle{QPR} and \\angle{QPM}",
"\\angle{QPR} and \\angle{NMP}",
"\\angle{QPR} and \\angle{NMK}"
] | null | 0 |
math | pre-k | fewer-more-and-same | false | true | Are there more beach chairs than beach towels? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEECAYAAAASx0PMAACFF0lEQVR4nOz9d5xc13mYjz/3Tu+zs733hgUWjSRYRZFqlCzJsiwX2ZItl/hnx07s2LHjxCV2EieOHSexLdv5uknuKhQlq5CSRbEXgACJDizKLra32Z3eyz2/P2axwGIXiwWwJHcW76OPPuTcuffcM/fhe/ace5qmlFIIgiAIgiAIgrAp6G93BgRBEARBEARhOyEVbEEQBEEQBEHYRKSCLQiCIAiCIAibiFSwBUEQBEEQBGETkQq2IAiCIAiCIGwiUsEWBEEQBEEQhE1... | [
"no",
"yes"
] | null | 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 shapes. | "iVBORw0KGgoAAAANSUhEUgAAAhAAAACBCAYAAACRpYNGAAAO90lEQVR4nO3de2yU9Z7H8c/MtOWhLdsL5VZELLZc7AmsQeRyWBdaQTReiGsRzZrNRlmiaBSjAgENrGLAIHIJwXg4ssVawiGWsAo5RkRs4HARBUwNtwLdQjvSUGiRbUfamdk/SrvpgdD+2pl5+kzfr6QJMzzzPL/nl9/3m89cnhlXMBgMCgAAwIDb7gEAAADnIUBEyPTp0+VyuVr99enTR7m5uSouLjbaV0lJiVwul/bu3Ws8Dr/fr0WLFsntdmvVqlXGjwcQel2hP/j... | [
"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 | 2 |
math | precalculus | identify-graphs-of-continuous-functions | false | true | Is the function f(x) continuous? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AABo8UlEQVR4nO3deXQU9502+qf3bu1CEpIskDDGYAtLrAIEyOCBxMQ4jsFDsBNvSWbuO3mzzpmZk0xObu6ZhMmbO5kkbyZOxpM32Nhx7iR2YjsxWGAwAsmS2QQIJDYhQCtaWmq1eq+urrp/tCUjDKYFv5+6JZ7POXMmalU/+rrprn6qurrKoOu6DiIiIiIiEsIY7wGIiIiIiCYTFmwiIiIiIoFYsImIiIiIBGLBJrqN7N27FzNmzMD69evjPQoREdGkZeCXHIluH2vXrsV... | [
"no",
"yes"
] | null | 0 |
math | pre-k | circles-squares-and-triangles | true | false | Which shape is a triangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACTCAYAAAB28ADfAAAHE0lEQVR4nO3d32sUVxQH8O/szJjVzP6YfUhdUBrQtkSSEqMhxhQUheqDgqJI/8T+HaVPvvfB2vemLy0YDRgTpg+rEEJi9s6999x77nw/T0qY2ZvdL5vdO+fMyZqmaXYPgL/2gb0j4LABkbUiAwY58N0l4JsLQLb7sWlevwu9LErZ1hAo3u7P/jO9APywOEshka29I+DNB+DvA+DPfaD37nD2A4aMXBrks0wBwPsjoHd07AdELn3J1KcG6IVdCnUFg0YiGDQSwaC... | 0 |
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