subject stringclasses 4
values | grade stringclasses 15
values | skill stringclasses 445
values | pic_choice bool 2
classes | pic_prob bool 2
classes | problem stringlengths 0 1.12k | problem_pic unknown | choices listlengths 2 4 ⌀ | choices_pic listlengths 2 4 ⌀ | answer_idx int64 0 3 |
|---|---|---|---|---|---|---|---|---|---|
math | grade-7 | classify-quadrilaterals | false | true | What name best describes this shape? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADpCAYAAAAeakAkAAAls0lEQVR4nO3df3TU9Z3v8dd3fmQmM4kJVMoP3SW1LUHuORBob6ELVdh6wyJyBFdkddUQtCLiD2ht6XIlVHDZ0rUrWl3AKgS0tRQqsIisdL1EC0ft7ZKBcw8SbLvDVoQohsTMTCaZH9/7x9eQQAXyY5KZ+c7zcU5Pkmbmy0c9nPP6vr/veb8N0zRNAQAAAEgJR7oPAAAAANgJARsAAABIIQI2AAAAkEIEbAAAACCFCNgAAABAChGwAQAAgBQiYAMAAAApRMAGAAAAUsi... | [
"trapezoid",
"square",
"rectangle",
"kite"
] | null | 2 |
math | algebra-1 | identify-linear-and-exponential-functions-from-graphs | false | true | What type of function does this graph show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAETCAYAAAAMFHHvAAAbRUlEQVR4nO3dX2xU95k38GdIwMZOg5W8Bpo/a7xLizfQN0ZOCHQJClysSsq0SqU2VaO82mTFRaXdq12p0l6k2bapEqkXkUpatRdt+ueiXTVVJJASbaUlipAMqKM4W8OaqvvaaaoGzCa1k9fGYOC8F+6Mx+CAB8/MmTnz+dxwZvyM/YyNOF8ffuf35JIkSQIAAKiKFWk3AAAAWSJgAwBAFQnYAABQRQI2AABUkYDNomZmZmJmZibtNgAAmo6AzaKGhoZiaGgo7TYAAJq... | [
"linear",
"exponential"
] | null | 1 |
math | grade-2 | am-or-pm | false | true | Molly is cleaning up after breakfast. The clock in the kitchen shows: What time is it? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABZh0lEQVR4nO3deViUVfsH8C8u7KCUG4KymClY7gJaYqXoqyAWaIqaueRWKZhbvam9bpVLKWq5oOKWS4opiiaombmAmLnkoJYsMob+UMFhm8GF3x/EyMgsz2zMAN/PdXXFzJznPHcEF/ecuc99LEpKSkpAREREREQGUcvUARARERERVSdMsImIiIiIDIgJNhERERGRATHBJiIiIiIyICbYREREREQGVMfUAZDpSaVSFBUVoaiwEEVFUhQVFaKoqAi169SBrY0NbGxsYGN... | [
"9:55 P.M.",
"9:55 A.M."
] | null | 1 |
math | grade-1 | addition-sentences-using-number-lines-sums-up-to-20 | false | true | Which addition sentence does this model show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABhCAYAAADsidaRAAAVCUlEQVR4nO3de3BM998H8PfmZhu5IhFpSSQdCZq6pSJoSfwo1RYtSqdT2qpWL6Z0jOsMKi29UB46huo8HiXGrUn0kodnkI1p5CqhmGhJE2KzKiKRzX1lnz9Od1kbSTaOPefsvl8zJrvnnNl8vnaT8873fL/fozIajUYQEREREZEoXKQugIiIiIjIkTBgE5FovjsPqHcAL/6v1JUQERFJx03qAohIGXS1QFc14N7Cn+WVjcA7acD/XQM8XO1dGRERkbywB5uI2mRoBnr... | [
"5+5=10",
"5+1=6",
"8+3=11",
"8+1=9"
] | null | 3 |
math | grade-1 | equal-sides | true | false | Which shape has 3 equal sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGoklEQVR4nO2dS0+bRxSGjw1kkZB21yo/oO26K35X/0rTKCzCiqyQkg1sYRkpKGukNF2QVfkQN9lgZOz5posP0nAxvs2cOZf3kSLFMcYT9MSx53vPvK0YYzy4IvqnR9QNRMNIAMzNYovo+QLRL0+Jfn5C1Drox7jbKb0sYJmVH4gWv/SaGy+eEP32rLEQgHnpBqLPF0T/XhH93SNqd4bNHZAMpOT5QuMUEdF5IGqH7+4AICU3Tg0iUbvsUoAXIBpgAaIBFiAaYAG... | 0 |
math | pre-k | fewer-and-more-compare-in-a-mixed-group | false | true | Are there more squares or triangles? | "iVBORw0KGgoAAAANSUhEUgAAAQ4AAAA2CAYAAAA273fRAAAEaklEQVR4nO3dS08TYRQG4NML5VIoFWiAGlBZEFfGH+NK/wa/wISdMcG9Lk3ERFfoDhOMlxU1biBqAhENJHipMpIJaVoXtU1DYphhzjfn65v3WZP0vLzNSekM82VarVZLiIhiyFoPQET9h4uDiGLj4jCwsXUsG1vH1mOoQ82FKklfGX7Hka79ekNu3P0qIiKvbl8ynkYPai5USfviJ46ULT/5bj2CE6i5UCXti4sjRZs7odR2Q+sx1KHmQqXRFxdHiu49/2k9ghOouVB... | [
" triangles",
" squares"
] | null | 0 |
math | pre-k | represent-numbers-with-shapes-up-to-3 | true | false | Which group has 1 rectangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAC2klEQVR4nO3cv4odZRzH4d85+yewJtpFLFJq8Apyc5beijeTG5CYdBZuLHeTA7vuYSyGwIIQo82cDzxPNS/TfIsPw1vNblmW5fp+5t1h5vY487AMnJzz3cyzs5nvr2a+vZzZXd8ty+ubrWfBl3v19cz528N6+O5y5uVXa9Vwam6PM28+zvxxP/PbYWZ/87C+EC2n7NnZ2ujMzIfjzP746AWcsk+N/rXM7LedAv+PcEkSLknCJUm4JAmXJOGSJFyShEuScEkSLkn... | 0 |
math | pre-k | count-pennies | false | true | How much money is there? | "iVBORw0KGgoAAAANSUhEUgAAAL0AAAB+CAYAAABxqxAqAABtC0lEQVR4nOy9d5Sl11nm+9tfPjlUzrmqq3MOanVLsmRZlmXL2AYHPJhLuAaGywB3mADcCTCXNWvuzFyYYWYAYzAm2GOMZJBl2ZJaqVuhu9U5p6qu1JXPqZO/vO8fpyQYrmy3ZEnIVj9r9erq02vV+Z5vv3vvN79CSim5hVt4F0H5h36AW7iFtxu3hP4W3nW4JfS38K7DLaG/hXcdtLfjSzy7RqVSwXFsapUKvutQzc3jBhJN0zCTGaLRGPFEEsOKEEvEEUJBCPF2PN5... | [
"5¢",
"6¢",
"4¢"
] | null | 1 |
math | kindergarten | tall-and-short | true | false |
Which basketball hoop is taller? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAGgAAAFtCAYAAADrpi+mAAAPtklEQVR4nO3ca3Bc5XnA8f85u3v2ol3dr5Ysy9hCluV74pg7BQPlEgpu0+KCjVu3wEDSZjIQGgofmoZMZ9JhmhlomIbJpBhnpqGhTCDEXFMwsTFy8LVgy7J8kS1LtmTddrWrvZ5+WEu2QDaSvdI+sp/fF2tXu+d95b/Pu0dnj9ewbdvuiMH+MASTkLBRWeQ0IOCAWh+UWWB0RG27sT/b01KjWZYLzuZw+kaFBXU56Xoqe4JJaBqA9hjsC4PZn0h/Q+PIEHCkWwC... | 0 |
math | calculus | determine-continuity-using-graphs | false | true | Is f(x) continuous at x= – 4? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAACIr0lEQVR4nOzdeXxV9Z0//te5+5bkZiMJwQQQRUFAUUQQFItV61ZBLbbTxbbTGTvdZ/nO/Dqd/qb9Ok6/M11+dWyn05l+q+0sHZ26VDBQFAQEZYkQICBChJAQstzk7svZf39cEolsWc4nJzd5PR8PHpqbe973nXPu+dz3+dzP+Xwk0zRNEBERERGRJRx2J0BERERENJGwwCYiIiIishALbCIiIiIiC7HAJqJBNm3ahOnTp+Oee+4BANx333144YUXzvtcVVVx00034a2... | [
"yes",
"no"
] | null | 1 |
math | grade-4 | identify-faces-of-three-dimensional-figures | true | false | Which shape has a triangle as a face? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAe9UlEQVR4nO2d2Xsb152mv1qxECS474tIUSIpUaIky49sj+IlttvObneW+7ma/6Uv53Yu56qnk3bixJ1JHLdju20ntiNaFEVJFMUVJAHuAAgUaj19UQQJkKIkkyhUFfB7n8ePLUqySmB9dU599dY5HGOMxTVgJgukTcBgIAjCIUQOqBWAc2GgTQa4uMrYVym3D4sgqo8bdYD4MGv/oEMGhmrsdBIE4QxpE3iQAVY1YDoL8CnD/gkKH0E4T61gZw0Adk2ANwt+giA... | 1 |
math | grade-3 | read-a-thermometer | false | true | What is the temperature? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAYQElEQVR4nO3dT2yc+X3f8Q8lau0oG2scKGkWaLSz3otcONCjTREH6BocooB9SauZAjkFqcgCLlAULUnklEPAmQSoD0VBqkUvXSAcFfClF1L9c4iBgsN6c0iKaMeIAysFHI+YtgJStX1kb5m1/rEHRbQoatei+BNnuXy9TuJvyOf56vbGD7/nmYnt7e3tAAAARZwY9wAAAPBJMjmOm45Go4xGowwGg13rzWYzzWYzrVZrHGMBAMCBTRzWEZHhcJirV69mbW0tN//HX+T... | [
"20°C",
"5°C",
"15°C",
"10°C"
] | null | 0 |
math | grade-6 | changes-in-mean-median-mode-and-range | false | true | Look at this set of 8 numbers: How would the range change if the number 1 replaced the number 6 in the set? | "iVBORw0KGgoAAAANSUhEUgAAAPUAAAAkCAYAAABR03zvAAAHB0lEQVR4nO3da1CU1x3H8e9eYJfLgtyWi8hFLiIZRdEQjanJYIRIMJo0k8lMk7aZpk07aSeZdNJJZzqZvmlfttM2k6ZOqk2bVJK2mYyOaFKtVBuRmwiIsKhAZReoLHdw2WV3n75YZNyllxc859m4cz7vOMvs75lz9v/wPOech9UpiqIAeL2wsAB+H5Ik3SN0OtDpwWwGo3GpTVEUxb0Abnd4D06SpNUxmcBkBqPPKwtakiKB2w0GI+hlQUtS5PC4Qe+T99CSFDF8PtA... | [
"decrease",
"increase",
"no change"
] | null | 2 |
math | grade-5 | understanding-probability | false | true | If you select a marble without looking, which color are you more likely to pick? | "iVBORw0KGgoAAAANSUhEUgAAARgAAAC7CAYAAAC+cYF4AABN60lEQVR4nO29eZhU5b3v+1mrqrp6nuiSpgtsbBoFgiN4xGCaLdkKTleB/YCakGhOdlBunpMTSR5xujl/MMjOjbpv8hiSfROPmkTd6kbc7isk0RjZbGVoh4RAq6BC05M9TzWv971/vGutqupuoIeqrm5Y3zxx1Vq1aq23mqpv/cbvT5NSShw4cOAgDXBnegHjid///ve89dZbnDhxgpMnT9LQ0EBDQwNerxe/34/f72f69OlUVVVx0003cdlll2V6yQ4cTGpoZ7MFYxg... | [
"black",
"purple"
] | null | 0 |
math | grade-8 | identify-functions-graphs | false | true | Look at this graph: Is this relation a function? | "iVBORw0KGgoAAAANSUhEUgAAAQ4AAAETCAYAAADH+ejgAAAamElEQVR4nO3da0xb990H8K/NxcYOl5DasCdNwV36hAZ3ECXcNi2KM3UqjbMqlQZ7061Bi5RK5MVUreubZWuzVE21bpNGFiZtRWu1aUZRlSquUqlbXU2bAKcobmo60rXBSfWsxLThVt8w2M8L5xz7YEN8jPH1+3kDHB8O/3D55n8756cIh8NhEBHJoMx2A4go/zA4iEg2BgcRycbgICLZGByUkN/vh9/vz3YzKEcxOCghh8MBh8OR7WZQjmJwUEIjIyMYHR1d8/WBgQF... | [
"no",
"yes"
] | null | 0 |
math | grade-4 | identify-parallelograms | false | true | Is this quadrilateral a parallelogram? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAe20lEQVR4nO3da5RddZnn8Wf/96mTqlRSlUrqmqpKbBntMA7TjhJXq+iS5QUGARfIYMNSCXgZaG7C0n4/b2at6Xa4KUKLBpxmtSI0tEinaWlbRlpsDWhLO220h26Sul+SSlVSqcqps/97XlTmv3dhcnKq6pzz7Mv388bnyTo5+ycma/1MDufxwjAMBQAAAEBNGO0AAAAAQJZQsAEAAIAaomADAAAANUTBBgAAAGqIgg0AAADUEAUbAAAAqCEKNgAAAFBDBe0AaRYc+K9... | [
"yes",
"no"
] | null | 1 |
math | grade-7 | parts-of-a-circle | false | true | What is \line{SU}? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADJCAYAAABWm0bCAAAtiklEQVR4nO3deUBVdeL+8fe9siOyiiiIuCu4lLngQm5paWk2ZpZmlm3fpkwrzalpn/ZJ26dpLLc0s82yMsufIi6RaamImGtIgIDIIgKyXX5/kFcINZXlHK7P65/Ods95bp0/Hk6f87mW8vLyckRERERExCE4GR2gPlgsljo7t/4+EhEREREzuSgKvkq4iIiIiFwsrEYHEBERERGR2mO1WCysW7eu2o5+/frRvHnzatsTExOxWCz897//5b333sNisVBaWlrnQa+//nq... | [
"chord",
"center",
"radius"
] | null | 0 |
math | grade-1 | match-analog-and-digital-clocks | true | true | Look at the analog clock: Which digital clock shows the same time? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABVlUlEQVR4nO3deViUVfsH8C8u7IxSLiEIiLnMaO4C2htWhr4JaokbauaSW2Xo61a/1FJsUfRV1F63FLfUUiwXLKHFMBXQzCWH3ICRQTI0YBCYwe33hzGCDDPPzDzDDPD9XFdXDHOe89wRc3HPmfvcx+7BgwcPQEREREREoqhj7QCIiIiIiGoSJthERERERCJigk1EREREJCIm2EREREREImKCTUREREQkonrWDoCsT61Wo7i4GMVFRSguVqO4uAjFxcWoW68enJ2c4OT... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA5AAAAEJCAYAAADiusiGAABgNklEQVR4nO3deViU5foH8C8u7AxQLiEIiLkwFrgC2gkrQ0+CWuK+lQtkpaHHpfqVlkuL21HUjgrumlqKpagFtBilgpoJ5pCpwMgoGZowCMzgwu8PYgRZ5p194fu5ri6Zee/neW+nmZqbZ7OpqKioABERERER6YWNjY2pUyAymCamToCIiIiIiIgsAwtIIiIiIiIiEoQFJBEREREREQnCApKIiIiIiIgEYQFJREREREREgjQzdQJkegqFAmVlZSgrLUVZmQJlZaU... | 0 |
math | kindergarten | hexagons | true | false | Which shape is a hexagon? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGjklEQVR4nO2dS08bVxiGP3NbpCTdtYrUbS+brvNn+vtKUJDYmA1SNt7BLkpZpKlYFdtADMhOLMf1zOliSEvA2B77nO98l/eRsojMZYQejcfj9/XbCCGE7pjoryHRoCCaBAJgZTYaRE/XiX58QvT9FlGj+zmE437uwwKWefGMaOP9sPrP8y2in7+pLARgVQYF0btPRJ0x0Z9DorX+pHoAkoGYPF2vnCIi+lgQrRV3HgAgJl+c+icQreU9FOAFiAZYgGiABYgGWIB... | 1 |
math | pre-k | circles | true | false | Which shape is a circle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACbCAYAAACao4KyAAAD6klEQVR4nO3azW4URxRA4TPjnwWGRGyC8gBJHgGJ9xeReAMg+5gVyMYj4XjUWTRWHOOxx+7uW1W3zll1qaSru/hUq14NwzCcXsJfGzjfwtWA2eQOV/DiAH57Bq+OYXX6bRjenZVeyzL3+ic4/LgZD78ewx8no0KzqZ1v4f0F/H0JHzawPrsaL0Rmc/biYDQF8HUL6+2NC7M5uzb1zwDrsqtYLwnNQhKahSQ0C0loFpLQLCShWUhCs5CEZiEJzUISmoUkNHuwz28... | 2 |
math | algebra-2 | domain-and-range-of-absolute-value-functions-graphs | false | true | What is the range of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABjlElEQVR4nO39fXhU933n/7/mTvcCCQkkLJAwxmALI2xs7IAhtoNjO3biBNIsbn5N4qy7rbtJk02vq/vL1avNtr18eXNtm/RqNslms5uN7f32+8vWa+zW2ILggA0RsbFlECDbGMsgEKCbkUbS3J+ZOef3B5EimbsZOB9GIz0f/9ga5rz01vnMnHnPW0dnPI7jOAIAAADgCm++CwAAAACmExpsAAAAwEU02AAAAICLaLABTNLQ0KC9e/eOf33s2DHNnTtX3d3deawKAID... | [
"$\\{y \\mid y \\geq 2\\}$",
"$\\{y \\mid y \\leq 0\\}$",
"$\\{y \\mid y \\geq 0\\}$",
"$\\{y \\mid y<0\\}$"
] | null | 2 |
math | grade-4 | compare-fractions-with-like-numerators-or-denominators-using-models | false | true | Which fraction is greater? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAC5CAYAAAAS5EjTAAAf/0lEQVR4nO3df4xcdb3/8de2y/1Kis40gUD/miltgjcXOlNj/ApSZipB/hF3VyOWCN+ZYkHEfOmsUhLqN3Y2eIMEmp2CXui9SmcB0fWbdKeKem1pd7asi9E/OtPe+EXDuDPlxrYi6VmztEaK+/1jemZnd0vZH2fO55w5z0dCqLvbzns779oX7/M579MxNTU1JQAAAACOWGa6AAAAAKCdELABAAAABxGwAQAAAAcRsAEAAAAHEbCbHDp0SA888IBWrFihK664wnQ58Dn... | [
"1/3",
"1/4"
] | null | 0 |
science | grade-6 | compare-concentrations-of-solutions | false | true | The diagram below is a model of two solutions. Each yellow ball represents one particle of solute. Which solution has a higher concentration of yellow particles? | "iVBORw0KGgoAAAANSUhEUgAAAbAAAAEVCAYAAACBn7B3AABzLUlEQVR4nO29eZwdVZk+/pyqu/aepLPTSZqQfWEzhLCo4EAQArINCIoCA/jl5wwiMqjDqICDG7IMLoyIiozgQkQYBUMIICCbYTNAggQSsu/pvftuVef3R521bnWnk3R3uu99n88nqa66datO1T1Pve/7vO85xTjnHAQCgUAgDDE4B7oBBAKBQCDsC8iAEQgEAmFIggwYgUAgEIYkyIARCAQCYUiCDBiBQCAQhiTIgBEIBAJhSIIMGIFAIBCGJMiAEQgEAmFIggwYgUA... | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | null | 2 |
math | kindergarten | subtraction-sentences-up-to-10-which-model-matches | true | false |
Which picture shows 4 − 3 = 1? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAABKCAYAAAAi2W96AAAQBElEQVR4nO2deZAc1X3HP33MsbMze69Wx+q+1wYkKF2JQwyxHGNMggGrKAhhccX5gzKuOPBXUkU5VSn/hauIndhVSSyL2CQ2BnwWl6CAwpaEBKsLVkgrrYRWe4y0x9w93dPdL3+M9prt3ZnR9kraUX+qtna6+83r329+3+n33q9fv5GEEGLAgNMZSFpgCjw8rjtUCSIKrA1Bix+kAV2Ig4lrbZaHR+lsqwG1K5PfWOSH9dV5VXt4XG8kLTiZhn4DTmVATpj5A55... | 1 |
math | grade-1 | equal-sides | true | false | Which shape has 4 equal sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAADaklEQVR4nO3dvW4UZxiG4Xd2bRcEkiJSoki0hJaOjiOhypGk5SQijoWSKi1gKoo4BQU2toS9y6QYoQSBie3dfebvuqodjVb7FfeOnm6atm3bo/Oqw7Oqk3XVqi3Y2F5TdWdZde9W1c8HVc3Rh7Z9ftz3sZiyh99X7b066y5+Oai6/11XIWzqZF314rTqr/Oql2dVi+NVd0NkbNOdZddUVdX7ddVi/Z8bsE2fmrpoqxb9HoW5EBoRQiNCaEQIjQihESE0IoRGhNC... | 2 |
math | algebra-1 | domain-and-range-of-exponential-functions-graphs | false | true | What is the domain of this exponential function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABjoElEQVR4nO39e3hU933vfX/mpPMRJCQsWwKMTSKMsLGxAwYbF8d24lMgSZ32aRK37k6TnUPb69npnd023W1ub+9cu01y13XS1K0b2316X2m8i50YWyY4YCAiASODQPIJyyAkQIeBmdGM5rBmZq3nDywFmZNk1o/RSO/XdSV4Rmt99NX6zfzmO2vWrOVxHMcRAAAAAFd4c10AAAAAMJ3QYAMAAAAuosEGAAAAXESDDWCchoYG7dy5c+z2oUOHVFtbq56enhxWBQBA/qD... | [
"$\\{x \\mid x>0\\}$",
"$\\{x \\mid x \\geq 0\\}$",
"all real numbers",
"$\\{x \\mid x \\leq 0\\}$"
] | null | 2 |
math | pre-k | addition-sentences-up-to-10-which-model-matches | true | false | Which shows 2+7=9? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAdoAAABKCAYAAAAc9ZVYAAANlklEQVR4nO3dTYwb533H8d/zzBtfdymtLOvFcATbkuI6cmzLrd+SQy5KUNQnwz0EhU9B00OSQkWTU07JoUgTOBcjMHprD3072oYL9GTkBTHcKkEstY5eYChOtNJKWmm5fJ3hzPPkMEtpuaLIGZIPOTv+fYCFJZGc4VcY+c/hDDlCa62vBcClNtCIgFCDiIiIJmQLoGoBR0vAgy4grvlaf7C56KdFRESUP88tAfbFdvybgy5wvBxPYSIiIppMIwLOt4CrAXChDcj... | 0 |
math | grade-2 | names-and-values-of-all-coins | false | true | Which coin is this? | "iVBORw0KGgoAAAANSUhEUgAAAMMAAADDCAYAAAA/f6WqAACnmklEQVR4nO29f3CTZbo3/tkXSSZDQkliSqINwZbG5qW2gzR9x2JDlxV2V3vKALsjVOSsh8qI7AyWYZad161/2PUd6zCtzKw/RvGwB6HirMDQU91d8HBKqjjfpui0wklNaTWkkkBNQs3DdBJg/P5x57pyP09TxB+76+56zTClafLk+XFf9/Xrc32uH3zxxRf4Xr6X7wX4X3/rE/hevpfvinyvDN/L95KV75Xhe/lesnLT3/oE/tHl6tWrU4KyZDIBs9mS92c+MZstAIC... | [
"nickel",
"dime",
"quarter",
"dollar coin"
] | null | 2 |
math | grade-3 | parallel-perpendicular-and-intersecting-lines | false | true | Are these lines parallel? | "iVBORw0KGgoAAAANSUhEUgAAAGYAAABTCAYAAABtaHJ8AAAI5UlEQVR4nO2deVAUZxqHn+EQEAgq61FRQTFlCKgEzRoFygMFjRqkdL0QFwQCRpTdrMdmU6msupYHmlDiCQHUEnUNmiKsGgULEwVlrShRMkpZgQioi7Iql4jgTO8fJiwDwyH0zPRAP/8xXdPzVj31dTO/93t7FIIgCMhIDhNDFyCjHVmMRJHF6IBiZR5ZKUc7dQ4zkWrp1tRUVpCb/i25GWfIz8mmpqKckG2xnTqnLKaDFCvzyM04w7X005Tc/EnjWN/BDnjNW9Sp88t... | [
"yes",
"no"
] | null | 1 |
math | calculus | identify-functions | false | true | Look at this graph: Is this relation a function? | "iVBORw0KGgoAAAANSUhEUgAAAQ4AAAETCAYAAADH+ejgAAAUpUlEQVR4nO3dbWxT593H8Z/zQMxDE4+MJSuFjd1t4o60DgOmRJOqrkyDtE0rtm6dKiUS64NWJF4Vib3phESpilRedWVaq01aomkPqiokmGCqaFFfLOFWGTaklUFFC6RdA23BgYQ4JY7vF7ntxInzcNnHPuf4fD9vICcnxxc2/uX6/885vnzJZDIpADBQZvcAALgPwQHAGMEBwBjBAcAYwYGs4vG44vG43cOAQxEcyCocDiscDts9DDgUwYGsenp61NvbO+f3f/vb36q... | [
"yes",
"no"
] | null | 1 |
math | grade-2 | read-a-calendar-ii | false | true | What date is 2 days after December 15? | "iVBORw0KGgoAAAANSUhEUgAAAssAAAF2CAYAAACYtNXtAABcVklEQVR4nO3de1yUdd7/8dcMJxEFBATPiqLiAVHJTJHYzFJTO5jrrm57d69Z2/He1n6WN22H3TLvstqydrPdDmZWmlmKmuGhBcVTHvF8REMEPCHI+TTz+wMZJbh0UGAYfD8fDx/qXNcMn/lwzTXv+c73ui6T1Wq1xqaX8MOpEk4UWBARERGR69fe08yIIDfubu3m6FLkOpiWpBVbj+ZbmdDWFTezCaujKxIRERFxciagxGLlq5PFdG5q5p7W7o4uSa6R+YdTJUxo54q... | [
"December 17",
"December 16"
] | null | 0 |
science | grade-5 | identify-mammals-birds-fish-reptiles-and-amphibians | true | false | Select the bird. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAACrb0lEQVR4nOz9d7htx13fj79mZpVdT2+3V+mqy5Ys2Zbl3ikGTDfNoduEGgIJIYnpxphACJCQUAMxNmDcsHHDBXer2ZIlS7rSlW4vp59dV5mZ3x+z1tpr77PP1XWcP76/52HOs5+zyyqzZt7zmU//iLs2rT1Wh6biX9q/tP9PtpaGRzpwPoZpD+6cct/LfwHuv7T/r7emgmN1976tB9/LfwHuv7T/f2g5ThM7+M4bd+CjjzxRvBdCFP+tyL6z484aNMPggPKx+TV... | 0 |
math | pre-k | tall-and-short | true | false |
Which clock tower is taller? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAG0AAADUCAYAAACWPa3rAAAWGUlEQVR4nO2dfXRU5Z3Hv/c1zGQyZCCBkBCkmKhRliJFIpqWVj0r6rrLItJ6tktFW5eztUdI3XZrd7GifTuVIhZPW/ectcc9aw9oY1a7FlrsWVoMQqmWmhQlCaUEYlKTTDIk83Lvc+/dP+7LzGTuvCTckHnS53MORzNzc+fe+eS5z+/5/X53hjMMw+hTgK4ocEEDiAFGkSFyQJkA1PuB+TLA9SUM41hkug+LUSiNQUDsjJo/LJCBK0tNo4zi4oIGvDcGvK8Ap6I... | 1 |
math | grade-5 | range-find-the-missing-number | false | true | Martina has the following data: If the range is 15, which number could t be? | "iVBORw0KGgoAAAANSUhEUgAAATAAAAAkCAYAAAAOy2bKAAAHWElEQVR4nO3ca2xbZxnA8b8dJ46d1Lnf6+Zel7RN1dJuWTPWMqYNITam0iFgYhKa9gGYhMY3NCGkCSQmIaaBEAMJJkBCmujExjoNsQvdqo02XdI0aZvQuEnwkuXi3JxL7ePYPnzIZfOStHZ2zmsbPT/JH/Ke4/M+SZ738TnveY8tuq7rAERADwExYKVFCCHShwWwgiUXsK026bqu6yFAS2FgQgiRDPtKIbMSQYqXECKzaEAErLoULyFEBtI1sBJNdRhCCLENUbDKhL0... | [
"15",
"9"
] | null | 0 |
math | grade-1 | two-dimensional-and-three-dimensional-shapes | true | false | Which shape is three-dimensional? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMwAAADMCAYAAAA/IkzyAAAifUlEQVR4nO3deWCU5bn38W+2yWTfV7LvIWQhC0lIICCCu3KK1ipq6aLYajesWtva5T1urZVzWrVq7XuOa9FWbFUURagEEkIgISQQspM9k5Xsk0kmIeePSUYIoBnJzPPM5P78RwiZiyS/ebbrvm6r6enp6c4JqFfD8BRMTiMIwgxbK3CxgWhH8FOAVef49PSRIanLEgT5y3QF2zq17g8BCoh10qVJEASd4SmoGQXVBNSqwXpoUvcXIiyCcCEXG102AEamwHrqnL8... | 0 |
math | grade-6 | mean-median-mode-and-range-find-the-missing-number | false | true | Roy has the following data: If the median is 3, which number could q be? | "iVBORw0KGgoAAAANSUhEUgAAASQAAAAkCAYAAAAgjkdYAAAIbElEQVR4nO3ceVAUZxrH8e8MAwOEAMopIgHBA48QideKgHiH0rjGezV4xewSNdHEI4m1UWMSc3hEN2o0mjVR4y3xPlYUvFBjUIMKiO5IJMohAgIDzEHvHyZTxepWYe309Kjv5z+emZrf8/YfD91v94xKkiQJwFBrQm+sxizVIiEIgiAvFeCgUuPq6IyTWnO/JkmSVGmqocpUo2x3giA8tVw1Wlw1WjTGWrMYRoIgKEpvqsFR7YBaL4aRIAh2QG8yoDbVmpXuQxAEAVO... | [
"1",
"16"
] | null | 1 |
math | grade-4 | acute-right-obtuse-and-straight-angles | false | true | Is this angle acute, right, obtuse, or straight? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAA6CAYAAACKwC6lAAAKsklEQVR4nO3de3DV5Z3H8ffJFUggIUhis6JJBEEgBcQddAYsFExZHQszpWrLKrSVbttpvYyCICBXN8wuK1Rbxx10BN2W1tIu7GIrFFboWMWVGSIJEBobQolcTg1JTA7hhOSc/SNFy2yggsnJ7f36L+f2fPPfZ555Ps8vEI1Go0iSJElqE3EdPYAkSZLUnRiwJUmSpDZkwJYkSZLa0P8L2Ot3BNlVXNsRs0iSJEldXqs72JMWlJBxzx4ee6GCilPhWM8kSZIkdVmB1m4... | [
"acute",
"right",
"straight",
"obtuse"
] | null | 3 |
math | algebra-1 | compare-linear-functions-graphs-and-equations | false | true | Function A and Function B are linear functions. Which statement is true? | "iVBORw0KGgoAAAANSUhEUgAAAjcAAAGlCAYAAAAGbtd7AABQqklEQVR4nO3de3xU9Zk/8M/MZCaZzBACgYRL7tBwkUuoQIIKFJAiXna9AcVLvfyU7q5Uocq22l1au7t2tVK19bZeW9SKRSqIVXQboKIYsl6gUUlEJoGEkAkEJsnkzH2+vz/SGRlIMpOck5yZM5/36+WLVybfec4z43e+ec45z5yjE0IIEBEREWmEXu0EiIiIiJTE4oaIiIg0hcUNERERaQqLGxpUjz/+OHQ6XY//XXnllWqnGKGwsBA6nQ5bt24d9G0vWLAg/L68+ea... | [
"The y-value of Function A when x=2 is less than the y-value of Function B when x=2.",
"The y-value of Function A when x=2 is greater than the y-value of Function B when x=2."
] | null | 0 |
science | grade-5 | animal-adaptations-skins-and-body-coverings | true | true | Leaf-mimic grasshoppers live in tropical forests around the world. This grasshopper is adapted to be camouflaged among dead leaves. Which animal is also adapted to be camouflaged among dead leaves? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOz9eZwdRb3/jz+ru8++zr5PJpkl+0pCwr6vxoiA7CqgKCCieMGg/vBeLipeQUAQEMJXBEFBFBVQVllDCCH7nsky+76dfe3u+v3RM8cEEjJqBPVzno/HeSTT3aequqq6z6ve9a53CSml1HUd0zTJkydPnjx58uTJkyfPvyeKoqBpGiKbzcq8uM+TJ0+ePHny5MmT598fRVFQ8uI+T548efLkyZMnT57/DEzTRPm4C5EnT548efLkyZMnT55DR17g58mTJ0+... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOz9d5xkVZ3/jz/PObdCV3d1zt2Tc2CGIeckCCKiYgJBV/noGj6oqx8Rw093WUyrrrrGRfwaVoysrgqKqCDKgDgwA5Nz7Jy7q7urq+rec87vj3NvdfcwMKOy4rr18lHOTIUbzj33cl7v9+v9egtrrQ2CAGMMJZRQQgkllFBCCSWUUML/TEgp8TwPIcRzfSgllPA3CVkiziWUUEIJJZRQQgkllPA/H8YYgiB4rg+jhBL+ZiFLxLmEEkoooYQSSiihhBL... | 0 |
math | pre-k | ordinal-numbers-up-to-fifth | false | true | The first picture is a dog. Which picture is fifth? first | "iVBORw0KGgoAAAANSUhEUgAAAaUAAABdCAYAAAAFZHluAAAc00lEQVR4nO2de1RTV77HvweSKIEkIgwgkoowKlJAe62oaUeZKVCd1retrbZ1OurUaeda2zp6172tSpd3rdGqU53e1k51sB370Gp1xj7BdnC6ilh1pPjAx0CxQSStqRIISBI4949ISCCPc5Jz8vx91qJLT/beZ2O/2b9zfnv/fj+GZVkWBEEQBBEERAV6AgRBEATRAxklgiAIImgQzSjdMLMY/pkBd3zRihtm8hASBEEQnvHKKB28akbJ+ZtujU3FNQsa2rtR3dKFx0+... | [
"paw",
"dog",
"house"
] | null | 2 |
math | grade-7 | identify-equivalent-linear-expressions-using-algebra-tiles | false | true | These tiles represent the expression
–
9x–2–2x+7. Which expression is equivalent to
–
9x–2–2x+7? | "iVBORw0KGgoAAAANSUhEUgAAAewAAABoCAYAAAAzfMMaAAAK7klEQVR4nO3dT2wU1wHH8d/MLF7oGtvBtcGwRjGtSLEPECJwYieoIQ05pWrrnCLIKZceiKoEpFThhFQRQkQ5lEOrSFF7I8qClJZLEiKSyEaFNhFSjJMCyVp2YFmQjCyv/+7s9GBi4QDGeN/um/F+P5IldoXe70lP9m9ndmaeEwRBIAAAEGqu7QkAAID7o7ABAIgAChsAgAigsAEAiAAKGwCACKCwAQCIAAobAIAIoLABAIiAmO0JAACiw8+mFOT6jI/rJDbIa+yquLw... | [
"–\n11x+5",
"7x+5",
"11x+5",
"–\n11x+9"
] | null | 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? | "iVBORw0KGgoAAAANSUhEUgAAAjcAAAGlCAYAAAAGbtd7AABQpUlEQVR4nO3dfXyT9bk/8E+SJk2aAC2FlofS0sKKDy0UBVpUQFAGTNnUAU43h3om7pzhlIlnczvD6Zk6HcyH+XTUzc2HqatsIG7ifitwQLF0qGBRW5Wk2FKaQmlo0zwn398fnMSGPiTtfSd3Hj7v14tXX02/+d5XwpXvfeW+7jtRCSEEiIiIiFKEWukAiIiIiOTE4oaIiIhSCosbIiIiSiksbiiuHnvsMahUqgH/XXHFFUqHGGby5MlQqVTYsmVL3Le9cOHC0PPy+uu... | [
"The y-value of Function A when x=1 is greater than the y-value of Function B when x=1.",
"The y-value of Function A when x=1 is less than the y-value of Function B when x=1."
] | null | 1 |
math | grade-6 | classify-triangles | false | true | Is this triangle scalene? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADOCAYAAAAEw3WqAAAkfklEQVR4nO3de1xUdcLH8e8gioioSZJEGBZeUiw1JQ1v4KXHJ7Zc1y1rLbtpmJqrtWlabZaZaXlBQBA185apWd4XQfCeWj7dpFqjUrLHsZqyMbGJceb5o8WHDJXLzBxm5vP+a1U659vrtX98PZ3f+ZqcTqdTAAAAAFwiwOgAAAAAgC+hYLtQVlaWTCaTBg4cqPfff9/oOAAAADCAiVdEXKdp06Y6ceLEuV/fcsstGj9+vBISEgxMBQAAAE/iCbaLrF69+nflWpKys7O... | [
"no",
"yes"
] | null | 1 |
math | grade-3 | identify-parallelograms | false | true | Is this quadrilateral a parallelogram? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADOCAYAAAAEw3WqAAAhCklEQVR4nO3deXxU9b3/8fdMJgthC9lIgBDCIqAssu+yg4DigoJ6bbWK1lbtT2x9/Ky019sq9vZ6i96qV22phdoqIGFVUBARCARIQkSChi2BBBIgCYQkhCSEzP0jcCAh4AxkcuZMXs//PpLlgzzQN9/z5ntsTqfTKQAAAAD1wm72AgAAAIAvIWADAAAA9YiADQAAANQjAjYAAABQjwjYAAAAQD0iYAMAAAD1iIANAAAA1COH2QsAMFdKXrrWHk7SkowNCvYL1OZp75q... | [
"no",
"yes"
] | null | 1 |
math | grade-1 | identify-shapes-traced-from-solids | false | true | Can you make a triangle by tracing this shape? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACyCAYAAAB4I7gQAAAbP0lEQVR4nO3dfZAc9X3n8c+vu2dmV7vSap+EnkCAeYgBgQEhy8bYHBR+CA/BD5ydlG3iMk7uyleVy9VdXeKKr+4qLvvOVYmppK6uLtiOjS82FSAmwQITB0xwOXrgwZZ5sI1QEEJopdU+aLXS7s5D9+/+mJ19mH2amZ2enul+v6qk3en+dfd3djXq7/zm9/t9jbXWCgAAAEBdOFEHAAAAAMQJCTYAAABQRyTYAAAAQB2RYAMAAAB1RIINAAAA1BEJNgAAAFBHJNgAAAB... | [
"no",
"yes"
] | null | 0 |
math | grade-3 | interpret-line-graphs | false | true | Mary, an analyst at a shipping company, reviewed historic postal rates in order to predict future rate increases. In which year did the postal rate reach 5 cents? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFtCAYAAAA9PB1eAABTSUlEQVR4nO3deXyU5b338c9sWclKAiEsYScsYd83BQUR3BARaMWKraf1+FTtY+tpa9tzal3aU23V1h4fW9eqteyigKCsBgQEAmEnErYkEBJCyDr7PH9wMiWShcBk7oF836+Xr5fcM/fcv/llCN9cue7rMvl8Ph8iIiIiIhIQZqMLEBERERG5nliNLkCCb/HixaxatYpu3brx5JNP1nosNzeX3/3udwC8+OKLtGrVqs7XOHv2LJ988gkHDx7k/PnzmEwmWrduzcCBA7n... | [
"1970",
"1967",
"1972",
"1969"
] | null | 1 |
math | grade-5 | nets-of-three-dimensional-figures | true | true | Which figure will this net make? | "iVBORw0KGgoAAAANSUhEUgAAAMoAAADNCAYAAAD5YO8QAAASmUlEQVR4nO3df1BU9d4H8Pdh2RWQDdBy1x8bIRbW3m52Mek+MuNFjZlw7rDjM4pDxJ0Y+oFODGVNUzg240Q/ZsxRmyDNwYnIwscUmknv3fzx2ENPj6aldVFJAWlV7la6/FhgZX+c5w/uQVxBDyvL9/s9fF5/Msi+l+Ht+Xz3nO85kizLMgghNxXBOgAhIohkHYCIo6mpCTt37oQkSVi2bBmSk5NZRxozEo1eRI3t27ejuLgYbrcbABAbG4vKykosW7aMcbKxQaMXuSm... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUYAAADNCAYAAADE19lfAAAk10lEQVR4nO3de1zUVf7H8ddwGQHBAW/ghQDBS2Kpee0nLVjmbroFaxddNTVvqa1G2lXdpDa7mJpaeemCd0s3E0zTKETNtvWW6IZiyi1UQlHkKswwzO8PGjLTUmTm+/3OfJ6Pxz5qd3HmPcC8Ped75nuOzmKxWBBC/C6dTqd0BGFHLkoHEEIItXFTOoDQjoyMDDZs2IBOp+Phhx8mNDRU6UhC2IROptLieixfvpwpU6ZQWloKgLe3N/Hx8Tz88MMKJ7MPmUo7F5l... | 1 |
math | pre-k | ordinal-numbers-up-to-fifth | false | true | The first picture is a turtle. Which picture is fourth? first | "iVBORw0KGgoAAAANSUhEUgAAAaUAAABdCAYAAAAFZHluAAAizUlEQVR4nO2df3RTVbr3P2lTaJP+gBaaFgpDgSAipfy4SgHh4oAouLSoCAJXnaFXxusVhJGZEUGFuWVgFAcEfWXEgjqvIOCg6KUOTFEHZKjrFUpbBMdYilBtg1JomjRA0+T94zRp0ibpSZq2SbM/a2XRnrPPPrvP0v3Ns/ezn0dhs9lsCAQCgUAQBER09gAEAoFAILAjREkgEAgEQUO7idKVehvpBwyM+qSWK/VihVAgEAgEreOXKH1QWc/qr696FZvPfrJwrs7KyZo... | [
"sub",
"fish",
"turtle"
] | null | 1 |
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 | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAVjUlEQVR4nO3da3BkZ33n8e85p7vVF7Wk1mWkkTQXDzNjMyFATKrA7GASMgScLB42WxvIXirlF6ldKrcXIUklTipVqZBUdjepkKQgVK0XFsLGQFiwnXhjsA3LbtY2MQaCAc9d0ug6al36fjuXvDhSa0Yjz/RErXNa0u/zZmqOWqcf6Tn6nef5n/P0MTzP8+brcLEMBQdsDxGRtogYkLbgRBKGY2DM1zzv6/mwmyUie92beyByoez/52AM7k75aSQi0g4FB86VYK4... | 0 |
math | grade-8 | parts-of-a-circle | false | true | What is \line{VW}? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADICAYAAACdx5VnAAAuz0lEQVR4nO3de1xUdf7H8dcwwx1ERAWviHiX1BQvKZqW9zQrL9lmZtnmbrm1265ttV12t612u/5sray1zUuWZWalFpsXNDEt0AxJhVRUFBG5yh0G5vcHMQ7eL8gZhvfz8fDhuc2ZzzDzx3u+8znfY7LZbDZERERERMQlWIwuoC6YTKY6eR59VxIRERERozWIgK/gLSIiIiINhZvRBYiIiIiISO1xM5lMbNy48YwdAwcOpEWLFmdsP3jwICaTifnz57NgwQJMJhNWq/W... | [
"center",
"diameter",
"radius"
] | null | 1 |
math | precalculus | identify-graphs-of-continuous-functions | false | true | Is the function f(x) continuous? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AAB/8ElEQVR4nO3deXhU9b0/8PesmckeshNI2JFgwr4KggUVwQ0Ul9Zaq21tq7Z2+1V7W3vbS61tta2ttdbWutTeqrgLBEQJW5AtQCBhCwGykmWSyWT2M2fO+f2BySWsE/ienEl4v56nz9NMzrzn7TBz8pkzZzGoqqqCiIiIiIiEMOpdgIiIiIioP+GATUREREQkEAdsIiIiIiKBOGATXUbWrVuHIUOGYNGiRXpXISIi6rcMPMiR6PIxf/58fPnLX8ZXvvIVvasQERH1W2a... | [
"yes",
"no"
] | null | 0 |
science | grade-5 | 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 | [
"iVBORw0KGgoAAAANSUhEUgAAANYAAAEcCAYAAAC750pIAAAf3klEQVR4nO2daXxU5d2wr8kkmewz2QkkECAEEyIEoai4IK5FAf251FZ9ntfWFV+1rizuP21darW1Kptbn6q1b2uf1qVW64Ioda2CEAISliRsCVnInkwmk3k/DGeYkIXMZM6cZf7XF8icM+fcg7m85j5zzhmLx+Px1HTD9g5odUOPB0EQAiTaAslWmJQA2bFgqXF6PF+1aD0sQTAPx6dAdEWH94ecWJic6LVOEITAaHXD9+2wvxu2dUBUS493gUglCMGTbPU6BND... | 0 |
math | kindergarten | one-more-and-one-less-with-pictures-up-to-10 | true | true | Count the triangles in this group. Which group has one less than the group you counted? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABeCAYAAAAZpWPpAAAHEklEQVR4nO3dQW5bRxYF0HJmWUVnbYmzj1Ym3R7YM29JGdtRzxglyAYitIA0QFH8GbgNy08SRVH169Wvf84CbPqhYFzwXoCvpmmaCgAAUMU32R8AAABGImADAEBFAjYAAFQkYAMAQEUCNgAAVCRgAwBARQI2AABUJGADAEBFAjYAAFS0moB9ttmVzV9+tLI1d8/h7jncHYBSVhKwz//cl39d7sqPF9ty65fhm3H3HB+up/Lvy1358eKm3Dp7M947AJ8NH7C3+6n8cHF... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6wAAAB2CAYAAADMdh6QAAALXElEQVR4nO3dzZJdVRnH4dWkyQBFy9LS8gLUS2DmyKk3IeE+iBNJlTCSG5F76AEzQhwgTYNMxJIqUmkSi/7aDg5Nkre/zjm9917vXut5Jl1O4vHPiumX/qE7pZShAAAAoxiGoXx1VMr+s1IOT0s58d02rG13p5TX75Tym9dK+dXdUnaKgxUAAEbz1XdD+fBJ7U8By/fGT0rZrf0hAACgJZ8+W3399d1Sfvej1U+LgPUcnpbyydNS/n1Uyj+flfJK7Q8EAAAteXK... | 2 |
math | grade-6 | understanding-percents-strip-models | true | false | Which model shows 20%? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUsAAABLCAYAAAD5wKUqAAACKUlEQVR4nO3XP04UcRjH4XdmFwoEbYzGA6hH4AwUXsHOyitQcgUrO4+ABXfgBoi9GK34swnI8rOYbLD8soC7yvM0O5PZX/Imm3z2na611o4uqr5Oqk6mVZetAB68cVe1Map6uVb1fLWqOzpvbf940WMBLK/Nx1Xjw8lw82K16vWjoaQAD93JtOrgrOrbRdWXSVV/fDk8EEqAaxujoYtVVafTqn76xwMArs26+KtV9YsdBeDfIJYAAbEECIglQEAsAQJiCRAQS4D... | 1 |
math | grade-2 | which-picture-shows-more-up-to-5-dollars | true | false |
Which is more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAagAAACYCAYAAACxv33ZAACFVUlEQVR4nOz9d5xdZ3Xvj793Ofv0NnOmd01X712yLNuyBdgGjI1ppoVyCV9Cwk1yExLSbsi9ubmBHz2UEAyhGLAxxlWWbRWrd81IU6TpvZ05vez2++PM2ZYoQTaWreSe9+ull2akKfvZe+1nPc961voswTRNcyILl5IQ00EzKVCgQIECBV5zZAG8EjS7oEwBYSJjmseir/dlFShQoECBAi+xwQdybzL3SYUCre6c9ypQoECBAgVea2I6dCdgPAs9SRCjWu4/Cs6... | 1 |
math | grade-2 | place-value-up-to-thousands | false | true | What is the value of the underlined digit? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAAiCAYAAABlRa5TAAAHVElEQVR4nO3dW0hUXR/H8e+YmVbmZEeNSqOUhqAsiagmUBOLpyMkFnZAo5KSQoKgi5KCpCMIBhpmRdmBCi8ksCIqDIkoM8PIshMmZFpiZjXW5LwX4qL92ul5nrF6X36fq732Xv+9/d/9GJZr2TwejwcREREREfEKn9/9B4iIiIiI/D9RwBYRERER8SIFbBERERERL1LAFhERERHxIgVsEREREREvUsAWEREREfEiBWwRERERES9SwBYRERER8SJLwD516hR//fUXw4Y... | [
"8",
"800",
"80"
] | null | 2 |
science | grade-7 | identify-how-particle-motion-affects-temperature-and-pressure | false | true | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | "iVBORw0KGgoAAAANSUhEUgAAAmwAAAGZCAYAAAA0Im0SAABv50lEQVR4nO3dfVxb9d0//lcIBBJIoYRCSaH3kNpbWtDaqhVbdXUWdfPrTVFn99vWfq2dcxd12+VWZdNNp7Jr33nTtd1D682qdm5OQe2ldmI721WDpbU3ht4XDL2jpYQmEJJ8fn+EnJICJZBAwiev58OacHLOyfsEePM+53NzVEIIgSjW0HAKhw8fQWtrC1QqVbjDIQIAxMXFIT09AyNHjgx3KCQx5j+KRMx/XYsNdwDh5PF4UF9fDyE80Gg04Q6HyE9DwylkZmYiLi4... | [
"sample A",
"neither; the samples have the same temperature",
"sample B"
] | null | 2 |
math | grade-8 | identify-linear-and-nonlinear-functions-tables | false | true | The table shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAFQAAABeCAYAAAC98DOnAAAHEElEQVR4nO2cX0iTXRzHv1k0otIoklZNXIit1NGGBjEkCkuJpAtpbIHLKAeWBV0oQn+MwkjdhbkLh7UoRBu9KkG9E19iZEZt7SbMIgmG9mcON5vmXMba9l452mv/nu33pHs5H/Bi55m/7+Gz8+xsnuPBnb97w4lAovQzCQxSmFBimFBimFBimFBimFBimFBilvBV2O/3Q6/X4/79+3C73Vi/fj2USiW0Wi2SkhbG6zg0NISioqIfXn/27BnWrl3LqSZvQquqqmCz2VB... | [
"nonlinear",
"linear"
] | null | 1 |
science | grade-3 | use-data-to-describe-world-climates | false | true | Which statement best describes the climate of Rio De Janeiro? Hint: Summers in the Southern Hemisphere occur in December, January, and February. Winters in the Southern Hemisphere occur in June, July, and August. Rio De Janeiro, Brazil, is a city in South America. It is located in the Southern Hemisphere. It has a trop... | "iVBORw0KGgoAAAANSUhEUgAAAtgAAALLCAYAAADDkfUwAAD+rUlEQVR4nOzdeViU973//+ds7DDsIAIiiiyCghuKGjVGY4q7psYmbUxy8kvS5nvSNj1dc057ek7TntMmXZK0pz3t0WyNiYmaBJckGsUdNxBRQEB2Rfad2e/fH4SJCCrGgRnT9+O6vISbe+Z+z9w3w2s+81lUiqIoCCGEEEIIIRxC7ewChBBCCCGE+DKRgH0d2dnZqFQqVCoVU6ZMcXY54h/Qpk2bUKlUpKam3vZ9BQcH26/nvn9qtZrQ0FC+8Y1vUF1dbd+3oqLCvk9... | [
"Both the temperature and the amount of precipitation are higher in summer than in winter.",
"Summers have lower temperatures than winters."
] | null | 0 |
science | grade-5 | animal-adaptations-skins-and-body-coverings | true | true | Leaf-mimic katydids are insects that live in places like tropical forests. This katydid is adapted to be camouflaged among green leaves. Which animal is also adapted to be camouflaged among green leaves? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOydd5wV1fn/3+ecmXvv9gV26aBSRREQeyOiYiVW7B1LojGJGg2axPhTE0uwRUVjjT0aFGtiBCUWMAoiYheRKm1h++0zc87vjzP3bqGtiJqvuZ/Xa2H33rlnzjxzZvd5nvN5Po8wxhjf99FaU0ABBRRQQAEFFFBAAQX834SUEsdxEJ7nmYJzX0ABBRRQQAEFFFBAAf/3IaVEFpz7AgoooIACCiiggAIK+GFAa438vidRQAEFFFBAAQUUUEABBWw5FBz8Ago... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOydebwcRbn+v1XVM3OWnOwbSQiQhIR9CSCboBEQQQTBALLIEkAF0YsKP/R6lYsooKAiCIigsouCYb0X2aKyKARCCPuasGUhZDn7LN1d9fujqnp65sxJTiCIV/v5fIacmenprq2bet73ed9XGGNMFEVorcmQIUOGDBkyZMiQIcP/TUgpCYIAIcSH3ZQMGf4lITPinCFDhgwZMmTIkCHD/31orYmi6MNuRoYM/7KQGXHOkCFDhgwZMmTIkOFfA9nePkO... | 0 |
math | kindergarten | count-to-100 | false | true | How many flowers are there? | "iVBORw0KGgoAAAANSUhEUgAAAOwAAABbCAYAAABwHGnZAAANTElEQVR4nO2db2xT5R7HP9DNuRYW9qeDOQblz4rBbYIJAZTEyExMriIv8CpeI4kGEm4iErmvDLwEfGf8l4hBXxgSNOobvWhiriPhBW4kRP5MUVEUFJnbaAfd2jLaZffFryfnnJZ17XpaON3vkyyn57Tn9Pt053ee5/k9v+f3zBgfHx9HURRXMPN2C1AUJXfUYBXFRajBKoqLUINVFBdRXIM93VPUyxcF1VwaVPOUKJ7BHjkM7+2HP38r2lc4jmouDap5yhTHYGNROPp... | [
"2",
"7",
"1"
] | null | 1 |
math | grade-4 | parallel-sides-in-quadrilaterals | false | true | How many pairs of opposite sides are parallel? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD7CAYAAABQdOO0AAAcBUlEQVR4nO3de3RV5Z3G8ScXDiEJh1wgIQE84WIEK47V6thWO9ZZVscKSUDWdGyr1TrVUTura2bZVqVaFQG1dWx1bHVs8YKOrVZBLK1atVWwiJdSdaotKOGiKAiEO4QkZ/7YJ7455xBITvbe7977fD9rsdZ+Iya/pf7x8Pie/StIJpNJAQAAAHBFoe0BAAAAgCghYAMAAAAuImADAAAALiJgAwAAAC4iYAMAAAAuImADAAAALiJgAwAAAC4iYMN7ry+Q5p0r7d1hexI... | [
"no pairs",
"2 pairs",
"1 pair"
] | null | 2 |
math | grade-4 | interpret-stem-and-leaf-plots | false | true | The architecture student counted the number of bricks in each building in his neighborhood. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD+CAYAAAAAuXIHAAAqB0lEQVR4nO3de1hU9d7+8XtgUEBRPFSiIqkQnoMUPIFnUzxkqZRl5iHNTK08bsB2Wu2fWjufSi0rU9Nqq2mmqSlgimctFVLLkkgMEfKUiqcSmN8fPsxu8pDtvVyLZ3i/rovrmv2dmbXumf3P7bfPrGVzOBwOAQAAADCEh9UBAAAAAHdCwQYAAAAMRMEGAAAADOQxc+ZM2Ww2lz9PT09Vq1ZNXbp00aZNm27qQAMGDJDNZtOzzz570yfPzMx0nvP06dP/2ScoRv6T7+B... | [
"4",
"2",
"6",
"3"
] | null | 3 |
math | calculus | identify-functions | true | false | Which of these relations is a function? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAATIAAAE3CAYAAAApC812AAAQxklEQVR4nO3dUWyT9f7H8U8358aG2wKHgVE0CGy98NguYNyyhMC5IVWmQSIak5GYSMKSP3fzVjxRDIl4pbh4Y3C7EWKUHEjgxAS4wRbDQouLp1NRYBeOcZSOsVHAh/4vSncYm4ONPn36ffp+3Rxo6+/52S5v+3TP6TeQyWQyQzekn8elUUf6MyMAKGoPBaRHyqWV1dLih6XA0PVM5rsrXm8LAObmuVrpoZ/Gs3959GGpqSZbOQAoZqOONDAm/XZD+nFcKrvyZ/Y... | 0 |
math | grade-2 | match-analog-and-digital-clocks | true | true | Look at the analog clock: Which digital clock shows the same time? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABOKElEQVR4nO3de3xU9Z0//teZM7dcZpIQEEjCXYVEC4iVRK3oVw1+K9ZHl9CuVLdddNW6Wxddxe4+WuhPsPt4VOgKalsvFerWIl3A/taK/kykl7RIohaBlomoBJAJEENIcnKby5lzfn8MGTJkLp+5zySv5+Phg8ycz8x8mszpvOdz3p/3W9J1XQcRERERESWFIdMTICIiIiIaTRhgExERERElEQNsIiIiIqIkYoBNRERERJREDLCJiIiIiJLImOkJUBbw6YBPh37u38D... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA5AAAAEJCAYAAADiusiGAABYuklEQVR4nO3de3hU5bk//O9aa045TU4gkATCQYWEliCtJGhB32rw3WJ9+zPYLRXsRuuhe9eNvgL97bfF/ip2X1eFbkFtq6BQC0Vbwb5bxb4k2l+bFknUIqEyEeUUmQAxQJKV05zWWu8fkwwJmcOayZzz/VxXrmRmnlnzmMzCdc99P/cjaJqmgYiIiIiIokIQhERPgShmxERPgIiIiIiIiFIDA0giIiIiIiLShQEkERERERER6cIAkoiIiIiIiHRhAElERERERES... | 0 |
science | grade-3 | compare-temperatures-on-thermometers | true | false | Select the thermometer that shows the lower temperature. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHEAAAFICAYAAABnfBEBAAATDUlEQVR4nO2dbYwbdX7Hv2N7d/OwnrucEvLgERxQwFYlShTkQapaJLABwRWISytULTgv+spgJO5erNmtrlKFU0cqpZLVfXVSvdl9cTqpNsqp7Z3WJSocPY2vWxqpYgIUqS9msjnuaBSbJOvH6QuvB3ufJvbOTHZ/8/tIq13P2ON/9M13/g/++vcXDMMwrjaA/7kJ1NpAywCzywkIQNAPPHAAODoOCFfrhlGp3ulmMaMii0Dg85vdB8fHgYcOdhVmdje1NvDpDWC... | 1 |
math | grade-6 | identify-trapezoids | false | true | Is this polygon a trapezoid? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAChCAYAAAD9YcglAAATKElEQVR4nO3dfXBV9Z3H8c85996TGwQ0GFQQRVFLhWoMCBERYheq27rj47pubV11nWpnrN3d6tDtbtudPmynu9t2ux22u2trV6c7jnbr1kqfpkJLQAOBhBAEDFRUNICQ8BhCzj333vPbPwK5iZDnm/zuw/s1wzDzTcL9kIGZD4ff/f4cY4wRAAAAgKxwbQcAAAAACgkFGwAAAMgiCjYAAACQRRRsAAAAIIso2MNRVye1t9tOAQAAgBxEwR6Ohx6SJk2SHn2Uog0AAIB... | [
"yes",
"no"
] | null | 1 |
math | grade-7 | nets-of-three-dimensional-figures | true | true | Which figure will this net make? | "iVBORw0KGgoAAAANSUhEUgAAAMYAAADNCAYAAADjXA+eAAAPxklEQVR4nO3db0hba54H8K9roVYdkjpYxouL0bIzo124chUWrneaSO+LlunF07HzpkzvjS9KAsOQ2Dd1oGCkuzt1X4wn75TC1q7DvJk6PUKLvXDLjZ22sKCXDKwRduZqZKQOyuoTaoyC0n0Rz7nGPInR/DlGv583ktSc/A747fM85znneUrev3//HkSU4B/MLoDoKDpV6C8MBAIoKSlBIBAwXu/+6XA4pD/tdnvhiqQTryTfXSkhBB49eoRAIABN07I6VkdHB9rb2/H... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUIAAADNCAYAAADNPHklAAAZm0lEQVR4nO3df3DU9b3v8WcMP0NgF1pQMJgQjyCJltQgWqJmudoWbvVkI/QexznW5Mxocmd6mo2nc7R32uMynnsL9/ScbO6Z6YDOlOXYY3tuoXyZ4gF7ZdyoQesQu7YmSNWwkAgWFL6B/IRdcv9YviuBBQLZzXeT7+sx42x2wd33hx1efD6f7+fz+WYNDg4OIiJDZGVl2V2CjKLr7C5ARMRuE0b7A0OhEFlZWYRCocTz8x89Hk/Sx/Ly8tErUkQcJSvdQ2PTNNm... | 0 |
math | grade-1 | find-the-next-shape-in-a-growing-pattern | true | true | What shape comes next? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADhCAYAAAC9ZMGZAAAV40lEQVR4nO3dfYxl530X8N8592Ved2d3be/6rTbyYpraaRxESC0rJIi+EVWVEFWbFoFEo1CJ8EcQqRAIm6rEEhQ5pRIoAv4BiYIoqLhSlWb7EqE0aU2VFClt1k5wTdL1evDuJrPenZ2dua+HPybel+zu7Lzce8655/l8JMuKMvc8z/d57rG+58y5d7KiKIoAAAAaIa96AgAAwOQo+AAA0CAKPgAANIiCDwAADaLgAwBAgyj4AADQIAo+AAA0iIIPAAANouADAECDKPg... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAz4AAADhCAYAAAAJS2C/AAAYHklEQVR4nO3da4xkaX0f4P85denrdM/OsjN7Y4mYbMAsZolCMFoRkOJbkGXJSmRDoiDFiFgK+UAULMtRIJYDUi5aHEuJUMKX5IMTxYkcLFnA+oIjzMabGBKCw3DJesN6dqaZC/TsTE9Pd11PPjQ7F6anp3u66pxT530eCaHd7Trv+3vfqlL96pyqyoqiKAIAAGiELMuqnkIt5VVPAAAAYNoUHwAAoPEUHwAAoPEUHwAAoPEUHwAAoPEUHwAAoPEUHwAAoPEUHwA... | 1 |
math | grade-6 | identify-complementary-supplementary-vertical-adjacent-and-congruent-angles | false | true | Which angle is congruent to \angle{1}? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADkCAYAAACi9FP6AAArrElEQVR4nO3df1RUd37/8RdKwtYEIWTi2h6n4iTESdAF7Y4sZ7tfcHE3cDZd8XRRbKuQPYniAgpGTQJxBRU9Ho2QdV2Jmy0Y02okW0l/BNLoCqfpoUirUDUZJTuOHbvHmgmOTsJmDD++f1ipxl/8GLgDPB/nzAFmLnNfY/LHy7efz71B3d3d3QIAAADgF2OMDjDUUlNTVVdXZ3QMAAAAjFCjrmBHRkZq9uzZeuaZZ4yOAgAAgBFo1BXsL774QpJUWVmp73znO/J4PMY... | [
"\\angle{4}",
"\\angle{6}",
"\\angle{3}",
"\\angle{5}"
] | null | 0 |
math | grade-2 | certain-probable-unlikely-and-impossible | false | true | If you select a marble without looking, how likely is it that you will pick a black one? | "iVBORw0KGgoAAAANSUhEUgAAALEAAAB2CAYAAACHxHLJAAAsYklEQVR4nO2de3Bd1X3vP2ufc3TOkY6kI9my9TDI4BcGGwIm5RmluE0ggRkKaUnJLS1pM0Mv/SNtuHeaR5n+w4QwbWmn6eXSdtI0hDRJKQNkcgdoG54hvOwYgsF2MATbkiXbeuu8995r3T/WWnvvIwmwXkeSrV+Ct/Z57cf67u/6/n7rt35LKKUUK7Ziy9jii30Cs7X//M//5JlnnuHw4cP09vbS19dHX18fyWSSrq4uurq6WLduHWeffTbXXnstH/nIRxb7lFdsgUw... | [
"probable",
"unlikely",
"certain",
"impossible"
] | null | 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? | "iVBORw0KGgoAAAANSUhEUgAAALoAAAHCCAYAAABYCNPpAAAx60lEQVR4nO3dd3wVVd4/8M/M7SXlpkMIIYSe0LtgQwQVFUV9VldxsctaVlzdx9+ufXfVfXR1LdhdFcuKYgPsCkqRjmAgJAZIAiSkl9vrzO+PS7IgqTd35pyZOe/XixcELne+ufeTc8+cOecMJ4qiCKbPXD4RJUcj2F8TQVlNBDUtAvwhEYGwCH8ICBz7szcQfbzVBJj0HEwGDmZD9M9mI4dsB48hWToMzdJhWJYOdjNH9htTCY4FvfeCYWBXZRi7KsMoqQ5jf00EjW5... | [
"attract",
"repel"
] | null | 1 |
science | grade-5 | use-evidence-to-classify-animals | true | false | Bony fish are a group of animals with similar traits. The following traits can be used to identify bony fish: They have fins, not limbs.
They live underwater.
They have a skeleton made of cartilage.
They make eggs with no shells. Observe the animals and read the descriptions. Select the one animal that has all of the b... | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAp8AAACmCAYAAACcAuREAAEAAElEQVR4nOz9ebRsd1nnj78+0967qs505yH3Zp5DQiADYIAwBU0YBBQiAoootiKIKAo2tLqQRpSm6QZtG7UBEaFZ4GIQGgSZgoRfCNAgESIxkPHmzmeqYe/9GZ7fH586JzlkwojQX7JfWXflnDpVe65dTz3D+62uXhY5bQCzho6Ojo6Ojo6Ojo5/F1Yj/PMI1EoQ6QLPjo6Ojo6Ojo6Of29WIygRkR/0hnR0dHR0dHR0dNw/sHf8Zf7MR6CUotcr2TQ7x1y/x9z... | 0 |
math | grade-3 | purchases-do-you-have-enough-money-up-to-10-dollars | false | true | A mixing bowl costs $3.75. Do you have enough money to buy it?
| "iVBORw0KGgoAAAANSUhEUgAAAvgAAAHkCAYAAABL3lueAAEAAElEQVR4nOy9e5wkVX33/15uVnORU4jQhQp7QJEaUOkWL9MIZNuX0TQmxhkjZgaN0HiJs68YnTHis8OTnzorRmfik8h4yeMQNeyYqDMagVa89OKtRw12kydxS/FyVqNW4+0cVOgCwfr9caqqu2dnLwjKhtTn9Zrp7qpzv1R9v9/zvWyK4zgmR44cOXLkyJEjR44cDwoc8kA3IEeOHDly5MiRI0eOHPcfcgI/R44cOXLkyJEjR44HEXICP0eOHDly5MiRI0eOBxFyAj/... | [
"yes",
"no"
] | null | 1 |
math | grade-5 | is-it-a-polygon | false | true | Is this a polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACHCAYAAAAslC4OAAAHlUlEQVR4nO3dy5NUdxnH4bc59IzcNMkCUWYsL4lcwjVlWRU3/gOWsUiMZhMjISHRCjGXVTaWGxeKSNQqNYCBZIMpoDTLbCwrWbgKYIAZEqJU5UKgLFk4t55Dn3bRjUwhgRnmN9Onu59n3Yt3MYvPnP7W6Uqj0WgEAACQxIJ2HwAAAN1EYAMAQEICGwAAEhLYAACQkMAGAICEBDYAACQksAEAICGBDQAACQlsAABISGBTCg8cn4z+1ybi8Pl6u08BAJgVgQ0AAAkJbAA... | [
"yes",
"no"
] | null | 1 |
math | algebra-1 | identify-linear-functions-from-graphs-and-equations | false | true | The graph shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAfwAAAH8CAYAAAA0Uh0TAABlj0lEQVR4nO3deXhU150n/O+tTbtUQgJJgCWMWWywwGBjGwyx3XbbjrcOJGmcTOJ4xt3TziRxJvNOz5PO05NJ8hpP5ulOuuPY6SQz7tjO9NueeIKdsAiMAwYi2cjIIJDALAK0oLWk2pe7nvcPqWRkSaCS6tQC388/tkp1vxzdW/f87jl3KUUIIUBERERXNVu6G0BERETyseATERFdA1jwiYiIrgEs+ERERNcAFnyiFHih3URzMDuuj/3Xf/1X1NfXj/5sGAaee+45RCK... | [
"linear",
"nonlinear"
] | null | 1 |
math | grade-8 | identify-similar-triangles | false | true | Are these shapes similar? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD7CAYAAABQdOO0AABFzklEQVR4nO3deVjU9fr/8eewCy6IiuICIpgKgmWu2KJWamqLuWaLYfbV0lOdfh1LMctyySxbjh3b1Kw0t1JTU0tzSy0qSxFcU8AdFVcQgYHfHwOjGG4w8pnl9bguL2Bm+Mw9XueMr97zft+3KT8/Px8REREREbEJN6MLEBERERFxJgrYIiIiIiI2pIAtIiIiImJDCtiXiI2N5bXXXjO6DBERERFxUArYl0hISCAqKsroMkRERETEQSlgXyQvL4+kpCQFbBEREREpMQX... | [
"no",
"yes"
] | null | 0 |
math | grade-2 | which-table-is-correct | true | true | Eddie found the following desserts in the kitchen:He decided to count how many of each there were, so he made a table of the desserts. Which is his table? | "iVBORw0KGgoAAAANSUhEUgAAAS0AAADJCAYAAAB2QWTOAABXh0lEQVR4nO39d5Rd933fe793+e12+syc6YMOkAAJghRBCpREUyySrUbLshQvM5buda6Wu7K0fJ343jzJVeys3DzOk7jE9sqj2PdGziPLsnTVLDGRJVFmEYskkmABC+qgzWDa6Wf38nv+OABISpTEAmAGnP1aC4sgZgDu88M5H+79/ZWv8q//9b+W5HK53GVCB/jEJz6x2teRy+Vyr4i62heQy70gv+nP/WT6al9Abn3L+h36D/935IF7MDunUEc3ws5bETe9F8Uqrfb... | null | [
"iVBORw0KGgoAAAANSUhEUgAAApcAAADJCAYAAAB2dxk/AACYRElEQVR4nOz9d5zdV33v+7++vew6vat3WZaLXLExLhTjAjgQLk7sA7kcIAnkRxII5NyTQEjhckioyY9DQhICHEIgYJqJKQZ3y8a2ZFmyrDajNn12399e1v1jS7IpoQRZI9nf5+Ohh0Z775lZ3zWjvd97rc9aS3rve98ryGQymTPEe9/73sVuQiaTyWR+BhXgPe95z2K3I5PJZH4hWbjMZDKZ05u82A3IZJ6WDaJnMplMJnOmUxe7AZnnt7TdoP3gtxA778RoHEH... | 1 |
math | grade-8 | identify-linear-and-nonlinear-functions-graphs-and-equations | false | true | The graph shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABfsklEQVR4nO3df3iU9Z3v/9dkZvI7ISHBJAYTRAQFEwQFC4LiYtVq6wqti+2329J122NPbbXfvfb77bXb0217XL69rl271VVP17Ndsef0unrqVXWrGCkIAg1VJEIkATEGCAmQH5Of8/ueH/f3j5CUKEhC7g/DwPNxXa3MJPcr79z3zD2vuXPPjMu2bVsAAAAAHJGR6gEAAACAiwkFGwAAAHAQBRsAAABwEAUbwKhbbrlFL7/88ujl3/3ud7r22muVTCZTNxQAAGmGgg1... | [
"linear",
"nonlinear"
] | null | 1 |
science | grade-3 | natural-resources | true | false | Which of these pictures shows a natural resource? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAV4AAAElCAYAAACszooYAAEAAElEQVR4nOz9WZMlSZbfif2OqprZ3X2PPSL3rMzauwtAdTeAwWDAliGJ5gOJFwq/A5/4EShCET6RD6RQ+EoKH4bDEcpMg9ikpwF0A91AV1XXvuUWGZGx+e53t0UXPqhdd49I39I9PCIy6/5F3K/7vdfM1NRUjx49y//ID/ohfK0NXc0cc8wxxxzPEUMHvx3D4xKWDPyDxfi+mgvdOeaYY47LQVfD19rx75E7eF/Nhe4cc8wxx+VhJmOrcPCeOeqLf/C//VOss4B... | 3 |
math | kindergarten | flat-and-solid-shapes | true | false | Which shape is flat? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAATwUlEQVR4nO3de4xdxX0H8O/Muffu3bu73l128St+JWZNIEDaksSlKlQhbdSCSJRS0koNaVUpaiuUpEr+C01VtSD+SAJVHlLp6w/yJ0RRIZSqAaISKh4pbQokrY0NXttge+31et/3dWb6x5xz16zX9j7OzO/ce78fCflY1s4Mkr8+58z8Zo6y1tqTdeDQAjAbA00LIvKkoICBCBirAFtKgDpZs/blGelhEXWf/ZuAwhsL7jfbSsDVfS6dROTHbAwcmAdO1IGDC4C... | 1 |
math | grade-8 | apply-multiplication-and-division-rules | false | true | The number line shows an unknown number, b. Is 3b positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAGaElEQVR4nO3dX2hTZxzG8eckzWnXP7RB6taBImNjW5EWa42tKMjYnTiodBderJMJgiJ4N2F3gyJ4IwwUFIRBB0VwVIbbbraLpd4kqVFSOgu7adfCCnZi3axtTpqcXeSP7ew/MZ43ab6fi5K86cUDJ5SnL7/zHst1XVcAUEYGBwdlWZaOHz9uOgo8wjUHUE6qTAcAgJc1PT1tOgI8xjUHUE42XbBTqZTi8bii0ai2b9/OLgJQxtIzA0rPfKfM04QkyVffLn9Ln/wtnxl... | [
"negative",
"positive"
] | null | 0 |
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? | "iVBORw0KGgoAAAANSUhEUgAAAdcAAAA0CAYAAADYI3JZAAAGD0lEQVR4nO3dW2wUZRjG8Wf20MOyLbWIViinUlIJKBYTrCIqAY3HqoBSJfHCoIlBPF0YDzFcGYynKMbEqBdIUIkaoTGKBkJKawXUGMWQGi1Ca6AQrVK2pds9zHixqa0nwN1vZ2rn/0t6N/nmSzp9nrb7zox1X0udk7Tjgnv2Nm2TY4e83oavfLqmTJbl9S4gSY4crWqe6/U2fMWxg9rbtE0SPwRuCTiO7fUefIgL3G2O1xvAMHw33ObIErnjroDXGwAAYLShXAEAMIx... | [
"repel",
"attract"
] | null | 1 |
math | grade-4 | is-it-a-polygon | false | true | Is this a polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEBCAYAAABCCtJ/AAAcKklEQVR4nO3dT0zbd5rH8c+MkXDAyBGORMGuqJRiR+qqVAPagVvg2DScEu2qqMllo3DcRM1lZrdRMqO9JNr0CJpeJlWiGYUTKT3i3GBXjjSuNlJtEimoxo2lGMWyMUYy6h7M7xeT5o+Bn/374/dLqpomDTyHRv3w8DzP9ze//PLLLwIAAABgid/aXQAAAADgJQRsAAAAwEIEbAAAAMBCBGwAAADAQgRsAAAAwEIEbAAAAMBCBGwAAADAQgRsAAAAwEIddhcAdyhXi1r... | [
"no",
"yes"
] | null | 0 |
math | grade-3 | purchases-do-you-have-enough-money-up-to-10-dollars | false | true | A bottle of shampoo costs $3.31. Do you have enough money to buy it? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAGOCAYAAADisXeiAAEAAElEQVR4nOy9eXwkV3nv/R28VWMbnzIO7jLYnmOzuMTaHTY1YGeaS4C2ExIJDEh2iC2bJZp7CYzC8o6cBNAAN0hZrSQklgM3liAYCYLtBrP0wAW3AjFdJoEp9mMIUM16DovdZYOp949TVd2t0czIC/bEt36fj9TdVafOfk49z3OeZVuSJAkFChQoUKBAgQIFChS4X+AB93UFChQoUKBAgQIFChQocM+hIPALFChQoECBAgUKFLgfoSDwCxQoUKBAgQIFChS4H6Eg8Le... | [
"yes",
"no"
] | null | 1 |
math | grade-6 | changes-in-mean-median-mode-and-range | false | true | Look at this set of 9 numbers: How would the mode change if the number 5 replaced one of the 1's in the set? | "iVBORw0KGgoAAAANSUhEUgAAARIAAAAkCAYAAABFY7UnAAAE8ElEQVR4nO3cW2gUdxTH8e/M7mY3JjHGJEZjYmKtURqMt4C1NhrR2NZSWmprEVQsBZFCMUXpQyn0+lRBULBUShGtFKuVtIp4A1O14K22xKJEExM1aRIv2Y1Zk+7O7s70IclivIB0Znaa7fm85f9wzvxgOfnPzJ9RDMMwAKI6hDTQDTAQQohHUwBVAV8KuNX+NcMwjFAEwlFHr00IMQR53eDzgBrVZYgIIf6dcLTvbkYNR5y+FCHEUBaOgBrTnb4MIcRQFtNBlQerQgg... | [
"no change",
"decrease",
"increase"
] | null | 2 |
math | grade-5 | scalene-isosceles-and-equilateral-triangles | false | true | Is this triangle scalene? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADECAYAAAClWFbMAAAhzElEQVR4nO3dfVTUdf738deACCgio6KCkKKIgnhTrmW6u4Y3wUK65g87dv20U2blTXtpnu1may9XL9dtvVm79fr52+xm02rLm9QSQTexTFsiEu9QKaWiwrCCn0kwwTDXHzVjyKCAM/OdGZ6Pczyng19nXp7+efk57+/7Y7LZbDYBAAAAcIkAowMAAAAA/sTnCnZVVZUSExOVmpqqmpoao+MAAAAADfhcwc7JydGJEye0a9cu3X777UbHAQAAABrwuYK9e/dux3+/+uq... | [
"no",
"yes"
] | null | 1 |
math | grade-6 | changes-in-mean-median-mode-and-range | false | true | Look at this set of 6 numbers: How would the range change if the number 46 replaced the number 21 in the set? | "iVBORw0KGgoAAAANSUhEUgAAAPEAAAAkCAYAAABYONyVAAAInUlEQVR4nO2caVRTZxrHfzeJicGAKAiKaMENUdxQ9MjmWqxWa93teMq41PZQtdPRTu2008Vpe9pOWzt2qmPXM44r1l2PiEcrSpWqiFpUUOogpSMgLqxJyHbngzY9qVqZkktIfX9fQp773Pf5f3j+3LxP7o0ky7IMYHHYMFrN2GUHMgKBoCkiAWpJhU+z5mhVmpsxWZblWlsdJludZ9UJBIL/Cx+NDh+NDo3FbhMGFgi8EKOtDo2kRmWyWzytRSAQ/EpMdgsqm8PuaR0... | [
"no change",
"decrease",
"increase"
] | null | 0 |
math | grade-2 | which-picture-shows-more-up-to-5-dollars | true | false |
Which is more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAlYAAAGUCAYAAAD3bWw9AAEAAElEQVR4nOz9PWwkybbnCf5uo2dgLixgBswA7lqa1k7NYyVG7wgZT4urkS2RV6q4GlNLKoPklR5zRlhSK2qXJV1SGlKr0F6ksOgIacO19JbWSlp37M7ADFjBDTuDfSscc48gK7Nu3X71+vVLxAEyw+lubmZun8fO+Z9zfvfp//W//+P6f/s/APgd/wj8jgMd6EAHOtCBDnSgA/0a+kf+kd/BP8L/5b/7t/zbzf/2f+yxUgem6kAHOtCBDnSgAx3o19PvhHv6Hfz... | 0 |
math | grade-2 | place-value-models-up-to-hundreds | true | false | Which place-value model shows 929? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAASIAAAC7CAYAAADBoJOJAAAeK0lEQVR4nO3da4wk13ne8X+dqurq+3TP7MzOLrmkluRKoEiZlGSRkinaEmQmoiXasi3IikwQUZT4SxCLDgQkQBAItgAlAQJ/CIIEEBwLdmSHpmBGlkRbISVKlKjAZkyKCmLZvC25y+XucufS91td86G6py/T1bOe7unqGb4/oEEuu3jqzMz2O6dOneeUFgRBcNmGl5pQ88ANEEKIA2VokNPhTBqOJ0C73AmCp6txd0sI8WZ1Zx6MF5vhH04k4G2ZsEoJIcRBqnn... | 1 |
math | grade-5 | parts-of-a-circle | false | true | What is \line{KL}? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADJCAYAAABWm0bCAAArLElEQVR4nO3deXxU9b3/8fdMJjNJCAmQEAiELSEIKKAsoQIqIFBQQC2uVyuIFqtiUSlaLcq1Lv25VitabRXBpWKV6q2iVFkVRSBsiawBDBACWclGkkkmM78/IpMZEzZJOGcmr+fjwYNzzpw555PM+eM933zO91g8Ho9HAAAAAIKCzegCzgaLxdKox+M7EQAAAMyqWQR8AjkAAACaC6vRBQAAAABoPFaLxaKVK1fWe2HIkCGKj4+vtz0zM1MWi0WvvvqqXn/9dVksFrl... | [
"chord",
"center",
"radius"
] | null | 0 |
science | grade-3 | classify-rocks-and-minerals-by-color-shape-and-texture | true | false | Select the brown rock. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAADaM0lEQVR4nOz9yZPlWZbfh33u9Bvf7EN4jDnX3N0AATRoxIIAB8lMpo1MRq210X+lBWUmyriQKIqiURIhAk2iAaHQje4GUF1jVk4xevj0pt98By3uz19kZmVlFZiZjQIZx8zTIyPc/T1/75577znnO4gQQuB1vI7X8YUh/00/gdfxOn6X43WCvI7X8SXxOkFex+v4knidIK/jdXxJvE6Q1/E6viReJ8jreB1fEq8T5HW8ji+J1wnyOl7Hl8TrBHkdr+NL4nWCvI7... | 0 |
math | grade-7 | apply-multiplication-and-division-rules | false | true | The number line shows an unknown number, d. Is d 4 positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAGKElEQVR4nO3dT2iTdxzH8c+TNn9Mra5DncrUXjb/IBRtjW2RzZsMcVKngpciOwg6t3qa7OZBZB4mCnoQ3BgeijqodMI22Cm6Q5I2lkAxOAbWin/WqjhtbdKnzbNDTLRrbbv2aZ4+6fsFocmT5/CBJ4cPv36f32NYlmUJcLHm5mYZhqF9+/Y5HQUFwjUHAMxmpU4HAKbr3r17TkdAgXHNAQCz2aQLtmmaisfjikajWrJkCStHAABMVqJVSvwsPbqd/bx0tVS1U6r61Nl... | [
"positive",
"negative"
] | null | 0 |
science | grade-2 | identify-animals-with-and-without-backbones | true | false | Select the animal that has a backbone. Hint: Mammals, birds, fish, reptiles, and amphibians all have backbones. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAEAAElEQVR4nOz9R8ytSZrfif0i4vXve/z57PUufWVVVmVVdVdXe0PPoVvQjCiDgcDFQBtJ0FYjQNoJ4mIILTgzkqjRjIZGTVIUu6fJtmVYXSYzK33m9fd+/jv29S4itLgjzKYXBHIzAjpWB4GzOz885zH/5x/iR1trX45hoPjT86fnf5An0/BZAactTBz49vjFvfxTcP/0/A/9DBS8HL/4nOv//l7+Kbh/ev7/4fz/OO3sf3/n/Elf/N/+g3+OFi49AqUEaBDGots... | 0 |
math | calculus | domain-and-range-of-exponential-and-logarithmic-functions | false | true | What is the domain of this logarithmic function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABhpUlEQVR4nO39fXTU9b3vf78mk8l9QkICCUYTRAQFEhAFBUnFYtVqty24u3F37bbuy31ae2rb07NWz+XV1fbs3eXydJ29233Vo7Xbc3rUnmuvX1uPN61goFgQECo3EYIJiDFCboDcTG4mc/+dm+/1B00k3JgZ+H6cRJ6Ptbpshnxfeef7mfnMez75znxctm3bAgAAAOCIrEwXAAAAAHyS0GADAAAADqLBBgAAABxEgw1gnOrqau3evXvs62PHjmnGjBnq6OjIYFUAAEw... | [
"$(-\\infty,-2)$",
"$(-2, \\infty)$",
"$(-\\infty,-2]$",
"$(-\\infty, \\infty)$"
] | null | 1 |
math | algebra-2 | describe-linear-and-exponential-growth-and-decay | false | true | How does f(t) change over the interval from t=1 to t=4? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABwgklEQVR4nO39e3RT95kv/r91sy3fsLGNbUxsQrgkBtuEYFIIDjYmgYQmU2h7SPttM6SQND1N29P1PdPVNdPT37QrK9+cNdN2NZNk0hRCknNmVk+zSnIaiCGAL1CTcDFgsCHEGPANfJEty7rvLe39+0PIF26WYH8syX6//mFZaD9+vLe09ejtj7d0qqqqICIiIiIiTegj3QARERER0WTCAZuIiIiISEMcsImIiIiINMQBm4jGqK6uxuzZs7F+/XoAwFNPPYUPP/wQAHD... | [
"f(t) increases by 4",
"f(t) increases by 6",
"f(t) increases by 600%",
"f(t) increases by 100%"
] | null | 1 |
math | grade-1 | find-the-next-shape-in-a-pattern | true | true | What shape comes next? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADhCAYAAAC9ZMGZAAAad0lEQVR4nO3dW2xd133n8d/e58KLeFFpR7JsRU4r22pQx1Y7NtJOnEmAdBQHBdw2CdDMFBMEUxRtB/NSdDJ+aIzBTFygTR/qTlN0BtOiboB2MsAUBYK0dVLFia5MRNM2K1uWTFGiZYmiJZESRZ7Dc/a1D7QsyRLFc9l77b3X+X6APMTg2Wv9F/7i+XGdvddx4jiOBQAAAMAKbtYTAAAAAJAcAj4AAABgEQI+AAAAYBECPgAAAGARAj4AAABgEQI+AAAAYBECPgAAAGA... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAz4AAADhCAYAAAAJS2C/AAAgLUlEQVR4nO3da5BcZ33n8d+5dPfMaC7KyNbNsgzItmBjbJHIZbII7CqIcJaNIcBW2FBQ1Ga3yG72DUUcUhWoZRdTtZBsxQmkqK2EwqFqWW/VUrtLEWKwLazrGI3HtpAtSx5dxrI0Go00I41muqf7XPfFoJs1o5npPvf+fqp4IXn6PP/n4a/p/p1z+jlGGIahAAAAABSCYRhpl5BJZtoFAAAAAEDcCD4AAAAACo/gAwAAAKDwCD4AAAAACo/gAwAAAKDwCD4AAAA... | 0 |
math | kindergarten | name-the-two-dimensional-shape | false | true | What shape is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD1CAYAAABqfoLEAAAFDElEQVR4nO3YsQkCARBFwbtDBIuwOFN7sQDLs5K1AzV4cnDMxBv88LHrzMwCAAAktr0HAADAkQhsAAAICWwAAAgJbAAACAlsAAAICWwAAAgJbAAACAlsAAAICWwAAAidfj18vu7/3AEfnbfLcrs+9p4BAPCVDzYAAIQENgAAhAQ2AACEBDYAAIQENgAAhAQ2AACEBDYAAIQENgAAhAQ2AACEBDYAAIQENgAAhAQ2AACEBDYAAIQENgAAhAQ2AACEBDYAAIQENgAAhAQ... | [
"triangle",
"circle",
"rectangle"
] | null | 2 |
math | algebra-1 | perimeter-area-and-volume-changes-in-scale | false | true | Look at this cube: If the side lengths are doubled, then which of the following statements about its surface area will be true? | "iVBORw0KGgoAAAANSUhEUgAAABEAAAAOCAYAAADJ7fe0AAABSElEQVR4nM2SoavCYBTFj8K0rTg/s1scLBg+bP4FmowimGyzGFc0mY3rBoPZsmT5wKKYbBYFBWEyUETEY5A33nsGEV94N93LPffH4XATJIkPK/kpAACSt9sN7XYbuVwOhmGgVqvheDw+Cc/nM6SUMAwD2+0WQRBgvV4/lr7vU0rJ/X7PKIpYKpXY7Xb5uxaLBYUQvF6vJMlKpUKlFEkSSinO5/NY3Ov1WK/XfwDCMKRlWUylUrRtm57nMZ1O0zRNjkYj4rt4tVqxUCh... | [
"The new surface area will be\n1\n4\nof the old surface area.",
"The new surface area will be 9 times the old surface area.",
"The new surface area will be 2 times the old surface area.",
"The new surface area will be 4 times the old surface area."
] | null | 3 |
math | pre-k | ordinal-numbers-up-to-tenth | false | true | The first picture is a bear. Which picture is fourth? first | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAniElEQVR4nO3de1xUdf4/8NeBIRkYGAwWaQXEHANNBGy9gmWPTcu0dNtab9t6a3+7orW2rqhbm/D9auKlsg3R7+/nte/XdLWbpuWl3eyrmJYJggquwzaAJiq6jAwzKMOc3x+HGWZgLmcOZ67n/fwrmHPj04eXHz7nc2FYlmVBCCGEEEIIEUWIrx+AEEIIIYSQYEINbEIIIYQQQkTksQZ2YyuLvofvIOsfTWhspVEohBBCCCFEGgQ1sD+91oqCqhanDedjDUZo9CaUads... | [
"bear",
"plane",
"train"
] | null | 1 |
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