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-corners | true | false | Which shape has 4 corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAADvElEQVR4nO3Zz04TURiG8bctsEDQncaFS/USuC9ukoQ7QNyLS1toAtKMixFFBSztzHe+P8+z6mSSk2/xy0znnEnXdd3FjfR5KS1W0m0noq3bmUiHM+n9vvRmT5pcXHfd6bz1WJS5o5fSzvmyv3i7J3180Ssk2rbFSjq7kr7cSJ+W0nR+298AGQ3Z4aw3JUmXK2m6uneDaMjuTH3vpGnbUahKQCOTgEYmAY1MAhqZBDQyCWhkEtDIJKCRSUAjk4BGJgGNTAIamQQ... | 1 |
math | grade-7 | nets-of-three-dimensional-figures | true | true | Which figure will this net make? | "iVBORw0KGgoAAAANSUhEUgAAAMQAAADNCAYAAADnqd+jAAAScElEQVR4nO3df1BTZ74G8IcAUVMt0VVL8Qfp0CottRVUbkvFsgayVa96Ymuxe3V0vG5HtLPaUhm13ardVjtU29GtwHStV6fcVtZKmlBvITa4LuzoZkjRtWnVYicWUVCqQUtSwo/cPxzjoQQIISFIns+fvOecfBWeOXmT73nfEKfT6QQRAQAkgS6AqD9hIKjfamxsxGeffYYlS5YgKSkJer0eDofDr68ZwrdM1J/U1dVBo9FAp9OhtLQUTU1N7cYzMzOxfft2v70+A0E... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUAAAADNCAYAAADJyakYAAAnlUlEQVR4nO3de1yUZd7H8Q8gqJhCpnlIBTdPZSZg8aRpUijr4UEHU7FNVzS39ZCJUZTpE1B5WMvC1mNbCU/ullpyKkMNwSR1eaQZNDIV1zFUNDUHFVAQeP4YZwIFhGFOzP17v169eOU9c9+Xzvj1uu77un6XU2VlZSVCCACcnJxs3QRhRc62boAQQtiKBKCwW0VFRXzxxRdMmTKFQYMGsWPHDkpLS23dLOFAnGQILOzJuXPnSEhIIDk5mV27dnH9+vVqxyMiInj... | 0 |
math | grade-2 | write-subtraction-sentences-to-describe-pictures-up-to-two-digits | false | true | Which subtraction sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAfQAAAD6CAYAAABXq7VOAAAvT0lEQVR4nO3d728b94Hn8ffwl0j9FuVaUmPrh13HWd86arKJ97xAUXTboHft7mK7zWG71z5w0T+hd0/uyeGeFH1wuGd9eEBwuKKL7baLQ+9B0aJ3KIqtu9muY6f50TS2Y8eyIimq6MjizyFn7sGQooYcijPiDDXWfV7AwhI5JOcdFfsdfmf4pWHbto2IiIg80RLHvQMiIiIyOA3oIiIiJ8CxDeiVQg2zWD+ulw+NOuJFHfGijnhRR7yE3ZEK7ZkCuvvTdSzTIpFOkMt... | [
"44 − 1 = 43",
"43 − 2 = 41",
"43 − 1 = 42",
"42 − 1 = 41"
] | null | 2 |
math | grade-1 | which-picture-graph-is-correct | true | true | Molly got some food to feed her pony. Which picture graph shows the right number of each food? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAABeVUlEQVR4nO3deXxU9b34/9c5Z5bsG1kgAgHZK4KK6xUUlVoV6/LVura2tnW5tlZte9urrbZV2tpbi716W/Vab11qXSo/EcWtyCJSRUAJomyBrARIQpLJZCY5M2f5/TFZGDKTBWYmk+T9fDx46JxzZs77kBzmPZ95f94fxbZtGyGEEEIIIURMqIMdgBBCCCGEEMOJJNhCCCGEEELEkCTYQgghhBBCxJAk2EIIIYQQQsSQJNhCCCGEEELEkCTYQgghhBBCxJAk2EIIIYQ... | null | [
"iVBORw0KGgoAAAANSUhEUgAABV4AAAEOCAYAAABxfAxvAACcuklEQVR4nOzdeXhU5fn/8ffs2RMgYYewL4oEXFCqKCJaEa1ad21dWhVbbcVqbXFrq7RVa63Vb1v9Wb91qbt8xQVQi7JXlEU2WQPZIED2ZJJJZjlzfn8MySFkEhLIBvm8rosrzDnPnHOfm0yY3POc+7GZpmkiIiIiIiKtwmazdXQIIiIiItIJ2Ds6ABEREREREREREZHjjQqvIiIiIiIiIiIiIq1MhVcRERERERERERGRVqbCq4iIiIiIiIiIiEgrU+FVRERERER... | 0 |
math | grade-2 | match-analog-and-digital-clocks | true | true | Look at the analog clock: Which digital clock shows the same time? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABLuUlEQVR4nO3de3RU5b0//vfee265zCQhIJcEgWCFBAuILYlaaU81uCoe13cZbKX2tAfbarvW1xNcFf2jhS7B/lGhS9Cu1apHaI8eL5X4+60eaX8m0nNOKpBoi0BlIlZuZSLGEJLs3OayL78/JhkyZC7PTOaavF9rucieeWbmaTK785lnf57PRzJN0wQREREREaWEnO0JEBERERFNJQywiYiIiIhSiAE2EREREVEKMcAmIiIiIkohBthERERERClkyfYEKAfoJqCbMEf... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA5oAAAEJCAYAAAD1mFhPAABdP0lEQVR4nO3de3hU5bk3/u9aa045TRIOEkiQY4UEC4G2JIrSvbcNdFfr9V4G21Ldtdiqba0FW8F9/Vror2Df9xVpBWtPugWtVm0lvO+v1W5JxL2biibaYqBlIpZwKBNJDJBk5TSHdfj9McmQSSaZteY8yfdzXVzJzDxrrSfJjM499/3cj6Drug4iIiIiIooLQRBSPQWilBNTPQEiIiIiIiKaWBhoEhERERERUVwx0CQiIiIiIqK4YqBJREREREREccVAk4iIiIi... | 0 |
math | pre-k | inside-and-outside | true | false | Which picture shows the fishing pole Created with Snap inside the tent? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOQAAAC/CAYAAADuHnC5AACRcklEQVR4nOz9eZhcd3nnDX/OUvu+9L639n23LdlY3gAvGAOGTIaAmWAyM9kgg/PknYGHZB48TuaZSXgHM+HNTIwT7MSTYYLBBmyDsY0MlmTLUmtvdUvqfaleat/rbO8fp6u6W73Lkjf01VWXqqvOOXXq1Pn+7v2+BcMwjEgJLuQgrYFqcA3XcA1vE2QBPBKscUKNFYRI0TDeSL3Tp3UN13AN13tBPp8z/6izwjqXydZruIZreHuQ1qArC6Ml6M6BmFLNN66R8Rq... | 0 |
math | kindergarten | equal-sides | true | false | Which shape has 3 equal sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGuklEQVR4nO2d3W7bRhCFR/5DmybtRYEWvSjQm7aPkAfoG/cFnMRxABtwAjgIENcJYF/JLUApokQxJEVuL2QHdizrdzk7M3u+m8RRFDH2Z4o73nPYcc65q5Low5hoWBNNHAGwMTsdoifbRL8/Ivp5j6hzVTh3nIY+LGCZp98T7ZyPpx/8skf053dTCwHYlGFNdJYRdUuif8ZEW+lk+gAkAz55sj11iohoVBNt1bceAMAnN05Vjmgr7KGAWIBogAWIBliAaIAFiAZ... | 0 |
math | grade-2 | read-a-thermometer | false | true | What is the temperature? | "iVBORw0KGgoAAAANSUhEUgAAALkAAAEOCAYAAADVFbYlAAASWUlEQVR4nO3dT2wj130H8C/1Z20rG2s2UFwv0Egj70UO1tBIKWIDlSESBexLWs0U8MlwNVNgAxRFSxI++RCIjIH6UBQkW/TSBUKqgC+9cNQ/BxsoOKzlg11EGsMOrBRwdkS3FeCy7Wi9pXdFieyBJkNqyPVSHJLi4/dz06NW8xb48uHN4/x+DFSr1SqIBDYx7AkQ9dvUMC7qOA4cx4FlWS3jsixDlmUEg8FhTIsEFRjUdsW2bWxvb8M0TRz+xxeYmJ1HYHYegelvNX6... | [
"15°C",
"20°C",
"10°C",
"5°C"
] | null | 3 |
science | grade-2 | identify-magnets-that-attract-or-repel | false | true | Two magnets are placed as shown. Hint: Magnets that attract pull together. Magnets that repel push apart. | "iVBORw0KGgoAAAANSUhEUgAAAb4AAAC6CAYAAADRayhLAAAavUlEQVR4nO3deZRcVZ0H8O9bat96XxNCQgLpAIKyCGRUxFEcETgKOo6DEVcWB0TlIJyBAWUYlsMgA8LoGVFwQUQdRI4KjuJMIBLASBIgC4R0SDq9pveuqq6qt8wfnUq66a1e1at67936fs7JyTk5nc6tzu98f/fde997kmmaJoiIiKqE6vQARPRaykRnysSetInejIkRzcSYBkxoJsZ14Ft39WE8ICEZkDCuSpBCMk5oUqCEZMghGXJIghJX4G9W4WtW4W9WIfklpz8... | [
"attract",
"repel"
] | null | 0 |
science | grade-4 | identify-minerals-using-properties | true | false | Select the one substance that is not a mineral. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAANcAAAEGCAYAAAD2aACLAACIlUlEQVR4nOz92a/dWZbfiX328BvPfEdeMsggY8rIyMzIylJWl0qldlutoduwbENoNQwIhg1B8F/QaBvwi9/0qhe92X6wuxsN2P3QkF2l1uCWXCNUqqrMysyIzIyMiTPvfObftAc/7N8595JJZgwMBhlRdwGX5/JM9wx77bX2Wt/vd4l/P/H+Gx3oKS7swi7sc9jMws8XcL+GkYa/PgzXywvHurALezrrKfhGJ/w+t2fXywvHurALe3pb+VHjz67Tj7tjXZsv4/V... | 1 |
math | pre-k | addition-sentences-up-to-10-what-does-the-model-show | false | true | Which addition sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABUCAYAAAC4PkCPAAAQs0lEQVR4nO3dW2wc130G8G9ue1+SEpe0SJoiLclkLFgiUilwZVRSgSLyg2XYaFw4T0YaJEb9Fr8EUNA0SVs0Ly3aJ6NFi15QA2kfHCBIUCN5SIvYkftgO3EZtbbuN5ISzaUkLvc2OzOnD8OllhRFaamZM8M53w8wLFG7c86nEfb898yZM5oQQoCIiIiIiAKhR90BIiIiIqIkYYFNRERERBQgFthERERERAFigU1EREREFCAW2EREREREAWKBTUREREQUIBbYREREREQ... | [
"2+5=7",
"3+4=7"
] | null | 0 |
math | grade-2 | purchases-do-you-have-enough-money-up-to-1-dollar | false | true |
A dog sticker costs 3 cents. Do you have enough money to buy it? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAABuCAYAAABSgmeUAAA/tUlEQVR4nO3dd3xUZdo//s+ZnmQyM0kmvZME0oBEQodQFARFWRuiLigK6j66q19hFR/Wtivq4651VdZdKxZElK6AFOlFWhSBkEAI6cmkzEwyvVy/P/KbY4YUggSQ7PV+vfKCnDbn3OfM5Dr3XPd1BCIiMMYYY4wxxnoFyeXeAcYYY4wxxljP4QCfMcYYY4yxXqTHA3yji5C8wYzcLc0wujj7hzHGGGOMsUvpvAL8ldUuPFdo7zJw31rvRqnViwKTB7MOWi94BxljjDH... | [
"yes",
"no"
] | null | 0 |
math | kindergarten | count-to-100 | false | true | How many flowers are there? | "iVBORw0KGgoAAAANSUhEUgAAAbgAAACECAYAAADiBT7RAAAZJ0lEQVR4nO3dTWwcd/3H8c/Mzsw+zdi76/gxdmKnaWywVGiaf5uQNFHggCARFRQJJDgiFbWX9oJASsWBHnKkBx4O4VCph4gLolIQfyoaJaCUVFFawr8Cmzw4jrtbe22v7dnHefwf1om93qfZtTfO2p/XMdqZfXsu3+w8/EZwXdcFERHRDiNudwAREVErcMAREdGOxAFHREQ7EgccERHtSFKzGzq6gaU/TUC/eg8AIPdriHxzFKHDA1sWt5XY21rsbS32thZ7W2u7eoV... | [
"21",
"23",
"24"
] | null | 0 |
math | kindergarten | flat-and-solid-shapes | true | false | Which shape is flat? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAVP0lEQVR4nO3dWWxbV34G8I+LSC2kFkqiJFvyFtuSk0mc3UkzTdJ2BunMNAk6k6JLkrZo+zDTAn3sQ4t5KIoCfe5LXwfoax+KGaBI0CjbpIkj27E0jrV4lUSt1r5bXMQ+/O/huaQoS6J4ebh8P+BClq5iXyf5dM49/7O4kslkciYK3NkE1hJAPAkicojXBQQ9wLlaoM0HuGa2k8m+VdOPRVR5LtUD3tub8kmHD+iuk3QSkTPWEsDIBjAdBW5tAu7VuNxg+IicF/R... | 1 |
math | grade-1 | match-digital-clocks-and-times | true | false | Which clock shows one o'clock? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMIAAADICAYAAAC6ej5XAAAPuElEQVR4nO3dbXBU12HG8f9KIDCsIFBASxPTAotxh9haaqeZsaQ4yUwiTTvpJAiPp25qnJniJkATg2PxoUDGkj8YMsYzLcIN7ngs+a11gZnApNWmg52ARBzcFOSQuJiVkxAX74IxBnZ5EYjth2WV5RK0e/a+7ZWe3xekYe89R1fnuefcc8+9CmWz2WxyEBLn4dwQXMkiMuqNC0FtNSyYBHU1EEpeymYPnPW7WiL++fQUGHf0fO6b2TWwcHIuJSKj3bkhOJKB9wf... | 1 |
math | grade-3 | is-it-a-polygon | false | true | Is this a polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADmCAYAAADvPPLxAAAbdElEQVR4nO3dQWhbd7bH8d+MDVZtGRUr4MRScMC1VcgjKs+GcXaRl0nsVQIlpu4q2MtXk2z6eA0xQzcJTZc2k82kOMyQrJw6Syu7+IEyPA0TqOQaYiJrYohChGRZAZm+xfVVFcdJZPtK917p+4EwxWmdM21Dfz4+/3P+8Ntvv/0mAAAAAJb4o90FAAAAAI2EgA0AAABYiIANAAAAWIiADQAAAFiIgA0AAABYiIANAAAAWIiADQAAAFiIgA0AAABYqNXuAhpRKp9QajO... | [
"no",
"yes"
] | null | 0 |
math | grade-8 | identify-alternate-interior-and-alternate-exterior-angles | false | true | \line{GI} and \line{JL} are parallel lines. Which angles are alternate exterior angles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD2CAYAAADs6vBqAAAW/klEQVR4nO3db2xddf3A8c+9bB3JYO0Y6ACZQxhWttquvRtZELsmGhNjpIsPFB84FhJFBlKnxhhZsighxhgoWYwiEboE8ZktiSYixg5NkIze0u5KmKjbIJjMAGtrhGRjW38P/LWu9M/W3b/nntcraULvoT2f8w0P3v1yzr2ZycnJyUih8fHxiIhoamqq6hxJZf0AAOaWrfYA1dLX1xd9fX3VHiOxrB8AwNwyad3BXrt2bWQymThy5Ei1R0kk6wcAMLdU7mAPDAzEq6+... | [
"\\angle{IHF} and \\angle{JKM}",
"\\angle{IHF} and \\angle{JKH}",
"\\angle{IHF} and \\angle{GHK}",
"\\angle{IHF} and \\angle{LKH}"
] | null | 0 |
math | grade-3 | compare-fractions-in-recipes | false | true | Does this recipe call for more flour or butter? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFwCAYAAACCdAwbAABRDUlEQVR4nO3dd3iUVd7G8e9MyqRCSEJHRGlSQs1KU0BWBIGwqFgA1wKuCNJBlxdBI2VFUdqCggVdWBTExVBsiIjAIkiAAJGaUAOBJKSTNpOZ94+QWUISSMIMCXh/rovrcmbOnHOeJ9mde05+z3kMNpvNxmU2mw2r1YrFYrH/MxqNuLm54erqiouLCwaDARG5/dhsNnJzc7FYLJjNZqxWK66urvZ/RqNR//sXEREpAUN+wLZareTm5mI2mzGbzbi5ueHp6akPVJE/KJv... | [
"butter",
"flour"
] | null | 1 |
math | grade-1 | square-corners | true | false | Which shape has 4 square corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAFqUlEQVR4nO3dPXMbVRSH8Wdl2YCJTZdMOgpeSsp8CAo+KwVfIl3KkBTp4lBKiYKFNUux0WCChbS79+Wcc/9PFY/H43vP+Y1m4pd11/d9f7OF1xtY7+CuR6nZLTu4OoPvL+HJBXQ3t33/fFX7WCpyz65h+WozvPH0An78elCo1NzWO3j5Ad5u4fcNLFZ3wzuETKXs6mwwBfB+B4vdvXcolbK9qb96WNQ9imolQVNFEjRVJEFTRRI0VSRBU0USNFUkQcvUxzdb3v2... | 0 |
math | grade-4 | parallel-perpendicular-and-intersecting-lines | false | true | Are these lines perpendicular? | "iVBORw0KGgoAAAANSUhEUgAAAH8AAAB9CAYAAACLdbwYAAAJ9UlEQVR4nO2de2yT1xmHH8f1Gg8cIEhVRhaqEUVAgaUaSdoVlDHY2ohVLRRYYUATwnWUASodgqmFlE5A01K1QFiAcDEBwQo0CTBEKSCUqJuwwzQGCGjkViIKeO24JAY5kxu8P4LNl2uT2P7OdznPf7bj+JV+Ot/tOe85lmAwGERiSuJEFyARhwzfxOg2fLfLQ0V5NQ0NftGl6BaLXs/5DQ1+Xhi3jnv3GvlZxk/Izctm7LhhosvSFboNH+CDwqM4d1WFXw9I7sfYccN... | [
"yes",
"no"
] | null | 1 |
math | grade-7 | identify-alternate-interior-and-alternate-exterior-angles | false | true | \line{DF} and \line{GI} are parallel lines. Which angles are alternate exterior angles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADSCAYAAABw17dKAAAebElEQVR4nO3df2zU9eHH8dddpdAiXl1JoQh4TYt25UePn9aKXDvUUWSjTcaylExK0LmkZC1u08Qf4XDJNP6hVyl/TDE9mNRsTHtmkrLMhqLzKNhrDwkVDZTTqtPT0h66Fkqu/f7Bl0bkd/tpP9zd85FcDPdp3+9XwAuvfni/P2/LwMDAgAAAAAAYwmp2AAAAACCWULABAAAAA1GwAQAAAANRsAEAAAADUbARdQYGBvTaa6/pvvvu0+TJk5WUlKQZM2bo0UcfVXd3t+H... | [
"\\angle{DEC} and \\angle{FEC}",
"\\angle{DEC} and \\angle{IHE}",
"\\angle{DEC} and \\angle{IHJ}",
"\\angle{DEC} and \\angle{GHJ}"
] | null | 2 |
math | grade-1 | which-tally-chart-is-correct | true | true | Jake made a stir-fry. He chopped these foods. Which tally chart shows the right number of each food? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAABIpUlEQVR4nO3deXRc9X0//Pfd7+wjabTakiXb2PJus2/GxJA0ISVLm4Sy5Enor2lD0iSn4UcD5LT5tZDTcH4pkP76BB4aSJMASU+d55iSQBrgaSCAWWPHFC9ghCUZ27JkSyPNfufe+/whJEvW7LrSbO/XOTnHM3Pv/X5nfInfc+dzvx/Btm0bRERERETkCLHcEyAiIiIiqiUM2EREREREDmLAJiIiIiJyEAM2EREREZGDGLCJiIiIiBzEgE1ERERE5CAGbCIiIiIiBzF... | null | [
"iVBORw0KGgoAAAANSUhEUgAABFcAAAEOCAYAAABM5/hlAACClklEQVR4nO3deXxU9b0//tfZ5sw+k2Sykw0EIjuuUEQRra0Iblfr2latitpbvbW1VXuvtmrvT29bl/bWpVbbqqD9Fm9xb91Aq4AKIqjsIFlYAgnJJJPZZ87vj5AhIbPPJDNJXs/HwwfJOZ/PnM9MRsh5zefz/giapmkgIiIiIqKsEAQh10MgIqIhJuZ6AEREREREREREwxnDFSIiIiIiIiKiDDBcISIiIiIiIiLKAMMVIiIiIiIiIqIMMFwhIiIiIiIiIsoAwxU... | 1 |
science | grade-4 | use-evidence-to-classify-mammals-birds-fish-reptiles-and-amphibians | true | false | Fish are a group of animals with similar traits. The following traits can be used to identify fish: They have fins, not limbs.
They make eggs with no shells. Observe the animals and read the descriptions. Select the one animal that has all of the fish traits listed above. Goldfish hatch from eggs with no shells and hav... | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAp8AAACmCAYAAACcAuREAAEAAElEQVR4nOy9ebxkVXnu/33XWnvvqjpTz3M30MwCMimDzLOgIhpAUFBz0WiiXpGoSdREbzRXvCYSB/Rn9IoKiiSCohIUDCijTNLMMzRjz+MZqmrvtdb7+2PtU3LAAb0q92I9n09/uk9X1a61165zzrPf932eR27apLr9AAxZ+uijjz766KOPPvro4w+C0QD3jYNs9qp94tlHH3300UcfffTRxx8aowFEVfX5XkgfffTRRx999NFHH38acE//4jNfPgLjMsa0ZF2... | 1 |
math | grade-3 | compare-fractions-using-models | false | true | "iVBORw0KGgoAAAANSUhEUgAAAtUAAAC5CAYAAADnGsNjAAAs3UlEQVR4nO3deXhMVx8H8O8dyWSSTCJ7ZLPTLCqEEGvsYqlaW2uV1E7RUrTVUrWU963SohSllKigr9piqT2WSGKpEISIWJOIRELWOe8faaYZ2V0yKd/P83iezp17z/mdO7fxzXHuHUkIIUBERERERM9Noe8CiIiIiIj+7RiqiYiIiIhkYqgmIiIiIpKJoZqIiIiISCaGaiIiIiIimRiqiYiIiIhkYqgmIiIiIpKJoZqIiIiISCaGaiIiIiIimRiqiYiIiIhkYqgmIiI... | [
"<",
">",
"="
] | null | 1 | |
math | grade-3 | fractions-of-a-group-unit-fractions | false | true | What fraction of the shapes are circles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACUCAYAAACp1l47AAAMNElEQVR4nO3dz4/Vd73H8decH3BmgBnw0tJSpCZCjI3ANTHSjVQXxtjEboy6EF1Jd43/QE2a6N25613ddmXLwqur3qTGeBMFN+WmC8Ef0QzmSi+F/uCWYYA5B86vu5gOpFp658dnzvfM8HgkJGTIOef9+eQk88yXz/meieFwOAwAAFBEreoBAABgMxHYAABQkMAGAICCBDYAABQksAEAoCCBDQAABQlsAAAoSGADAEBBAhsAAAoS2AAAUJDABgCAghorfcBzv/5W/vT... | [
"1/4",
"1/8",
"1/6",
"1/2"
] | null | 1 |
math | grade-1 | rhombuses | true | false | Which shape is a rhombus? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAG80lEQVR4nO2c3WobRxiG35UUpU4sxw6mJVDnoFAbepAetNiB9FZ6db2VBGLRQpuDgpNCISnUhRCnlmMjVdL0YGWykXe1M6vZ+fve5yQEQzwz+2R+3p39MqWUOp0Af1wCoxkwVSBkbXoZMOgCX98BvugD2elYqeG572aRlDnaAnqvLvO/POgDB3dzCwlZl9EMOPkA/D0BXl4CnfNp/gNKRmwy6OZOAcDFDOjMCj8gxCbXTv2ngI7fphApUDTiBIpGnEDRiBMoGnE... | 0 |
math | kindergarten | count-to-100 | false | true | How many rectangles are there? | "iVBORw0KGgoAAAANSUhEUgAAAbgAAACwCAYAAAB97ntqAAAEk0lEQVR4nO3dsU0rQRiF0fGTa7CgAYsuABEQUC8BAYIyEA0g0cS81H4ajMW+n929Oiczu8GN+DSaYDe9994AIMyfuQcAQAWBAyCSwAEQSeAAiCRwAEQSOAAiCRwAkQQOgEgCB0AkgQMg0vbwx+3zY3v9/Jhry9DN7rK93D0Mn9k7nb217K1lb6217z06wS1tbGunN9k7nb217K1lb621792OXrrfX/3KmO88vb+d9Z69P2NvLXtr2VsrYa87OAAiCRwAkQQOgEgCB0A... | [
"26",
"21",
"34"
] | null | 2 |
math | grade-8 | nets-of-three-dimensional-figures | true | true | Which net will make this figure? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAAQmklEQVR4nO2dfVBTZ77HP0QEKZVEi6hFGirY9k55u8WdtrKzgC/T1Z0rYHtntbiXsLrFXtsS6m79Y6cFysxu2z8gtDuzK3UKdmRaZ2ebuHev2kFN2Ftx9q6UGGTmjohE0W5DFRMLNWjh3D/OnlNekhBC3qB8ZvIHkHPOE755vs/z+/2e85wIQRAE5gkbFKFuwDzjmRckzJgXJMyYFyTMmBckzJgXZJocO3aMI0eOBOz8kQE78xyhtbUVs9lMS0sLp06dwul0AvDoo4+... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUkAAADiCAYAAADDJjUxAAAo50lEQVR4nO3de1yU1b4/8M9wGQSEwRvgFQhIO3Irr2kdIa94dsKkJ7e3hLJDZQloO9uvfgXo+e2dnkrQdju1rXg76q4R1PMTrxssxTBNBDxZgIyACnhhQO4E/P6YPU9ye0SYmWcGP+/Xy5cvh+GZNep8WGs9a32XDEALyGS0tLSgpAHIqwHuNwG/8l+HyKisZICDJeBtB7jIARkYkialpL4F5yulbgURAcAER8BK6kZQa7k12t8Hy4GR9tqfaERkPPebgJ+rgVs... | 0 |
math | pre-k | fewer-and-more-compare-by-counting | true | false | Which group has more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAALZElEQVR4nO3d329UdRrH8c+ZaYexUtrQX24gxDUtS/SCHxsqaAKJRBBMIRETkl3/BC5M8MaECJrVq957oVfGRA1BA9xYDARiQqSCgon8sERiQGxpK7SlQKedOXsxdNPgIsXOfJ/zzLxfSYMEpE+fnvc58yudKI7juD8nXbotjeWlqVgAyqQmkurTUked1JaRov6JOO4dtR4LqD7PLpBq+m4Xf/O3jPSPx4t1AiiPsbx0cVz6LSf9dFtKjU4V/4D4gPKrTxdbk6R... | 0 |
math | kindergarten | one-more-with-pictures-up-to-5 | true | true | Count the tomatoes in this group. Which group has one more than the group you counted? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABmCAYAAADxjOYpAAAhOUlEQVR4nO3dd5TdZ33n8ffv1rltep+500dl1CXLsuVCN0sxmCTALpBNTiBeOAnZcFJYCFk4kCXZ5aSwiUnswGYTSrCB0EywFxLAsi1ZsoqtmVGZ3jS93Lltbvs9+8dII8tykeRpkj+vc2xJ87vP73l+v78+93ue+T6WMcYgIiIiIiLLwrHWCxARERERuZEoYIuIiIiILCMFbBERERGRZaSALSIiIiKyjBSwRURERESWkQK2iIiIiMgyUsAWEREREVlGCtgiIiIiIst... | null | [
"iVBORw0KGgoAAAANSUhEUgAABCEAAAB+CAYAAAAa5QvPAABciklEQVR4nO3dd3hc13ng/++dXjGDMqgz6CBIgJ0iKZIqrrItW7GcWHZiO7vJxo7LJtk4juOS4rZJ1nFsJ1nbcf1lE1dJLpLlIrmps4odhSR678D0Pvf8/hgQJFgkNhRK7+d59ECcmXvvmXvx4nnPe889RwMUQgghhBBCiBtCKcV4GrrjEMlBVrJtIcRLlEkDtxGaHFBmyb+mIUUIIYQQQgghbpjxlOJgeKVbIYQQq8vOAii1gGmlGyKEEEIIIcSLSVc8/7PCAs3... | 2 |
math | kindergarten | one-more-with-pictures-up-to-5 | true | true | Count the flowers in this group. Which group has one more than the group you counted? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABmCAYAAADxjOYpAAAoPklEQVR4nO3daZwc13nf+19V9b7P0rMvwCzYdxDEQogECZIWF1FcLFqRTdiSI1uisjg2pVx/PrFl50bJleLIujeOY8W5kUhdOZYjyaRikaIIkZQIEgABgsROzACzr93T0/tS3V117ouh4DDcABpUYwbP9w0w+NTpPs80Xvzr9KnnaEophRBCCCGEEOKK0Gs9ASGEEEIIIZYSCdhCCCGEEEJcQRKwhRBCCCGEuIIkYAshhBBCCHEFScAWQgghhBDiCpKALYQQQgghxBU... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA1YAAAB+CAYAAAAnS4CtAAA81UlEQVR4nO3dd5hk1Xnv++/eu3Lq6lCdw0yHyYkJTCKDkAhCCJQsC6xwZEvYxz6ywrHv42PJPpZ1bdmSzvUJkn2vJSTLNj5KYAsFECARBhgYmDzTM9M5VXVXVw67qvZe948CLI4QMJoZarr6/fwz9FC7e72zu55n/erday0NUAghhBBCCCHOi4djZZ6IVwDQUIBW2wGJC0Ch0EDBZS0OLo84cNR6SEIIIYQQQtSTffHKz0UpCVX1SaveWQ0ej1fo9ekSrIQQQgg... | 2 |
math | calculus | determine-one-sided-continuity-using-graphs | false | true | Is f(x) continuous from the right at x=0? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB81UlEQVR4nO3deXgU950n/nffrVtCAkkISwJzCnQgwDaHOMaOLxzH4DjYeXLgMJm1Nz6S3Z3dJOPNb2fG9nqOJGPH9niyawd7Z3YdM7FJbBAYGwGyMMgIJJC4hEAX0JJaUkt9V1VX/f5oJKs5jBrqS6vR+/U8frC6uz76qKq7+t3f/laVQdM0DUREREREpAtjrBsgIiIiIrqZMGATEREREemIAZuIiIiISEcM2EQUYefOnSgsLMTq1asBAF//+tfxwQcfXPaxsizjjjv... | [
"no",
"yes"
] | null | 0 |
math | kindergarten | represent-numbers-with-pictures-up-to-5 | true | false | Which shows 4? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAASD0lEQVR4nO3deXCbd53H8fcj65ZsST7j+6idy2mT9EjalELTbWk4A13aKUsL3Q7LDjDcswOdXkPZpQzDllJaYAs0UNiF7XZJz4U2pXeaNG3qXM7lI3ac+IxtWZJ1WMezf5iklMISmGl+9ubz+seWZWm+ejRvP4+e55Fl2bZtD89AdxLiecjZiMhbxGlBcRG0+aHKDdZwxra3xUyPJXL6WV0Czq7k7IVqNywKzNYpIm+NeB4OTMPQDBxMgiOWm71C8Ym89YqLZls... | 1 |
science | grade-4 | identify-magnets-that-attract-or-repel | false | true | Two magnets are placed as shown. Will these magnets attract or repel each other? | "iVBORw0KGgoAAAANSUhEUgAAAakAAAA0CAYAAAAwo8dyAAAHLElEQVR4nO3df2zU9R3H8ef9antXeqWllJJKoYpj0B/QDh0oRBRCxirUSZbsR0ZcDALSzESEf5YZcclCtBtORzDo5iQxxsW52MJ+sNplOBDCUlBocQqUwkqpq629lrv2enff/dEfm5sFer3e93u91+Mf/uDL8fqjyev9/vT7/Z5txY+7jGAIiRNHSidFy9ZjMztIEinMKGF72X6zY4hIFOyGYXaE5GLDUEHFWYSI2RFEJEp2swOIiIiMRiUlIiKWpZISERHLUkmJiIh... | [
"repel",
"attract"
] | null | 0 |
math | algebra-2 | linear-functions-over-unit-intervals | false | true | How does f(t) change over the interval from t=
–
10 to t=
–
9? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABxyElEQVR4nO3dfXRU9b0v/vc8z+T5YUISggkCig0mIBoVhIrFo7a2nkKtICAC3tNj77Vdt2ud0+XqObfrtsvj6l2nPV3ttT293isPCmr1J9oKBoqCgqBGIgQSEGPAPEGSmWQymcf9MHv//ogTEgiSgf3NzCTv11quNpPsdz7sndnznj179ph0XddBRERERESGMCd7ACIiIiKiiYQFm4iIiIjIQCzYREREREQGYsEmohH27t2L6dOn4/777wcAfOc738Hrr78OADh37hx... | [
"f(t) increases by 1",
"f(t) increases by 100%",
"f(t) decreases by a factor of 2",
"f(t) decreases by 1"
] | null | 3 |
math | grade-6 | classify-rational-numbers-using-a-diagram | false | true | Use the diagram to help you answer the question below. Which of the following is a rational number but not an integer? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEuCAYAAAC08GWcAACF/UlEQVR4nO3dd3hUZdrH8e/0mWTSK51AqBJ6U0RARBRRUcACioorNuy66rq2XVxfu65traggooICikpRadI7SO+Ekt4m02fO+8dJBhCkSDIt9+e6cmUySWaeSTnzm+fcz/1oFEVREKIOybP7OVjpo9jpp9KjYPf6cXgV7B4Fu1dRL1d9HLhcfb3Hf4LrFCo86r9RrF6DWa/BrNNg1oMlcPnI+z9eZ6m6LsGkJdGkIcmkJcmsJdGkJcmkvo83akL8UxNCCCHE6dJIwBb... | [
"74",
"–25",
"3/10",
"170"
] | null | 2 |
math | grade-4 | sides-and-angles-of-quadrilaterals | true | false | Which quadrilateral appears to have 4 equal sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAJcklEQVR4nO3dT29cVxnH8d+ZsZ00SV2aVkVVJUQkKGRRwQZFrBBCAiS2rNkj3gLd8SIq8QZQYdVNCxIKrFDKClj0HxIIEZG2iVNs14od3zksZs719XjmemzLPOc+z/ezydgzc33T6dd/zrl5nHLO+cGB9Pc9aaeRDrMAXJK1JD07lr56TfrihpQe7Of87rb1aQHx3NmU1j7am77x8ob0tevTOgFcjp1G+uBz6T8H0od70mj7cHoH8QGX79nxtDVJ2m2kUdO5A8D... | 0 |
math | grade-5 | multiply-unit-fractions-by-whole-numbers-using-models | true | false | Which model represents the product 3×
1
8
? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAT4AAACOCAYAAACohWTxAAAFQUlEQVR4nO3dzWqcVRjA8WeStgy1H7MQRY0aBE3QRbtLukpvQOimZJngDbT1BtLeQHMLdi1u6g10Vkm7sV0o1LowMMFqXQyZNkw/wutiGFQYssicdt7O8/vBIQmBkzN54M8LA2caVVVVj19E/LYf0TuIeFUFwFQ51og4PRvx+cmI909ENB4/r6p7e5M+FsCbsXQm4tij/cEPH5yIWHhnUEWAadI7iHj4LOKPFxG/7kfM7L0a/EL0gGl1enbQuIiIpwcRMwf/+QX... | 1 |
math | grade-1 | two-dimensional-and-three-dimensional-shapes | true | false | Which shape is three-dimensional? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAGAklEQVR4nO3dzU5b+R3H4Z8hyWI6absYTdULaHsJcxtzE3ORI4QiDUTKi0AZgYQGZ+WNU8kLlBgIBnO6cGlQGhJebH9tn+dZgdj8Qf6c99+h0zRN825U9fak6sO46qIpYEYedaqerlf947uqvz2p6rw7a5pX79PLgvb56c9Vj7onk2/+/qTqX3+a1AnMxodx1R/HVf1R1eFJ1dr7i8kPxAez93R90lpV1XBctTa+9gNg9q5aO2+q1rJLgXYTIAQJEIIECEEChCA... | 1 |
math | grade-7 | describe-a-sequence-of-transformations | false | true | What combination of transformations is shown below? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEyCAYAAADA5Kd8AAAfgElEQVR4nO3de3wU5b3H8e9sMIkSQhUVSCCAx5e1KKIsoCIXPQV6iKKogNYbQkVRxMKxBm2h2oJV8FBpEUWxipeDCih45KJgRa5yWzSAiFbFBBKCSjUkQBLcmfPH7G4Sbrk92Umyn/frxSu7szPP7zeTSL4+PDtrOY7jCAAAAIARPq8bAAAAABqScgF7z549UW8gVmp6VZeaDaumV3VjpSYAACZYZZeIBAIBL3sBgHL8fr/XLQAAUGWNjtwQ7V9ogUAgJmp6VZeaDau... | [
"rotation, then reflection",
"rotation, then translation",
"reflection, then rotation",
"reflection, then translation"
] | null | 0 |
math | grade-6 | understanding-percents-strip-models | true | false | Which model shows 90%? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAVAAAABLCAYAAAAmjt81AAACKklEQVR4nO3XQWoTYRjH4XeStIva6kYUD6AeoSdwU/AQ3kDoOQrewDsodOMNeoNa91Z01bSB1obPxRAQ1JL8sYyxz7OZDDPD965+vOlaa+30qurTrGo6r7puBcBvTLqqnXHV062qx5tV3ella0dnQ48FsF5271dNTmb9zZPNquf3+roC8KvpvOr4ourzVdXHWdXo7Lp/IJ4AN9sZ962sqjqfV43mPz0A4GaLVn5vVaNhRwFYXwIKEBJQgJCAAoQEFCAkoAAhAQU... | 1 |
science | grade-4 | identify-mammals-birds-fish-reptiles-and-amphibians | true | true | Reptiles have scaly, waterproof skin. Most reptiles live on land.
Reptiles are cold-blooded. The body temperature of cold-blooded animals depends on their environment.
A box turtle is an example of a reptile. Select the reptile below. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOzdd7wnVX34/9dpM/Npt24vsCy9CgiKBRRQQeyKStSImqhf/fpNlGiMGGMSTUyCLUZNLLFFTZQIYgk/0RABEaQsve6yy/a9d+/e8qlTTvn9Mcv9soCy6BoN33k+HvcBnzKfmTufc2ff58z7vI8IIQRrLd57KpVKpVKpVCqVyv9MUkq01oiiKEIV3FcqlUqlUqlUKv/zSSmRVXBfqVQqlUqlUqk8Pnjvkb/pg6hUKpVKpVKpVCr7ThXgVyqVSqVSqVQqjyN... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6cAAADMCAYAAACPx9V0AAEAAElEQVR4nOy9edglZ1nn/3m2Ws7yrr13Z+uE7AsJYQtrArKJIJIIGAXhGp1LhhnFQXH9oeI2IuAIYQQZRA3qqIRdhgiRhIRsJGFJIGQle6/vcraqetbfH/X2Kx0CdDAgMudzXX11v+dUnar3qedU1/3c3/t7i5RS8t4TY2TKlClTpkyZMmXKlCn/MZFSorXmcwM4rgt99e99RlOmPDTDAF8dwwMW5jU8ea59XU4D0ylTpkyZMmXKlClT/uMTY8R7Pw1Mp3zf01f... | 0 |
math | grade-7 | identify-trapezoids | false | true | Is this polygon a trapezoid? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD4CAYAAADW4JEaAAAny0lEQVR4nO3deXxU9b3/8feZyZ5AEnYQlE1EthAwoNdqF+tyu4horbZel6LYglL5adUrlkJKxarVoijUUhWrtlatiFxraa/W6rUKAZE9SIQoCIZAVpJMkpk5vz9Cz8woQmCW7yyv5+Pho9/zTZjzfvQB8vbknPOxbNu2BQAAACAiXKYDAAAAAMmEgg0AAABEEAUbAAAAiCAKNgAAABBBFGwAAAAggijYAAAAQARRsAEAAIAIomAjYlZ8tEgPbrjedAwAAACjLAbNIBI... | [
"no",
"yes"
] | null | 0 |
math | pre-k | count-scattered-shapes-up-to-5 | false | true | How many shapes are there? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAE2CAYAAAAUKOa6AAAYIUlEQVR4nO3d/ZfXdZ3/8edcDzjoYAikoECO4aCCeMVZlDymJ7M0txTxuvbwdbswUFftux1/8vTtHKU0tLZSd1tMDckuvNr0u2obSqkoKOKQYYTgRQMYowwDw8x85vuDtdvX1dVyZl7vz+tzu/0DPObDL/d5zfv9+lT19/f3BwAAkIXq1AMAAICBI/ABACAjAh8AADIi8AEAICMCHwAAMiLwAQAgIwIfAAAyIvABACAjAh8AADIi8AEAICMCHwAAMiLwAQAgIwIfAAA... | [
"1",
"5",
"3",
"2"
] | null | 3 |
engineer | grade-6 | identify-the-experimental-question | false | true | Identify the question that Denise's experiment can best answer. The passage below describes an experiment. Read the passage and then follow the instructions below. Denise glued lids onto 16 cardboard shoe boxes of equal size. She painted eight of the boxes black and eight of the boxes white. Denise made a small hole in... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAEICAYAAAA0p80lAACZu0lEQVR4nO39Z6wt13keAD9rZnbv5fRze2cTi0WJEiXLcmxJLrJjWXLiIC6IihNLggEBQYD8yAf/SYAARuIIMJDkQ2IggZtsU7ZE+ZMt2ZIRkZRIiRLJS/L20+7p5+zepn0/Zr9rv7PO7LP35T2XvPdwHmBjt6lr1nrW25f47d/+bRchQoQIcQ/h937v996S8xoA8MUvfvEtOXmIECFC3Co++9nPvmXn1t6yM4cIESLEPYaQMEOECBFiTISEGSJEiBBjIiTMECFChBg... | [
"Do the insides of white boxes get hotter than the insides of black boxes when the boxes are left in the sun?",
"Do the temperatures inside boxes depend on the sizes of the boxes?"
] | null | 0 |
math | grade-2 | equal-sides | true | false | Which shape has 6 equal sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAH40lEQVR4nO3dz28TRxQH8O/u+ge2EwfbUktOcCgFqSoSoCoSgUD+8rRAkGhFK7VCIoUDqIekB9vEiW1sZ709uFVbWiC7M/Pmjf393BAkjLxfe3ffvLeOsizLjqbAqxFwkgJnGYiMlSJgPQGu1oHPK0B0NMmy7we+l0XLbKsJlF6OFn/YrADXGosUEpk6SYGDIXA4BX4dAfHgbPEXDBnZtJ4sMgUApykQp//4CyKb/srULANiv0uhVcGgkQgGjUQwaCSCQSMRDBq... | 0 |
science | grade-2 | identify-plants-and-animals | true | false | Select the plant. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAD7xElEQVR4nOz92a+m2ZXeif3WHt7hm84cJ6acyUwmk0ORrCqKtEpVrS61VFJLLbQMtNCwWhC6G/Df4DtfGL503/jO6DZgW1C3YTckyJDUUkk1qQaSRTKTZHLIjIzMGE7Emb/5Hfbki/1GZAlm21UdN22gPiCRMZw4w/euvfZaz/OsZ8m3Fym9NYap5s9ff/76n+VrFeCnG3jSw56Bv7ib/1z9eeD++et/7q+phrfG+dfr8Omfqz8P3D9//f/D61mcuvTpn5mf94F... | 1 |
math | grade-7 | identify-linear-and-nonlinear-functions | false | true | The graph shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABgN0lEQVR4nO3de3xU9b3v//dkJvc7CSQRTBC5KJigKCIIghurbm3dhbYb218v9ni6tz21t9/+7fPoYz/26eO0x+Ojv8eu3Y+61dPdc3qqPafn0V1/VVvFQFERMFSQCIEExYiQC5DLJJnJ3Ndc1u8PTEqEQCLry2TI6/mPzkzWOx/WmlnznpU1My7btm0BAAAAcERWugcAAAAALicUbAAAAMBBFGwAAADAQRRsAKNuu+02vfDCC6OX//CHP+jaa69VKpVK31AAAGQYCja... | [
"nonlinear",
"linear"
] | null | 1 |
math | grade-7 | simplify-expressions-by-combining-like-terms-with-algebra-tiles | false | true | These tiles represent the expression 7x+2x+3. Which expression is equivalent to 7x+2x+3? | "iVBORw0KGgoAAAANSUhEUgAAAU4AAABoCAYAAACe0Rn2AAAHLUlEQVR4nO3dQUxcxwHG8e+9XYrLQiAhYDtQu7YVJUDaClKwlIMVpbWUpKfKlxys9FAfIiWokYIvkXvhYJebLxwiublVja0gn9xKoVxctUi4wk0qTCuMxSo2bBeilTC7hrLzXg/UUa1gwuybXd6z/r/brrTzjebwaXbnwXhhGIYCAOyav9cTAICkoTgBwBLFCQCWKE4AsERxAoAlihMALFGcAGCJ4gQAS+m9ngAAbMfkxxQWZ52P62W6lGo/FW2Mnf5yaHp5XEulO5E... | [
"7x+5",
"9x+3",
"12x",
"14x+3"
] | null | 1 |
math | grade-2 | greatest-and-least-word-problems-up-to-1000 | false | true | Abby's classmates revealed how many science articles they read. Who read the fewest science articles? | "iVBORw0KGgoAAAANSUhEUgAAAacAAAC9CAYAAAAX1bLRAABIHUlEQVR4nO3dd1QU19vA8e/CLk0RUERFRVTEkqhglyhgQ2wY1Bg0wRIlaow1saVYEmP8qbHEvPaCMbGRKNYEYwHsioIdO4hRUVQQ6bD7/rE6sLLgLijF3M85e846c+fOveMwz94yM7Igr0kqBEEQBKGE8Ng+GzlA++H9irssgiAIgsCBZRsBMCjmcgiCIAhCLiI4CYIgCCWOCE6CIAhCiSOC01sgXmVAnbSqNE+rQrxK/JcKglD6iStZCbddacb3mRb5Bp0QlQlRKjk... | [
"Jamie",
"Wanda",
"Abby",
"Khalil"
] | null | 2 |
math | pre-k | fewer-and-more-compare-in-a-mixed-group | false | true | Are there fewer triangles or circles? | "iVBORw0KGgoAAAANSUhEUgAAAQ4AAAA2CAYAAAA273fRAAAJnUlEQVR4nO2dTWwTZx7Gn8Qe2+NJbcdxErubko8mVSKBirlxSFZoT4E9bHtAgtNS9Vo13JaqB3oo5QiHHnfLXhbtrrRBKwW0B1RvOEAPxEhkRUqifHS9cuI0ydh44vGMnfRgxg1pPjzjmfedmX1/FxQEvP/Hj3k8fr/+Lbu7u7tgMBgMHbTSLoDBYDgPFhwMBkM3XtoFHMW9zAoA4Hc9vZQr+SXp5TIAoCjvAADaArUMTvb5qdVEG+YXeWjparHrHMey9Ar9//wrAGD... | [
" circles",
" triangles"
] | null | 1 |
math | grade-6 | understanding-percents-strip-models | true | false | Which model shows 60%? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAVAAAABLCAYAAAAmjt81AAACJklEQVR4nO3XMU9TYRTH4XPbwoCgi9H4AdTNhYG9uzOfkVX3fgASFjfEXYxOFJqANK/DTRMTlbT/gLXmeZbbm3tv3jP9ctq11tr5TdWnWdV0XnXbCoDfGHVVe8OqlztVz7eruvPr1o4v1j0WwGY5eFw1Opv1Ny+2q14/6usKwK+m86rTq6rPN1UfZ1WDi9v+gXgC3G1v2LeyqupyXjWY//QAgLstWvm9VQ3WOwrA5hJQgJCAAoQEFCAkoAAhAQUICShAaLTqByf... | 1 |
math | grade-2 | compare-vertices-edges-and-faces | true | false |
Which figure has fewer faces? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAIAAAACACAYAAADDPmHLAAAKAklEQVR4nO2cb2xV5R3HP7e9JVjpwLIJTrnaSG/lj1DqFrf5wmzDqugMjBcEbrBF2V5IFkKoxtaRkYXL/rAOlvliCUG2vWBKMVu3wOYgTmWYSKS91NoAbZl0zIK0oEBLqef27MX1lKf037295znPc/58EkJ6z+05J5zP7/t877mXGzJN0zzXD229cCUJhkmAhwmHoCAXivNhxiQInbtumkcvqz6tABU8+CUIt/amfrhjEpTcmrIjwLtcScLJHujsh1O9kHPZSG0... | 0 |
math | grade-5 | three-dimensional-figures-viewed-from-different-perspectives | true | true | If you look at this object from the top, what will you see? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADSCAYAAABw17dKAAA3PklEQVR4nO3dbXzTBZ7++08pUgFpi8ChcmNbcKYuq7ZhZfRPlaaMjLCjtCgDDuhpCorc7E4TX4KyZ6GJ7I7cHZLuHkAGpc3g4rADUsBVGFka3OIfB5cEcRiYF0hquen+QSYUBCqtPQ9CfgNYsNC0Sdvr/Uhqm3yReXDxmyvfb0x9fX09IiIiIiISFh0iPYCIiIiISFuigC0iIiIiEkYK2CIiIiIiYaSALSIiIiISRgrYLcDtdtO9e3eys7Px+XyRHkdEREREmpECdjP... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA3gAAADSCAYAAAAYAWJbAAA+xElEQVR4nO3df1zUdb73/wdikpoMpl6SPxoQi9ZTwXjp5iXVgCc33UrRPOpqfhl0c83OOQx90/J8Vxlir5O/vjGc/aprmsCx1XXTFX+s6caRsVUvWzvOmK0r+8UYUpNzqTUioSTE9cfIrJYZygwfwOf9duvmijCfl8ofPvf9nPcrrKGhoQEREREREQmKsLAwo0eQ21gHowcQERERERGR4FDAExERERERaScU8ERERERERNoJBTwREREREZF2QgGvBRQWFtK9e3d... | 0 |
math | algebra-1 | match-exponential-functions-and-graphs-ii | true | false | Which graph matches this equation?
\[ y=-3\left(\frac{1}{2}\right)^{x}-1 \] | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAVUAAAE1CAYAAABX+HN0AAAdD0lEQVR4nO3df3BU9b3/8dfZ/P7VRCUJVEuMP0rKDwmiENSvXKxUoDCVWK6Vy235ZQdrnP4hM19wijj3VsEZy9erXH981avMMEXLj69jUESsoXWmCUhksdAb4EICIyYkoBsgkE2ye75/LLvJkgAJnN1zTvJ8zDjunj1nP+/NJi/O2XM+7zVM0zQb2qT/OSudDkgdpgAAvZRoSFkJ0q3pUn6yZDT4TXPnKbvLAgD3G/89KfHg2dCdIcnSsIxQ4gIAeud0QNrfItW... | 0 |
math | kindergarten | times-of-everyday-events | true | false |
Matt is eating lunch. What time is it?
Choose the more likely time. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAde0lEQVR4nO2de3SU1b33P88zM89M5pIZcpkkQAKSgEIggaMclaCWUwFr9axyqa72FPWc97SleljvWxU5S+sFb6cCatfyAl19V4sJtqfnFOnFVgE9vCqkVUCSmADCTEgIITOT2yQzk7k/z/vHkJCQAJlLLkI+a7HIPJe998z32fvZ+7d/+7cFRVEURwhsPeCJQkRhgisItQAmFczUQ44EgiOoKJ91j3WxJhgNbkwH9cme2Ic8Ca41xJ6GCa4cPFH40gctITjRA2J... | 1 |
math | kindergarten | addition-sentences-up-to-10-which-model-matches | true | false | Which shows 5+2=7? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAXYAAABKCAYAAACvkX8HAAAM6klEQVR4nO2dW2wc1R2Hf2cue9/YwbEdxw6xczEJTXBEGkVEKiWVyRsPCFKBBA9VpfIARYpEeeQ5tCo8tGrpC6qEVESr8gB9AUFBfWhVUAokAUpixRbOxY6zwfZe5j6nD+N1fNnsdc7u7On/k6xde2bOzLca/2b2zLkwzjmfs4GpEpD3AJeDIAiC6CI0BmRVYF8KGIwBbM7i/JPlTh8WQRAEEQbHtgDapVLwy1AMuCcdpD5BEATRPeQ94JsicN0GLpYAZdkNFlC... | 0 |
math | grade-6 | which-figure-is-being-described | true | false | Cora made a 3-dimensional figure out of wood. The figure had a round base. Which figure could Cora have made? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMwAAABSCAYAAAAYTjvBAAASE0lEQVR4nO3de1xUZf7A8c8gktwc8BcksgaTaayuAauiBr7ETNtCxdsalAq8EjJTgV1DklohQ1SKy6apQXGxrLQVIa0Fo8ZWVoVlmSx+Cf5WiBaUMGFABEHk98c0J5GLzDCA1fP+R2bOc57znXG+c57bOSNrb29vv9gC/3cVGtrgejuCIPzIWAaWQ2CsGdxjArKL19rb8+sHOyxBuPNNHQ7G565qHtiZwAPmmmwSBEGjoQ1KGuFCC5ReBaP665oNIlkEoTPLIZr... | 3 |
science | grade-5 | animal-adaptations-skins-and-body-coverings | true | true | Giant clams live in the ocean. They have a hard outer shell.
The giant clam is adapted to protect itself from predators with sharp teeth. It can pull the soft parts of its body into its shell when attacked. Which animal's body is better adapted for protection against a predator with sharp teeth? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOy9d7xcRf3//5w5bXdvzU2BJCRAEkKLBCJIE6SIVBEUUAiIgIBSBLFQfp+PfBAFFAQFQxepiqIU8SNfqlKCGAghUqUkhBAS0m7ddsrM749T7u7evSXhJpTPeeVxsrvnzJmZM+fs3te85/V+v4XWWvu+j1KKFClSpEiRIkWKFClSfDwhpcQ0TYTneTol9ylSpEiRIkWKFClSfPwhpUSm5D5FihQpUqRIkSJFik8GlFLID7sTKVKkSJEiRYoUKVKkGD6kBD9... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOy9ebwdRZ3+/66q7rPcPblZSAKBkBACRDZBBBVFVBYVlwEVEVEc3HDBFfH3HWcQd1RURBaREYQZHGYQxJcOCCgKiBEIu8gS1pB9uetZuqvq90d19+k+59wlyYWg009enXNOL9XV1dV966nnswhrrQ3DEGMMOXLkyJEjR44cOXLk+PuElBLP8xBCbO+q5MjxDwmZE+ccOXLkyJEjR44cOf7+YYwhDMPtXY0cOf5hIXPinCNHjhw5cuTIkSPHPwbysX2... | 0 |
science | grade-4 | animal-adaptations-skins-and-body-coverings | true | true | Short-tailed weasels live in cold, snowy areas in Europe. The short tailed weasel is adapted to be camouflaged in the snow. Which animal is also adapted to be camouflaged in the snow? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOydd7xdVZX4v6ffXt99vb+X3gsJNSShR0RUQBBFwTaiYhlR1BlnlHGYUceuqFhAUUEQpCgSiiQkIaT3ntd7ue/2curvjxveEGrAKI6/+/187ue9e885e69zzt77rLP2WmsLjuM4pmli2zZlypQpU6ZMmTJlypT5v4koisiyjGAYhlNW7suUKVOmTJkyZcqU+b+PKIqIZeW+TJkyZcqUKVOmTJl/DGzbRnyjhShTpkyZMmXKlClTpszJo6zglylTpkyZMmX... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOzdd9wtV13o/8+aXnZ/eju95aR3SkilJURADTWIAupVRAREyr1e7kVEvUp5CQICiiDlKmAQQSABAoH0dpKc5OSUnP6c8/Td9/RZ6/fHTh4JSeAAUa7+9vv1Oq/k2Xv2zNozs2bPd63vrCWUUirLMqSUDAwMDAwMDAwMDAz856RpGoZhIIT4eRdlYOC/JG0QOA8MDAwMDAwMDAz85yelJMuyn3cxBgb+y9IGgfPAwMDAwMDAwMDAfw2De/uBgX8/2s+... | 0 |
math | kindergarten | cones | true | false | Which shape is a cone? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAARKElEQVR4nO2dXWwc13XH//fO7HL5sfwQP0JJtkw3EZM6VYkotSSjkIWgVoNIEFwHTVAUrvoSBQXaJGibpzZ+ivvUFnFrtGjg+iXKQ5AESGqDKprID5GQ1mIbCVKaKhbtyrKokhRJieSSS+7uzNw+3P2YWa7I3eW9O3dmz+9BO5y5O/docfbu+d9z7xkmhBBzeeDdLJBxAUeAIIzDZkDaAg52AR9KAmwuJ8TUathmEUT9HO0F7Oms/GNvEvhot/RqgjCNjAu8sw7... | 2 |
math | grade-4 | angles-of-90-180-270-and-360-degrees | false | true | What is the measurement of this angle? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABQCAYAAAAjrwKZAAAGMklEQVR4nO3dP2zU5x3H8c9FWTCBMAQpDPV1wFWQAKU4W+xb7dh0CFJjBagaBTXEoCTtFFIYgcCWDsGJpaAMaRCpBAt/O9p0NKlwJKo6Q8+LkcwAhbrjdbDjgBK7Ln3gOO71GqzT/bG+9vS+R8/v+VUajUYjAABAEU81ewAAAHiSCGwAACjo6WYP0EznxibyzbfTmfx7PZNT9dy+O5ctXdX0bNuUzuefy0Bvd9at6Wj2mAAAtJBKO+7BvnVnLvuPjOb8+MSy79vS1Zm... | [
"90°",
"180°",
"270°",
"360°"
] | null | 2 |
math | grade-1 | which-table-is-correct | true | true | Max looked in the pastry case at the local bakery and saw:He couldn't decide what to eat, so he made a table of the items at the bakery. Which is his table? | "iVBORw0KGgoAAAANSUhEUgAAAXgAAAD7CAYAAABgzo9kAACZIUlEQVR4nOy9e5Qm513f+al66l7vra/TMz33kUajiyVLlizLtmwLixhbdrDx2eBAcA7ZBLNAsueEcBZYwBzIgRwOgQAm5rBLnDXxro2BQPBGNrAg2RKWbd1tSaPRZTS3np7py3ut63Op/aN6RlJsC0mWekYz9fmnpZ7ut6qeft9vPfV7vr/vY/3iL/5iRUNDQ0PDBYcD8NGPfvRcn0dDQ0NDwyuMfa5PoKGhoaHh1aER+IaGhoYLlEbgGxoaGi5QGoFvaGhouEBpBL6... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAq8AAAD7CAYAAABE4X1VAADyBUlEQVR4nOzdabglV3nY+3/VqnlPZ+7T8yS1WjMSmkADEoMxlgjGfnIh+EJCroN848R5HjAJtjFgkwc7trGNDZYTsHEg+Epg7BBwQECwBBII0AySWq2h59On+wx7rHHVWnU/1OkWMmA0dqu71+/L6d6nzq6qtad3r3rX+1rve9/7KgzDMIyTzvve977jfQiGYRjPOQfgve997/E+DsMwDOM5ZoJXwzBORvbxPgDDMAzDMAzDeKpM8GoYhmEYhmGcMEzwahiGYRi... | 1 |
science | grade-5 | compare-properties-of-objects | false | true | Which property do these four objects have in common? Select the best answer. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADQCAYAAAByQhWRAAD23UlEQVR4nOz9d5wc2Vnvj7/PqdB5clLWrrTa1Wpz8jqsbbxeB2yMEzZgMJgLGH7ANfgCX4y53Eu4wOWCiTZgg3ECB5zTrr322uuN3ryrVc6jyblzdYVzfn+c7pme0UgaSSNpJNVbr1Z3V1VXne6prv6c53zO8wittQbwPI/h4WEKhQJhGBITc76xbZuWlhZWrVpFMpk8q8eKz/+YlUZ8/sdcysTnf8ylzHKc/0JrravVKgcOHGDDhg0kk0kcx1nmpsbEnDpBEOB5Hoc... | [
"smooth",
"fuzzy",
"soft"
] | null | 2 |
math | grade-7 | nets-of-three-dimensional-figures | true | true | Which net will make this figure? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAAQTElEQVR4nO2de1SUVb/HPzMDA3IR5A5hoyZ3kUTNCy7RV/PynvSEl8o0LweP9lrnON6SZVZjulZaK8TVWqkgSWqp+fqmrc5ZWhFYL5GaicplEENQLgLCDA73yzznD47ziqnMDAMMMJ+1+APm2Xv/mO+zf3v/9m/v5xEJgiBgwWwQ97QBFtpjEcTMsAhiZlgEMTMsgpgZFkHMDIsgZoZFEBPwxRdfMH36dM6cOdP5ygQLRpOZmSlMmjRJAARA8PX17XSdFkGMoKqqSli... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUkAAAC+CAYAAAC4av29AAAgTklEQVR4nO3de1jUdd7/8ecgBwUUxCMEHhCQg8amFpneotUW7t5ablp2MO3WltTdnyfMMi0S1/T2lPvbSFPT1VoxczNqy7WD6GpKnkBlOCmiIoggDoIDAwNz/zFBojgKzPCdgffjury4omHmzQXz4vM9vN8fFWBAWA2DwcDlCjijhZIq0MtPR4hmZa+C9m3A3xm6OYIKCUmrclln4OfrSlchhAAI6wD2Shch6srUGj96OkJfF+NfNCFE8ympgvQbkFcBGVqwU7o... | 0 |
science | grade-5 | compare-magnitudes-of-magnetic-forces | false | true | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | "iVBORw0KGgoAAAANSUhEUgAAAfUAAACtCAYAAACp4uY/AAARtklEQVR4nO3df2xU5Z7H8c/ptOP0h5RCVTpWL8jws+pVoGItewUUpa54MVrZbFyFy7Lg1vpjg4grEhNqAggisAGiBoRFhUsAg4qbiIKNVaQ0UARWpIWKta3s0h9Y7AAznf2DtHsrFNrOTM/06fuVNOmcOed5vvPknPPpczpzxgoEAgEBAIAuL8ruAgAAQGgQ6l3Y/v37ZVlWix+n06nBgwdr9uzZqq+vb1d7jz76qO69994O1fLdd99p8ODB6tmzZ4e2BwAEL9ruAhC... | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 1.",
"The magnitude of the magnetic force is smaller in Pair 2."
] | null | 2 |
science | grade-4 | compare-properties-of-materials | true | false | Which is the hardest? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAB41ElEQVR4nOz9ebBlWXbeh/323me6833zy7Hmqu6u7sbUAEGCAMGZFE1TliWKliWFZIYs2iGHTdmWraClcDBoSyE57DBNUgqLFGnApAQSJE2IBEkAIhtjD+ju6qquuSorK6c3D3c89wx78B/r3PsyewAaZGdmdXWviKqsynx5h3PWWXutb33rW+rXxyG80IGe4bv2XXukNnXw1hz2K1iL4HcO5ff1dx3yu/a4rGfghY7898xd/L7+rkN+1x6nLf2vDhe/px/PR/m... | 2 |
math | algebra-1 | domain-and-range-of-square-root-functions-graphs | false | true | What is the range of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABnL0lEQVR4nO39fXxU9Z3//z/nKteBhASSEEkQERQkKAoWhIrFqtXWFnqB7adV+3Pb2q21289nu9vvbtvd7fpxu9urT111u+66ane7261btRUaKFYUClUkQiAREQMEAuT6aiZzcebMOb8/YihRkATOm8mQx/0fbhlynnnlnJn3ec077znH57quKwAAAACe8Ke7AAAAAOB8QoMNAAAAeIgGGwAAAPAQDTaAYSorK7V169bjXx84cECTJ09Wc3NzGqsCACBz0GADGKampkb... | [
"$\\{y \\mid y>0\\}$",
"$\\{y \\mid y>1\\}$",
"$\\{y \\mid y \\geq 1\\}$",
"$\\{y \\mid y \\geq 0\\}$"
] | null | 3 |
math | calculus | find-limits-at-vertical-asymptotes-using-graphs | false | true | The graph shows f(x). The dashed lines are vertical asymptotes. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AACZV0lEQVR4nOzdeXxcdb0//tfsM9m3NknTNt0DLW2hGw20UKRCBamCcAHFotfrFa8oeq9+Rb9X71XR60/FFRX9iiziVUERSkuBStOFlG6Bpm26JE3bNEuzTDIzmf3MmXN+f0xm0rRZZibn5MxkXs/Hg0fozJn3vHMyc/KeTz6fz1sny7IMIiIiIiJShF7rBIiIiIiIJhMW2ERERERECmKBTURERESkIBbYRBlkx44dmDVrFm6//XatUyEiIpq0dFzkSJQ51q9fj49//ON... | [
"$\\lim _{x \\rightarrow-2} f(x)=-\\infty$",
"$\\lim _{x \\rightarrow-2} f(x)=\\infty$"
] | null | 0 |
math | grade-2 | read-a-calendar-ii | false | true | What date is 2 days after September 22? | "iVBORw0KGgoAAAANSUhEUgAAAssAAAF2CAYAAACYtNXtAABfFUlEQVR4nO3deVxU9f7H8RcD4g4KCLiLKy6Iay5Ipqm4tph502tZamXZqtflUlr9yrxpy9UW7ZbllktqKWqKooFiaq644Yob4o6gyKrD7w9ikuDYoMAAvp+PR49kzjnDZz6cOfOec77nHLv09PT0vVfCOBi7maspFxARERGRe1expAeNXPxo6trR1qXIPbCLuByaHptyhtYevShhXwJIt3VNIiIiIkWcHWm30vj9/CpcS1ajqdtDti5I7pLpYOxmHvDoSQl7BxSURUR... | [
"September 24",
"September 23"
] | null | 0 |
math | grade-8 | similar-and-congruent-figures | false | true | Are these shapes similar? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD5CAYAAAAdvEK/AAA/iklEQVR4nO3deXib5Zku8FuS91WSbdlJbMuync1bKCQmpNgkAQITEkrK0tBetGSgbYCZwABtw4TSYSnNnLa0UGh6gMKUQ2GAMCEsE1K2xA5bAMeWbEOIbXlf5EXyIm+xpfPHJ8lWvJNP+rTcv+vypSVaXtXCffTq/p5HZrfb7SAiIiIiIlHIpV4AEREREVEgYYFNRERERCQiFthERERERCJigU0B6fDhw9i4cSPi4+OhVquxbds21NbWSr0sIiIiCgIssCngPPbYY7j... | [
"yes",
"no"
] | null | 0 |
math | calculus | identify-graphs-of-continuous-functions | false | true | Is the function f(x) continuous? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AABw+klEQVR4nO3de3xU5YE//s/cMjO5hwSSCCSI3AwSbnIJEsBKK4q1hopota3W7W/b9dpvuy9r1+1326KrW7VfW23dvlbFrm0Vq3gBwkUJJCaGQIAAUTBGyAXIZZJJMvczM+f8/ogTE64TeJ7MTPJ5v1772iaZ+czjMHPmc555zjk6TdM0EBERERGREPpID4CIiIiIaDhhwSYiIiIiEogFm4iIiIhIIBZsohFkx44dmDBhAlauXBnpoRAREQ1bOh7kSDRyLF++HN/97nf... | [
"no",
"yes"
] | null | 1 |
science | grade-6 | identify-elementary-substances-and-compounds-using-models | true | true | Look at the models of molecules below. Select the elementary substance. | "iVBORw0KGgoAAAANSUhEUgAAAN8AAAAiCAYAAADf9QzrAAAH2ElEQVR4nO2cT0xT2R7Hv8VexEIpl4WZBHoDGpW/RZsQmSG6MEbFJ4GYuGBhYkJlhLwYU1xIRkAnDCDJ0FkIk2fKVlyCkCgs3PgaMxkl0FL+bAhexDiD0j88GvAivAVTp28ovf+OvZ2880m64ZzzPb+T8O05/Z0/uq2trS1QKJS4k6R1ABTK/yvUfBSKRlDzUSgaQc1HoWgENR+FohHUfBSKRujVNF5bW4MgCFhfX4cgfAQAMEwy9u7dC4ZhkJKSQiTIeDM2NoaFhQX... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAY4AAADMCAYAAABk40SvAAAlwElEQVR4nO3de3RU1aE/8O+ZdyYvkhAMCYlEkCRAiBBQKmCV8igi1V/Ft7VWUAvLtoosW71atMVqu1YFtdZW8Xm92OpdV6h2KagVyEX08gqEN5RgCDEPkslzMjNnztm/PyZzMpNMHieZZCbh+1nrrMmcc2bPPiHMd87e++wjARAgokG3u0EgJxaIN0a6JkShNSnA8RbgWw+QZAJmj/CtN0S0VkQXMIYGRbt4o+/vFACalfb1DA6iCGFo0FDg/zuVA9qmGBxERKQ... | 1 |
math | algebra-2 | linear-functions-over-unit-intervals | false | true | How does g(x) change over the interval from x=
–
5 to x=
–
4? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB1RUlEQVR4nO3de3gT950/+vfo4ruNjS8yGCxDCKQQm6u500AhgWBDA0mWNNt2002TQJru057t9pfT7fb32z1pNufZXk7TBAhtN0m7Pdtfc0KTYGMIhGuhweCAwYYQAli2AdmSLduSdRlJM+cPx64dLpZgvh7Jfr+eJ08roXn74xlp9NHHoxlJVVUVRERERESkCYPeBRARERERDSdssImIiIiINMQGm4iIiIhIQ2ywiShiH374IebPn49gMHjDf3/77bexZs2aIa6KiIg... | [
"g(x) increases by 2",
"g(x) decreases by 2",
"g(x) increases by 200%",
"g(x) decreases by a factor of 2"
] | null | 1 |
math | grade-3 | open-and-closed-shapes | false | true | Is this shape open or closed? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAALlElEQVR4nO3dMUybdx7G8adVFyO/QYJbQPZqSxQJIqKT4BYqqNLqgoeLFEdhASkQ1A5Nizt0KChkuCFwTYarkoAUlqA6UjOY6EJUECznDEeFI9mVXtY3cpe6kv1W9sgN2E5ISTBg8+LX389IhPOD6eGv3//5v7ezs7MjAAAAAFXxvtMDAAAAAG7ygdMDVCL+aFnxaEzb8U35PwzK02wo2HdOTWcM+TuDavW1qdXf7vSYAAAAgN47rSsi+aytxLMNLc/eVcZKV/Q9hG8... | [
"closed",
"open"
] | null | 1 |
science | grade-5 | predict-temperature-changes | true | true | Two identical blocks are heated to different temperatures. The blocks are placed so that they touch, and heat begins to flow between the blocks. The pair of blocks is insulated, so no energy escapes. Later, the temperature of each block is measured again. Which pair of temperatures is possible? | "iVBORw0KGgoAAAANSUhEUgAAAQQAAACgCAYAAADq8hJGAAAVOklEQVR4nO3dfXBddZ3H8ffvPNzcPDRJ06ZJ6ZOFtlRbKZRSBJ1FWcURdFZWmR11FxUXkN1RcUBcdFeQFcGndVR82BV0B0VdZxFhfGR3Z9GlSAultLQ0BVpIn5vn5/twHn77x+/mJCFpetPc5Jwk39dMJ73nnnPu7+Z387nnfM/vnKO01hohhACsuBsghEgOCQQhREQCQQgRkUAQQkQkEIQQEQkEIUREAkEIEZFAEEJEJBCEEBEJBCFERAJBCBGRQBBCRCQQhBARCQQ... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAiAAAAC4CAYAAADaI1cbAAAfdUlEQVR4nO3deZwcZ33n8c9TVd1zamZ0jEa3kHUSC9+WwfBajuUIJt7FHNkXkHWAcIcQsxAb1gEMy+ElISwESLLYJC+CISHLYY5k8bIbSJCD5VO2ZN33PYdmNPd0V9Wzf1TPpRmNeqTuquqe7/v18mtc1VXVT+t55je/qvrV0wawiIgA1lpO52D/IPQF4Cs6iEiJeAbmubC+HtqyYFACIiIFp0cs23qTboWIVLubmsBLuhEikh77BqOfS7OwsSE6WxERKYW+APY... | 0 |
science | grade-3 | compare-temperatures-on-thermometers | true | false | Select the thermometer that shows the higher temperature. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHEAAAFICAYAAABnfBEBAAATW0lEQVR4nO2dbYwbdX7Hv+OH3TzszF2qhDx4xGMhNpUoUZAHqWqRwAYEd0BcKqFqwXnRVwYjcfdiTba6ShVOHamUSlb31Un1ZvfF6aTaKKdrOa2PqHD0NL5uaaSKCVCkvphhcxxcFDvZrB+nL7we7H1y7J1xdn/z+0irXc/Y43/0zXf+D/769xdM0zSv1ID/XQYqTaBhgtnh+ARA9AL37wMOjwHClapplsq3u1nMsCgS4Pt8uf3g6BhwfH9bYWZnU2kCn94Almr... | 1 |
math | calculus | identify-graphs-of-continuous-functions | false | true | Is the function f(x) continuous? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AACBkklEQVR4nO39eXiU5303fH9nn9E6QhKSEEjs2MIIDBabwdixY2OTOAbHsdNmce4md5tma5+2T9I+efO+bUmap22SO62TumldO2nSJCbewbKNgwxYGAQCBBKbECAkhJaRRqNZr/39YzQCGQlmNNelGY2+n+PwIRhd853TQnPOb875Xedl0jRNAxERERER6cKc6gEQEREREWUSFthERERERDpigU1EREREpCMW2ETTyJ49ezB37lxs2bIl1UMhIiLKWCae5Eg0fTzwwAP... | [
"yes",
"no"
] | null | 1 |
science | grade-3 | identify-rocks-using-properties | true | false | Select the one substance that is not a rock. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAANcAAAEYCAYAAADPtGNgAAC8DUlEQVR4nOz915dl+XXfCX6Ot9fb8BHpqrKqAMKSIEFKFCVKLWk4rW6x5039qGf9QzPzPmuWXno4M6JEidLQwaNQqKzKysjM8HHjene8m4ffiVtZRYAEKVQhAcVeK1eYjLgRce/ZZ//23l8jfWdRFG84UFG4i7u4i79HrDJ46sF1DA0VfrsuPi/fJdZd3MV/X1QUeMMR76+zjz8v3yXWXdzFf3/c5lFSfPw5+Rfzq9zFXfzqx11y3cVdfEZxl1x3cRefUdwl113... | 2 |
math | pre-k | squares | true | false | Which shape is a square? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJsAAACaCAYAAAC+PTopAAAEEklEQVR4nO3aS1JTURCA4c6LAYLOFBegTp2xDHboHtgGO0CcG6cEUgUSr4MLyiMJ996cRz/+b4RFpapP918ZUI6apmnmtyI/liKLlchdI0AS05HI4UTk077Ihz2R0fymac4ua48F747fikwvlu0/Pu6JfHnTlgiksFiJnF+L/LwV+b4UGV/etb8gNKR2OGm7EhG5WomMV49+AaT20NXvRmRcdxREQmwohthQDLGhGGJDMcSGYogNxUz7fuB0vpLT+Z8cs8CQb19... | 1 |
science | grade-3 | identify-plants-and-animals | true | false | Select the animal. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADeCAYAAABL7FARAAEAAElEQVR4nOz9aYwlWZbfif3uvba8fffdPTzWjCX3yszK2qt6qyZbzUUcaiEpcAaENggSQECAIH0UBvNBkARhhNFAkAhiRIECCWqEbjbZZG+s6q6qrqrcIyMjMnbft/fc377ZM7N79eGaPfdMJskqpj6MAFoiMjye2zO7ds+55/zP/5x7TLzbM+ZmHoqK/3D8h+O/kccghkcjOJpB1YFvVezn8j8o7n84/pt+FBXczNufh/H55/I/KO5/OP7/4Uj1NDTnnzlfdOL... | 2 |
math | grade-8 | compare-linear-functions-tables-graphs-and-equations | false | true | Function A and Function B are linear functions. Which statement is true? | "iVBORw0KGgoAAAANSUhEUgAAAjcAAAGlCAYAAAAGbtd7AABW70lEQVR4nO3de3xT9f0/8FeSNk2b0BZKWwptaQsWUJDigBYFKkVEvHznhYu6IbopbpNNnZfvphte5mU6FKaC/PCOsqkdGwoq+l2RiWKpl4FVaEHSQktpCqUhTU/uOb8/WLIG2ibtOelJ0tfz8fDBI6effs478Z1P3znnnXNUoiiKICIiIooRaqUDICIiIpITixsiIiKKKSxuiIiIKKawuKF+9dxzz0GlUnX735VXXql0iAHy8vKgUqmwadOmft/3rFmz/K/Lu+++2+/... | [
"The y-intercept of Function A is greater than the y-intercept of Function B.",
"The y-intercept of Function A is less than the y-intercept of Function B."
] | null | 0 |
math | kindergarten | count-corners | true | false | Which shape has 4 corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAHJUlEQVR4nO2dzWtUVxjGn5nMhMSPTBU/JgSDCZjoohZbqkhp6ar/Q5ddtX9Bt1105b6LdlXoxrVIF64qlUKxIAilYOKiEMTUhUjiBIxObxfHodr6dc8978c59/mByCQ5M5d7frzvvc/ce0+nqqpqcxe4vQNsj4EnFQhpTK8D7J8CTuwBjk4Dnc1HVXV9y3qzSMmcmwN66zvhxfw0sLo3WEhIU7bHwK0RcHcXWNsBultPwi8oGUnJ/qngFAA8HAPd8TO/ICQlE6c... | 1 |
math | kindergarten | fewer-and-more-compare-in-a-mixed-group | false | true | Are there more squares or triangles? | "iVBORw0KGgoAAAANSUhEUgAAAeYAAAA2CAYAAAAS2jpUAAAEW0lEQVR4nO3dQWscdRjH8d9kd7ObxNAmalRaaYSA0DfQk6Un34TSl5CTxauH9A2oJ/EkXu3BQwO9mPTWHnsoSguag4JSiiFgsolxPIQQknazs9n/zOzzm+/nHDrP99B9mGzpk+V5ngsAAEyEqboHAAAAJ1jMAABMEBbzGYfPNvXvkx/rHiM5umJx7QIwXMZ3zKftrPYkSW988bOyxeV6h0mIrlhcuwAMxxvzAP37a3WPUAq6YnHtAjAYi3mAg8ff6/DZZt1jJEdXLK5... | [
" squares",
" triangles"
] | null | 0 |
math | algebra-1 | perimeter-and-area-changes-in-scale | false | true | Look at this rectangle: If both dimensions are halved, then which of the following statements about its area will be true? | "iVBORw0KGgoAAAANSUhEUgAAABgAAAAOCAYAAAA1+Nx+AAABMklEQVR4nN2UsaqCYBiGX/NALQ2RIC3iJnQDDq6BLQ2tBYG4eAGFbm3qLYg34ZhzITh1B26tuTRIoO8ZzkEITocT2HIe+IYXfv4H3g8+gSTxRnrv/LwVeJ4HQRAeZj6fdycAANu2QbKdw+HQreAVJEnCdrvFdDrFaDSCbdtIkgS6rmM4HGI2m6Esy6/HJOm6LkVRpCiKnEwm3O12rOuazxiPx1ytViyKgkVRUJIk6rrOPM95vV5pGAbDMCS/62ipqoqn04mKojAIgl8... | [
"The new area will be 4 times the old area.",
"The new area will be\n1\n2\nof the old area.",
"The new area will be 16 times the old area.",
"The new area will be\n1\n4\nof the old area."
] | null | 3 |
math | grade-8 | front-side-and-top-view | true | true | If you look at this object from the front, what will you see? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFWCAYAAABTgeowAABX40lEQVR4nO3de1zUddo//tcwyKAchjSFFAWCbrj1jgG/qbm6jmQL5S9F81AmIupqmYYQWd1tKh7abSsENHUNVEApU2jRjtqtguHmRqsDrAYKOeShodQdTgrIML8/xvkEchpghpmB1/OfXYfhMxex++j1eXt9rkuk1Wq1ICIiIiIio7AxdwFERERERL0JAzYRERERkRExYBMRERERGREDNhERERGRETFgE5mYQqFAUFAQvLy8kJqaau5yiIiIyMREnCJCZBpqtRrR0dF... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6AAAAFWCAYAAAB3kfCcAABg4klEQVR4nO3de1zUdd7//8cAAokCaQl5CEi68KtXjHh12FYvkeyS8reKrYcyEUmzsoNKrG1Xm4qH9tqtUMzMLQ8hSrmKLdpRWxOKNjdbHXBtRWEdSg1L3QHRgBjn98fIrCcQYWAYeN5vt72ZMHzmRcTe5jnv1+f1MthsNhsiIiIiIuIUBoPB1SWItFoeri5ARERERERE2gcFUBEREREREWkRCqAiIiIiIiLSIhRARUREREREpEUogIo0M5PJRExMDGFhYaxZs8b... | 0 |
math | grade-4 | multiply-unit-fractions-by-whole-numbers-using-models | true | false | Which model represents the product 3×
1
12
? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHoAAACOCAYAAAD+WhzrAAASb0lEQVR4nO2dfXATZ37Hv0KGkylUMtdpZG6mkt+OmebGlrkC/9iWbcYmJSHWlLowvd7hjoEkcwTbdyS1p7SeC1DchkRK4ObOAx0MubsanIuFMUfGDrWM1Mnk5WLhOSbhYuM1ncZO0uIlcODkzP36x/KstbYka6VdSWb3M6PB1mofPd7P7vN73jEQEU1+BYzcBW7fB2YIOg8BGQZgpREoWA48sgwwTH5J9O4Xqc6Wjpps+GMg4+O7wi/Zy4A1fyTcBTqLn9v3gWu... | 1 |
science | grade-4 | predict-temperature-changes | true | true | Two identical blocks are heated to different temperatures. The blocks are placed so that they touch each other. Heat can flow from one block to another but cannot escape from the blocks. Later, the temperature of each block is measured again. Which pair of temperatures is possible? | "iVBORw0KGgoAAAANSUhEUgAAAQQAAACgCAYAAADq8hJGAAAYbklEQVR4nO3daXAk533f8W93z9VzYQYYAItzsUvucikeWpEiLcpLHZQoUmVZtOWSGSlRuaxyyk6lYrucRC9MJZVKFLucVBI5qYqs8kHJlyjJormkJIo0dYcmpaVlrimRWi52F+fgnvuePvKigQaxg8ViF0cPgP+nikWyMTN4Bk/Pr5/+9zP9KLZt2wghBKB63QAhRPuQQBBCuCQQhBAuCQQhhEsCQQjhkkAQQrgkEIQQLgkEIYRLAkEI4ZJAEEK4JBCEEC4JBCGESwJ... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAiAAAAC4CAYAAADaI1cbAAAk6klEQVR4nO3deZAkZ3km8Ccz68q6uqq7unv6nJ7RXBpdgxACgQRGICSCQxgHyMLLOiDsMIQD78YuxrEW3t3YxXbYG7sL3gizxC4LGGPEIdBoEEJC4pKFRsyANehiNDM9fd9dd2VdmfntH9ldPX3XzFRnZlU/v4iJlqrr+Lq/7LeezHzzKwmAABERACEEZirAeQ3IGYDO6kBEDeKRgIgCHAwC3T5AAgMIES2ZKQv8Iuv0KIio1b0+CnicHgQRucc5zfra4wMOh6y... | 0 |
math | grade-6 | quadrants | true | true | Which shape is in Quadrant IV? | "iVBORw0KGgoAAAANSUhEUgAAAfkAAAH8CAYAAADSe9ZXAAA300lEQVR4nO3de3BU92H+/2dXi4QkJCEhQAgL+cbFxjLmYu4iJpgpNi6+Mv7ytZN47GZKZjJ4Un8zP5emmdQTU2c6TmziuA2tx6SNk4wZ3DQEXALGIAtjLAggQFAgiQALgSRWlxWr3dVefn+oqyCQYAU6e/Z89H7NZIY9Wp3z5OPVefZzztmzrlgsFhMAADCO2+4AAADAGpQ8AACGouQBADAUJQ8AgKEoeQD65S9/qd27d3c/DofD+v73vy+/329jKgA3i5IHDLd+/Xq... | null | [
"iVBORw0KGgoAAAANSUhEUgAAApcAAAH8CAYAAACEt4SVAAA+AklEQVR4nO3de3BU92H+/2cvSEhCEhIChDAovoCwsczVgAQiJpgpNg6+Mv7ytZN44mZKZjJ4Un8zP5e6mdQTU2c6TmzqpA1txqQTJ6kZaBoCLgHbIItgLBxAgCCAEwEWAkmsLitWu6u9/P6QV0bowi6co7Nn9X7NeOw9Wp198snR2Wc/57KOaDQaFQAASDkOh8PqCBiGnFYHAAAAQOqgXAIAAMAwlEsAAAAYhnIJAAAAw1AuAehXv/qV9u3b1/M4FArp+9//vnw... | 3 |
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? | "iVBORw0KGgoAAAANSUhEUgAAASYAAADECAYAAAAyP4znAAB3NUlEQVR4nO29eWBc5Xnv/3nPjDTaN0teNHhBNvESAzZmJ4gAwYaQXLaGLQGS3NwCae5NCc0vkJA2tIbg5BboJReStAnNQqAF1zg3DeAAAZsUvIEBbwTvlmTL2qXZZ877/v5437OMJNuSrc1ivik9PqMzM+ecec/zfJ9dKKUUOeSQQw5jCNZon0AOOeSQQ28ER/sEBoLGaAtbO/ZwMNbBwXgbB2PtdKei1BRWMKmwislFVdQWTWB+VR2VodLRPt0ccsjhOCHGoimXkTY... | [
"green",
"black",
"neither; black and green are equally likely"
] | null | 0 |
math | precalculus | identify-graphs-of-continuous-functions | false | true | Is the function f(x) continuous? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AAB33klEQVR4nO3deVyUBf4H8M+cDDcICIiCNwqBiaLikZZWpmVpmd3Xbltt92673bXb2rGdW9mxbVZ2bIelHSqZJopBiqKi4I2KIHIMDMPczxzP749+sOI5yPPwDPB5v169XjE885mvw8wzn+eZZ55RiaIogoiIiIiIJKFWegAiIiIiou6EBZuIiIiISEIs2EREREREEmLBJupB1qxZg/79+2PmzJlKj0JERNRtqfghR6KeY9q0abjxxhtx8803Kz0KERFRt6VVegAi6hy... | [
"no",
"yes"
] | null | 1 |
math | pre-k | represent-numbers-with-shapes-up-to-5 | true | false | Which group has 5 squares? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAEcCAYAAAAV9AvgAAAEoklEQVR4nO3WMW4cdRyG4d+u1y5CkgqBOABQp0rnG3CRHMgHgRukTOM6hB4jqOzEUoxXQ7GKRJWCWO9Yy/M0M6PRSN80r/6bZVmWq7uZ325nbvYz98sAPIjdZubZycz3T2a+PZvZXH1cljfXa88Cjt3L5zO7d7eHh+/OZn786lAjgIdws595+2Hm97uZX29nttf3hxdiAzy0ZyeHtszMvN/PbPf/egHw0D615e9lZrvuFOD/RHCAjOAAGcEBMoIDZAQHyAgOkBE... | 1 |
engineer | grade-6 | evaluate-tests-of-engineering-design-solutions | false | true | Which of the following could Belle's test show? Belle rode to work on her bicycle. She read that thinner bike tires could make bikes ride more quickly. But thin tires could also make her bike ride less comfortable. To decide which tires to use, Belle picked out three types of thin tires at a bike shop. She put one set ... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAEICAYAAAA0p80lAAEAAElEQVR4nOz9WbCla3rXif2ed/i+b017zunMdYaaVVWSECpVYTVISLRomjZNEG7jvnOEAwcXjvANbd8YR9gRjsBgwBduA2HcTCYaCeQGJBBIKiEJVKpRVadODafqjJl5MnfmntZewze8gy+ed629TxWCMO7mlCP4IvbJPDt3rtx7rW897/P8p0f+9J/+05n/cP2H6z9c/+H6/6PrL/yFv/Ce/LsOoLnzy3hv8d4iJpEZyDmAS1gr9GGgaRqmkz2aZozYCsEi4hARVpc... | [
"which tires would be the most comfortable to ride with",
"which tires would make her trip to work fastest"
] | null | 0 |
math | grade-8 | perimeter-and-area-changes-in-scale | false | true | Look at this circle: If the radius is tripled, then which of the following statements about its area will be true? | "iVBORw0KGgoAAAANSUhEUgAAACoAAAAUCAYAAAD7s6+GAAACJElEQVR4nO2WT0iTYRzHPxt7JRJ1NeZqjknDJjMYpYihMbYUQcb00CWJIhCGw452GEr/Ll4mMkHw4hDMQ2SRMRAUfL2UJInZAyYevAUZ6MnWPMivQxS9jGKHF0LY5+G5PM/3+T2f54EHHosSJZwArP9boFhKomZTEjUbU0WnU9O017TTdqaN4bvDHOWPTKttM6vQ6tIqo/dHGUwN4g/6iXfG8V70Eh+Km7OBEiWBKwFx1bgk0hOR4NWgqD+aw+UQwNBD0ZAho0RJ4mF... | [
"The new area will be 9 times the old area.",
"The new area will be 3 times the old area.",
"The new area will be 16 times the old area.",
"The new area will be\n1\n4\nof the old area."
] | null | 0 |
engineer | grade-5 | identify-laboratory-tools | true | false | Select the funnel. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AAA5wklEQVR4nO2deZwU1bn3n+ecU1W9zQrMAiibioogQaPeqNF4ffMaIxo3jFn0amIQ0agR4+7Vm08kUV8XEhdQL+437iQxMagxAioqYkQvLiDLAMIwMNMz09NLVZ1znveP6oaR4DIsVY19vp9Pf6Z7pqfqdM/8+jnPc576HQCDwWAwGAwGg8GwC4BRD8CwY5k2bZojhEh80fMsy0r6vp8tPXYcR/7kJz/J7NzRGaLCCL1MICKcMWNGEyIO1loPJGJ1iFAD0PtG1QD... | 1 |
science | grade-5 | identify-mammals-birds-fish-reptiles-and-amphibians | true | false | Select the amphibian. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAEAAElEQVR4nOy9d7RsR3Xu+6u0QnfvdKJyQiCiAJFB5IwJIphkENEmY8LF9sUEg8GJYIIBY2OCCAKRcxJJRBEECkigHI9ODrvDWqvi+6NW73MO1vXFaIw33hvD/Y+Oenf3Wqtq1qw5v/nNr8TP9qV0whAWFP/z+p/X/ydf4wC/ncL1FlY0nLyc35f/Y7j/8/r/+mtBwQnD/O9J2P++/B/D/Z/X/x9eczt1af97+g/7qQjIG31D/2+8UkoIIf6LT8T+c/kzQojf+zu... | 1 |
math | grade-4 | decompose-fractions-into-unit-fractions-using-models | false | true | How do you write 8/9 as a sum of unit fractions? Use the fraction strips to help. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABsCAYAAABQF8VPAAAIfklEQVR4nO3dXWzddR3H8c9Zy0rZOlc34kIdWSNxIxnRZSOCiqFqTFCHDxci0Wl8umIYvQESLzDKzYwhakz0YksMUYNemC1AsggCggwdD44wlfjEJNuUx62UtevacrxYmDg1mTvfs/9he71udk7T/Pq+Ov3kv/85bbVnnmtn33eTF3+TzB4IAK8B/cPJorclIxuT/iVN1wDwKq32X7/SzsFfNN0BwMlY/J5k9KamKwB4lf5MPHT00Rs/nwyONlsDwImZejLZuzmZeLj... | [
"1/9+1/9+1/9+1/9+1/9+1/9+1/9+1/9",
"1/9+1/9+1/9+1/9+1/9+1/9+1/9",
"1/8+1/8+1/8+1/8+1/8+1/8+1/8+1/8",
"1/9+1/9+1/9+1/9+1/9+1/9+1/9+1/9+1/9"
] | null | 0 |
math | grade-3 | identify-unit-fractions-on-number-lines | false | true | What fraction does the number line show?
0
1 | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAAoCAYAAADE3o01AAADQElEQVR4nO3dMUtcWRgG4G90LERQjEsQcUAUbIIEljTmD9grBATrgKUWio1oYWGjhSD+AW0iluIviFuoi4WlEZnIIMQoM1VUmC0WBoRkR3aHnDub52nvLd7mg5dzzz0nt729Xc3lcjE5ORlAduzs7ITZhOwxm0A9+WKxmDoD8B1mE7LJbAL1tKQOAAAA/yf51AGAp24Py3G+XozXJ28jIuLo+CyGZgrRPdqZOBkA8BxWsCFDzteKcfTuLG4Py9H6LR+t3/Jxe1iOo3d... | [
"1/3",
"1/2",
"1/5",
"1/4"
] | null | 1 |
math | grade-8 | perimeter-and-area-changes-in-scale | false | true | Look at this circle: If the radius is doubled, then which of the following statements about its circumference will be true? | "iVBORw0KGgoAAAANSUhEUgAAACUAAAAUCAYAAAAKuPQLAAAB0klEQVR4nO2VT0iTcRjHP6/bLmlo73zXUk8iBEkWoQ48DN+ceGipZGiHRdnqkmAkBC5E6GT/oCWKeHAXtyDBS7M8FGzYH4lBmUPBkSFZ4IS3U756eWcHMXjTw9sQ9PB+jj++z5fP77k8wuxmcpMDRs5+C+yGKWUUU8ooeyaVyWQIdj9BdtZSfaiKyzU+5j/N76/U1MspQg9CXL3TTjQVZWlhiafdway6rABtZ1pRVn9RXnkCJa0Qno78DcjOWpS0ohtyn3MzMDGoexO... | [
"The new circumference will be 3 times the old circumference.",
"The new circumference will be 2 times the old circumference.",
"The new circumference will be\n1\n2\nof the old circumference.",
"The new circumference will be 4 times the old circumference."
] | null | 1 |
math | grade-7 | nets-of-three-dimensional-figures | true | true | Which net will make this figure? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAAQN0lEQVR4nO2de1yU1brHvzMw3ON+EYJQVEQpqUzRYKOJ9/JCH9HdTTE8mnr2cUgLMo8NG8vbFrHOx1QkCW2rmTusTtdtYopopiERcUmFzR0FhjsIzHv+mOMkboWZYYAB5/v58AfOu9Z65Dfredeznme9r0gQBAEDeoO4rw0w0BGDIHqGQRA9wyCInmEQRM8wCKJnGATRMwyC6ICPPvqIKVOm8PXXX3e/M8GA1mRmZgqBgYECIACCu7t7t/s0CKIFVVVVwsqVK1VCWFo... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUkAAADlCAYAAADeIwWJAAAq4ElEQVR4nO3de1jUddrH8fcMoBwEBJWTuoIguKmLbpq6Wmmez1Kr1m6bbmYHa1c84wnxEJitimtZppZr7or2bIHlpqVP2AqdrAcLWwEP0yoqIIKggBxmnj9GJlREBmbmN4f7dV1dXiEMt8B8+M3v+73vrwrQIayGTqfjUiWcKoPSGqiW744QFuWsAk8n6OIO/i1AhYSkVbl0Q8fXJUpXIYQA6OsFzkoXIW6VU6b/M7AFRHjof6MJISyntAayrsPFSsguA7XSBYl... | 1 |
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