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-4 | compare-area-and-perimeter-of-two-figures | true | false | Which figure has a greater perimeter? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHUAAACXCAYAAAAriBQ1AAAQlUlEQVR4nO2dfVQU97nHv8vusrrNxhJQ4YigqVRD2ly8tqHRShOBKgpsfbcavL60ulAji+AbaqKiIrJi4CiwlsT6Tg2+iyaathFrc4nJvZAeWVM3EvB40IuIOnZxWJa5f6xMeFP3Bzv7Mvv7nMPxLMyz++DnzLLPzG++I+E4jrvdDBhNAGMBWjhQ3AyZBFBJgRAlMNAbkNxmOe6Lh85ui2Ivwl8EZNdN1gcB3sDwH1iNU9wLxgJ882+grhn4lwnwethi/QEV6r6... | 1 |
science | grade-3 | predict-temperature-changes | true | true | Two identical blocks are heated to different temperatures. The blocks are placed so that they touch each other. Heat can flow from one block to another but cannot escape from the blocks. Later, the temperature of each block is measured again. Which pair of temperatures is possible? | "iVBORw0KGgoAAAANSUhEUgAAAQQAAACgCAYAAADq8hJGAAAY3klEQVR4nO3daXAk533f8W/3zPRMz4UZnAtggT3IXS5FUlqJFENKXB1UKFERLdpyGEauqFJRJWVXpVJJ5dALU0mlEsUuJ+WU7VTFccWO5ENXZMqiFIoiRYk0KR7iyjLXokgv98I5ABbA3Pd095MXDTQWCywwu4tFD4D/p4pFctAzaMzT8+t+/s8z/WhKKYUQQgC63zsghOgcEghCCI8EghDCI4EghPBIIAghPBIIQgiPBIIQwiOBIITwSCAIITwSCEIIjwSCEMIjgSC... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAiAAAAC4CAYAAADaI1cbAAAj6klEQVR4nO3deZAkV50f8G9m1n11VXf1fUzPaKY1mhFISEJIIHFICIQBiWUNWtYmHGA7lo0NbIfNsuEVazts2I1dxzqWtcPrjVgM7C6XhQBpACGQQEiABo1gpUUHo7n6vrvuyroy8/mPrKo+qo+aUXVmVvX3EzExUnV195t6r7/9y8xfvpIACBARARBCYLEMnFeBrA5oTAciahGXBIQV4FgA6PcAEliAEFHVYkngmYzdoyCiTveGCOCyexBE5BznVPPvQQ9wddA... | 1 |
science | grade-2 | classify-rocks-and-minerals-by-color-and-shape | true | false | Select the light gray rock. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAACS4ElEQVR4nO39WZAk6XkdiB53D/fY98h9qaW7q7q7uoEGGhtFLCRlImgGcTW+SJrRAyW9UWZ6m+E8UGN6kulJ0tg14wNnRM2VdHV5ZeIFxUuQAtgACIBogL13V3UtWVWZlWvsu0e4hy/3weN88UdU9iJWVVc1UL9ZWmVlZmzu/7edc77v18IwDPF4PV6P16lLf9hv4PF6vB7l9dhAHq/H633WYwN5vB6v91mPDeTxerzeZz02kMfr8Xqf9dhAHq/H633WYwN5vB6... | 1 |
math | grade-2 | choose-the-appropriate-measuring-tool | true | false |
Which tool would help you use the right amount of vinegar in a sauce? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJYAAACoCAYAAAACcRc/AAAUe0lEQVR4nO2da0xb5/3Hv75gO8EGUyi3cs0F/7esMVsTAluXhGqNW1WNO3UlW14wpVvVTKq0vdgLJqXdu6qbJk2qJq0vpipqtaXptlYl2dpMNFOihoiEtibgLiaBcEnAlJttbHOz/fu/MOfYB5trOMcm/D4SsnzOc+znwIff+T3Pec7zqIiI3HPA7SAwFQZCBIZZM1oVYNIAu7cDBTpA5Z4luuZLdbWYB4kDWYD2VjD6pkgHWDKj1jHMWpkKA64AMDwHdAcBtS8... | 0 |
math | grade-7 | make-predictions-with-scatter-plots | false | true | Based on the scatter plot below, which is a better prediction for y when x = 7? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFhCAYAAABK/t0lAAAfc0lEQVR4nO3dfXCV5Z038F8EIkrkJbF6DqjR0SoEUUJ25YRu2fWtjlamatuBnVKtVZR17LbuPu32j27F/rGujoUts93toBbtzs5gbcu4jqLu1rrt001wGgGFoEVbHJCTOia8GBRS8Dx/+JhuJElDzn3OnRM+nxlnOOci5/cFZsyXi+u+76pCoVAIAAAgEcelHQAAAEYTBRsAABKkYAMAQIIUbAAASJCCDQAACVKwAQAgQQo2AAAkqGwF+8CBA3HgwIFyjQMAgFSUrWB... | [
"7",
"0"
] | null | 0 |
math | kindergarten | addition-sentences-up-to-10-which-model-matches | true | false | Which shows 6+1=7? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAXYAAABKCAYAAACvkX8HAAAM9ElEQVR4nO3dW2wc133H8e85c9kbbxJlh5Ji2bAsubLr1m5Ry3aSNyNp2iRAEMQNgsDoU4EiCQKjaN/60ocWSB/atAX63D60aYqgaJy6fU6b2hFaIEDiGqJVBdGFoi6USe6NOztzTh6GlLjiitxZ7pmdXf8/gCCSu3tmfnuI/wzPmT2jrLV2NYJLLagnEFuEEEJMEF/BrAdnqvCRENRqx9oLm+PeLSGEEKNwfg7891vpN8dDeLqWVn0hhBCTo57AxSbciGC5BXo... | 0 |
math | grade-2 | compare-sides-and-vertices | true | false | Which shape has more sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAALgAAAC4CAYAAABQMybHAAALPklEQVR4nO2d229U1xXGvzMzx3c7Bht7XBABCr6RilRqEvWhlZpUvaRV1apv/DO9KFIeUomnvLQP7Uv7UBKUKoSkQZSgEqFwiyHB+AYYZONbjI1nPMPMnJnTh+NxTS8Y4zl7r73393tDlu2N/dP2d9ZeZ20vDMNwtghM5IBMGQhCEGIsKQ9oTQKHmoDuOsCbLYThxRXdyyKk9rzSBqTGc9E/euqAvubIfkJMJVMGRleBmSIwlgMSK0H0AcpNbKA1GbkMANkykCh... | 0 |
technology | grade | font | false | true | Identify this font type | "iVBORw0KGgoAAAANSUhEUgAAAPoAAABQCAYAAAAwa2i1AAAI4klEQVR4nO2dvW7bPBSGmaBXESDwFkC24psIInnonr1DJ1tAG/sqZHcwPHXw3r2DpaA3Yckw0K0okMswv6GQP0Xm4Y9EOVH4PoCG0DbFQ52X5KFI5oJzzhkA4F1z+doFAAC0D4QOgANA6AA4AIQOgANA6AA4AIQOgANA6AA4AIQOgANA6AA4AIQOgANA6AA4AIQOgANA6AA4AIQOgANA6AA4AIQOgANA6AA4AIQOgANA6AA4AIQOgANA6AA4AIQOgANA6AA4AIQOgAN... | [
"Trebuchet MS",
"Copperplate Gothic Bold",
"Eraser Dust",
"Wide Latin"
] | null | 1 |
math | pre-k | tally-marks-up-to-10 | false | true | Count the tally marks. What number is shown? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABBCAYAAAAngwHRAAADjUlEQVR4nO2dMW8TQRCFnxGSXWAlXQwUTmWnS2FQOmT4AXEXmigVBS1/IAVQUUGFhKBB0NCFkiJBVIgkEmVMFRcxcWfrKOzKFJYFp7N3dnzj23E8X+k7v9vLu50ZrW8nueFwOIShhmuhB2DEcRvSOgZaJ3JXWza9Gbie+KQfAV9eAGdHwCD69/nmNnDvMbB6m3eFfgR8ew38/Cyn9+Mj8P2DTr2U5GI5pHkIHOzHB/Y/+SKw9xYobfipX54B7x/J6XUvgDcP3XqNp0D... | [
"1",
"7",
"4",
"5"
] | null | 2 |
science | grade-4 | predict-heat-flow | true | false | Two solid blocks are heated to the temperatures shown. The blocks are placed so they touch. Which diagram shows the direction heat will flow? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAZ5UlEQVR4nO3deUBVdd7H8ffdgSsgiCwqhCaImHsumZq2PWY6OU1mM9U8TfU0WU9Py1TTlNU8ZmXbUzY1M+01lTNptpppVkYpuCIoIKAoi7LIvlzgruf54+JVhBzUy7kX+L7+Cc49nPs7cf1wzuee3z0aRVGUchscaIZGJzgUhBDCK/QaCNZBQhBEGUFTblWU7Q2+HpYQorebEgL6/c3ub2KMMMLsTiMhhPCGRifkWaDMBvnNoG1wuB+QsBFCeFuwzp0tAE1O0Dp... | 2 |
math | grade-5 | angles-of-90-180-270-and-360-degrees | false | true | What is the measurement of this angle? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABsCAYAAABQF8VPAAAM1ElEQVR4nO3db1SU553G8WvkbwZFLBLZbEc0S0/oQbrBdclG3I1WTRoTG7VtiGklCQomINDd2tDGpFZrk5iQRBBIFv+nTdCmVROjtqZUcxaSo5uFF8g5ZMOJ/GmzKHpAlFFAnH3BDjWLMU1luOd55vt5NYPP8b5eXud3fnM/Do/H4xEAAACAYTHKdAAAAADATgYLds2BozrdcspkFgAAAMDygr0fWuqatDH9OYWEBss1ZbK+NmeqJk6ZpFtSE+UcG2EyIwAAAGAZjit... | [
"270°",
"180°",
"360°",
"90°"
] | null | 3 |
technology | grade | peripherals | false | true | What kind of computer peripheral do you see here? | "iVBORw0KGgoAAAANSUhEUgAAAV4AAAD8CAYAAAA/iMxLAAEAAElEQVR4nOz9W69tSZYmCH1jmM0511p7n4sfv8Qtr1FZWV1FUwWdXaSSalWroWiBQCCQEA0SF4lHnvuhETwg+AVISM0P6B+AhBBSUSCkpkV3FZVdl7xV3iryEhkR7uHHzzl777XWnGZj8DCG2bQ519p77ePH3cOjMsy1fe+z1rzYtGk27BvfuNF/669eKQAQEYgIzFz/Lp+Xdu6zTjF/z7r6XtA2ovX3gBI/+H17TSKc9C/Ph57tHzM/+D1IHvz+0vmq+eHrN+3S95+... | [
"Tablet",
"Webcam",
"Dongle",
"Modem"
] | null | 3 |
math | algebra-1 | identify-linear-and-exponential-functions-from-tables | false | true | Is this function linear or exponential? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEqCAYAAAAvYSeKAAATpUlEQVR4nO3db4zW5b3n8Q/DwGgL0vUPFuuMBTSiHqfSaG068c85InY1dqMsyGghVMF0u9rzoNG6RtzWLBtTJlsgq1g91KWKEo3/HuystT6QumukrKdS3QLHLginHrJglcOA/2BgH7hlw9oc3fId75mb1yvxwfzueF1fnr1z5bp/97CRP393f4aA1y44Iqeseq/RY3wi7089otEjAADQIC2NHgAAAJqJwAYAgEICGwAACglsAAAoJLABAKCQwAYAgEICGwAACglsAAA... | [
"exponential",
"linear"
] | null | 1 |
math | grade-5 | understanding-probability | false | true | If you select a marble without looking, which color are you more likely to pick? | "iVBORw0KGgoAAAANSUhEUgAAAOoAAACcCAYAAABx7zeSAABQw0lEQVR4nO29eXwc1Znv/T3VrW7tmy0vkm3Zsh0v2GBjTFiCGCDYEJIBQwImgWSGd14gvvlMJnDzXjIJWebaBHJnAjPcm2VuJpksBDLANc7NBEICAzYMXjDYIGwDXrElWdYu9d5V57x/nFPV1VpsyZYsy/Tv84Fytaq7q6vqd579eYRSSpFDDjmc0bDG+gRyyCGHEyM41ieQQw5nKhqjrezqPEhLvJPmaDtH4x10p6JMKihnckEFUwsnMKVwAosr66gIl4zquYic6pt... | [
"green",
"black"
] | null | 0 |
math | kindergarten | count-money-pennies-and-nickels | false | true | How much money is there? | "iVBORw0KGgoAAAANSUhEUgAAAQYAAABECAYAAABj0pvvAABp10lEQVR4nO39d5hdZ3nvjX9W3b3N7Om9z6j3LtmSq9zB2LQAh17CC3mBc0gOSUhCyrlySOBwSEhMOWCKwQYb9yLZltV7L1M0vdc9u5fVfn9s7YUMNki2CTnvT9/r0qWRNJq9nrWedT93+d7fW7Asy+IaruEaruEyiH/oC7iGa7iG/3y4Zhiu4Rqu4TdwzTBcwzVcw2/gmmG4hmu4ht+A/Ie+gP9/gWmaGIaBYRhks1nm5+cxTZNUKkUymSQej+NyuQiHw/j9fiRJwuF... | [
"11¢",
"13¢",
"12¢"
] | null | 2 |
math | kindergarten | count-money-pennies-and-nickels | false | true | How much money is there? | "iVBORw0KGgoAAAANSUhEUgAAAQsAAABECAYAAACWLBBfAAA6T0lEQVR4nO29d3Rc93nn/blz751eAQx6LyQKSbB3Up3qZmTJ8saOnXUcx8l5c5K8cd6U4/ck2TfJnj3J7jrH7+v1rvc4TuTYcklEdVkSJfZeQLGikACIjgEwmD5z+/sHONeko9ikJdlxNN9zcAgMgbn3+c4zzzy/pwqWZVmUUEIJJfwEOH7eN1BCCSX8YqBkLEoooYTbQslYlFBCCbeFkrEooYQSbgvSz+pChmGQSqXIZrOkUilSqRS5XA7DMJienmZxcZFgMIiu66x... | [
"14¢",
"16¢",
"11¢"
] | null | 1 |
math | kindergarten | compare-sides-and-corners | true | false | Which shape has more sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAALgAAAC4CAYAAABQMybHAAAJmElEQVR4nO3dzW9U1wHG4fd+zFga25gx2MTeWm13QWxgAxsisagilEXohixoWlXtX9SqalMWsIEsIpQVUtjAJt4gsktTb23wYBs89kieufeeLs4MuK7HM/fjfNxz3meVCBOf4N8cWfj6dSCEEK/7wH96QDcFEgGi2ooDYD4CftUCLjWB4PWREOv7po9FVL1r54D4l578l5Um8JtZWT9RXXVT4OdDYKsP/LsHhPuJ/AXGTS6Yj2TLAHCQAmF67BeIXDBqeSCA0Ox... | 0 |
math | grade-6 | compare-area-and-perimeter-of-two-figures | true | false | Which figure has a greater area? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKsAAACgCAYAAABzL5zaAAAGlUlEQVR4nO3bT0jU+R/H8ddXLcWf+9uatJ+DkUm0UiBNaVhKZKakBy+hINLBW4dE0kt4LPPSYYUOkgPlIaZTXaxAKgrqtjCJFpRrBOFh+zMWo7vV5th3D9NKYm2bo319f3/PB3wZv3w/8+X9xScf5jDjuK7rPnsvPX4jTc9KCVfAipDhSD+kS1uypf+tlpxnf7ruL1NejwX8s/L/Shnjb5InwdVS8X+SJQMrwfSsNPaH9Nt76dc3UtpUInmBULHS/JCe7FKSfp+... | 1 |
math | grade-2 | place-value-tens-and-ones | false | true | What is the value of the underlined digit? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAAiCAYAAABlRa5TAAADwUlEQVR4nO3dTyhsfRzH8c+Mm2bIlKnbLKRJUhIWZDZkhJKFspaNzWRFlFJmoaQ0SVmQLGxNUhYsJkpKY6WwwEpmFsOCScjC3/Msbs/pzjPjus/tTHfc+37VqfM953t+811+Ok2/YzMMwxAAAAAAS9h/9wAAAADAn4SADQAAAFiIgA0AAABYiIANAAAAWIiADQAAAFiIgA0AAABYiIANAAAAWIiADQAAAFjIDNiJRELBYFA1NTVyuVzyeDxqbW1VKBTS8/PzTy84Nzc... | [
"4",
"40"
] | null | 0 |
science | grade-4 | animal-adaptations-skins-and-body-coverings | true | true | Musk oxen live in the Canadian Arctic and Greenland. The musk ox's skin is adapted to help the animal survive in cold places. Which animal's skin is also adapted for survival in cold places? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOz9d4BcVf34/z+n9z47OzPba7ItZdN7gRBCIAQIXUFBURGlWFA+NsSCYnkLggKCdClSAwESQnrPpu5utvc2Zaf3+vsjX/IhEjBggPfH3zz+2r1z7rl3zr137mvOfZ0zgmw2m02lUmQyGXJycnJycnJycnJy/t8kFAoRi8UIkslkNhfc5+Tk5OTk5OTk5Py/TygUIswF9zk5OTk5OTk5OTn/HTKZDMLPeydycnJycnJycnJycs6cXICfk5OTk5OTk5OT818... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOzdd4AkVb3w/W91zml6emZ6cs6zO5tzgoVdwpKzBNGLiqiYMF6vmK6KgJIUUAQUJGeWXRY2592ZTZNznuk0nXOo94+97CNXVK6iPs99+/NXd/WpU6dP1anuX5/QgiiKYiqVIpPJkJWVlZWVlZWVlZX1/yaJRIJMJkMQhH91UbKy/leSZAPnrKysrKysrKysrP/3ZTIZUqnUv7oYWVn/a0mygXNWVlZWVlZWVlbW/w7Z7/ZZWf84kn91AbKysrKysrK... | 1 |
math | grade-3 | match-fractions-to-models-halves-thirds-and-fourths | true | false | Look at the colored part of each shape. Which shape shows one-fourth? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAARHUlEQVR4nO2de3Bb1Z2APz38tpTYlmPHlp2HEyuxnZchD8dJSiGdli7Q7VKWzj66lClLmWlKgYZHt6WwtJ3dLpBloKGFLFAKu2Uhw6QdmF0a2u4UOyEEpzaWEz9i7NixLVuyZL0syZLu/nEtWU78lPW07vePJ7ry9XE+n9855/c750omCIIw5IEuJ9h84BWQWEYoZaBSwMZsKEoH2ZBbEM5Y490siViwWw3KTqf4j9XpoMsR/xoklg82H7Q7YNADHU6QW73iBUn... | 1 |
math | grade-6 | identify-complementary-supplementary-vertical-adjacent-and-congruent-angles | false | true | Which angle is vertical to \angle{6}? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADFCAYAAABuBIVpAAAywklEQVR4nO3da1TV14H//zcIgYZQrDijMjFcsmhMGCJOxLYzEk7KSBarBHEcOyUq8RINqFS8RQS8UFGhCiFFhXgLUZSZEAdimKE5WTYHSWc1QhoMYaJDi1ANmrXEQinpQeDwe5C//JubETzwFfi8HsVz2ftznn3Y2d+9HXp7e3sRERERERG7cBzKyWpqakhLS6O1tXUopxURERERGTIOQ72CPXbsWGw2G1FRUaSnp+Pj4zOU04uIiIiIDKohXcEG+Jd/+Rfa29s5fvw... | [
"\\angle{4}",
"\\angle{3}",
"\\angle{5}",
"\\angle{1}"
] | null | 1 |
science | grade-3 | natural-resources | true | false | Which of these pictures shows a natural resource? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAV4AAAElCAYAAACszooYAAEAAElEQVR4nOz9WbBl15nfif3WtPc+852HvDczbw5IIAGCAGcWq1yDpFYppCqpZFttWWFb0XJHOFoRth8c4df2o178ZIfDLw53R6std7i7HVZJVlWRLLKKIwgSIEAgAWQi5+nO98xnD2vww9rnZiaYIFka/MSFOMh75rPX8K1v/b//9//Em4MQXmxBR/Hr9uv26/br9uv277GNHHw0gcclLGr4rYX4uPy10f11+3X7dft1+w/TOgpebMW/x+7J4/LXRvfX7dft1+3... | 1 |
math | grade-2 | compare-sides-and-vertices | true | false | Which shape has more vertices? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAALgAAAC4CAYAAABQMybHAAAGIklEQVR4nO3dzWsUdwDG8WfjS4uvaK0vtZHUolZqEhWqFHooPbRFfGlL/xStCN49ePDixYsXL0KNiiCVtFZbRdFalNraxqSxIFSNopjEaEw208P0p2FVjElmfzPPfj8wkGVh5jl8WRZ2J1tKkiS5+Vjq6JN6ytJgIqCwJpak6ROkJVOkeZOl0s3+JDnfHXsWMP7WzpAmtvelDxZMlpZNTesHiqqnLLU9kG48lq72SXXdg+kTxA0H0yekLUtSb1mqKw97AnAQWh5... | 1 |
math | grade-1 | select-two-dimensional-shapes | true | false | Which shape is a rectangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAACjklEQVR4nO3VP24VVxyG4d+9/qOIQNLFSvqQJbAK9sJSspfsgh0AqYlpbbCC46tJMUJyaux30M3zVHN0mq94NWe3LMtyeTvz583M9WHmbhn4aqe7mWcnM78+mbk4n9ldfl6W11dbz+KYvfhh5vTdzXr4+Xzmt+/XCuFrXR9m3nya+et25u3NzP7qbr0QGQ/p2cna1MzMx8PM/nDvAh7Sl6b+WWb2207h/0JoJIRGQmgkhEZCaCSERkJoJIRGQmgkhEZCaCROtx5... | 0 |
math | grade-3 | open-and-closed-shapes | false | true | Is this shape open or closed? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAALHUlEQVR4nO3dPUybWRrF8TOjrfh0kyCFIg4NQWIEWxDSQXDaAbNVEmkwaDMVSHi6xSliiiHl2LtQzaxiiBRSrQ1pMeN04BTrEUhmGuMUjgQp1jFxWqYwrxeYfACxfe3X/18VIT4eUp3cnPvcrw4PDw8FAAAAoCS+Nj0AAAAAYCd/MT3AWSxGIwpFw4ptx9V77bocjS0a/OaGHI3N6u3o0tVLV+Rsazc9JgAAAKCvqrUiks3ntLKxLv/yvNL7mTN9DeEbAAAAplVdwM7... | [
"open",
"closed"
] | null | 0 |
math | grade-5 | regular-and-irregular-polygons | false | true | Is this shape a regular polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD6CAYAAACbKDARAAAe+klEQVR4nO3deYykhZnf8d/7vnWf3VU9PQcLO2BuZsDH2gQfxPgAL3gG7HW0ku3YUaQcsARHirKKEkVJFG0k79pSQuw4m5Wy3o2062U3tplh8BhiHGKw195dWKAHBmwYzDD3VFV33df7vvmjjukeBujqrqq33qrv55+WqlHzzHS3+jdPP+/zGK7rugIAAAAwFKbXBQAAAADThIANAAAADBEBGwAAABgiAjYAAAAwRARsAAAAYIgI2AAAAMAQEbABAACAISJgAwAAAEM... | [
"no",
"yes"
] | null | 1 |
math | precalculus | determine-continuity-on-an-interval-using-graphs | false | true | Is the function f(x) continuous on the open interval ( – 8,4)? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAACBjElEQVR4nO3deXxU9b0//tfskz0hgSQEE0A2gbCKrBEoVEXUCmpBb221tL221Wq/d2ut3/5ue631ftveVqu2tdeK9rZVuSpWICDKFoNsAQIJWwiQhTBJhmyzn3PmnN8fw8SENRPOJzOTvJ6PBw/NZM573jln5pz3+cxnMWiapoGIiIiIiHRhjHYCRERERET9CQtsIiIiIiIdscAmIiIiItIRC2wi6mbLli0YPnw4li5dCgC4++678f7771/2ubIsY9asWdi1a1dfpkh... | [
"yes",
"no"
] | null | 1 |
engineer | grade-6 | identify-laboratory-tools | true | false | Select the round-bottom flask. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AABhNUlEQVR4nO2dd5ykVZX3f+feJ1XuMD05wQxpiKIsKoiwuKsiAo4wZMRVcA3Lou7u6yq4KGFXYUFXVwXTqiAwMIjADphIgmlBMgLDBIZhUufuCk+49573j6rqro7TcaZqur6fz0xXPc9TT92nnnuec+65554D1KlTp06dOnXq1KlTp06dOnXq1KlTp06dOnXq1KlTp06dOnXq1KlTp06dOnXq1KlTp06dOtUF7ekGzHRuueWWRtu2G4yx0sw6DSnSZEwKQqQNI0V... | 1 |
math | precalculus | determine-continuity-using-graphs | false | true | Is f(x) continuous at x=3? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAACBzElEQVR4nO3de3xU5Z0/8M+ZM5fcMyEJSbgkgFwEJCgKCoJosWq9FqzFdq1t17qrW2vbrf21a1u37aq1dW3Xa2tvXtrudsvWSxEjoiBgECIBAgkIIUAuhFwmmUnmeu6/P2JSIiAJnCcnk3zer5cvyWTOZ745Z+bMd555zjmSZVkWiIiIiIjIFi6nCyAiIiIiGknYYBMRERER2YgNNhERERGRjdhgE1E/69evx6RJk3DdddcBAG644Qa8/PLLJ72vpmm45JJLsHXr1qE... | [
"no",
"yes"
] | null | 0 |
math | pre-k | squares | true | false | Which shape is a square? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAACeUlEQVR4nO3Uv24UVxyG4d+s7S34k3RBuQBA4gYoc++UXEAkQnqc1gZLOF5NihFSarN6Fy3PU83o6Ehf8eos67qu1/czf9/N3B5mHtaB73a5zDy/mHn5ZObFfma5/rqu729OPYtz9vaXmcuPd9vP7/uZ10+3CuF73R5mPnyZ+XQ/89fdzO7mYTsQGcf0/GJrambm82Fmd/jfARzTt6b+XWd2p53Cz0JoJIRGQmgkhEZCaCSERkJoJIRGQmgkLh9/dZ37P/843hJ... | 0 |
science | grade-7 | compare-magnitudes-of-magnetic-forces | false | true | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | "iVBORw0KGgoAAAANSUhEUgAAAkwAAACtCAYAAABC4yDNAAATrElEQVR4nO3de3SU9Z3H8c9MwiQpNyNMICFSCJMUCWxRUVekCJSCgYg4RMCFVSly8QIFpJTtoou1lMKyAirI7QChHFBYMCpSsMtdOWshSrgEcCOSColyCeEmgckk+webWdNAfkmczEwe3q9zOIeZeeb3fH+c73zPZ54JGVtpaWmpAAAAcFP2YBcAAAAQ6ghMddi+fftks9nK/XE4HGrbtq0mT56sS5cuVWu9tLQ09ezZs0a1HDhwQG3bttVtt91Wo+cDsIZQmUvZ2dn... | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | null | 2 |
math | calculus | domain-and-range | false | true | What is the domain of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABgn0lEQVR4nO3de3QU953n/U+ru3UXSEggybIljDHYYMTFxjYY2TA4vpE4gUwGJ5uLs57NOBsnmZxnsyc7TyY7k+Px5pmZZDYeJ5v1rid29sw5GXtje8ZgQXCMDREBjAwCCYxlGQQCdGl063t1d9XzB5GCuBi1XT9ajd6vfzhqqT58VdVd/elSdbXHcRxHAAAAAFyRk+kBAAAAgCsJBRsAAABwEQUbAAAAcBEFG8AYNTU12rFjx+jXR44c0fTp09XZ2ZnBqQAAyB4UbAB... | [
"$\\{x \\mid x \\geq 1\\}$",
"$\\{x \\mid x \\geq 2\\}$",
"$\\{x \\mid x \\leq 2\\}$",
"$\\{x \\mid x \\leq 1\\}$"
] | null | 1 |
math | grade-2 | estimate-to-the-nearest-ten | false | true | How many marbles are there? Estimate. | "iVBORw0KGgoAAAANSUhEUgAAAkwAAAGICAYAAACz9b/8AAEAAElEQVR4nOz9e5xdVZnnAX/X2ueculdSlVSRG7lyS4GCYoLTonJpwRvSCijO2KL46enp0XfaVsaGnhkd0R67Z9r3pbvFobvH1ta2G1REFG2BAMpNSEBBQiWQpHKrqpCq1L3OqXPba71/rMve+1TlVpekAufxg7vOqUrVPufsvdbz/J7f7/cIrbWmGtWoRjWqUY1qVKMahw15sk+gGtWoRjWqUY1qVGO+R+pkn0A1qlGNapyqMVbKsX1oLyBoTNexvmXVyT6lalSjGnM... | [
"about 40",
"about 80"
] | null | 1 |
math | grade-3 | is-it-a-polygon | false | true | Is this a polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD/CAYAAADL5aGiAAAap0lEQVR4nO3dUUicd7rH8V9XwYmOTHACJs4EA1lnFrp09qyy1XNRopc18SqFENnszQmRc9Vk05t229BsyU3DmqtFaW5OimVDczWpuXTKwq4WtOfMQmFHG6hktBEykmHUURjJuZh5p5om7ajv+/7fmfl+oLCbtvqw68VvHp//87zy7NmzZwIAAABgi1+YLgAAAACoJQRsAAAAwEYEbAAAAMBGBGwAAADARgRsAAAAwEYEbAAAAMBGBGwAAADARgRsAAAAwEaNpgtwy0Y... | [
"no",
"yes"
] | null | 0 |
math | kindergarten | select-three-dimensional-shapes | true | false | Which shape is a sphere? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAARl0lEQVR4nO2da3AU15XH/z2SRqPRG70tCQmCHolhJUwsDAGDDWsHO8QmtY6pfLGp3VrXPhzbW1tbG3sf2a0K3toqZ21vvmQr5cifErzlBKIgxw4QYR7yijiSS3JACIMkJDSgGSTNSKN5aKb3w2i6e4YZIYnb3be7z+8LrZ6ee88MZ26f1z0tiKIoukLAFT/giwALIgiCOzIFID8DaHACFXZAcAVFscert1gEsXy2FgCZQ/7YH1V2oCk3ptUEwRu+CDA4B0yEgMt... | 2 |
math | grade-5 | acute-obtuse-and-right-triangles | false | true | What kind of triangle is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACFCAYAAABhXI8FAAAZF0lEQVR4nO3de1zUdaL/8ffAgCCIIIJ4WKXsxzmxu7bRRmu0hzxh5Z59sO2PNFpvmOattLQst8wi75a66S9t7aZ2+x1NXMNSV81UXDE0RNChtAIUlZSrykWGYc4fhOWtUGf4wszr+Xj4eOA08/28x/55+/FzMdntdrsAAAAAOISH0QEAAAAAV0LBBgAAAByIgg0AAAA4EAUbAAAAcCAKNgAAAOBAFGwAAADAgSjYAAAAgANRsAEAAAAHomADAAAADkTBBgAAAByIgg0... | [
"obtuse",
"acute",
"right"
] | null | 0 |
math | grade-1 | match-analog-clocks-and-times | false | true | What time does the clock show? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEJCAYAAADhBFPCAABTb0lEQVR4nO3de1yT99k/8E84BVBIUA4iagIeEKwSj3ioHKrWWqvi2m7rYRX3rN2ePe2KW9s9OxXcuu3XtZu49tm6x/YxPa1dVytWbavWGlGxWMVgK4gVCIoigpKAQkI4/P5AUpAc7oSEHPi8Xy9eDbm/952rQF5e9zfX9/qKuru7u0FERERERD7Bz90BEBERERGR8zDBJyIiIiLyIUzwiYiIiIh8CBN8IiIiIiIfwgSfiIiIiMiHBLg7AHI/Y3snjIYOtBs60G7oRLu... | [
"5:00",
"4:30"
] | null | 0 |
math | grade-4 | multiply-fractions-by-whole-numbers-using-models | true | false | Which model represents the product 3×
1
12
? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAaAAAACOCAYAAAB359yrAAAlR0lEQVR4nO2df1QTd7r/3xTtosUNsXtboOc0/Fx36x6IttWzZ4FQvaitxeK2iLfdih5Q6V1tQ1t7ocWurXph13aN1Z7KF6pg2/2KuIqg2xbqkpDs2bPqLsGju1WBJv2eirZbHVeu0N7YfP8YPmMCScgkk8wAz+scDsJkJh/mnY/vmefzzPNEOJ1O56Vvge4bwPWbgMMJgiAIgpCcSRHAtEggdSpw9+1AxKVvnM4T/5J7WARBEMREYu73gUkXbvA/xN0OzLiDdye... | 1 |
math | grade-7 | parts-of-a-circle | false | true | What is G? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADICAYAAACdx5VnAAAo4ElEQVR4nO3dd3hUZd7/8c9MkpkkpJFAQigJEKoISFUJioiIUVFcFhcepVjWtbCiqPzEXdx1m8/uPvaCBRVlURFXXAuwKl0EpIMiLUhJgPRep/3+GJhMpEvgnJm8X9fFxZwzZ2a+M3P++Myd730fi8fj8QgAAABAULAaXQAAAACAhkPABwAAAIIIAR8AAAAIIlaLxaKlS5cec8eAAQOUnJx8zP69e/fKYrHolVde0YwZM2SxWOR0Os95ob/85S911VVXNchzrVy5Urf... | [
"radius",
"chord",
"center"
] | null | 2 |
math | grade-3 | 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 | [
"iVBORw0KGgoAAAANSUhEUgAAAMIAAACkCAYAAADFTPF2AAADDklEQVR4nO3cPXJbVRiA4efKP0XITwfDAoAmqVPiDbAfdgD7YQE4bdqkCaHHlNiJZ2KsuRTXGoPpdTS571NJo+IczdxXX6Vvmud5vrjh92uuttzOks/e8cSTI755xFenTBef5vn15ehrJeO8fMrx++vlzdenfPfFUknyubva8u4jf9zw2zWby9vlgyLImjw5Wp55+LBls/3XB8ma7J75v2c2Y6+SHIZCSBRCgkJIUAgJCiFBISQohASFkKAQEhRCgkJIUAgJCiF... | 0 |
math | grade-1 | interpret-bar-graphs-ii | false | true | Levi went grocery shopping and bought some limes, bananas, oranges, and lemons. He made a bar graph of the fruit he bought: Did he buy more oranges or bananas? | "iVBORw0KGgoAAAANSUhEUgAAAlAAAAFfCAYAAACBXPINAAChM0lEQVR4nOzdd5xfRb3/8dfMKd+yPb0nQIgkSAiGJhIIUSyUi4UrKiqgKIoFsOHP7tV77Yp4ES96IerFjqCgUhQDSAkQSIgQSghJSLIpu9n97u63nDIzvz/OZpMIhGzaLtnP8/HYR77lfM/5nJPN7jszc2aUc84hhBBCCCF2mh7oAoQQQgghXmokQAkhhBBC9JMEKCGEEEKIfpIAJYQQQgjRTxKghBBCCCH6SQKUEEIIIUQ/SYASQgghhOgnCVBCCCGEEP0kAUoIIYQ... | [
" oranges",
" bananas"
] | null | 1 |
math | grade-6 | understanding-percents-strip-models | true | false | Which model shows 30%? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAVAAAABLCAYAAAAmjt81AAACKUlEQVR4nO3XsU5TYRjH4fe0hQFBF6PxAtSdhZ3dxNVb4IK4BVejOxfAwI64i9GJQhOQ5nM4aWKiEvoPeKx5nqU9Oefke6df33attXZ6VfVpVjWdV123AuA3Jl3V1rjq+UbV0/Wq7vSytcOzoccCWC07D6smJ7P+4tl61csHfV0B+NV0XnV8UfX5qurjrGp0dt3fEE+Am22N+1ZWVZ3Pq0bzn24AcLNFK7+3qtGwowCsLgEFCAkoQEhAAUICChASUICQgAKEJsu... | 1 |
science | grade-7 | predict-heat-flow-and-temperature-changes | true | false | Two solid blocks are heated to the temperatures shown. The blocks are placed so they touch. Which diagram shows the direction heat will flow? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAXqElEQVR4nO3d6XMTZ54H8G+3blnyjbENPjAQE4NDwBCo4LC5apLNkEwy2aSSmSSTqd3ZV1P7Yvf17h+w/8HWVG3tbmYzR27IAkkghATMaW5iDMb3IdvyIeuW+tgXbcvIFuAZy90t+fupooC2jkd+ur/q5/f0Iwmqqqq+BNAVAYIyIKkgIsoKqwB4LcBmN7DWDgi+uKqenzG6WUSU7/YUAtY7Ee0/VXagsUBLIyKibAjKQGcYGEkAtyOAOCNpP2DYEFG2eS1atgB... | 0 |
science | grade-3 | compare-strengths-of-magnetic-forces | false | true | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | "iVBORw0KGgoAAAANSUhEUgAAArwAAACtCAYAAABSr6xUAAAovUlEQVR4nO3dd3hUddo+8HtqJskkIQ1CCBAkdJAuRSxERdRV2V0purov9gKuawVXt/zWhl1ALMiKq4iyiF10BQUBXzqJFClJCIT0RhrJJJk58/6ByU8RkpnJOfP9njP357q8lGRmzjNyzv08c9qYvF6vF0REREREBmUWXQARERERkZY48JLUpkyZApPJ9It/EhMTcdFFF2HDhg1+vdbevXthMpmwadMmv+vweDx49NFHYTab8dJLL/n9fCIivZAhdz0eD1544QUMGjQ... | [
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is weaker in Pair 1.",
"The magnetic force is weaker in Pair 2."
] | null | 1 |
math | grade-3 | division-input-output-tables-find-the-rule | false | true | What is the rule for this input/output table? | "iVBORw0KGgoAAAANSUhEUgAAAMkAAABtCAYAAAALS0X9AAAK7klEQVR4nO3df1DUdR7H8ecXWGAlXSHFwOvGU0QEShHFpBE8bwYNI7UMTY+5K7UzUjypueaabC7Lm6aZxh/pcDlTc51ONUt2cgFdjXNJodSlY5yJkJymYPnjEPll7C673/tjhSS1r95yfva7+37M7Ay7fGVew35f+/l+d/m+1ex2u44Q4prCAH5py1OdQ1yyo+09eT78yI629whRHUIIfyclEcKAlEQIA1ISIQxISYQwICURwoCURAgDYaoD3Ih7hoWwa1I4AMP/0U1... | [
"÷ 4",
"÷ 3",
"÷ 5",
"÷ 2"
] | null | 3 |
math | grade-2 | name-the-two-dimensional-shape | false | true | What shape is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADXCAYAAAAgGib5AAAQ1ElEQVR4nO3dP1NjV57H4d9sTbS1L2azfZ3dRTUJk3SPk6bGEVV2Aom9AXhiSCGypGaEUINUSPecs4F6p+yZdvNP0rn36nkyt0H3C7qq+hg3R38qpZQAAADW4j9qDwAAgD4R2AAAsEYCGwAA1khgAwDAGglsAABYI4ENAABrJLABAGCNBDYAAKyRwAYAgDUS2DsiDd7UngAAsBME9g7I0+NI479Fnh7XngIA0HsCu+dKmkUz2I+IiGawHyXNKi8CAOg3gd1z+fp9RDN... | [
"hexagon",
"triangle",
"square"
] | null | 1 |
math | kindergarten | flat-and-solid-shapes | true | false | Which shape is flat? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMwAAADMCAYAAAA/IkzyAAARaklEQVR4nO2dvZMcx3mHfz2zH7cfh8MBuANBq0DLFmAXqYQsVUmJGDlhKmYulxIHZqzY/gOcOXGVypnLEQOFKjBwIqgcWEUBgSmRhEiChCDiCB4PuNvd28+ZdjDTPbNft9sz0z0D8fdUsXDYvTssb/Hg7fftt98WUkp5NAE+OQd6ATCTIITE1ASw6wO32sD1BiCOxlL+5qzsl0VI9fnhJaD2h/PoNzcawN90IpsIIRG9APh4ADyZAA/OAe9sFj1BWQhZZteP3AC... | 1 |
science | grade-6 | identify-rocks-and-minerals | false | true | Styrofoam has the following properties:
solid
no fixed crystal structure
not a pure substance
made in a factory Is styrofoam a mineral? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAABEC0lEQVR4nO2d15LkVna1F9K7smzDZpPspn5pFDG6mlDoJfT+d9LFXEh0wy6fPoH8L7K+kwu7kKjiTFsKO6KiqjKBg2O2Wducg2y73W7VUEMNVVLrU3egoYY+Z2oEpKGGaqgRkIYaqqFGQBpqqIYaAWmooRpqBKShhmqoEZCGGqqhRkAaaqiGGgFpqKEaagSkoYZqqBGQhhqqoUZAGmqohhoBaaihGmoEpKGGaqgRkIYaqqFGQBpqqIYaAWmooRpqBKShhmqoEZCGGqq... | [
"no",
"yes"
] | null | 0 |
math | grade-3 | choose-the-appropriate-measuring-tool | true | false | Which tool would you use to find out how hot a cup of tea is? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJYAAACnCAYAAADzJ6XqAAAb90lEQVR4nO2de3BU9d3/X+ecPbtJNpuE2ybkQiAEhCcooiJQqpWCipc+9UHb/hS17e+h0s7vcaodHaE6/uan0nlaZ0pH51fbGbVqsPWp1aq/OkAfRYUCAnKpFzTcEgIJt4RLdrPZ3XP5/v44uye7Sbizu0n4vmYySzabs99z8uJ9Pvv9fs/3KEIIcTAOuyIQssAUSCRnjUeBgAbjCqDUC8rBmBAbO3LdLMlgYloReHZGnG9GeuESv2OdRHK2hCxo6IQDcdgRAbX... | 0 |
math | pre-k | count-sides | true | false | Which shape has 3 sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAFQUlEQVR4nO3dzW7bRhSG4U+ifto0UpEAaqFACuxF20vIDfnqcim5gzQFbMSG7VZAAkiJW/0wzEIRwIULhcOZMzj2++wMQzIXL0iOjszpVFVV3W6kv+6kVSntKgGt9TrSqJB+eyL9OpA6t+uqerPMfVh4yF6Npd67u/0P04H0x0/7CoG2VqX09rN0s5H+vJO6y93+F0SGmEbFvilJ+lRK3bL2CyCmQ1PbSurmPRQ8FoQGE4QGE4QGE4QGE4QGE4QGE4QGE4QGE4Q... | 2 |
math | pre-k | are-there-enough | false | true | Are there enough daisies for every hummingbird? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEECAYAAAASx0PMAABwdElEQVR4nO39d3gcWX7f+79PdXd17gbQyBkkATCA5JCcQE4gJ+dZ7a60UcHSSl5b1r22fK3r9PvJV2tb17YsybZ8HRWsvStp82yYnbAzO4HkMM0MwwzBAIABIDLQAegc69w/GmwSM+QEDoYkyO/refgQqO6urqrPH+eLU6fOUVprjRBCCCGEEGJJGNf6AIQQQgghhLiRSIEthBBCCCHEEpICWwghhBBCiCUkBbYQQgghhBBLSApsIYQQQgghlpAU2EIIIYQQQiwhKbC... | [
"yes",
"no"
] | null | 0 |
math | grade-4 | parallel-perpendicular-and-intersecting-lines | false | true | Are these lines perpendicular? | "iVBORw0KGgoAAAANSUhEUgAAAHIAAACRCAYAAAAfDexRAAALL0lEQVR4nO2dfXRMdxrHP5NIGiIMpV4qx0taZVewp6Vqqyu01SINskREKy0V9BSLDa1WrcVBo5ucLEpsEyRqbOO1sUU1WcGG2m1IX0K95USlmmpGMpE0ZGb/6JnpJJm8MHfmvszv858J9/ec83Hv3Dzf33OvzmKxWBCoHi+5CxBIgxCpEYRImSg1GUlJTyAnN0uS4zWT5CiCJnP42B427Yzji6+O07lDV45uvyLJcYVIN3D1+yuk7Erg8LE9fHf9iu3z6RGxkq2hE3e... | [
"no",
"yes"
] | null | 0 |
math | pre-k | count-sides | true | false | Which shape has 4 sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAE/ElEQVR4nO3dT28bVRiF8XeSOKKhoWwAsYAd8AFYlK/AN0dZA1JTVrQSYVfHibFju8PCqsSOjufec8878/xWVKXq6M7jP3MWadf3fX/3FPHHOmJ1iNj3AYx20UVcn0d8dxXx1WVEd7ft+5v71peFKXv5WcTF6/XxF19fRvzw6bFCYKzVIeLVY8RfTxG364iz+/3xN4gMJV2fH5uKiHg4RJwd/vMbQEkfmtr1EWdtLwVzQWiQIDRIEBokCA0ShAYJQoMEoUGC0CB... | 0 |
math | grade-1 | more-less-and-equally-likely | false | true | On which color is the spinner more likely to land? | "iVBORw0KGgoAAAANSUhEUgAAAc8AAABkCAYAAADg1LuyAAAQiUlEQVR4nO3de3BUVYIG8C8POg+S9O2Q5jGaGAKCQBKgb4M4go+AqDNKQFZJQqIEx3IcRylXCBFRFspaHNDFqq3aFZHEQugES1lxdWsXQcTZWlS6GwgJ8k4gQSfPvh2603mR3j8cKDHvTnefvs33+4ci3Nzz9V8f5/Y554a43W43iIiIaMBCRQcgIiJSG5YnERHRILE8iYiIBilcdABPOJ0tUOwKFJsCm6LArigAAK0kQSdJkHQSJK2E4cOjxQYlIqKgFBLIC4bq6+t... | [
"white",
"yellow",
"neither; white and yellow are equally likely"
] | null | 0 |
science | grade-3 | identify-rocks-using-properties | true | false | Select the one substance that is not a rock. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAANcAAAEGCAYAAAD2aACLAADuP0lEQVR4nOz9V5BkaXbnif2uvn5daw8PLTIzUpfIUl1VXS3QQKMbwAwWM7a0EUYujUYjjS984QOfSTPygbY2w31YM5K7D+TOLBRnFoMZoNG6ukuLzEqdkaG1a+1XCz54ZFZWdzVGoBOoKcbfzMMjrrtfv3Hv97/nfOc753+ED/tRdC4OSYlTnOIU/wkYBrA2hmMXsjK8lplsF0+JdYpT/M2QlOBcfPL7KPh0u3hKrFOc4m+ORzzyok+3iX83h3KKU3z5cUquU5z... | 2 |
math | pre-k | addition-sentences-up-to-10-which-model-matches | true | false | Which shows 1+6=7? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAXYAAABKCAYAAACvkX8HAAAM6klEQVR4nO3dW2wc133H8e/cdpfcXVExJdEyqZiUJUVObEuwIqj2gxsXtIA85MEIVMSA/eICNYo4BYIkfcxbgQQBYqAtmuQpBVLUSIv2IekFUZPaaIE6saEmcdw4kQSRsC4mRa0jcu87l5OH4VIkteLuLOfMzq7/H0CgpJ09Mz/O4j+zZ86cMZRSaqkFl2tQ9sFTCCGEGCK2AUULjo7DVAaMpaZSb64NerOEEELE4cwesC/Vwn8czMDH8mHVF0IIMTzKPvy2Cu+... | 0 |
math | pre-k | represent-numbers-with-shapes-up-to-3 | true | false | Which group has 2 stars? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAFnUlEQVR4nO3csW8TZxzG8ccJGIkawmC1RR5KUWhhcrLAZBGpLESqiitRZQviDyCsLUPbiZGoyVzMWiGRtCodMQ0TC2ZKaRBJB0iqZkgdE8kp0XWwHJnEgdxxjvM4388SW5bv3uGr8y++V04EQRAsrEpPV6TlNelVIGDX2ZeQDnVLJw5KHySlxEI1CB6W270sYPvOHJb2zazUnhxNSp++V6sa2G2W16QnL6X5VenPFamr/Kr2AtFiNzvUXWtUkiprUtdawwvAblZ... | 2 |
math | grade-2 | which-table-is-correct | true | true | Barry went to the snack bar during a basketball game and saw:He wanted to know how many of each item there were, so he made a table of the items he saw. Which is his table? | "iVBORw0KGgoAAAANSUhEUgAAAakAAAEcCAYAAAB9K0udAADM0klEQVR4nOz9Z5hc13WmDd8nn1M5dI7ogNAIBEiQIAlmkQrUkKIk2hrLcpblOLbGY8/Ma4/fsT97LGvsbzy2JUsO8iV7RpKtTImiJFIEgxjADBAkcgMNdA7Vlevk8P4ooEkqUJIJsBtg3deFH2igq87eVfs8Z6/9rLWEP/zDP4xo0aJFixYt1iAywB/8wR+s9nW0aNGiRYsW34W42hfQokWLFi1afD9aItWiRYsWLdYsLZFq0aJFixZrFnm1L6BFixYtWrwKUUQURVi... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAxMAAAEcCAYAAAC8k+msAAEAAElEQVR4nOz9d5xc133f/79uv3f6zPaOLegAAXYSJEVSlGxRIVVtxbbiFsclTmx9nThx7PgX6WvHihL/7DiWXOTID9mJrETFkiyKKhQhkhJJkARJgCDRF1jsYvvu9Jnb5pbvH0MsSXVZAHcBnufjwYceALW795zlzp7PnHM+b+l973tfjCAIgiBsQO973/vW+xEEQRCE70IFeO9737vezyEIgiAI30IUE4IgCBubvN4PIAiCIAiCIAjC5UkUE4IgCIIgCIIg/KO... | 1 |
math | grade-8 | identify-congruent-figures | false | true | Are these shapes congruent? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEcCAYAAAD9QsM6AABanElEQVR4nO3dd1yVZQPG8d85hyWIoKA4cGKuXGml5psjt+JMTU0NV+Y2V2VLM8tyb7NQ08yR5Z5prszxlhkqmjMVBRVcKDLPef8gKV/NBA48jOv7+fRJjvd5nusg4+Lhfu7bZLPZbIiIiIiIiF2YjQ4gIiIiIpKVqGCLiIiIiNiRCraIiIiIiB2pYIuISJqYPn06DRs2vO+xnj170qhRo/seCwgIYMSIEekZTUQkTTkYHUBERLKm/Pnzc/Xq1aS3w8PD2bNnDzly5Eh... | [
"no",
"yes"
] | null | 0 |
science | grade-7 | predict-heat-flow-and-temperature-changes | true | false | Two solid blocks are heated to the temperatures shown. The blocks are placed so they touch. Which diagram shows the direction heat will flow? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAVkUlEQVR4nO3deXgc9X3H8ffsale7OmzZlg9sZJtgbAw2NvdNDDikBByuAEnanORqU5qjhfI0yZM8QNIE0jxPSWja5iAEwuFQIGAwSUww2ObwgQ/wgW18yIckW5JlSau9d/rHb1drHcYKu5oZrT6v59Ej7W9Hsz9ppM/M7zvz27Fs27YbE7C9CzrSkLIRESmKMguq/XBSBYwPgtUYt+2V7W53S0RK3bkjoGxbl3lwXBBmVJo0EhEpho40vBOBhgRs7QJfe8o8obA... | 0 |
science | grade-5 | animal-adaptations-beaks-mouths-and-necks | true | true | Spectacled cobras are snakes. Their predators include mongooses and eagles. The cobra uses its neck to appear large and scary to a predator. Which animal is also adapted to use its neck to appear large and scary to a predator? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOzdd7glRYHw/2+lDifcNHlgZsg45CBBUQRFBUQERVFxXcXAKy8ioijgGtB1cRUFBUygK8GA7Oq6sOtPxISCiAQRkJyZGZh47z2hQ6XfH9e5L0m46ii+vufzPPM8c87p211dXVVdXV1BxBijc44QAgMDAwMDAwMDAwMD/3eSUqK1Rlhr46ByPzAwMDAwMDAwMPB/PyklclC5HxgYGBgYGBgYGPj7EEJAPtOBGBgYGBgYGBgYGBjYcAYV/IGBgYGBgYGBgYG... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOz9ebxnR13g/79qO8tnvXvfezu9d9Lp7AuQsIdV1oCyg8uYn8aBAVScn4Aiysw4OiIEiYh8BWQRRoWRUXQYIkQCSYCsZN963/vu97OdrZbvH5f0JBBIIxFGv5/n45HHI33uuefUqVN1btWpOu8SIYRgrcV7z9DQ0NDQ0NDQ0NDQv05SSrTWCCF+3EkZGvo3SQ47zkNDQ0NDQ0NDQ0P/+nnvsdb+uJMxNPRvlhx2nIeGhoaGhoaGhob+bRi27YeG/uX... | 1 |
science | grade-2 | read-a-thermometer | false | true | Select the temperature shown by this thermometer. | "iVBORw0KGgoAAAANSUhEUgAAAI4AAAHPCAYAAACFjuJ1AAAf+klEQVR4nO2dXWwb55nv//yQ9TnTTeKiMTloCtirJYstWtc2eXX2wCoJZDc4laXm5gBiqN0WWEQysZs9F6atq4NTydIW2G5E2xcbtKAiAXsTUZX3nKC7Ymwc7C4acpEWXQQlowRYnIBUPrY24qFiWSI5PBcKp6RIydK8HIrj5/kBQqIZzvBV8+t/3nfmnee13bt3rwKGOSL2424AY01YHMYQLA5jCOd+OyoV7vowu9hstoZtTcUpFotQVdX0BjHWoLe3F319fXXb+FL... | [
"55°F",
"90°F",
"70°F"
] | null | 0 |
math | pre-k | addition-sentences-up-to-10-which-model-matches | true | false | Which shows 3+6=9? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAgwAAABKCAYAAADXGAxXAAAOnElEQVR4nO3dS2wc92HH8d9/HvuaXa4l6kGLdCRKthqmdoIoDyWn2gVtH4xcUhjIIbkE6cUpAvTUWw45BEFySoMUaHLMIcg1Lgo4cSAkPTVtHcDxo44UU4osVhRN2iT3MbPz+PcwXJJLrndmduc/M7v6fQBCFHd3Zr4W/Od/Z2ZnhJRS3u8BtzrAng94EkRERPSQMwTQ0IEnasD5EiDuO1L+fjfvzSIiIqKiuj4HGDc74V8eLQF/ZYWzCSIiInq47fnAO23g/3r... | 1 |
math | pre-k | represent-numbers-up-to-20 | true | false |
Which picture shows 3 rectangles? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAIgAAABcCAYAAAC1Ff1rAAACJElEQVR4nO3bvU4bQRiF4TPrnwJI0iAsLiBQJh1JyjRUVNwHF8N9pEkqmpRRRJUWSB+jpLLBEsarj2KEkibHLibsZv0+jb1aa/SN9Wq0hZ0iIsZz6ftMmtbSIoQ11k/Ss570ckMaDaU0vos4nzQ9Ftro4LnUv5rli92htL+Z68H6mtbSxa30Yy5dzqRqssg3iANSbmB/M7+/qaWq/uMGIP1u4T6kqtlR0HYEAotAYBEILAKBRSCwCAQWgcAiEFgEAotAYBEILAK... | 1 |
science | grade-5 | use-scientific-names-to-classify-organisms | true | true | This organism is a western crowned pigeon. Its scientific name is Goura cristata. Select the organism in the same genus as the western crowned pigeon. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOy9ebwcVZn//z7nVFVvd19zc5ObfSUkAYMEwhYWWUURVBAXFpcRGRnccPSnfh1mdEYUx2EUHTdcUGZwGUREEBEICRBIQjYg+3qT3H3vreqc8/ujqjv3QoCgURys9+vVr9zurq6utfOc53yezyOstTYIAowxxMTExMTExMTExMT830RKieM4CN/3bRzcx8TExMTExMTExPzfR0qJjIP7mJiYmJiYmJiYmNcGxhjkq70RMTExMTExMTExMTFHjjjAj4mJiYm... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6IAAADMCAYAAABp7h4wAAEAAElEQVR4nOz9ebhlZXXtj3/mfN+19j7nVJ3q6atACulEQAQ7lAjEBkNsotcOr70hGm/8aqLYRBPi/WkSFBuCxui1SdSr0asxdhGNUWlUFJAAIkiP9E1Rp917rfed8/fHu86miraIKInZ43nqKc6ufdZe7WaNNcYcQ9zdU0qYGWOMMcYYY4wxxhhjjDHGf02oKjFGROSBXpUxxrhX6JiEjjHGGGOMMcYYY4wxxn99mBkppQd6NcYYY5sQxyR0jDHGGGOMMcYYY4w... | 2 |
math | algebra-1 | perimeter-and-area-changes-in-scale | false | true | Look at this circle: If the radius is quadrupled, then which of the following statements about its area will be true? | "iVBORw0KGgoAAAANSUhEUgAAACUAAAAUCAYAAAAKuPQLAAABoklEQVR4nGO88P/Wf4ZBBpgG2gHYwKijiAWjjiIWUN1RH999YPBScGQwYFRjuH/jLllmUNVR//79Y6iKLmH4+O4DReYwMTAwMEQYBTC4ydgyFAZkMcRZhqEocJawYjBgVEPBuT5pWA2b1TSV4e3LNwwxhYlY5c8cOMlgwKjGUBiQxeAqbcMQpOXJsHXJRoYokyAGW0EThl2rtkEc9f3rN4bbl24yvHr6kmH/xj0MsiryKAbtfXGM4cL/Wyh48pZZGBYe23mYYdX0ZQx... | [
"The new area will be\n1\n4\nof the old area.",
"The new area will be 64 times the old area.",
"The new area will be 16 times the old area.",
"The new area will be 4 times the old area."
] | null | 2 |
math | grade-8 | base-plans | true | true | What does this object's base plan look like? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACRCAYAAAD5G8+IAAAlLUlEQVR4nO3db1SVdb738TfZrTWam2opcQ+5xcYsDZDuaTo4KLBGs9QSnKNnpSCgzgrRElJLG529uWtSB5KtM/7plAr+qSYnpTLLPy0vhXBWnju3EGfKtK6dnBSbnGsbFrhQ7gfEHi0nETZswM/rkeL2ur7kk0+/9eX3Caqvr69HRERERET84ppADyAiIiIi0pkoYIuIiIiI+JECtoiIiIiIHylgi4iIiIj4kQK2tJhlWaSnpxMUFEROTg6WZQV6JBEREZGACdItItI... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAygAAADwCAYAAADrcUAuAAAtNElEQVR4nO3df1jUdb738Rerq7YkQ1tK3GsO1JqlAdI5bYuLIWc1yx8p7tFzpSig7Z1iKVa22doy3HXSwnK0o+aWCv5Y3dyU0vzt5SiEW96XjhK7hVrfSW4Vdd2ZRAMXnPsPllnLXygzfAd8Pq7LC8HxO2/xH17X9/39vEIkeQUAAADAL7xer46dkw6elU7XSjX8tH1FrUOk9q2kLj+SItpIISKgAAAAAH5zrNqrT78xe4rm6cEwqbXZQwAAAAAtyYGzdR8j20h... | 0 |
math | grade-2 | which-shape-illustrates-the-fraction | true | false |
Look at the colored part of each shape. Which shape shows two-thirds? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAQyklEQVR4nO2de1CTZ77HvxESORDAqruQIqKjwQppqawWtgK9WCWh7Y7ukqRztuusCDOnnTOeqp05U2dnuufMtm5nt2xPe3b3D6G6092dDemu3YsStN3jgVS5WDHcxETFJEJAFEzyamOAzf4R3tcEA+Ty3iDv5w+Vl1ye+M3v9z6/y/M8Ip/P5xv2AlfuAe4pYNIHgUVEoghITQDkyUCGBBAN3/f52l1cD0uADYrSgETLPf8PMgmwIcX/bRBYPLingMt3AYcXMN8... | 1 |
math | grade-5 | three-dimensional-figures-viewed-from-different-perspectives | true | true | If you look at this object from the side, what will you see? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAElCAYAAADeN5VfAABDKElEQVR4nO3de1zUdb4/8NdwE2FgEFARIUAtkyJgATNkF9k9P8nKS4lragmsG5zKErzk2e0nDFjntykFtpUHXRPcREtJlLTwbDG23sV10LwVrSMQAioNFxGRYX5/jPNN7re5wuv5zwpze3N6HHvx6f15v0VqtVoNIiIiIiLSCQtjF0BERERENJgwYBMRERER6RADNhERERGRDjFgExERERHpEAP2ICSXyxEREQEfHx9kZ2cbuxwiIiKiIUXEKSKDh1KpRGJiIrKystp... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6AAAAElCAYAAAD6J4/zAABKdklEQVR4nO3dfVzUdbr/8fdwJ8IIiHdoEpiVxWbgqmTkHmT3/HK78aZN19IKXDc97bYJaXV296eA1vntGgV2tjpoJnjSbNUiTQvPFth6f7NC5k1Fx1EIAW8abiREYH5/jMx6B3IzzDD4ej4e56EwM9/vxeno6d3n+l6XwWKxWAQAAADALgwGg7NLADotN2cXAAAAAAC4PhBAAQAAAAAOQQAFAAAAADgEARQAAAAA4BAE0C4oLy9PMTExGjRokDIzM51dDgAAAAB... | 0 |
math | grade-4 | parallel-perpendicular-and-intersecting-lines | false | true | Are these lines perpendicular? | "iVBORw0KGgoAAAANSUhEUgAAAJoAAAB2CAYAAAAweYruAAALyklEQVR4nO3dfVRUZQLH8e+gIwSK+AJSrGgc9ZiblpykU2q+pmSSqx4pyrDSXLUi8gVDUF4CSUCXRUtzrV0wF8VjmFgJpfiC7op78K3U4wthHjYWLdEYHBgY9g+acQgwwblz5955Pn8Cd+7DOb/z3Jk7z+8+moaGhgYEQWJOcg9AcAwiaIJNiKAJVvd54VEy8gqa/KyjTGMRVKa0vIKYv2ex8+C/uVVby/kt65v8XgRNaLfKKh27DhexdsduTl4qNf/84Qd96evt1eR... | [
"yes",
"no"
] | null | 0 |
math | grade-1 | subtraction-sentences-using-number-lines-up-to-10 | false | true | Which subtraction sentence does this model show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABhCAYAAADsidaRAAAUYklEQVR4nO3de1CU593G8QsQJMhRBQ0tgWBHjIZ4jIg29ZDRmKaJ2kSiHSeS1JiaZmy0r2NM0qkmtJqmSZOJnUxMOrU2xfFUMCZ1zIwG8C1yEEHf6KiNBpUAVkQIR2Fl3z8edxHRcHDl2Wf5fmaY3X2WWX73uHhf3HsfvOx2u10AAAAAXMLb7AIAAAAAT0LABoCr6mzSZ2elBfsk3w+lNQVmVwQAsKI+ZhcAAO5i+2nphf+VWiTZmDwHAOgmRrAB4KqFQ6WaZ6STT5p... | [
"7–4=3",
"6–1=5",
"6–5=1",
"10–1=9"
] | null | 1 |
math | pre-k | addition-sentences-up-to-10-which-model-matches | true | false | Which shows 3+6=9? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAdoAAABKCAYAAAAc9ZVYAAANiElEQVR4nO3dTYwb533H8e+88X13La3erJUjrWSrUWo3qPqi5FSnkO1DkEsKAzkkl6C9uEWAnnrLoYcgaE9t0QJtjzkEucZFAacOhKanpm0COLHdRIpXiixVK3nX3l2+c2aeHrjvS5Mcch5ylv59AEEvJGfmKy7w5wyHQ8cYYx614U4dtiIIDSIiIjIi34E5D54rwdkcOI9axvx4c9qbJSIiMntuzIN/u979y9M5+I1ydwqLiIjIaLYi+EUN/q8Nv6yDuxl2b9C... | 1 |
math | grade-2 | which-shape-illustrates-the-fraction | true | false |
Look at the colored part of each shape. Which shape shows one-fourth? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAACf0lEQVR4nO3Zv04UURxH8e/svwJBsdHYERMxdnRUJr6BnQ9AwRNQU9j6Bia+AB1vQEJHYw1roZXY6S5swsrmWkxILGVYd8ie86l2Mrn53cyZmym2KqWU82nyZZKMZ8l1iZZIr0rWusmLleTpIKnOr0o5GbW9LS3C9sOkN5zUF88GycsH9dug5TGeJaeXyfdpcjZJOqPr+oaxl9Nat26bJBezpDP764aW003b3yXptLsVLZrBYQwOY3AYg8MYHMbgMAaH6TVZ9On... | 3 |
science | grade-4 | identify-rocks-using-properties | true | false | Select the one substance that is not a rock. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAANcAAAEGCAYAAAD2aACLAABWWUlEQVR4nO19ebQlRX3/p6q6+963DzDMDAyDgITFDWRkYI6AEVAJq4lLjAtyBA9HwaAYNZHoj3PwRI8baAQjGhQVBMUFlyAaI4JCBokgIAgCAyIw+5t52729VH1/f1RX9XK7773v3XfnvYH+zHnTfXut7q5vffdvsd/uIDp4CBgRqFChwhwwKYGHpoFnAmA3Bzhmid7OK8KqUKE3jAjg4CG9PiWT7bwirAoVeoeho5CSbU7RgX6g2l6IiNru7xVEsvNBbc/vrX2... | 0 |
math | kindergarten | classify-shapes-by-color | true | false | Which square is green? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAACcUlEQVR4nO3dO24UQRhG0X/Gj4BnBmIBwAaQ2H+K2AA2OSb1gCWMhyZoIZEzuiMN50TdquQLriqtzbIsy839zOe7md1+5mEZ+Gfnm5mnZzOvH828vJzZ3PxYlg+3x57FKXv/bOb8+m79eXU58/bxWiH8q91+5tP3mS/3M1d3M9vbh/VAZBzS07O1qZmZb/uZ7f6vAzikP039XGa2x53C/0JoJIRGQmgkhEZCaCSERkJoJIRGQmgkhEZCaCSERkJoJIRGQmgkhEZ... | 1 |
science | grade-6 | identify-ecosystems | true | false | Select the temperate deciduous forest 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:
a small amount of rai... | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAp8AAACtCAYAAAD2xRSHAAEAAElEQVR4nOz9eZwlVX3/jz/Pqe3uvff09Oz7MCwjOwgCsmiCigsKMYo/YhSXaBSVBIIJXxOj+DFEP6AhGiOKJEa/GsUvGoMg+74NDAzMvk/39N5991rO+f1RdW/37enphmlgVOo1j5rT91adU6eW+6hXvZfXWzw2qvWqNGQNYsSIESNGjBgxYsR4RZAPYGMRxJivdUw8Y8SIESNGjBgxYrzSyAcgtNb6cE8kRowYMWLEiBEjxmsD5sQPH/3pyKwG02JW3dFqlgP... | 1 |
math | grade-2 | more-less-and-equally-likely | false | true | If you select a marble without looking, which color are you more likely to pick? | "iVBORw0KGgoAAAANSUhEUgAAAPoAAACnCAYAAAA4/EEUAABIzElEQVR4nO29eZxV1Znu/137nFPzPEhBqYUFyBAcELwO2GU0LRCNbYDEMSSaTke007+0krQ4Jen8BOSmE5NOWk3SSa4ao161EXNvi3ZMK0jL2KASAZnCUAMU1EBVnXHvte4fa0+nqoAaTlVR1Hk+Hz6bfYa99zl1nv2+613Pel6hlFKkkUYaZzSMob6ANNJIY+CRJnoaaYwApImeRhojAMGhvoA00hhueOutt3jnnXc4cOAAhw4dora2ltraWjIzM6msrKSyspKzzz6... | [
"black",
"blue",
"neither; black and blue are equally likely"
] | null | 2 |
math | grade-3 | interpret-line-graphs | false | true | An e-cards website showed the growing cost of a book of stamps to point out the cost savings from switching to e-cards. In which year on the graph did a book of stamps cost $7? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFtCAYAAAA9PB1eAABjS0lEQVR4nO3de3xU9Z3/8ddMZibJZHIDAoEA4ZJAiNyFEOQWwAsacVW8BLEXS93urlvc3f7qtvbibmmt29oLWlztttW1rXWJEAVRVC7hEpCb3O8hEEgIuU+SyWUmmZnfHzEjkUAQk5mQvJ+Ph4+HnDkz5zPfnCTvfOd7Psfg9Xq9iIiIiIhIhzAGugARERERke7EFOgC5OrOnDnDRx99RG5uLg6HA5vNxsCBA7n11ltJTk4OdHnX5MMPP+Sjjz6irq6O2bNn88ADD3T... | [
"1980",
"1985",
"1990",
"2000"
] | null | 3 |
math | grade-5 | range-find-the-missing-number | false | true | Emmy has the following data: If the range is 18, which number could b be? | "iVBORw0KGgoAAAANSUhEUgAAAQ4AAAAkCAYAAAB48dRBAAAGm0lEQVR4nO3cbXBU1R3H8e/e3WCymyx5TkMCMSmQZCFNEBVKfAjFBhRIqchMcVpH7Qv6MFPrqDOtDh1rkakzjC3qWO10fKj0haBj0Ehr0EkpDU0UEULzoBGzhNA87IaEJJsN2b17+yIh45Yw5E7vJXfb/+fl2bN7fnvOzH/2nnvu2jRN0wBCkQiBsEpE09AQQogJNkCx2XA57MQpykSbpmnaaFglqKqzm04IYXkJdjtOhx0lFNGkaAghZiSoqoQiGkpQDc92FiFEDAm... | [
"44",
"47"
] | null | 1 |
math | grade-4 | compare-area-and-perimeter-of-two-figures | true | false | Which figure has a greater area? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOgAAACDCAYAAACHmlfhAAAGR0lEQVR4nO3cT0iU+x7H8c9jjg3nHq9Q08RAFoH33oUuHAxcSCY6MLiYaGNWFGQw0MKFgps2Bi2ihSCuxEjOIqZFBNG/TRujCOLsZiXnzgWzFipOQ6lHnLHpOYs5xpmjCE3jfb7TvF+bmed5fjN+N29/Mzij47quu5iT/rcurealz64AeKTWker3Sf/6STpcJzmLWdf9dcXrsQD8Xfs/pdrUeuEgVCf95x+FegF4YzUv/fa7tJCT/rsu1ax8LlwgTsB79fsKLUr... | 0 |
math | grade-7 | parallel-perpendicular-and-intersecting-lines | false | true | Are these lines intersecting? | "iVBORw0KGgoAAAANSUhEUgAAAGsAAABcCAYAAABpwEsZAAAJw0lEQVR4nO2de1hUZRrAfwOoQ86wSVDKJV2FMa+4yN0sa0tb11zL7BHW2uzZ1sdLruElF80LmqWlu+Xz6ObTs5qVdFEr5XHTbtu26HCJIDRyGEviIgmNOoMNysDZP4YZmQQZkDPnDHN+f3KG+V748X3zcr73e49KEAQBBa/AT+oAFNxHkeVFKLK6iX++fJgD+/NFHSNA1Hf3AQpyjTy9aDfnfrpI9qcrRB1LkdVFLGYrL274gIMts0mjURMWESzqmIqsLnBgfz4vPvs... | [
"yes",
"no"
] | null | 0 |
math | algebra-1 | describe-linear-and-exponential-growth-and-decay | false | true | How does h(t) change over the interval from t=
–
7 to t=
–
4? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABvqElEQVR4nO39e3yU9Z0+/l+TOWVynJxIQiABDCCHBAwgclJZrFhtXUFdrCegtq6tWNuu7bpbP/21/Vk/3W21n7qealVA21plRVoOgYIgpEGIRAgkIEKAHIAcJpkkM5nDPTP3/f1jnJBAgBm437lnkuv5ePRhM+S+8sp9Z+655p17JjpFURQQEREREZEq4rQegIiIiIhoMGHBJiIiIiJSEQs2EREREZGKWLCJqI877rgDa9as6fff9uzZgxtuuAE+nw8A8O677+Lo0aO... | [
"h(t) decreases by a factor of 3",
"h(t) decreases by 3",
"h(t) decreases by 1",
"h(t) decreases by 4"
] | null | 1 |
math | kindergarten | represent-numbers-up-to-10 | true | false | Which group has 8 stars? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAR4AAAEcCAYAAAARAdvdAAAVkUlEQVR4nO3dP2wb25XH8TMaShqSwwcXwe68jgW5q1JyEzU2VHIJBFCxT1ZJyI0qKaUBu7RhlWtAArZ6iDoH2AWEBNC6fLCaIIWtUolSuJMWSSG8J8t6oiVuQdOP4s6M+Gf+nTvfTxM4SmjCZ/jTvbz3nmt1Op3O6ZXI3y5EfroW+dwRAIhUwRKp2CL1ksg/z4hYpz93On/+Me23BSAvfv2NSOH4ovuHb2dE/rXcTSUAiNJP1yJ/+ShyciXy1wuRqR8/d39A6AC... | 1 |
science | grade-3 | identify-plants-and-animals | true | false | Select the plant. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAEAAElEQVR4nOz9d5RlW37XCX62OedcHz4yIn3mS/dePu/LvDIyVVJVgRxCwg5000zT3TANsxpmMSMaeoZBBjQ0rhsjDagR0AhBqVSqkqoklTfP28x8L72LDB9x/b3nnG3mj33ujYh8WVDo/dOzls5asSLi3mP22fu7f/v7s1u82PL+dBXqit8/fv/4P+TRsfBOD5YzmNLwwcnwufx94P7+8X/0o67gdDX83bU7n8vfB+7vH///cIxwmvudz/S9Tnzk579NScQIBUN... | 2 |
science | grade-3 | identify-solids-liquids-and-gases | true | false | Select the liquid. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAAr6ElEQVR4nO19W4wj13nmV8Uiiyze2WR3T/d0jzQz0owkW5fIUhQnjrBxDO9i4XUSJQZ2AwfBQrsIkADJk4H1JlnsSwAniJHkwckCsQP7QcHCBnY3xu4aG0SRY8uKYyu6+jKSZiT1TF/IJpt3si6sOvvA/s8cVhfJYjd7unq6PoDD6WJdTp366j//7fxH+l6TsStJIB1BiBB3FG0buNYFtk0grwA/kxtul0NChjgppCPAleTw/x379nY5JGSIkwTxz2K3t8kn05Q... | 0 |
math | grade-8 | rotational-symmetry-amount-of-rotation | false | true | This image has rotational symmetry. What is the smallest fraction of a full turn you need to rotate the image for it to look the same? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAAdD0lEQVR4nO2deZxdVZXvv+uce2tOqkhCIIgkQWUwkoEaAhhSFRD9ICq2yJSAw0NUbKdWP4K+tp36+Z6+bm1bWhsbnIA8DPjQVrCRoarCoKmBhAiKA0rEF8hAhqq6t4Z7z17vj5t0Q8xQw97nnHtrfz+f/JNP1Vqrzr2/s6e11wKPx+PxeDwej8fj8Xg8Ho/H4/F4PB6Px+PxeDwej8fj8Xg8Ho/H4/F4PB6Px+PxeDyVjyQdQCWj9yyup6bqUlQuQzkVqLFkegThlyj... | [
"1\n6\n of a full turn",
"1\n9\n of a full turn",
"1\n7\n of a full turn",
"1\n11\n of a full turn"
] | null | 1 |
math | grade-5 | identify-rhombuses | false | true | Is this quadrilateral a rhombus? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEPCAYAAAB4ALMPAAA0GElEQVR4nO3de3Sbd37n9w9AgAQIEgAJUiJFXagrJVJ32bIsW9aMPN64adKt99ZRczbd9e5pGzvxxHE2iU+yaStvo2mSeppmkq1m69qbM2lnjtu1NrObdeyxFF8ky7JlXUndKIoUSV14AwjiSlye/iH5kTgmJYEE+JDA+3X8x+cBiOf5aM748Cv4eX4/m2EYhgAAAADkhd3qAgAAAEAxYcAGAAAA8ogBGwAAAMgjBmwAAAAgjxiwAQAAgDxiwAYAAADyiAEbAAAAyCO... | [
"no",
"yes"
] | null | 1 |
math | grade-4 | parallel-perpendicular-and-intersecting-lines | false | true | Are these lines intersecting? | "iVBORw0KGgoAAAANSUhEUgAAAFgAAABYCAYAAABxlTA0AAAKPklEQVR4nO2deVRU9xXHv0+WyKpxazXyBC1qNKJEWwVSNWpcTx5LsG6UWCFVejwCtgW1GmJciGlUOFYxERGNSw1WAbdCtMJxARMXEtyaKnLEmLAJjLLNMHP7B2feGWZYZob33rxRPv8xzO93L9958967l++dYYiI0IVodLN0Ai86XQKLTJfAJpJ6Pg0JmXuNfr6t7g+LE1fiVace+LWnFxZOChQ8OWvmzLXzCNkWhepaBY6v/sLodYzuRS6nMA9T1s4HANjb2mPBRA6... | [
"no",
"yes"
] | null | 1 |
math | grade-8 | parts-of-a-circle | false | true | What is \line{XY}? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADICAYAAACdx5VnAAAmzklEQVR4nO3dd3gVZeL28fskJ5UEQmgBAoQa6SKhBqUmSBUBESy4otgVdQVsP1xfdXVtK4ILCi6IoGABpQiCGIoKJPQOUiIlJKSShPRk3j/AIVlKQAJzzsn3c11ePvPMTHInnD/uM3nOjM0wDEMAAAAAXILd6gDXg81muyZfl/dGAAAAcDTlouBTxAEAAFBeuFkdAAAAAEDZcbPZbFq1atV5Ozp37qyaNWueNx8bGyubzaapU6dq+vTpstlsKigouOZBhw4dql69el3... | [
"diameter",
"center",
"radius"
] | null | 0 |
math | grade-2 | choose-the-appropriate-measuring-tool | true | false |
Which tool would you use to find out the length of a driveway? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJYAAACoCAYAAAACcRc/AAAYdUlEQVR4nO2dfXATx93Hv5Ilg1+wTuAYCC+WiRNoSOojeWiB5sFyS1ueThJEHpLmybRjOZOmLU1qQSedZqYDog+d9CVPrDRJZ0hIOAc6QCiJDDQkkxCLPE/NhBCQa5qXxg5nIGDAsU9GEliWtM8f4o6TLJ1OwSfL1n5mGKzV73b37r7a3fv9dvd0hBDSEwI6g8DFCBAmoFAyxqADJhUANxYDUwsBXc8gIYcHRrtalPHE18sAw6fB2IfphcDckpjqKJRMuRgBPgk... | 1 |
math | grade-4 | compare-area-and-perimeter-of-two-figures | true | false | Which figure has a greater perimeter? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAAB9CAYAAADUZDNRAAASqUlEQVR4nO3df1RUdf7H8SfgABIiuAy/FmURlVQqDXfZNE1Ek3ALNu2oK3xxj1n+KglFPZaagh3F8UfYQdlDWSfdjb7yTU1bTOrbjvslMEPQDVYxNpAfuqAgIArDzP3+MTErYorJcLnXz+OcTo6XmfO6+vIq77mfz9hIkiRdbIXzzdBohDYJQeiV+thAPzsY6gSe9mBzsUWSTjTIHUsQ7k2IC/QpaTY/8LaHwIfMzRaE3qjRCGevQXUrnGsG24Y28wFRXKG362d... | 0 |
math | grade-7 | describe-a-sequence-of-transformations | false | true | What combination of transformations is shown below? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEyCAYAAADA5Kd8AAAtmElEQVR4nO3deViVdf7/8RcHFFHEHQVFwx0yN4RSU8uxzdTMpdXcssXMpl2zNCvbm2a+WVlNv3LMpqa0MlHL3PftmKbmCqIg4Ipssp5zfn8gTE4q233OzTnn+biurkvwvj/vF+Pd8Or2w337OBwOhwAAAAAYwmJ2AAAAAMCTXFCwU1JSXB7AW2aaNZeZnjXTrLneMhMAACP4/HGLiNVqNTMLAFwgKirK7AgAAJSb3/9+wtXf0KxWq1fMNGsuMz1rpllzzZoJAIA7Yg8... | [
"translation, then rotation",
"rotation, then translation",
"rotation, then reflection",
"translation, then reflection"
] | null | 3 |
science | grade-3 | read-a-thermometer | false | true | Select the temperature shown by this thermometer. | "iVBORw0KGgoAAAANSUhEUgAAAI4AAAHPCAYAAACFjuJ1AAAfj0lEQVR4nO2db2wb553nv/yjf7ZmblO7SE0O2gL2ajnFFV3XNvnq9mCVPOQaoLLUvDlADLXbAouIJnazt4Bp69ViK1m6HrYb0TYOW7SgIuHuxUVUZdwGuyvGwWJ30ZCHtNgiVzJKXgVD5c/W3nioxJbEP/dC4SwpUYo8D4ee8e/3AQSLM5yZx8nH33me+fN7XHfv3q2DYR4R9+NuAONMWBzGFCwOYwrvQSvqde76MLu4XK59y9qKs7OzA13XLW8Q4wwGBgZw7NixlmV... | [
"100°F",
"80°F",
"65°F"
] | null | 1 |
math | grade-2 | place-value-models-up-to-hundreds | true | false | Which place-value model shows 124? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAPEAAACSCAYAAACUqyz9AAAaXElEQVR4nO2da4wk13Xff/feqq5+P2Z2Zh9ckqIoSpBIhVQUkbZp2lIUxqFt2rIt2ElECFGU5IsTWwoEOEAQCLEABfkQAQmCBBCSGHGCxBZhRhJFWRapByXasRiRoowkNl9L7nN2nv1+1TMfqnumu6e7Z7PbMzvdOj+gsOTW3VOnu+vUvffc86+roiiKrrrwWgvqAfgRgiAcYywFOQN3peFkAtTVbhQ9X7vZbgmCcD08kAfr1Vb8P6cT8I5MHOGCIBxf6gG83IQ... | 1 |
math | calculus | domain-and-range-of-exponential-and-logarithmic-functions | false | true | What is the domain of this exponential function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABfc0lEQVR4nO3de3BU953n/U+ru3UXSEhYkmVLGHNxwAiDDY642HhwbCckTiCTwU7l4qxnEmfjJJOnKlPZVJKZSXk82c0k88TrZDOedWJna57NxhvbMwYLggM2RMRgZBBItkGWQRdAl9a176e7z3n+wFIQVwnOj6bh/apKOd30+eirc7pPf/rodLfHcRxHAAAAAFyRle4BAAAAgCsJBRsAAABwEQUbAAAAcBEFG8A4VVVV2rlz59jlw4cPa/r06Wpvb0/jVAAAZA4KNoB... | [
"$\\{x \\mid x \\leq 8\\}$",
"all real numbers",
"$\\{x \\mid x<8\\}$",
"$\\{x \\mid x \\geq 8\\}$"
] | null | 1 |
science | grade-7 | use-scientific-names-to-classify-organisms | true | true | This organism is an American alligator. Its scientific name is Alligator mississippiensis. Select the organism in the same species as the American alligator. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOzdebglVXno/+9aNe/5zKdHmu6mmUdRCQqGi0NLlDigoCYOGDWOBGIE9Re9BKNGDUEJcQxBkUQfkniNZkKNURGxmexuZui5+/SZ91Rz1ar1++PcPpcWkMGjRqzP85znOXtX7VVVq95d+61Vq1YJrbXO85yiKCiVSqVSqVQqlUq/nqSUmKaJyLJMl8l9qVQqlUqlUqn0609KiSyT+1KpVCqVSqVS6amhKArkr3olSqVSqVQqlUql0tIpE/xSqVQqlUqlUuk... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6IAAADZCAYAAAA69Y0YAAEAAElEQVR4nOzdd5glVYH//3flm+/tnMN0mJ6cI8Mk0gxpAAVEQFBRXBF1xbzrqqjrrquiYkCCBEEERXIe0gwzA5NjT09P55z75lD598d8l++66or+WN31e1/PM89037q36lTVp89T555zqgTAJS8vLy8vLy8vLy/vb8LeuEuLH4LSX7skeXmQtKE9DSMGFMhweuTU6+JftVR5eXl5eXl5eXl5ee+ofCM073+SoHQqkwAp+/++nm+I5uXl5eXl5eXl5f0NyTdC8/6... | 0 |
science | grade-6 | identify-rocks-and-minerals | false | true | Plagioclase has the following properties:
not made by living things
naturally occurring
fixed crystal structure
pure substance
solid Is plagioclase a mineral? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAACaFElEQVR4nOz995Nl53nnCX6OP9d7lz6zvIEpGBL0lNhsI2la3aOY2JjdHk3Mxux/NT+t6diI3W5tz7bUalESKRIEQdgCCqYqK7253tvjz/7w3nsA0IDspSSim/kwGCgkqupm3nue933M10hhGIZcxVVcxS8M+bf9DVzFVXyR4ypBruIqPieuEuQqruJz4ipBruIqPieuEuQqruJz4ipBruIqPieuEuQqruJz4ipBruIqPieuEuQqruJz4ipBruIqPieuEuQqruJz4ip... | [
"yes",
"no"
] | null | 0 |
math | grade-6 | changes-in-mean-median-mode-and-range | false | true | Look at this set of 6 numbers: How would the mean change if the number 37 were added to the set? | "iVBORw0KGgoAAAANSUhEUgAAAPEAAAAkCAYAAABYONyVAAAGCElEQVR4nO3ca1BUdRjH8e+eXZPLAgkCKWpp3IsUFUWRwvKWFlNZL6xsKqdpbGqqqTdNY+OUNtOMYzPVdBmbvHSZ0iatjMpMxkwB5aJYRBmBECmKCXHV3bOnF8QO67K4cM6ynOn5vPz/H9gfPPPs/nfP7lo0TdMAHC4XHU4Vl6ahIYQYiSyAYrEQbrMySlF61jRN0zqdKl2qGtx0QohBCbVaCbNZsTlcLhlgIUyoS1WxKRYUGWAhzKtbVVGcLnkGLIRZOV0aioywEOa... | [
"increase",
"decrease",
"no change"
] | null | 1 |
math | grade-5 | range-find-the-missing-number | false | true | Braden has the following data: If the range is 23, which number could u be? | "iVBORw0KGgoAAAANSUhEUgAAAUgAAAAkCAYAAADrVaOmAAAHmUlEQVR4nO3da1BU5xnA8f9eYJflKpcFA2giF7koXhIRBqedatCaaK2ZdGLHTNMPZppOmjHpdDrtl7Zf2u9pp62T1tjJJJOkk3YajZqY6hgxIkZAQYlcitxWhAiyu4LssrunHxaBDayssGfPOnl+3zzzHt/3fd5nnj3vnnMWnaIoCoDHA+Pj4PMBCkII8c2iA70ezGYwGicPKYqiuMbB5dJ2bEIIES1MJjCZwej1SHEUQoiZXC4wGEEvxVEIIWZzu0Dv9Wo9DCGEiD5... | [
"14",
"2"
] | null | 0 |
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