subject stringclasses 4
values | grade stringclasses 15
values | skill stringclasses 445
values | pic_choice bool 2
classes | pic_prob bool 2
classes | problem stringlengths 0 1.12k | problem_pic unknown | choices listlengths 2 4 ⌀ | choices_pic listlengths 2 4 ⌀ | answer_idx int64 0 3 |
|---|---|---|---|---|---|---|---|---|---|
math | pre-k | count-pictures-up-to-5 | false | true | How many sheep are there? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAACbCAYAAAAX3e8+AAA9c0lEQVR4nO3dd3xc1Z3//9e509VHvduWK+4N04wNmBpCgCWwIZDyzabsssl+t2bZ/Ege398vySa7fPeXTbL5JbtJdkk2hZCQb0LAJDQDNt3gXmSrWL1rNNL0cs/vj5HHNpKxyowkjz7PP0Cacu8Z8X7MOZx77ucorbVGCCGEEEIIkRGss3lyMx6np72JSDBESVUNzuw8DMPAPzJEW+MxuttaKKtewIKlK8nKyZ/NpoqLkORLpJPkSwghxFw1YwN804yDqTExsRgWQkE... | [
"4",
"2",
"1",
"3"
] | null | 3 |
math | grade-7 | apply-multiplication-and-division-rules | false | true | The number line shows an unknown number, r. Is – 4r positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAFpUlEQVR4nO3dT0yTdxzH8c8D60MtMNchbLgBLrsRCBixguHg3XgomigeHImJicbjEpPttMyYuLMmmnhYTCR4WD2YuGTJDtULLSI0NHJZZlcy/+C40VJasDuMNqD8qbM8v5a+Xyeeh+fwSR4OH37P9/k9VjabzQoAysjw8LAsy9Lg4KDpKHAI9xxAOfnIdAAAeF8zMzOmI8Bh3HMA5aTggp3JZDQ+Pq5QKKSmpiZWEbDjTE0mFY0k9eplRpL02ecudXZ71NHlMZwMAFB... | [
"negative",
"positive"
] | null | 1 |
science | grade-7 | identify-rocks-and-minerals | false | true | Chalk has the following properties:
not made by organisms
no fixed crystal structure
naturally occurring
not a pure substance
solid
white Is chalk a mineral or a rock? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAACiRElEQVR4nOz92ZMkSZbei/2OLmbuHhG51N7bTE+DM0MQQlwBuFOEL7x8AP5aUij3iW984ANwIbyUOwAGgxnM2tNLVVdmRka4uy2qevhwVM3MIyOzqruql5lJLYmKyFh8MdOjZ/m+8x1RVeX9er/er0eX+22/gPfr/fpdXu8N5P16v96x3hvI+/V+vWO9N5D36/16x3pvIO/X+/WO9d5A3q/36x3rvYG8X+/XO9Z7A3m/3q93rPcG8n69X+9Y7w3k/Xq/3rHeG8j79X6... | [
"rock",
"mineral"
] | null | 0 |
math | algebra-1 | identify-linear-and-exponential-functions-from-tables | false | true | Is this function linear or exponential? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEqCAYAAAAvYSeKAAAcSElEQVR4nO3df1jV9eH38Zf8OpZDJRXH19SRJZDBxCxbHH+Uiet0RdN+qDUMKWmTkrs7WKXpVVheKo2R3WjasmFqTmvNs2QbWIPkplxbt2VNm5tI2OjAsTAgRETuP7zHN25sWbw5H8/nPB/XxeX1eZ9z3u/X8a/X9b7e5/Pp05Gb0CF/kPk7qfBGq1OcnSXvWp0AAAAAFgmyOgAAAABgJxRsAAAAwCAKNgAAAGAQBRsAAAAwiIINAAAAGETBBgAAAAyiYAMAAAAGUbA... | [
"exponential",
"linear"
] | null | 0 |
math | grade-8 | identify-alternate-interior-and-alternate-exterior-angles | false | true | \line{JL} and \line{MO} are parallel lines. Which angles are alternate interior angles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD2CAYAAADs6vBqAAAfAElEQVR4nO3dfVCVdd7H8c/hSRnLg+xgShikoSyJIGBmRXhwGWs3Epva3azxoWZiNt0VV9usyTKde3pYTXYtm13XxNl0x5hGVpsph1JUaqU8yEMq6YqwMmtJq9CkoiHn/sMbVm4O+HCuc65zzvV+zTAT1+/A9f19//r47Xdd2Fwul0sW1NraKkmKiooytY5ARf8AAADcCzG7ALMUFxeruLjY7DICFv0DAABwz2bVCXZCQoJsNpuOHTtmdikBif4BAAC4Z8kJdmlpqZq... | [
"\\angle{MNK} and \\angle{MNP}",
"\\angle{MNK} and \\angle{ONK}",
"\\angle{MNK} and \\angle{LKI}",
"\\angle{MNK} and \\angle{LKN}"
] | null | 3 |
math | grade-2 | match-addition-sentences-and-models-sums-to-10 | true | false | Which shows 7+3=10? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAgwAAABKCAYAAADXGAxXAAAOc0lEQVR4nO3dTYwb533H8d/zzHCG70uJsixpDUVwLDmOI1mO0jpxigIFWqUO4pORAi0KH5MekgAq2t56KVAUaYv0ErRBb+2h6MstTp0ivQRFiwRK1CCxgmQlQVCVePW60nL5Ppx5nh5maS1XFIdDzkMOR78PsFhJ3J3hdzWL+ZMzHAqttb7tAdc6QDMAfA0iIiJ6ytkCqFjAySLwrAOI232tL+4s+24RERFRWr1WBeyrnfAvRx3gxVI4TRAREdHTrRkAG23glgd... | 1 |
math | grade-1 | comparing-review | true | false | Which group has more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAABeCAYAAADhenCDAAAEUElEQVR4nO2dwU8bRxSHf2MDs4CDjVo1zQVxMfEhUXIwwvceKgVVoJ76L+YShVREyYG7CT4g5WJwD20upWoVbLDNLmU1PWxWchyvKeHNLjvvfReEjd7Obz7Panc1zyhjjDm5BH4bAuchcGUgOMSMAu4VgeoCcH8OUCeBMe/Osh6WkAYbS8BMZxj98mAOeLgYfRoEdzgPgaMB8OclcDwECmdX0Rsi203uFSO3ANAPgUI48obgJrHbfw1QyHYoQtqIcGaIcGaIcGa... | 1 |
math | grade-3 | identify-two-dimensional-shapes | false | true | What shape is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADHCAYAAAAjzCRiAAAPzUlEQVR4nO3dy25U55rH4X96t3rS876DvpS+OoPkgUcwgmEjpFZL5hDvSBgpiWQhRQIGAWxcyJJNUTYpG59rHXpQm945EU5Vtdaqep4hScgHGNWvXn+13m/quq4DAABMxL80fQAAAJgnAhsAACZIYAMAwAQJbAAAmCCBDQAAEySwAQBgggQ2AABMkMAGAIAJEtgAADBBApvOe3ZcZ7VfNX0MAIAkyb82fQD4Gr2zOssvi/ztm+S//uNf8m/fNH0iAGDRmWDTWbvnydX... | [
"hexagon",
"triangle"
] | null | 1 |
math | kindergarten | ordinal-numbers-up-to-tenth | false | true | The first picture is a tractor. Which picture is eighth? first | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAo3UlEQVR4nO3de1xUZf4H8M/DgAwOAqKhDuUdzVYDS90sUUsr3V3SytRqS8tN20ysrG2z3dTU7KJdtEzNW/bbrbQso9U0TQhrbcHAS3kBykuCUiLIwMwwDM/vj2euzO3MzJkLzPf9erXCzJlzHs5+v8955pznwjjnHIQQQgghhBBZRIW6AIQQQgghhLQm1MAmhBBCCCFERgFrYFcbOHrsvISBX9Wi2kC9UAghhBBCSGTwqYH9aYUBC47p3Dacc39rxMn6JhTXGPHAgXq... | [
"sun",
"barn",
"tractor"
] | null | 2 |
science | grade-2 | predict-heat-flow | true | false | Two solid blocks are at different temperatures. The blocks are touching. Which picture shows how heat will move? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAWz0lEQVR4nO3deXAc5Z3G8W/PaEYzkuVT2Abb2OawjbGxAXPfxCFczkE4ktSSZHNWskWlKtlk2bCpZEOS3RA2VUk2m93NwSYQAoRw2ZzB4b7M4QvjE3xiS7Yky5JGc0/vH78ZjXUAMhp1t6TnU6WSpjXT80rdevrtX7+v2nFd123IwJZOaM9DzkVEpCKqHKgLw7E1MCkKTkPadVe0+d0sERnuThsNVZs77cHhUZhda2kkIlIJ7XnYmIA9GdjUCaG2nH1DYSMilVY... | 1 |
math | algebra-1 | domain-and-range-of-absolute-value-functions-graphs | false | true | What is the domain of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABluklEQVR4nO39fXxU9Z338b8nM7m/ISHBBIIBEUVBgqJoQVBcqFhtrdC12K5WrLutvWrvrt92f/522263l3V77fbmqmu7vdztFu12r27dql3BQEFQKFSRCMEERIwQCJD7u5lkZs7MnPP7gyZNuMsMnG8mk7yej4ePNsOcdz4535kzn/nk5IzHcRxHAAAAAFyRluwCAAAAgLGEBhsAAABwEQ02AAAA4CIabABDlJeXa+fOnQNfHz58WJMmTVJDQ0MSqwIAIHXQYAMYorK... | [
"all real numbers",
"$\\{x \\mid x \\geq 2\\}$",
"$\\{x \\mid x \\geq 0\\}$",
"$\\{x \\mid x<0\\}$"
] | null | 0 |
math | grade-4 | is-it-a-polygon | false | true | Is this a polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEBCAYAAABCCtJ/AAAcoklEQVR4nO3dP3ATd7fG8UeSxVoryUK2bOLhHfuW2K3d4pSBFtqQFsobyntzq5u3DW3chrSmhZSvaU1rp7kzEfMygCUjZEkrL4tWt1jvIhP+SPZKu5K+n5kMtuNIh4SMHx2d3/klut1uVwAAAABCkYy6AAAAAGCSELABAACAEBGwAQAAgBARsAEAAIAQEbABAACAEBGwAQAAgBARsAEAAIAQEbABAACAEM1EXQBGwy47ci1XHcuVXXYkSZ2WK7v87sz3nZTfybX6u3s... | [
"no",
"yes"
] | null | 0 |
math | pre-k | count-corners | true | false | Which shape has 5 corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGeUlEQVR4nO3dPWxVdRjH8d/tLW2KFAPBUmiYFHCRxFQkYnxJjEgDoUQHBjZH4sIkRFEGAksnNCEali4wkCgLDoSE0AKBEiACArVAsEHeqry05eJte3scrrVASuk553+e83K/n63c9twzfNOmD0/PP+d5nnd7SLpSkAZK0ognILTqnFSflxZOl+bWSLnbRc/r6o/7tpBly2ZK1T2F8gfzaqTFL5UrBMIaKEndj6RbQ9LvBamqf6T8ApHBpfp8uSlJGixJVaUnXgB... | 2 |
math | kindergarten | square-corners | true | false | Which shape has 4 square corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAF40lEQVR4nO3dy24URxiG4XdsMDInS7GVg1fJImTFLsJXkXsIXENYsWZFrgFyDclVYGXHCogEK8dRcKRgbAsHq7OYVDj8NvZM1+Gvqu/dzIxGrSlpHnVrpruqJ8MwDNuH8Ns+7B7BmwGlRnduAlcW4euL8NkSTLZfD8Pmy9LDUi23cRXOPd2fvvhiCb65NFWo1Nh2j+DxHvx+CE/2YeHlm+kbQqZidmVxagrg1REsHL3zhlIxC6b+GWCh7FBULwmaypKgqSwJmsq... | 0 |
math | kindergarten | ordinal-numbers-up-to-tenth | false | true | The first picture is a turtle. Which picture is sixth? first | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAncklEQVR4nO3de1RTZ7o/8G9CsJAEUFACio6osUoFvJxW0MrPVmsrXS22Y9Xq6WVk1XbmVCtHZ8bbtDqDo9PaatWeerTQ1lnera3tiCODraNFcP2K3Lz014hQwUJsoRISYiWX3x+bhARy2TvZucB+PmuxhGTf1OfhfXf2+z6vyGw2m0EIIYQQQgjhhTjQF0AIIYQQQkhfQh1sQgghhBBCeOSzDvbtDjMST2kw4cs23O6gUSiEEEIIIUQYPOpgf9bYgQ3f3nHZcT7zkwF... | [
"turtle",
"sub",
"fish"
] | null | 1 |
math | algebra-1 | identify-functions-vertical-line-test | true | false | Which of these relations is a function? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAATIAAAE3CAYAAAApC812AAAj3klEQVR4nO3deXRU9aEH8O/sS7aBAEnAgCiSqQYJi5LIouKrEDUsFq3W6hOP2mOtnmqp1eMRtLjVR4s7j6f1oT6ffS4QoMpSRBFsgiYyYMSw2BAiWSDLZJt95r4/bjIzYYkE5s6de+f7OYeTzJC588vkznd+v9/9LRpBEIRGH3DQBXQGgYAAIqKEptcAaTrgAiuQZQQ0jV5B+LJD7mIREZ2ZKemA/oBLvJFjBPJSxJQjIkpknUFgXzfQ4AP2uwBtR0D8D4YYESl... | 1 |
math | pre-k | cubes | true | false | Which shape is a cube? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAPB0lEQVR4nO2dS4wcx3mAv+qex87sLFd8LSmTIkVRjzC0xDiB4QgIfCByCGIkOeR1yDEXBQmCwJAvMmL4ouQQODJyin1IAAMJghxycCLHji0mlh+yZMuWGMd8y+FqZZHUvh+zs7vTXT50V/fOY3d7Znqmp7v/78LdmdneX9DHYtVf9f+ltNb63jbcrsOaA02NIIwdBQVTNjxRhRMlUPe2tH5jNemwBCE6HzsEhVt175uHS/DUpGe1IIwbaw7c2ID3t+FmHazVpve... | 1 |
math | algebra-2 | describe-linear-and-exponential-growth-and-decay | false | true | How does g(t) change over the interval from t=4 to t=7? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABwoElEQVR4nO39e3RUZYIu/j91r9xvFZIQSBARWiBBQERuLba2Omo7DXbLRRTUnjn29G36j5nTv1lzep3p5fL0+s50z2qP9unpM8pFUVun0dOKgUZBoYOCRAgkKEYuuQBJqpKqSt32rfb+/RErpsItBftNpZLn8w8rCfupN3tX7XrqzVu7LIZhGCAiIiIiIlNY0z0AIiIiIqKxhAWbiIiIiMhELNhERERERCZiwSaiYfvoo49w6623QlVVAMArr7yCEydOYPbs2fD7/Wk... | [
"g(t) increases by 2",
"g(t) increases by 100%",
"g(t) increases by 300%",
"g(t) increases by 3"
] | null | 3 |
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? | "iVBORw0KGgoAAAANSUhEUgAAAQQAAACgCAYAAADq8hJGAAAY/ElEQVR4nO3d+VMcZ57n8XdmXdQFCIG4kUBYUus+LbVsa9x2+2ivLdnecTvs6emeiejZH3d/2T9g/4X9ccMRHbPt7p7otT223Bpbh63WtE5LQhJYMsJIIBD3DUXdWZn7Q1KJEAgVEpAFfF8RCgVFVZHwZH7yeb7PU5mKYRgGQggBqHZvgBAie0ggCCEsEghCCIsEghDCIoEghLBIIAghLBIIQgiLBIIQwiKBIISwSCAIISwSCEIIiwSCEMIigSCEsEggCCEsTrs3YD7... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAiAAAAC4CAYAAADaI1cbAAAkT0lEQVR4nO3d53Nb570n8O9BryRFsYFNJEVLsnq1FFtWEiuusVxjO3acZO9M7r68O3Nn3+6dfbv7H+z4TmY3TpnETnFZW67RjdUsiZJIFYomxd4rSHTglPviEKBAQhQogeccAN/PTIYRDICP9Dz88nfO+Z0HAgAFREQAFEXBeBzoCQMBCRCZDkSUIxYB8JqBh1xAtQ0QwAKEiBaNxxRcWNB7FERU6A6XABa9B0FExtEdVr/6bMBWt3q0QkSUCwEJ6AoBY3HguzB... | 0 |
science | grade-3 | read-a-thermometer | false | true | Select the temperature shown by this thermometer. | "iVBORw0KGgoAAAANSUhEUgAAAI4AAAHPCAYAAACFjuJ1AAAgqElEQVR4nO2dfWwb+Xnnv3yzLIkcv6C7eiELL1CvVjwk3U3WS+a62xdbJLpIAXvJ7aVFK66EpL10JbNBLkhXKyUtWqxkuUXT9mjr4MMFkSL1r8TD6IAe3IiRm643ABkjWQcohqd6F3tXUra7UXI7lNeSSA7vDw1nRYmyxRnNcEa/5wMIljkjzsj73e98n+H8nse2srJSAUE0iL3ZJ0BYExIOoQoSDqEKEg6hCme9F4vFIkRRNPpcCJPS2tqKtra2mtfIcQhVkHAIVZB... | [
"5°C",
"30°C",
"15°C"
] | null | 2 |
math | pre-k | represent-numbers-up-to-10 | true | false | Which group has 7 hearts? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAEcCAYAAAAV9AvgAAAMqklEQVR4nO3dQUyUdxrH8R86baEM7cYxS4VJOBDh0ESStmntDb1SPdmLJl7xSmIvPWjW9FaSXjXxREKTppxo9QjeahovNOlh6HKgASvZxZiCol3M7GEcY4vU4eV9f+8Lz/dz2VrL+3+e2cmXdpzhbavX6/V7f0j/fiStPZU26wKAVJTapK6D0tE3pe7XpbZ7T+r1H3/PeywA+91Hb0mlXx41fnHkdWmws1EjAEjD2lOp9lD67Q9p/pF04PfNxm8QGwBp6zrYaIs... | 0 |
math | grade-8 | identify-reflections-rotations-and-translations | false | true | Look at this shape: Which image shows a reflection? | "iVBORw0KGgoAAAANSUhEUgAABbAAAAC3CAYAAADD5XikAAAXi0lEQVR4nO3dbYxdBbkv8Gfa6TvFAn2bDcgE9Eq15W0L5lypVsAKEXKviSh6jkpiSE6UWKM58YUPwkfjhxs+aLx80OD1Cv0ABUswpcRbKAdtZFVBprm9p1Kg7Rr6molTpsOZ6cz9UGbbaae0M7PWXmvt/fslDXtPN89+svZL2/+s+e+OiBgNAAAgE6Oj/noNAABZmVH0AgAAAAAAMBEBNgAAAAAApSTABgAAAACglATYAAAAAACUkgAbAAAAAIBSEmADAAAAAFBKAmw... | [
"B",
"C",
"A"
] | null | 2 |
math | grade-1 | identify-faces-of-three-dimensional-shapes | false | true | Does this shape have a square as a face? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEnCAYAAACT/zRUAAA8kUlEQVR4nO3daXTc133m+W/tG4AqrFUAQSwESHARd4riYkleJHqXKMeW3UknduLYM326k5k504mT6SUnixM7dk+ns/TkxHY2d3dsyTYpybYiWXYkSqREivsOEiAWgkBhrwJQe6FqXpAoEZQskWIB/0LV83llXdKoBzZ5+Ojy3vszZbPZLCIiIiIikhdmowOIiIiIiBQTFWwRERERkTxSwRYRERERySMVbBERERGRPFLBFhERERHJIxVsEREREZE8UsEWEREREckjFWw... | [
"yes",
"no"
] | null | 0 |
math | calculus | find-inverse-functions-and-relations | false | true | The graph below shows a function. Is its inverse also a function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABkJ0lEQVR4nO39eXRc9Z3n/79KVaV9tSRLsoxkjLFBxjIYbLCxwbQJEEjo2FlM52Shv3R6ksnW+eX0nD79zeRMMgzfzLeb5IQGJp3pTCDdmUmHXwgJGOGYYGxHBhsLI1syeLcWy1pKa+23lvv9oyzb8oIl+35cLvv5OKcOqKT78lv3Vt161dWtKpdt27YAAAAAOCIr3QMAAAAAVxIKNgAAAOAgCjYAAADgIAo2gBPuuusuvfTSSye+/v3vf68bb7xRyWQyfUMBAJBhKNg... | [
"yes",
"no"
] | null | 0 |
math | pre-k | compare-size-weight-and-capacity | true | false | Which tower is shorter? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAG0AAAB8CAYAAABjcj5oAAAL1UlEQVR4nO2dTWwc5RmAn5nZP6+9G2ftOA7xiqaIInCklqoIxUWqqqKSHFBPbY8VTTlSUdEziNwqEaC0lxaBRG9JTi0HgjhFRXaLgqoiLy24CZCNE2N7/3/nv4f1rHc3u+vd9e7sjD3Pxev5Zr/5vM9+M++8885YME3T3FDgf2Uo6KCZeDgMnwARCR4Mw/EACBuyaX6UH/ewPHrl8Sj41sq1X04E4KHJmlEPZ1HQ4bMS3FXg8zKIea3W4AlzLhGp5gegqIOoNzR... | 0 |
science | grade-4 | predict-temperature-changes | true | true | Two identical blocks are heated to different temperatures. The blocks are placed so that they touch each other. Heat can flow from one block to another but cannot escape from the blocks. Later, the temperature of each block is measured again. Which pair of temperatures is possible? | "iVBORw0KGgoAAAANSUhEUgAAAQQAAACgCAYAAADq8hJGAAAa2UlEQVR4nO3dd2AUdf7/8eeWbHpIJSQkhJaEDlKjtEPFA8SCol8sd/c7PT3PcqjoWc72PeHOcvauZ/neoaeAKApIEZFeIi0mQIAAIb1setk+vz82TIgbIIEksyHvxx8apu1n97N5ZeY9n5nRKYqiIIQQgF7rBgghvIcEghBCJYEghFBJIAghVBIIQgiVBIIQQiWBIIRQSSAIIVQSCEIIlQSCEEIlgSCEUEkgCCFUEghCCJUEghBCZdS6AW2h1lrLi6te4cfMjVo3RZz... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAiAAAAC4CAYAAADaI1cbAAAnwklEQVR4nO3dd2BV9f3/8ecduVkQQhIIIxBA9lSQ4cJtcWBR0dpq22+1tlpr3dVaR1vBOtpqW1eX+mvV1j1ABXEhG2SasHdCBtkJWTf33vP74yQXQgIkkpxzbvJ6/EHg3PVJPodX3vec9/lcF2AgIgIYhkGeH7ZXQUUQAkoHEWkjXhd09cCQOEj1gQsVICJSL6/WYGW53aMQkY5ucgJ47R6EiDjHtirza28fDIs3362IiLSFiiBsqYRcP2ytArfdAxIR5ygPmF9... | 0 |
math | grade-8 | compare-linear-functions-tables-graphs-and-equations | false | true | Function A and Function B are linear functions. Which statement is true? | "iVBORw0KGgoAAAANSUhEUgAAAjcAAAGlCAYAAAAGbtd7AABPg0lEQVR4nO3de3xT9f0/8FeSJk2atLQUeoHeUlgRLVIUaFGho4iizn29cFE3h7rNbT/Z1Kmblw2nczo3mJd5+6rTzcumQyaIm7hZZOKlVFSwKC1qGmwpTWlp2qYn95zfH/0mEmibtOe0SU5ez8fDR216+j7vhHc+feecd05UoiiKICIiIlIIdawTICIiIpITmxsiIiJSFDY3REREpChsbmhcPfTQQ1CpVEP+d8EFF8Q6xTAlJSVQqVTYtGnTuO978eLFocfllVdeGff... | [
"The slope of Function A is less than the slope of Function B.",
"The slope of Function A is greater than the slope of Function B."
] | null | 1 |
math | algebra-2 | find-inverse-functions-and-relations | false | true | The graph below shows a function. Is its inverse also a function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AAB+kElEQVR4nO3deXxU9b0//teZPftOEgIJhCUQkoAgCggKgvtWsF607lplkUW7WK9tva0/L9e2VmVXK1Vsve2t3+JupCgoCAISIcmELQbISpZJJsnsM2fO+f3BDZfIlsB8cjLJ6/l4+GgzmfOaF+fMnHnPyZkZSVVVFUREREREFBI6rQsQEREREfUlHLCJiIiIiEKIAzYRERERUQhxwCYiIiIiCiEO2ETUyd/+9jds37795M+yLOO5556D2+3WsBUREVH44IBN1I+8+ea... | [
"yes",
"no"
] | null | 0 |
math | kindergarten | subtraction-sentences-up-to-5-what-does-the-model-show | false | true | Which subtraction sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAPoAAAAyCAYAAAB1V8bkAAAR/klEQVR4nO2da2wc13XHf3dmdnaWS3LJJSVKlCzqTSuRRNGWFDuJZTcuYqOJZEmm83ACxAmCJEiBth/6rS3QADXgAkGQFmhSFGljNFANR2LixGmSNk1t2Glk60HTkupKokybsqiX+V7ua163H4bc55BcviSZnD9AcHfnzsz5zZlz595z78wIKaUkUKBAS1rK7TYgUKBAi68g0AMFWgYKAj1QoGWgJR/oFy+9c7tNKNNcbAo4Fk/LgUO7hXbccj17pJPjJ7q4f+89PPW... | [
"4 − 4 = 0",
"5 − 3 = 2",
"5 − 5 = 0",
"5 − 4 = 1"
] | null | 3 |
math | grade-8 | identify-linear-and-nonlinear-functions-tables | false | true | The table shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAFQAAABeCAYAAAC98DOnAAAHWUlEQVR4nO2cbUjTax/Hv2pNIsvQ5bYc0zUpxXwxih6ZZsiN3Kt8YbcFQlZzlVmiyaRMmb0oWgvaEtIkwtJQzolcxKm8g7KWpQil9giB6wlnm1FsMxfkPC8iOZ55ym2/vw+d6wN74fWfv+/Fh+v/MHf5w29/NA9PB6bLPIPBIIUJJYYJJYYJJYYJJYYJJYYJJWZChLrdbigUCqxcuXIi4kYxNDSEEydOQCqV4ty5c17HP3/+DJ1OB4VCgfj4eKxbtw7V1dXweDx+5c0... | [
"nonlinear",
"linear"
] | null | 0 |
science | grade-5 | evaluate-natural-energy-sources | true | false | Below are three examples of using energy from natural resources. Select the use of energy that did not add to air pollution. Hint: Burning a material such as wood, oil, or coal releases chemicals that add to air pollution. A solar heater on the roof of a house warmed water that was used for bathing and cleaning. Wood b... | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAp8AAADOCAYAAAB4pWlzAAEAAElEQVR4nOz96a8sWZbdif32OcfMfLjTm2PKyMihMmsuNqvIAodusptNSP1BAgQJAgR91/+jf0FoCdCHbjVEsYUWCIlszkMVax6ycoyM8c138MHMztlbH84xd/P77nsvMuIVikXaSrzw6+5m5uZmlvBla++1tvzbc7PvLuHYM2HChAkTJkyYMGHCnwsuE/zpCuQimk3Ec8KECRMmTJgwYcKfNy4TiJnZX/SOTJgwYcKECRMmTPhPA2H8RJy8eumX0NTXrPWF8To... | 2 |
math | kindergarten | subtraction-sentences-up-to-10-what-does-the-model-show | false | true | Which subtraction sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAAAyCAYAAAAZUZThAAAPx0lEQVR4nO2daXBc1ZXHf6/3Rd1qLdgtCdnyAjaSjS3b2GYJITUsAcJmTDZgRlSGYb6lKlMkmakMVTPMB3uomgrJB5KZDzBFCBQYCDiJwc6UnUkYwGULObIWYwyyLSR5kdRqSd2v+y13Pjz1/iS1lpZs1/tXuax3+917z7/PPXc5997TkhBCYMGCBVPYFlsACxYuZVgGYsHCFLAMxIKFKXDFG8inn32x2CIUYDYyWTxKh6lkciygHAuOl155kw8Pt3Lj1k20PPrwYos... | [
"5 − 3 = 2",
"4 − 3 = 1",
"4 − 4 = 0",
"4 − 2 = 2"
] | null | 1 |
math | pre-k | more | true | false | Which group has more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAdoAAABeCAYAAACEstXVAAAFfElEQVR4nO3dzW5UZRzH8f+UlwUCbowvF6BeAguvwavwagioLHBjYEOISxJlAQUiJgIBNkQJJIhWE0McI4ZkCpNQKMfFkUBLmc6cOf9znpbPJ2mgHXrmfDOLHyVPy6Cqqmq4EvHrOGJ5NeJpFQBAQzsHEft2RHy4J+K93RGD4eOquj7q+7YAYPs5sD9i591x/c4HuyM+fqteYQCgmeXViDuPIv5aifhlHLEwelo/YGQBYH77dtSbGhHxcDViYfWlBwCA+T3f1Cd... | 0 |
math | grade-2 | compare-clocks | false | true | The clocks show when some friends took out the trash Wednesday evening: Who took out the trash earliest? | "iVBORw0KGgoAAAANSUhEUgAAArIAAACiCAYAAAC9MC4yAAA02klEQVR4nO3de3hTdbr28W/aNA1NSgsU2oJAkYInhJYRROWsDI4jjigoom5RcGbPCFq2juIe2OoLjuzxAMg47+iAg86rgoAnHAUVphwc8QQFT0gLlIK0KRQakvSUtHn/iEQKhTahzYHen+vqRbuystbT2Ns8K+u3fsvg9Xq9SPTyVkLVTqgugKp8378eG9TaodYJdU6oPQLEQGw7iLFCrBVikyAuHcyZYMqE+J6+7w1twv0biUQ/5VIk8iiXZyWDGtkoU1cBrs3g3AD... | [
"Dan",
"Justin",
"Marvin"
] | null | 1 |
math | algebra-2 | match-exponential-functions-and-graphs | true | false | Which graph matches this equation?
\[ y=-4\left(\frac{1}{2}\right)^{x}+4 \] | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAVUAAAE1CAYAAABX+HN0AAAhoklEQVR4nO3dfXQTdb4/8PckTdOntAGatoC0FJBWHluq0KpLLXtRULh3wfWucnQFlD2g7N17ruwe4R5u/WNXcQ9yj15/ig+IrO7iA3I4FMXyIC64tLCUBp+2BcHCAk0foGkLJUmbzO+PkKTpA/RhJjOTvF/ncEjSmfl+0kzenafvdwRRFEWbC/ihDWh1Ax0iiIioj6IEwKQHbo0DUqMBweYUxaMtSpdFRKR9MxKBqFNt3ifDo4GseG/iEhFR37S6geqrQK0LONk... | 0 |
science | grade-3 | read-a-thermometer | false | true | Select the temperature shown by this thermometer. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAGQCAYAAADbbRRJAAC1+UlEQVR4nOydd3hUVfrHv1MyM0lmJh1IgxRaAtIlwZVeZBcrQcUurn1FsO9v1wq4q6ILqKtiAXTtFN1VVwUrKiSuShJIaCEJZFJIz0wm02d+fwz3MuVOS6bn/TxPnpO5c86dcwdy7/d+73vel2exWCwgCIIgCIIgCCIq4Id6AgRBEARBEARB+A8S+ARBEARBEAQRRZDAJwiCIAiCIIgoggQ+QRAEQRAEQUQRJPAJgiAIgiAIIooggU8QBEEQBEEQUQQJfIIgCIIgCIK... | [
"45°C",
"10°C",
"20°C"
] | null | 1 |
math | grade-8 | identify-trapezoids | false | true | Is this polygon a trapezoid? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADlCAYAAABpqIBfAAAUnklEQVR4nO3df5DX9X0n8Nd32V0WWHdZfv9QIYIQf4Qf4VSiQTBpm0zSnrYX55K0l0uj6Y+rrVeraSaTm97kbhrbDjE6vSST2qs2mTbJpYneJU2jTYKFiMbyMxIVQTD8BmFh2V2W5ct+7w/ww48i7MrC+/v9fB6PGWZer51dvk+HcXju15efLVUqlUoAAACDoi51AAAAyBMFGwAABpGCDQAAg0jBBgCAQaRg14pnnono6kqdAgCAc1Cwa8VHPxrR2hrx+7+vaAMAVDE... | [
"no",
"yes"
] | null | 0 |
math | grade-7 | similar-and-congruent-figures | false | true | Are these shapes congruent? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD8CAYAAABNcdMMAABoIElEQVR4nO3dd1yVdfvA8c/hgBymgIqipizBlZorcZSaeyWmJpqLNHA0bGJWv3zSNE3NTMMSZ8NcOXDlzoScICoq4ERFAWXvcX5/IEdJHMCBA4fr/Xr1Uu5zj+t+HjnnOt/7+l5fhVqtViOEEEIIIYTQCgNdByCEEEIIIYQ+kQRbCCGEEEIILZIEWwghhBBCCC2SBFs81tixYzEyMkKlUmFqakrTpk35888/dR2WEEIIIUS5Jgm2eKwzZ87w66+/kp6eTkpKCosWLWL... | [
"no",
"yes"
] | null | 0 |
math | precalculus | solve-a-triangle | false | true | In solving this triangle, which law must you use first? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEhCAYAAABFptdJAAAllUlEQVR4nO3de3RU9b338c9M7swMlyBEkpgLkgQwFkXRClplWX3kebSIxxsiVMVzvJ9SPV7bIrXrKJ5aziMePVVXl1iBKl7xfqpdnGMfiUuFioKQREgIJKkhBMzMhJmEzH7+wEwIJEMuM7P3nnm/1nKtOnuc+bJWlQ8738/+OQzDMAQAAAAgKpxmDwAAAAAkEgI2AAAAEEUEbACAJRQWFsrhcMjhcMjpdGrkyJGaPXu2Nm/ebPZoADAgBGwAgOkaGhpUV1enZ555RoZ... | [
"Law of Sines",
"Law of Cosines"
] | null | 0 |
science | grade-3 | identify-rocks-using-properties | true | false | Select the one substance that is not a rock. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAANcAAAEYCAYAAADPtGNgAADm+ElEQVR4nOz9V5MkWZqeCT7nKFc1TtycBs9IVllV3VXVqJ5uoGfQQ0QgMyO70jLYld1/sTd7sX9n7mZvRiCYAdCLBgeaFKoqWWVmRGSEh3N346acnbMX6hEZmZWZzSob2dX+ipiomRpTUzuvfud85P3En621fj2AtsENbnCDvwLCGj6J4byAvgm/22v2yxti3eAGfz20DXg9aO5H9Wf75Q2xbnCDvz5e8KjUn+2T/2UO5QY3+PXHDblucINvCDfkusENviHckOs... | 2 |
science | grade-7 | use-scientific-names-to-classify-organisms | true | true | This organism is a yellow-footed gull. Its scientific name is Larus livens. Select the organism in the same genus as the yellow-footed gull. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAC+zUlEQVR4nOydd5glRbn/P1XdJ01Om3Nml2XJGRZJCoiAikowAGbEhBdFr+GHWfEqiqhXUVHRC6IiAqKISNglLOzCJjawOe9ODid3V/3+6NNn+vT0mVlk1HuxPs9znpnTobq6+pyZb731rbeE1lo7joNSCoPBYDAYDAaDwfD3IaXEtu1/dTWQRtwbDAaDwWAwGAwvH6UUjuP8q6uBNOLeYDAYDAaDwWAYHf43aGv5r66AwWAwGAwGg8FgGD2MwDcYDAaDwWAwGF5BGIF... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6IAAADMCAYAAABp7h4wAAEAAElEQVR4nOydd5xlRZn+v2/VuaHT5AAzMAwMzJAEQYKK4AImEMVVVhEMoOuKmHFRdA2LWXFNqOy6qOiCCVcWc2D5KUlEgjPkNMQhDBO7p7tvOFX1+6Oqzj339O2eRmZldc+j/Zm+J9SpU+fcpp56nvd9xTnn0jTFWkuJEiVKlChRokSJEiX+NCilSJLkye4GIvJkd6FEia1ClSS0RIkSJUqUKFGiRIknDmstaZo+2d0oUeIvAklJQkuUKFGiRIkSJUqU2Db43zC... | 0 |
engineer | grade-6 | identify-control-and-experimental-groups | false | true | In this experiment, which were part of an experimental group? The passage below describes an experiment. Jill was using steel to make rusted sculptures. After building each sculpture, she caused it to rust by placing it in salt water for eight hours. Jill wondered if steel would rust faster if she added vinegar to the ... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAELCAYAAACyM7+LAAEAAElEQVR4nOz92a9tWXbeif1ms7rdnTZu3BsRNzKDTJJFkWKKZZGlkgyXZBsWypJhw/aDLcgG6qGe9C8YfvCTH2w9FQy49B+UgUJBZZUtS4BNNYBKnZXJLtllExk3bn+63axmdn4Yc669T5CUbJWkoAEt4NzmdHvttdYcc4xvfN831F/5K38l8W+Pf3v82+PfHv9/dPzVv/pXv5bXtQD/+P/+f8N7T3ITVhsuztacbdZYbZimgd1hz+Qdo4sM3uFiYkoBFxI+Bhpt0Sr... | [
"the steel squares soaked in salt water and vinegar",
"the steel squares soaked in salt water"
] | null | 0 |
math | grade-5 | points-lines-line-segments-rays-and-angles | false | true | What is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACOCAYAAAALm3/GAAAWEklEQVR4nO3dW2yU953G8Wd8NjC2AXOyDY7H9rJGUAgVYEi9OJgSbb0bp4pXKSoQyAXcFKVSuNmVkmw2V1VCC8relJWICdCgAhXO1kQldmLiBAxsA14jI5aZMT5ysDH2DPg0h3cvAtMQTELMeN45fD+SJfSfw/vY4uKZv/7zey2GYRgCAAAAEBRxZgcAAAAAogkFGwAAAAgiCjYAAAAQRBRsAAAAIIgo2DBFY2Ojtm3bpry8vMDP+vXr1dnZaXY0AACAJ0LBRsjt2LF... | [
"a line",
"a ray",
"an angle",
"a line segment"
] | null | 2 |
math | grade-6 | changes-in-mean-median-mode-and-range | false | true | Look at this set of 8 numbers: How would the mode change if the number 7 replaced one of the 9's in the set? | "iVBORw0KGgoAAAANSUhEUgAAAPUAAAAkCAYAAABR03zvAAAF1UlEQVR4nO3daWwUdRjH8e/M7Na2y1F6UJCjS4FayqWRs+XUIoRLNBr1jZpGxSgBIfEIhkTRqK9MQCNBfSeKcslRjRzKWayoUKrFAqW0WCmVaumWdrfb3R1fLCXdtr5i/t0w+3xe/jeZ3ybP88zszM7saqZpmgD+UIiWQJCQaWIihLgd6ICmabgcBk5dB0AzTdNsCQTxBoPRfXdCiFuSYBgkOgz0tpApAy2EDXiDQdpCJro3GIj2exFCWMQbDKAHQnIGLYRdBEImuoy... | [
"increase",
"no change",
"decrease"
] | null | 2 |
math | pre-k | fewer-and-more-compare-by-matching | true | false | Which group has more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAASYAAACGCAYAAABwryeAAAAI10lEQVR4nO3d72+VZx3H8c/pz422dKQT6CgpWGCAgWXBrGodG7DFR3uCMcsSE6PbsiwOxSdq4h/gok/8ER1LFo2JiduyGbOZmBhAwDEVEX/wgBaKS8fQUwHL+su1trt9cHlGgQIt3Nf3+t4971dy0jaF63vdnwOf+/ScO6elLMuy8qTUPy6NTEtTmQDAVF1JaqmV1i6SljVIpfJElh0ZTr0tAAi6F0t1p8bDF+0N0t1NobUAwNLItNQ3Jv1zUjo5LtUMT4VvUEo... | 1 |
math | pre-k | triangles | true | false | Which shape is a triangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAIUAAACVCAYAAAB2DDmnAAACS0lEQVR4nO3VPY4cZRRA0dc9P4F/sCMQCwAvAEtehNfLJixYgLFzhgxm7JE8TKsISpaQbuageuw+J6rSF7wnfVdVu2VZlqu7mfe3MzeHmftlODHnu5mnZzM/PZr54XJmd/VpWd5cH3stHopX382cv7tdX368nHnxeC2G03JzmHn7cebPu5k/bmf21/frgSBO19Oz9f5nZj4cZvaH/x1wuj7f/7/LzP64q/AQiYIQBSEKQhSEKAhREKIgREGcbznst79/3XLcN+P... | 2 |
math | grade-1 | compare-objects-length-and-height | true | false |
Which streetlamp is the tallest? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAGgAAADYCAYAAAAH1qbUAAATb0lEQVR4nO2de3RdVZ2Av/O47/e9SdP0nTZp2tIXlbbQ8rAFHzBURRxEfCAO4wJndMbR0VlL1/gAcTmjArPUxVhHFESK0lGR4VEoFaTvB7aFljZN0jZJmzRpkuZ1n+ec+eMmacLNTdI06d33ur+1WOSes889e9+vv7332fucsxXLsqzGBBzrgU4DUhaSHKIr4NOgwg0ldlAa45a1qyPX2ZIMxUo/6FU96Q+ldqj0pO1JckenAUe64XQCjvaA2pFK75ByxMCnpV0... | 2 |
math | pre-k | tall-and-short | true | false |
Which rocket is taller? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAGgAAADoCAYAAAADrKF5AAALtElEQVR4nO2dbYxU1RmAn3PvnRn2k69FsiwQBAErHyqxUKyaJgZN05q0VtukJtomTYzENP5pWqrtj9pUf5o0remPYmrSphqgicqP7mLSoI27xBCEMIMg0MIuoAtFZhbWXXbn9MfMMN/s7O7s3veM7/OHvefevbyzT8457zn3zjnGWmsvjMIn1yA1DmMWJUQCA20+rG6GxVEwF0asPZAMOyylElvaIThxLXPQGYW1LRl7SnikxuHjq3B+FI5fAy85ljmhcmTQ5md... | 1 |
math | grade-7 | classify-quadrilaterals | false | true | What name best describes this shape? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACkCAYAAACtrFmWAAAZuElEQVR4nO3de3SV9YHu8e/eCblAIFwSrgKJIFRRsFZRa6lAL1jRQh1svVRbbWs9Y2tnOa51jp3WobZL25F2derYZa1VhrZeCrZ4ARWsQdGDVVBBELnEhHAJJCEhJCQk2dnv+YMTHAWUy07evXe+n7X8JwnZD/71+Pr7vU8kCIIASZIkSQkRDTuAJEmSlE4s2JIkSVICWbAlSZKkBLJgS5IkSQlkwZYkSZISyIItSZIkJZAFW5IkSUogC7YkSZKUQJlhB5ASraW9iaX... | [
"parallelogram",
"rhombus",
"trapezoid",
"square"
] | null | 2 |
science | grade-8 | compare-thermal-energy-transfers | false | true | Two identical aquariums were next to an open window. One aquarium had a plastic cover on it, and the other was uncovered. This table shows how the temperature of each aquarium changed over 1.5hours. During this time, thermal energy was transferred from ____ to ____. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAABfCAYAAACdpLOcAAAkLUlEQVR4nO3deVgT1/4/8HcCBBJAUBFbrwspVYIKXOuFgvW6gAvlUltRQcRa69dqxbq1KrZuKCrKz/qrtr32Vv3WYlWsUG2rtLVq3RfwouJWd+teRUFCWAIk3z8o0ZgAkwQE4/v1PD4+zJzMOXMyn8knZ85MRF1m52pBZOXWvCfDm58V1ncziJ5qjCMiYfbHu9Z3E+gZJ67vBhARERERUe1hgk9EREREZEWY4BMRERERWREm+EREREREVoQJPhERERGRFWGCT0RERER... | [
"each aquarium . . . the surroundings",
"the surroundings . . . each aquarium"
] | null | 0 |
math | grade-1 | square-corners | true | false | Which shape has 4 square corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAACd0lEQVR4nO3UPW5USRSA0fvaPwGDmQw0C5iZJbAbEvZFwHLYAQM5JrWNJTxuPYInJHK3vpaac6IqlXR1g0+1rOu6Xj/MfL6fud3PPK4DT3a+zFydzfz9bObV5cxy/X1dP9wcey1O2esXM+ef7rfLX5cz//6xVQhPdbuf+fht5svDzH/3M7ubx+1BZBzS1dnW1MzM3X5mt//lAQ7pZ1P/rzO7467C70JoJIRGQmgkhEZCaCSERkJoJIRGQmgkhEZCaCSERkJoJIR... | 0 |
math | precalculus | determine-continuity-using-graphs | false | true | Is f(x) continuous at x=9? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABxX0lEQVR4nO3deXxU9b0//tdkZrIvk40kBBNkCwaTQCBg2BEqVBQFq9DWrdfai6217fd729tvb6/f29avP29b26tVa22tS3epuAAGBFlNhECAQMIWI2QhTJJJZpLZz8yc8/vjMDHDmsD5MBnyej4eUWaS884758ycec1nPuccnaIoCoiIiIiISBNR4W6AiIiIiOh6woBNRERERKQhBmwiIiIiIg0xYBNRiK1bt2L06NFYunQpAODOO+/EO++8c8Gf9fl8uOWWW7B79+5... | [
"no",
"yes"
] | null | 0 |
math | grade-6 | similar-and-congruent-figures | false | true | How are these figures related? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAB4CAYAAADIUIXCAAATT0lEQVR4nO3de3SU9YHG8SczQ8gFEsIlNggGXERALgmapQY4iBpCIkXZCoeV0AUNrawWqMCCxXIrCkoFFFtjiQnuJlu7KWcJYBoE1JwKLZtKUNGkkNWJobEGQpJJyI1ksn9UeupWSgZm5jcz+X7+hMz7PufoHw+/PO87QZ2dnZ0CAAAA4BYW0wEAAACAQELBBgAAANyIgg0AAAC4EQUbAAAAcCMKNgAAAOBGFGwAAADAjSjYAAAAgBtRsAEAAAA3omADV7Bnzx4tXrx... | [
"similar but not congruent",
"neither similar nor congruent",
"congruent"
] | null | 1 |
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 | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAWMklEQVR4nO3d2XcUZ37G8W9Vr+rWBkhCaAGxGoxlYGQbG+Ml2JMzM85sIWQdZ27iXM3JRZKTu+QPyF0uc3JOTpKZJGfGHo/HM8nYMdhjs8sDGGwMCJDQvgtJrW71WpWLQhJCMsijpqpbej7n+GC93ep+W2/X0/X+qt4uw7ZteyANNxIQy0HWRkQkL/wGlPlgewTWB8EYSNl266TX3RKRlW5/OfivJ5wfNgThkaiTRiIi+RDLwbU49KehLQHmZNa5QWEjIvlW5nO... | 2 |
science | grade-3 | identify-solids-liquids-and-gases | true | false | Select the solid. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AABdxUlEQVR4nO29eZBmZ33f+3me5yzv1m9vM909Pat2CZBYZBBCAiEkNmMbCNgxFbscyr4ulxPH9q0iSVUqRZb7R27l+iZ18Q1ZXJhck4CMsQ02YGIcVgFa0C6hbTT72tPT67ud5fndP57nnPd9e3pGI81opuX0b+qd7j7v2c/3/PZFPbAkcl0dRgybtEmXlFZyeKYFxxIYD+D2MbdcbwJyky4XjRi4ru5+X837y/UmIDfpclKBv1T6y/TlOZVN2qSz0yYoN2nD0SY... | 1 |
math | calculus | determine-one-sided-continuity-using-graphs | false | true | Is f(x) continuous from the left at x= – 7? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABwd0lEQVR4nO3de3xU9Z0//tfcM5nJ/U4wAUTQIEHDTRAUi6tWrRWsxfbXWvtz2+q2te1uu7u/bre/XqzfdlvbX111W/fbrdp2v119FLWCAVEQaKhEIgQSEDBA7peZZGYylzPnMuf8/ogTGQiQwPkwGfJ6Ph4+MDNzXnnnfGbOvOcznzljMQzDABERERERmcKa7gKIiIiIiC4lbLCJiIiIiEzEBpuIiIiIyERssIkoxdatWzFjxgzccccdAICPfexjeOmll8a8raqquO6... | [
"yes",
"no"
] | null | 0 |
math | calculus | describe-linear-and-exponential-growth-and-decay | false | true | How does f(t) change over the interval from t=3 to t=5? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABsMklEQVR4nO3de2BU9b0u/GfNNfdMbiQhmnATNJhAQgINEIENFStqC9qN7btr7ban1VZte97qsa323W05bneteuqt3Z5tFffpPrZuUTdgQBQUGiqBCIEECjEkIQnkMmSSzH3NmrXeP4YJhOsMrB+TSZ7PP5pJ5smXtWbWPPPLmhlJ0zQNRERERESkC0OsByAiIiIiGktYsImIiIiIdMSCTURERESkIxZsIhph69atmDRpElasWAEAuP322/HOO+8AAE6cOIHNmzfj7bf... | [
"f(t) decreases by a factor of 2",
"f(t) increases by 2",
"f(t) decreases by 2",
"f(t) decreases by 1"
] | null | 2 |
math | grade-2 | which-picture-shows-more-up-to-5-dollars | true | false |
Which is more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAlYAAAE4CAYAAACZs72oAAEAAElEQVR4nOz9PWwky7bvif3ezMMgUsIIEcAAyvQ6DEFIelkyBNazuo5XB+OQzyKPtet4bK/pNY912ZZIb9M73NYhrSGNGezybrU1VYAAVXqd0AcU21ImMANEYEaaDI3m4cpYkVlF7u599nl333ffbdQCuiuZGRkRGZ8r1vqvtf7VP/zDP/xD9z/D/+N/gv/x38H/8g8c6EAHOtCBDnSgAx3oV9C//lfwn/+n8L/7X8H/9j+Df9X9f//hH/7P/8M/d7UOdKADHeh... | 1 |
science | grade-4 | animal-adaptations-beaks-mouths-and-necks | true | true | Tigers are carnivores, or meat eaters. They eat large mammals like deer. The tiger's mouth is adapted to tear through meat. Which animal's mouth is also adapted to tear through meat? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOy9eZwcVbn//z7nVFUv092zr8lknawEQhIIa4Cwhi0gouwqiKjIItsFRLwi3uv3iooQURBEQPGKoCirKFsEIgZCyArZM0kmsy8903tVnfP7ozojEZCIAX56+/16zSvp7uqqc6pOdT3nOZ/neYQxxnieh9aaEiVKlChRokSJEiVK/GsipcSyLITruqZk3JcoUaJEiRIlSpQo8a+PlBJZMu5LlChRokSJEiVKlPj3QGuN/KgbUaJEiRIlSpQoUaJEid1HycA... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOy9d7xlVX33/15r7XL6ObfXudPuVAaGMjQpgigCAhJEscZgjT6IQSW2YCSaJ0+CxiCxJ1Fsj8aCDVTEggIiHWYYps/cub3fc0/fZa3fH/vcw4xAQEV5kt95v168mLvPLmvvvfY5+/OtwhhjgiBAa02TJk2aNGnSpEmTJk3+eyKlxLIshBDP9lCaNPkfiWwK5yZNmjRp0qRJkyZN/vujtSYIgmd7GE2a/I9FNoVzkyZNmjRp0qRJkyb/M2i+2zdp8sd... | 0 |
math | grade-7 | transversals-of-parallel-lines-name-angle-pairs | false | true | \line{HJ} and \line{KM} are parallel lines. Which angles are supplementary angles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADSCAYAAABw17dKAAAhCklEQVR4nO3df0xd9eH/8de5vS1NWC2u8UfplB8FMfyQe4UqbNMLa3WwOGyXOScuXpq5uGhZb92cWTYpnYn74SJXwWWxcVwWabd0C7RxARULrIu3ob2UFlFrkHKdyx1mysUO7V2hfP7wW76rhf7iwrk/no/k/MF9w3m/pD3py5P3eR9jampqSgAAAADCwmJ2AAAAACCWULABAACAMKJgAwAAAGFEwQYAAADCaMELdm1trbq6uhZkrlOnTumFF17QV7/6VSUnJyshIUH... | [
"\\angle{HIL} and \\angle{KLN}",
"\\angle{HIL} and \\angle{JIL}",
"\\angle{HIL} and \\angle{JIG}",
"\\angle{HIL} and \\angle{MLI}"
] | null | 1 |
math | kindergarten | count-money-pennies-and-nickels | false | true | How much money is there? | "iVBORw0KGgoAAAANSUhEUgAAAMIAAACICAYAAAC1IjQ7AAB2t0lEQVR4nOy9d5icZ3n/+3nr9LY726u2alVWvRdbtnEvGNvUAIeekBxIICfk/JKQ/Ej55UpyAgESTEvoBlOMO+62JKv3uquVtvc2O33mreeP2XktgQxuSCbR97p0abWrnXmfZ577+9z9FmzbtrmCK/gfDvFyP8AVXMGbAVcE4QqugCuCcAVXAFwRhCu4AgDky/0Arwe2ZZLNZEgnE6SSCeJzc2TmZkjn8ohAIFJCIFyK3+fD7fMRCoVRVBVBEEAQLvfjv2lgWRamaWK... | [
"13¢",
"8¢",
"11¢"
] | null | 0 |
math | grade-2 | fractions-of-a-group | false | true | What fraction of the shapes are triangles? | "iVBORw0KGgoAAAANSUhEUgAAATgAAADeCAYAAACpFRxBAAAR4klEQVR4nO3dz28UZ57H8Y8x7raTgAyX0UaIcIBoLoGRVsKrkZBhL5v4gLThivgHELnkNApokmuUXEbKKde95g/Yy0i5rKKdy3IbIiQbYcfYMe5God0/q2sPptvtYLe/XfU8VU9Vv183MnT76Y803y78+XbXTBzHsQCghE7lfQAA8IUBB6C0GHAASosBB6C0Tud9AOA4//nfD/TT1uO8jzH05z/8ST/8x9/yPsZbyOl4XMEhWCH9n1aS/mfr//I+wpHI6XhcwSF4//7... | [
"1/7",
"2/7",
"10/12",
"5/7"
] | null | 2 |
math | algebra-2 | domain-and-range-of-absolute-value-functions-graphs | false | true | What are the domain and range of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABkfklEQVR4nO39fXhU933n/79GM6N7CQkJJAxIGLCxwRIYGzB3Ni6u7cSJE0hSnLRJnHWbOq2T3VzXdr/59WqzbS+vN9e2aa9mk2zqbjZ29pt807ghTg0WBBsMGGJkZBCWjI0sg5DAur+b+zM35/cHkSpxOwPno9FIz8d15Yo16Lz01jkzZ15zdOaMy7ZtWwAAAAAckZXuAQAAAICphIINAAAAOIiCDQAAADiIgg1gnLlz5+rw4cOjX58+fVqzZs1SW1tbGqcCACBzULA... | [
"domain: $\\{x \\mid x \\geq 1\\}$, range: $\\{y \\mid y \\geq-9\\}$",
"domain: $\\{x \\mid x \\geq 1\\}$, range: $\\{y \\mid y>1\\}$",
"domain: all real numbers, range: $\\{y \\mid y \\geq-9\\}$",
"domain: all real numbers, range: $\\{y \\mid y>1\\}$"
] | null | 2 |
math | grade-4 | estimate-angle-measurements | false | true | What is the measure of this angle? Choose the best estimate. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAA/CAYAAADaDb8WAAAEbUlEQVR4nO3dO2xVBRzH8f9FIgL1yiOS0MIiiZpIXNqGqSaQxrG3dTKm0MRFQyROakXcjI+4OKBx0chDUxagDA6KYIIxgcIGoQ6NTjXggNyLaRc8Dg2VlkILtPe8Pp+puWe4v9zpe07OOa0kSZIEAACwKJalPaBZRs6OxaEDZ9KeAQBAwS1Pe8BSqtcnYui7X+PA1z9Hoz4Zn+0fSHsSAAAFV8jAHr08Ht8ePBPDx85Pf1Z9YmXs6N6a4ioAAMqgUIE9fHQkDh/8JX4... | [
"120°",
"150°",
"45°",
"90°"
] | null | 2 |
engineer | grade-7 | evaluate-tests-of-engineering-design-solutions | false | true | Which of the following could Luke's test show? Luke was concerned about drivers speeding on his street. He wondered if either a speed bump or a traffic sign would make drivers slow down. Before asking the local government to install a permanent solution, he decided to try a prototype sign. Luke made a sign out of cardb... | "iVBORw0KGgoAAAANSUhEUgAAAQYAAAFOCAYAAABkPrM9AAEAAElEQVR4nOz9efhlWV3fi7/Wns58znceau6hqnpGCAIiKMooiASNSkDFMZibOCDc3Of6hHgdrsar0USDN4/JT25AwEQNKogikwi03U1PtN1dXdU1V33rO5953MNavz/WXuvsc+pbVc2U5j7PXfV8a5+z99nzWp/1Gd6f90f8i3/xLxT/X/v/2v/Xvi7bb/3Wbz0r5/UAfuodb0cIgRACx3EmlqYJIXBdF8dxcBxn4iCu1N+VUiilkFLazwBJklz3IhwXXNfF8zxc18V... | [
"whether a speed bump or a sign was more effective in slowing drivers down",
"whether a temporary cardboard sign or a permanent metal sign affected more drivers",
"whether more cars obeyed the speed limit when there was a traffic sign"
] | null | 2 |
math | algebra-1 | compare-linear-functions-tables-graphs-and-equations | false | true | Function A and Function B are linear functions. Which statement is true? | "iVBORw0KGgoAAAANSUhEUgAAARAAAACZCAYAAADnwmWxAAAax0lEQVR4nO3deVxU9f7H8dcgOyKyCkqKwg0tU1QSrcQFzZTSTLBcyLVb5s+Fq3kzNbVscSsxy+qWmqaWS2IZJddCoAVow+2KpqFpyEXcYBBEhu/vDy6TyOJwBAbi83w8eDzkzFk+M57z5ny/58z56pRSCiGE0MDC3AUIIRouCRAhhGYSIEIIzUwKEDc3N3Q6XaU/qamptVym6davX49OpyMgIKDOtx0fH2/8TLp27Vrn228MDh06VOW+2Lx5c3OXWMa4cePQ6XTMmDG... | [
"The y-value of Function A when x=1 is less than the y-value of Function B when x=1.",
"The y-value of Function A when x=1 is greater than the y-value of Function B when x=1."
] | null | 1 |
engineer | grade-6 | identify-the-experimental-question | false | true | Identify the question that Pam's experiment can best answer. The passage below describes an experiment. Read the passage and then follow the instructions below. Pam glued lids onto 16 cardboard shoe boxes of equal size. She painted eight of the boxes black and eight of the boxes white. Pam made a small hole in the side... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAEICAYAAAA0p80lAACZrUlEQVR4nO39Z6wt13keAD9rZnbv5fRze2cTi0WJElUsx5bkIjuWJScO4oKoOLEkGBAQBMiPfPCfBAhgJI4AA0k+JAYSuMk2ZUuUP9mSbRkRSYmUKJG8JG8/7Z5+zu5t2vdj9rv2O+vMPntf3nPJew/nATZ2m7pmrWe9fYnf+q3fchEiRIgQ9xB+93d/9y05rwEAX/rSl96Sk4cIESLEreJzn/vcW3Zu7S07c4gQIULcYwgJM0SIECHGREiYIUKECDEmQsIMESJEiDE... | [
"Do the temperatures inside boxes depend on the sizes of the boxes?",
"Do the insides of white boxes get hotter than the insides of black boxes when the boxes are left in the sun?"
] | null | 1 |
science | grade-4 | identify-minerals-using-properties | true | false | Select the one substance that is not a mineral. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAANcAAAEGCAYAAAD2aACLAACLTElEQVR4nO29d7hk6V3f+XlPqlx1c+jcPd3TPdMTpBlpAojRmAGEAQGPYSWbtF7A4LUwcQVaRNA+aJH9wHp5jBE2YIIQaY2xBEg2MmMrj0aTemL3dL63b06V00nv/vHWOfdUddWte7v7Trda9e2nuuqeHN7f+8u/n3imKOXxFGR0BhhggGtA2YPXq7Bow7ABbxtSy7UBYQ0wwPUho8PxlPpd8TaXawPCGmCA60dAR47cXGZ027BUKm15ICnlluv7QdO069q/H4Q... | 2 |
math | kindergarten | flat-and-solid-shapes | true | false | Which shape is solid? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMwAAADMCAYAAAA/IkzyAAAJCElEQVR4nO3d324U1wHH8d/MenYXe+z1GMnZSkZaCQq2cG0ZMLZxLvgjRaAKJEAhT9Gn6bP0JfICVZpeViq5hQQ1FGt7MZCCwfGePTNz/n0/V0FEyhHwza7He35k0+l0+vKt9M830usT6d1UAN5byKTlnvTHRemrvpS9/HU6/f6V62MB/jtYkRZ+fFP/4A996dpSXROA2usT6YdfpH+/lf7xRspfvat/gliAzy336jYk6ecTKT/56CcAfO5DG/+dSrnbowBhIRj... | 1 |
math | grade-4 | acute-right-obtuse-and-straight-angles | false | true | Is this angle acute, right, obtuse, or straight? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABwCAYAAAAkAwevAAAOPklEQVR4nO3de1CU973H8c+KYgQTCYQmG1CkJDjiDTRTTSdNIRdNUSKSo3SSak3M1Fi1eupkzFGPVdObzUkk0XjpObEqyZwxZBQVM206JHhMg3RULgGb9YZRhBjELAkLulz2/IGLN5abyz678H79pevyPB/86zPf+T6/x+RwOBwCAAAA4BZ9jA4AAAAA9CQUbAAAAMCNKNhulFmQqbhX42Saa9LgpYOVWZBpdCQAAAB4mIkdbPcoOFeguN/G3fJ56e9LNTRkqOcDAQA... | [
"acute",
"obtuse",
"straight",
"right"
] | null | 0 |
math | grade-5 | is-it-a-polygon | false | true | Is this a polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD6CAYAAACbKDARAAAKd0lEQVR4nO3dvY4kVx3G4X/vrGY9OMQI4wi0QIq0Jgd/iMDiKuCO4FoIkBAfObMXALsCycGsBbHH05JdDnq9nhn3zFR1n1Pn63mSTlqqNynpp1L16c00TVMAAABJPCo9AAAAeiKwAQAgIYENAAAJCWwAAEhIYAMAQEICGwAAEhLYAACQkMAGAICEBPZItq/iy0//UHoFAEDXHpcewEq2F3F1/lFMly8jTt6Ok/d+X3oRAECXBPYApqtXsX2+i+vNWz+JR+/8tvQkAIB... | [
"no",
"yes"
] | null | 0 |
math | kindergarten | one-more-with-pictures-up-to-5 | true | true | Count the party hats in this group. Which group has one more than the group you counted? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABmCAYAAADxjOYpAABAm0lEQVR4nO3dd3gc1b3/8ffM7krbd9V77y6Su2UMxg1IoQdy04Bwk/zuvSFAIOGm95ue3BTSfgmEmkaCjYlJADcwxr3LRbJ6W3WttF3aMr8/1giMTcovEpLF9/U8PA/anZ05M+Pvo4/OnjlH0TRNQwghhBBCCDEp1OlugBBCCCGEELOJBGwhhBBCCCEmkQRsIYQQQgghJpEEbCGEEEIIISaRBGwhhBBCCCEmkQRsIYQQQgghJpEEbCGEEEIIISaRBGwhhBBCCCEmkQR... | null | [
"iVBORw0KGgoAAAANSUhEUgAABIYAAAB+CAYAAABRYRpnAACBqUlEQVR4nOzddYBc5b3/8fcZ95l1d9/IxoUIMaQtDuXWsMrv9pa2FOpQb6k7pe29LUVrlJIEaSGeQIhnN8m6++6sjcuOnd8fk2xYEiBtk+xmeV7/QGbOnDmyn91zvucRCZARBEEQBEEQBOG8kGWZwRC0+sEThYi42hYEQRCmEZUEZiWUGCBNAxKiMCQIgiAIgiAI583guMxB91RvhSAIgiC8vaUWUE31RgiCIAiCIAjCTNLij/83QwNlxvhTWUEQBEGYLjxRaPL... | 0 |
math | pre-k | fewer-and-more-compare-by-matching | true | false | Which group has more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHIAAACGCAYAAAAB3t5yAAAegElEQVR4nO2daYwk12GYv1dHV9/X9Bw9PffM7s5es1wuuUuueEihZZmKRNGKZSSRZBswAsRJbCMBnCCwg8SIncs5ECGCEVuOY0E2HFnRHcvWQVJLUVruLrn37szO1XNPz/Td1XdXvfzo2Utc0iLZwyUb/QGDqerqrvf6ffXOevVaSCnlZg3mSlCwoCHp8B5AE+BTYY8beh0gNqtSnsnf72h1eDuc8IM2W2ruRB2wz9O03OHdT8GCmSJs1OBGCZR8o3mgI/G9hU9... | 1 |
science | grade-2 | natural-resources | true | false | Which of these pictures shows a natural resource? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAV4AAAElCAYAAACszooYAAEAAElEQVR4nOz9S5Mku5ImiH0KwNwjMvOcc8+9NTXdnOb0QyjSQgoXs+CCC3LJ/8M11/x3XFEoQpFedE9PTz26qu7rnMxwdzMDoFzoAzBzM3ePiMx7bjWvpUS6u8FgBsCAD58qVBX0//qJ+d9/BL6L+Mvxl+Mvx1+Ovxxf8fhcgP/wAvz9BPyYgP/Lr+R8+Avo/uX4y/GX4y/Htzm+i8C//yjfv5R2PvwFdP9y/OX4y/GX49sdhrEzt3Np68K//p/+b5hz9t9EtPh... | 3 |
science | grade-4 | identify-rocks-using-properties | true | false | Select the one substance that is not a rock. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAANcAAAEGCAYAAAD2aACLAACWs0lEQVR4nOz92ZNl6ZXlh/3OPNx5vj6HxxyZkRMyC0BNjapqsqs5PkgyNvWgP6HNKNI0mLWZXsUHydQPohklo5FGUiZKapHN7laxhxpQQFWhgExkJjIz5snDZ/c7j2ce9PCdeyIyC6hCARkooOHbzO16XPfw8Bv37PPtvfZaa0sfTNP0RgFKChdxERfxE8Q8hodLOA2gpsJvVMXz8kViXcRF/HRRUuBGQXy+iF88L18k1kVcxE8fqzwK0xfPyX8zv8pFXMS//nG... | 2 |
science | grade-4 | compare-properties-of-materials | true | false | Which would stretch the most? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AABBG0lEQVR4nO29d5wjd33//5wiaUZd2t7udm+v+fqd74ztsw34bAzYJgRjTAukAQb8C18nIQkhIUAa/Ag/AoTyzdekmM7XxhTbxMbt3H0u1/vtta23q91VrzPz+f0xkrZIa5/rrdZ6PR57Os2MRqPRS+/Pu7+lp2NCrPCAT6GOOl5TJEw4nILhPIRUuCRob5frhKzjXMGnwAqP/f+kObVdrhOyjnOJEv8KYmqbfG4upY465kadlHXMO9RJWce8Q52Udcw71ElZx7x... | 1 |
science | grade-8 | use-punnett-squares-to-calculate-probabilities-of-offspring-types | false | true | In a group of American curl cats, some individuals have curled ears and others have straight ears. In this group, the gene for the ear type trait has two alleles. The allele for curled ears (E) is dominant over the allele for straight ears (e). This Punnett square shows a cross between two American curl cats. What is t... | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAD6CAYAAADUdTPBAAAZJElEQVR4nO3de3BU5cHH8d9udnPZTSBkEyKRQAg2RVusQsDSVqhGGCi2HWkpVeutguMgtUO144z18o8yZeYtBW07jEPFS+0gpS3aUYZaQjUOYozEK4qJEAwJSciNJJtk7+8fwJqQNBc4sMuz38+MM5vlXB72kZkvD2fPsUUikYgAAAAAGMEe6wEAAAAAsA6BDwAAABiEwAcAAAAMQuADAAAABiHwAQAAAIMQ+AAAAIBBCHwAAADAIAQ+AAAAYBACHwAAADAIgQ8AAAA... | [
"1/4",
"2/4",
"0/4",
"3/4"
] | null | 1 |
math | grade-1 | find-the-next-shape-in-a-pattern | true | true | What shape comes next? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADhCAYAAAC9ZMGZAAAaV0lEQVR4nO3de5BkV2Hf8d99dff0zM7M7orZl9AKrwQo4REZJFFGQiJYslTYRuJR4GAIigmOFYFdJqnELnAKRAwunHJhg8tQxnaVbfmVCL8KPcpOoqAqQALDahFSRbsqPXaH1T5mdmemu6dv34f/GLW0WnZmu3v63nvuud9Plf5T9z2/c87s/PrOvbedNE1TAQAAALCCW/QAAAAAAIwPBR8AAACwCAUfAAAAsAgFHwAAALAIBR8AAACwCAUfAAAAsAgFHwAAALAIBR8... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAz4AAADhCAYAAAAJS2C/AAAf4UlEQVR4nO3da5BkZ33f8d+5dff0zPTM7kizO7uSVrASsAmgCCGJChICA7IUBYO4xNhcDDERAQOmIK4kLnAKQxlclMtFGaUCFeIXYBEcLEyc0q0wsSxVISSMWC1CqkirWkm7o9VeZnZnprunzzUvRr1arXZ2Z6bP5Tmnv58qvTDlPuf/f55np/vX55ynrSRJEgEAAACoBMuyii7BSHbRBQAAAABA1gg+AAAAACqP4AMAAACg8gg+AAAAACqP4AMAAACg8gg+AAA... | 1 |
math | grade-3 | read-a-thermometer | false | true | What is the temperature? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAjxUlEQVR4nO3dbZBT153n8V9L3WBsiW7y4PUldmIv07IdYwPC9vgpre6pndqMhWN7vOPWbOKMdyOnAsk43fEMeRhjA00ezKynqdnEToxssEm2RE0lkAWRzGYmoE7scR64DRmPH6QiYBxzCTGm4QqwedK+IMjdSOqW1FIfEX0/VbeKPveec/969+PUuec0ZbPZrAAAAABURXOhxm3btmloaEjbBgc1dPDgRNdUdzo7O9XW1qbZs2ebLgUAAAB1rmn4DPbq1avVt3ix9g8... | [
"90°F",
"85°F",
"75°F",
"95°F"
] | null | 1 |
math | grade-1 | interpret-bar-graphs-ii | false | true | Lena asked eleven friends what they ate for breakfast. She made a bar graph of the results: Did more people have muffins or donuts for breakfast? | "iVBORw0KGgoAAAANSUhEUgAAAfQAAAFfCAYAAAC4DT6nAACVO0lEQVR4nOzdd5xddZ3/8dfp57a50zMz6SRAQgmBAEEQDSiiYkF0VSwrikqx61pW2XVdXXXdVUFFlFXBhii6wA+sKAYQIUggJKYQSnpmkim3n15+f9wwJEtLn8nweT4eeWRuPZ9zMrnv+/2e7/d7lDRNU4QQQghxSFPHugAhhBBC7DsJdCGEEGICkEAXQgghJgAJdCGEEGICkEAXQgghJgAJdCGEEGICkEAXQgghJgAJdCGEEGICkEAXQgghJgAJdCGEEGICkEAXQgg... | [
" donuts",
" muffins"
] | null | 1 |
math | algebra-1 | compare-linear-functions-tables-graphs-and-equations | false | true | Function A and Function B are linear functions. Which statement is true? | "iVBORw0KGgoAAAANSUhEUgAAARAAAACZCAYAAADnwmWxAAAad0lEQVR4nO3deVxVdf7H8ddlF0NMcAFBQckll0gxIFJz38bUFLcRdy1jQpvMSc2xMidLSzFTf6ZlaUmGpubPGZkm11Q0cwnTNHFHwgWNTZHL9/cHP07dWITjuVzu+Hk+HvfxkHPPOd8PeM6b8/2ey/malFIKIYTQwcHWBQgh7JcEiBBCNwkQIYRuZQoQb29vTCZTia/Dhw9bucyyW7lyJSaTieDg4Apve8eOHdrPpFWrVhXe/v0gKSmp1GOxevXqti7RwsiRIzGZTEy... | [
"The slope of Function A is less than the slope of Function B.",
"The slope of Function A is greater than the slope of Function B."
] | null | 1 |
math | grade-7 | which-is-the-better-coupon | true | false | Which coupon will save Jacob more money on a fancy watch originally priced at $49.50? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAASYAAACRCAYAAABufBWjAAAmCElEQVR4nO2de3QT173vvzN6S8aWhV/Y+AG2AduAHTBOIDwMTYIbQgtpQm8pbUh7Fm1P0lW6bktaclYSek7Tpum54fQmJyT39IQ2bdqSNOTZk6Q0NgmPxOHlGIuXDfITGxm/JVmvmfvHWLLGM7Kl8dge2fuzlpetPTM/bcmar/b+7d/+/SiWZdl2D1DvBPr9gI8FgUAgTCpqCpilAvKNQKoWoNrdLFvdN9XdIhAIBI5b4wH1FSf3YI4WWGjiVItAIBAmk34/cMk... | 1 |
math | algebra-1 | domain-and-range-of-absolute-value-functions-graphs | false | true | What are the domain and range of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABjKUlEQVR4nO39f3yU9b3n/z8nM/mdQEICCUYTQAQFCYqC8qtisepRawttD7bbH/bjbmu3tt2e7/bcuufWds/pza/b256251OP7Xbd7Va7334+3dqqrdCAKCgUKkiEAFEhBkgIkB+Tn/P7mpnr+v4RkxL5lYHrnckkj/s/MJO5nvPKdc1c85orr7nG4ziOIwAAAACuyEp3AQAAAMBEQoMNAAAAuIgGGwAAAHARDTaAEaqqqrR79+7hy8ePH9f06dPV0tKSxqoAAMgcNNg... | [
"domain: $\\{x \\mid x \\leq 0\\}$, range: $\\{y \\mid y \\geq 1\\}$",
"domain: $\\{x \\mid x \\leq 0\\}$, range: $\\{y \\mid y \\leq 1\\}$",
"domain: all real numbers, range: $\\{y \\mid y \\geq 1\\}$",
"domain: all real numbers, range: $\\{y \\mid y \\leq 1\\}$"
] | null | 2 |
math | grade-2 | place-value-models-up-to-hundreds | true | false | Which place-value model shows 730? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOQAAAChCAYAAADXwhNSAAAbdElEQVR4nO2da6wk6Vnf/3W/dVVfzv3MZWdmZ70XLFjsbIwgthyWEDmWg3AEJNi5GFnIAQlsZSOMkCDYDuEDShTnUxAmdoKI4QOKIFY+EDDCwZYWGRbby87u7OzszM6ce1+q637Ph+o+fa0+Y29Nnzpnn9+qZ8/pes/zPl1d/3rfet9/vcVkWZbthcCrLmAlQJyBIIglwTOAzgGPqcCGCDB7QZY93z/ttAiCeJcB8Dfd/JctEXhcy9VKEMRysBLgZQfYDYFXXID... | 0 |
math | grade-1 | compare-money-amounts | true | false |
Which is more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAlYAAACYCAYAAAAm2KfyAADGEUlEQVR4nOydd7hc5XWv3+n1zMyZ03uv6r0LSajQqw3YGBvHMbaJe9zi2E7i5MYpxHYS39jGcANudAiIIiEk1Hs5Xaf3Nu1M77Nn3z/mzA5yFVgY2+z3eXh4kDhn5tvzzd7rW+u3fkshiqI4m4DBCAQFSInIyMjIyMjIyMhcBmoF5KigwQhFWlDMxkXxdOCdflsyMjIyMjIyMn/crLGAeiCS+Y8SLTSZMlGXjIyMjIyMjIzMbycoQF8YZhLQHwFlIJX5CzmokpG... | 1 |
math | algebra-1 | identify-functions-vertical-line-test | true | false | Which of these relations is a function? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAATIAAAE3CAYAAAApC812AAAea0lEQVR4nO3dW3Bb5YEH8P/RXbJjK4lvITaOc7HVhMQWtiSLFrKwMJOECTTs0k1ZZhlY2F0e9mm3U54ynbZ0GYaXnUIZ2i07sNNd2t2mLqENtNMEukts+aokTiInDrYJaezEiWXH1t06+3AiybLlxAm6fdL/9xIsH44/2/J/zvnOOf9PkmVZHg8Bwz7g+jwQkUFElNc0ErBKDWwxAdU6QBoPynL3TK6HRUR0ZxxlgOacT/lgnQ5oKlFSjogon12fB4bmgEsh4Kw... | 1 |
math | kindergarten | ordinal-numbers-up-to-fifth | false | true | The first picture is a turtle. Which picture is second? first | "iVBORw0KGgoAAAANSUhEUgAAAaUAAABdCAYAAAAFZHluAAAikklEQVR4nO2dfViUVd74PzMMBTO8KCoDiq2oY0YCvvxK0ORnq1naVVprWvn0snJl7T5purq7mT6lu7i6ZatlPflkWNnlu2tZK60slquZdP1SBHzpaUJMKRhLDBgYk3n5/XEzwwAzwz3DAMPM+VzXXA73fe5zHw7H7/d8z/me71dhs9lsCAQCgUAQACi7uwECgUAgENgRSkkgEAgEAUOnKaWfGm0kH6hl1Cd1/NQoVggFAoFA0D4+KaUPKhtZ+dVVj8rm0I9mzjdYOVl... | [
"sub",
"turtle",
"fish"
] | null | 2 |
math | grade-2 | purchases-do-you-have-enough-money-up-to-5-dollars | false | true |
A carton of ice cream costs 5 dollars. Do you have enough money to buy it?
| "iVBORw0KGgoAAAANSUhEUgAAAvgAAAIXCAYAAADpMCq0AAEAAElEQVR4nOy9e5wkVX33/17kUg0IpxCkS1D3YCSpgQjdEsO0Cm57QRtvmfGWGVDZIYkvZxM1M8/vwewQo86aPDoTY2S8hUEl7HjBGeOFVhLt5TGPPYnBbjRxy2jwrIla7S3nQIQurvX741RVd8/O7M4KysqrPq/XTHefOnXup+r7/Z7vZUscxzE5cuTIkSNHjhw5cuR4WOCIh7oBOXLkyJEjR44cOXLkePCQE/g5cuTIkSNHjhw5cjyM8KAT+OaeGHnj7ZQa/4O5J9f... | [
"no",
"yes"
] | null | 0 |
math | kindergarten | flat-and-solid-shapes | true | false | Which shape is flat? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMwAAADMCAYAAAA/IkzyAAADD0lEQVR4nO3VP24VVxyG4d+9/lOAnVROlJICsgQvzOtgY+yAGIkyjtLZYAnjq0kxICWiyVuNLT1PNUenmK95dXbLsiw3DzMf7mfuDjOPywDfHO9mzo9mXr+Y+fV0ZnfzZVne3W49C56+y59mjq/v18NvpzO/v1xrAlZ3h5n3n2f+fJj5435mf/u4XogFfnR+tLYxM/PpMLM//OsC+NH3Nr4uM/ttp8DzIhgIBAOBYCAQDASCgUAwEAgGAsFAIBgIBAOBYCAQDAS... | 0 |
science | grade-6 | use-data-to-describe-climates | false | true | Which statement best describes the climate of Honolulu? Hint: Summers in the Northern Hemisphere occur in June, July, and August. Winters in the Northern Hemisphere occur in December, January, and February. Honolulu, Hawaii, is a city in the United States. It has a tropical savanna climate. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAALOCAYAAACTXGSDAADyY0lEQVR4nOzdd3xT973/8ZeWt/GUB55gpjEYs8w2CYSQMsLMaJKG2zQ346Y/bm96O3Lb297ue9ukt21oc9M2SUnSJiGYDDMSIGC2MWAbjG0MxniB95SH5vn9YaRYYMKSLUE+z8fDD1tHRzpvS8fyR199h0pRFAUhhBBCCCGES6jdHUAIIYQQQog7iRTYHiA7OxuVSoVKpWLSpEnujiO+hN544w1UKhUTJ0685fsKDw9HpVLxxhtvXHFdSkoKKpWKn/3sZ7d8nFuRmJi... | [
"Winters have more precipitation and higher temperatures than summers on average.",
"Summers have slightly higher temperatures and slightly less precipitation than winters.",
"Summers have higher temperatures and more precipitation than winters on average."
] | null | 1 |
math | grade-6 | interpret-histograms | false | true | Miss Hanson ran a sit-up competition among her P.E. students and monitored how many sit-ups each student could do. Are there fewer people who did 0-4 sit-ups or people who did 5-9 sit-ups? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAF8CAYAAAD1tsxgAAA3VElEQVR4nO3deVTU9eL/8dewCKKAGyiKgruJmoJLYSrqdbtmomkuLXavN+maS7bovd17u/atTr+6WWaLmZpHr2mmuSTlmkuWK+MGmvuC4IKyCAiKwPz+6DBXVGxGPjAz+nyc44n58Pl85jXzHk4v3rznMyaLxWIRAAAAAEO4OToAAAAAcC+hYAMAAAAGumcL9q+//qqYmBjNnDnT0VHuCbY8n++9955iYmJ0/vz5Ms2yZMkSxcTEaNu2bWV6P3dSXo/VFrGxsXrxxRc... | [
"5-9 sit-ups",
"0-4 sit-ups"
] | null | 1 |
math | kindergarten | count-to-100 | false | true | How many dots are there? | "iVBORw0KGgoAAAANSUhEUgAAAV8AAABNCAYAAAAB3GelAAAJHklEQVR4nO3dP0zbeB/H8c/RUJ3jOH8LUsXxNByqcw8hC1Ir8UydWumQnql0B6nLTSA9+9H9UWG6pScYkQ6m03ESGxM8YugSQhu3hSAUIRXyDzsYNeHJDTS5/kmIHWysup/3mNr+vZThG2ol/n1Tq9VqmqYhmUxCURTk83kwxhiztnA4DFmWkUgk4PP5AFVVa4uLi7X19fXa0dFRzcmePn3q6PofRkvzaGkeLc2j5e+Ojo5q6+vrtcXFxZqqqjVPMpnErVu3MDo66vQ... | [
"19",
"27",
"15"
] | null | 0 |
math | grade-2 | which-table-is-correct | true | true | Marcy bought the following items at the hardware store:She wanted to know how many of each item there were, so she made a table of the items she bought. Which is her table? | "iVBORw0KGgoAAAANSUhEUgAAAT0AAADUCAYAAADup/RjAAA6wUlEQVR4nO29abBlZ1n3/buntfZ85tNn6E53kk46nQBJEwgJCJEYwyBRoBgEhLIQHqvEEi2LKq3CoUTxi2W9z4tgWVg8aumjlQJfFKMiIiARhEjSIUknIT2lh5yhz7DP2fvsaa113++Htc/pMUNDnz2cc/++nD7jvtbuvf/ruu/ruq+/+N3f/V2Hx+PxbBM0wO/8zu90Ow6Px+PpCLrbAXi2Fie/dj9LTx8CwLoEISQjV+9j10/+TJcj83hSvOh5rijHP/+XzB97Gqk... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAqcAAADUCAYAAAChzIpCAABuWklEQVR4nO39e5xkVXno/3/Wbe9dVV197577jRkYBlQYEQQ8gCCiGDBKjJ4oYF5qosf7OdFoTNQcSYzJMfrLV8Wv0eMx+UZzgmg0ShSJIIoaQW4y3GeGYYah79fqrtvee63fH7u6Z4ZBEZzuqu5e79drXt1dXV29dk117Wc/az3PEn/+53/u8DzPWyH+/M//vNlD8DzP834FDfDhD3+42ePwPM9bFD449TzPa2262QPwlpcDN13H+MP3AWBdihCSni3b2fDi327... | 1 |
math | grade-1 | which-table-is-correct | true | true | Sally saw the following toys at the toy store:She wanted to figure out how many of each toy there were, so she made a table of the toys she saw. Which is her table? | "iVBORw0KGgoAAAANSUhEUgAAAQkAAACxCAYAAADXhkjIAAApPElEQVR4nO3daXRb553f8S/WCxArAXDfSZHiJonaZVm2vCVeZHtsJ85kJp4krtOkjpPpaZYzbU9bu6/mzLSdtslJc84kcTqt0yQe21k8dm3Z8aLIsbVvpCRSIgnuAIh9x12AvqBDR7Uj2RYpbs/nDUkR9+q5l8AP9z73j/vXPfHEEyUEQRD+CCPA448/vtTjEARhmdIv9QAEQVjeREgIgnBZIiQEQbgsERKCIFyWCAlBEC5LhIQgCJclQkIQhMsSISEIwmWJkBAE4bJ... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAkAAAACxCAYAAAAsywKjAABVuElEQVR4nO3dd3xc1Z3//9d0jaZKGvUuWbJly7bcjTEYsLEBY4opmwQIEBIISchuAmwaCaR8k/Al5ZfwJbtLSzZrAiGmOJS4Y4wB9yq5yFZvo5E0VdNumfn9IVDitYkxyFY7z8eDx6CZuXc+98qa+z73nnOu5pFHHkkiCILwER555JHhLkEQBGHI6QEefvjh4a5DEIQRSgQgQRDGIu1wFyAIgiAIgnC+iQAkCIIgCMK4IwKQIAiCIAjjjghAgiAIgiCMOyIACYI... | 0 |
math | grade-3 | am-or-pm | false | true | Lola is walking her dog as the sun comes up. Her watch shows: What time is it? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACwCAYAAAA16xkbAAAPjElEQVR4nO3dXYxcZ3kH8Gd2/b0TnNAQD4iE0F1U1KTspq0KlW3ai7S79Au1DgIq1Y5EQKqdiyYIuxfYKHYv6pVKbrBF4gqRREkqZO9NW2nHkkkLsRI1UK0pn2U3NEDpOjHka8b2Jt7dXhivd8fx7pyZd2YyM7/f1ax23nOeI+/FP0+e8765+fn5+QAAAJLoaXUBAADQSQRsAABISMAGAICEBGwAAEhIwAYAgIQEbAAASGhVqwuo1fnz52NsbCxOnjwZP/jBD+J73/t... | [
"5:45 A.M.",
"5:45 P.M."
] | null | 0 |
science | grade-2 | identify-solids-liquids-and-gases | true | false | Select the solid. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAA8+0lEQVR4nO29eZAcV53v+zm51N5dvarV6ta+S5blfRU2WDIPs8yFh4EhDAzMDPOYgQgGJogXw8yEZxheBBEOv8sLE8BsmJjhAb73zn0sY4ZrDFiSF2xZsmzL2vfW0uq9q7v2zDzvj5NZlVndkrvV1d3VUn0Vpepc6uT2zd92fud3xJ5RKdfHoUGnjjrmFGM2HEnDxQI0G7CtSa3X6oSsY77QoMP6uPp73C6v1+qErGM+4fGvKMvrtPk5lTrquDzqpKyj5lAnZR0... | 1 |
math | grade-2 | how-much-more-to-make-a-dollar | true | true | You have these coins:Which coins do you need to make a dollar? | "iVBORw0KGgoAAAANSUhEUgAAAUEAAACMCAYAAADiDxvvAACtNklEQVR4nOz9d5hlZ3WnDd87nhzrVM65q7s656iW1IoIAUICgQR4cPYwYPt1Gs/49RhmPPONPe9gGxuTk21EkIRAKLVSt1qdc3d1rqqunE8OO+/vj1NdSCZJoACobl26ulWqc2o/zz619lrPWuu3BNd1XRZZZJFF3qKIb/YFLLLIIou8mSwawUUWWeQtzaIRXGSRRd7SLBrBRRZZ5C2N/GZfwE/D1EoUCgV0XaNUKGAZOsXkFIbtIssynnAMvz9AMBRG9foIhIIIgog... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAu8AAACMCAYAAADMfEeMAAEAAElEQVR4nOz9d5xcB3nvj79PnV63976rsuq9y3LDDVNNL6EE4iSQxs3vppPchHtvOiQkNyaUAMY044qrJFuWJav3Lu1qe5ve59TfH7NabEiCAcmyv5w3L15qszvnmbOe+ZznfJ7PI9i2bePg4ODwS4ogCNf7EBwcHBwcHF414vU+AAcHBwcHBwcHBweHV4cj3h0cHBwcHBwcHBzeIDji3cHBwcHBwcHBweENgiPeHRwcHBwcHBwcHN4gyNf7AH4aeqlIPp+nXC5... | 2 |
science | grade-8 | 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 | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAVPklEQVR4nO3daXAkd33G8W9Pz6nRfa/2Xq/XxhB8QJUhGBsSDHZS2A6EIwVv/IpQFOFFSKhgKKpSAYpcBSQVQhWOOQyYIsQXp21sbApswDbY2Mb2anclre5jRqMZzdlHXrR2tDpYa9Goe2b0fN5sbWvU8x91z9Pdv3//ZgzXdd3pMgznIWuD5SIiUhNhA9pMuLAFBqJgTJdc95dLQQ9LRJrdle0QPp73/rMnChclvTQSEamFrA0vLMNUGV7MQ2jJ8n6gsBGRWms... | 2 |
math | kindergarten | count-sides-and-corners | true | false | Which shape has 4 sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAACjUlEQVR4nO3VPW4VVxyH4f+9/ojER+gcpaBMWAIr8SrZCTsgpKPASWmDJTu+mhQjpEih4+od4jxPNUen+RWv5uyWZVmu7md+v525Ocw8LAPf7HQ38/xk5pcnMz+dz+yu7pbl7fXWs3jMXv84c/r+dj38fD7z6ulaIXyrm8PMu88zH+9nfrud2V8/rBci45ien6xNzcx8OszsD/+4gGP60tRfy8x+2yn8XwiNhNBICI2E0EgIjYTQSAiNhNBInG494GvevPlz6wn... | 0 |
math | grade-6 | interpret-double-bar-graphs | false | true | A transportation analyst compared various bridges' tolls. Of the bridges shown, which charges the most for a truck? | "iVBORw0KGgoAAAANSUhEUgAAAVMAAAIbCAYAAABWqH3oAABGfklEQVR4nO3deVxU9f4/8NcAIssAJpuiXUzMDREwV1AUTQ3LVETUMsuvioq7FurNm6ZyXdJUzFJccyWXC65dMQVERXPFDfclRRBZhkUEGpjfH/6Y6wgMCGfmDMPr+Xj4iDkz55z38LCXn7N93hKFQqEAERFViYHYBRAR6QOGKRGRABimeioiIgJjxoxBTExMmZ/57rvvMGbMGOTk5GixMvXerHvJkiUYM2YMkpOTRa6MSD0jsQug0uXm5mLq1KkqywwNDWFlZYXWrVu... | [
"Tacoma Narrows",
"George Washington",
"Oakland Bay"
] | null | 1 |
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