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-8 | apply-multiplication-and-division-rules | false | true | The number line shows an unknown number, v. Is 3v positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAGO0lEQVR4nO3d32tTaR7H8c9JPSdpUtvJ1Maprq2wV1sEEWtsRWaFvZlBXEhXWLwpgiCjeDNX/gErgpcDCgpeOVi8mXgheJ92WZq0VcoEKyy7tnWWYaodKZPfaZO5aBvt2h8ZJj1P2rxfVz0P5+IDJ6Ufnn7PE6tcLpcFADvI0NCQLMvShQsXTEeBS3jmAHaSPaYDAMBv9fr1a9MR4DKeOYCdpOqCXSwWNTExoXg8rlAoxC4CGkopXdbb6ILyMwVlpvLydtvydTsKfrF... | [
"negative",
"positive"
] | null | 0 |
math | grade-1 | name-the-three-dimensional-shape | false | true | What shape is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACiCAYAAAB79bqLAAAaQklEQVR4nO3dWZBb133n8d+592LtjeyNpLg0xaXJFheTlhWX5MRKeVLJTMpVTjz22DO2bMsuW56HqZqneZy3eZqneZmK7EkkJ07slCeucsqVGU85TqI4UiyHNilSXJpNihQXkc3uZq/YGsCdBzTQQANoAuiLBnDx/TwI6NMXFwdo3eIfB///+RvXdV0BAAAA8ITV6gkAAAAAfkKADQAAAHiIABsAAADwEAE2AAAA4CECbAAAAMBDBNgAAACAhwiwAQAAAA8RYAMAAAA... | [
"sphere",
"cube",
"rectangular prism"
] | null | 2 |
math | algebra-1 | identify-linear-functions-from-graphs-and-equations | false | true | The graph shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAfwAAAH8CAYAAAA0Uh0TAABmOElEQVR4nO39eXhc5Z0mft+nNi2l1ZIsybIlY7yAjRcMhngL0NBAIKFjJz2QTEKYofsaMklIZ66ZuTL9dmc6+QGT+XUnPWEgnWSGCaSn38mENw4dL8IYbGxHDhYWtmzJxpZlW1JJ1lJSVamWU2ep87x/yKVYlmRVSfWoqqT784+vKte569F56pzvWZ+jCCEEiIiIaE6zpbsBREREJB8LPhER0TzAgk9ERDQPsOATERHNAyz4RDTG//k//wcNDQ2jr03TxAsvvIBIJJL... | [
"nonlinear",
"linear"
] | null | 1 |
math | grade-3 | is-it-a-polygon | false | true | Is this a polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADfCAYAAADMSaSUAAAZt0lEQVR4nO3dPXBTZ77H8Z8tWZIt++Jb2a5wZvDiVMg0cQo70CHT4NkbCNUCbvbOJnG22hAo44StNrDJbBoItwomc2/cYNNB7AKnsUUVJ2ImSiXRiZVsH8mSzi3kI2TxEr9IOufofD8zmSSQCc8wePz14//zPG2maZoCAAAAUBftdi8AAAAAaCUENgAAAFBHBDYAAABQRwQ2AAAAUEcENgAAAFBHBDYAAABQRwQ2AAAAUEcENgAAAFBHfrsXAOeKp4rKGqZWEwVJ0i/... | [
"no",
"yes"
] | null | 0 |
math | grade-1 | subtraction-sentences-using-number-lines-up-to-20 | false | true | Which subtraction sentence does this model show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABhCAYAAADsidaRAAAXNklEQVR4nO3de1BU590H8O9ykyJXFVRSwoqpGA2Kl4hoU2+juUetkWomE7E1JqZ9bTTjGBM70YRWU3PRiZ1MbGZqbIrjrWBM6+j7GgEnyEUErTqaRl2VLBgXBLkKK/v+cTzLTYRdDvs85/D9zDC77DKb39fAPr99znOeY3I4HA5Qr3K1Gljwf8DxH4H8ucD4cNEVuYc55MIccmEOIiJxvEQXQJ613wLE71UGLT1jDrkwh1yYg4hILDbYvcitBmDe/wIrRwGbJoquxn3... | [
"8–8=0",
"10–7=3",
"8–7=1",
"9–7=2"
] | null | 2 |
math | precalculus | determine-continuity-using-graphs | false | true | Is f(x) continuous at x=7? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB/kElEQVR4nO3deXxU53n3/89oRvuOBBIIJHYMWOyL2WwcvDt2jJfgpFmcOEmdtc3Tps0vTfM0qR83zdI2ibPUTRrbadrEbrzE2DLBBgMWZpNBIIFZBAgJoQ1tI2n2md8fBwEymwRz62ik7/v1Oq9ZNOfSNefMnLnmnvvctyMSiUQQEREREZGoiLM7ARERERGRoUQFtoiIiIhIFKnAFhERERGJIhXYItLLhg0bGD9+PHfffTcA99xzDy+++OJFHxsIBLjhhhvYtm3bQKY... | [
"no",
"yes"
] | null | 1 |
math | grade-4 | compare-fractions-in-recipes | false | true | Does this recipe call for more Parmesan cheese or parsley? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAGeCAYAAACuOnbpAABhqElEQVR4nO3de1TU1f7/8edwl4siKKiYaZKV5i0pzSuZ5ZWOlqWZnkg7mqamKednWkliZVlphuUtMzWPtzyafUvzcizNKyoaKYYmJggiIgJyHWZ+fxCTBCjYjJC8HmuxVjOfPXvvz2BrXrN5f/bHYDabzfzObDZjMpkwGo2WHzs7OxwdHXFwcMDe3h6DwYBIVWQ2m8nPz8doNJKXl4fJZMLBwcHyY2dnp/8/REREBENhwDaZTOTn55OXl0deXh6Ojo5Uq1ZNgUGkFGa... | [
"Parmesan cheese",
"parsley"
] | null | 0 |
math | kindergarten | flat-and-solid-shapes | true | false | Which shape is solid? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAd8UlEQVR4nO2de3hU95nfP6PRHXRBAnThIhGMxC0SNmDALBCT2E5iY5w26+RZX8g6drbZXdfZtN3utk033aTdPsnu0zqbzSZx49R2brbbOODNxng3GOOkNrcYES6SsEHDRUgICV1H0khi+sc7R2ckbpKYc37nzLyf59FzZkZozgvoO7/f770GotFotCUC74WhZwSGoyiK4hDpAcgLwqJcKMmEQMtgNLqv27RZipJ6rMmH9BNheVKWCdXTRJ2KojhDzwg09MH5CDS... | 0 |
math | calculus | determine-one-sided-continuity-using-graphs | false | true | Is f(x) continuous from the right at x=7? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABunUlEQVR4nO3deXRU550m/ufWptJeQhKSjJEAs9jCkowwYDAYCMR2vMXgduxkHDs5jrudieMkp5MzmXSS3+mE8aQncTJxHE8mE7eXdLrTIfEKFhib1ZKNQIBAAoMsQAugpaSqUq13//0hJKtYVXBfSoWezzkcu5b71Ff3rbr1rbdu3SuZpmmCiIiIiIgsYUt2AUREREREVxM22EREREREFmKDTURERERkITbYRBRn8+bNmDJlCu6++24AwL333ovXX3/9nPdVVRW33HI... | [
"no",
"yes"
] | null | 0 |
math | kindergarten | triangles | true | false | Which shape is a triangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACKCAYAAABSKVOMAAADoUlEQVR4nO3awU4TYRSG4W/awgJBdxovQF2y5DK4Vm+DnUvEvbil0ASkGRcTSEVKW5n5/nP+eZ+EREKC5z/nTVc0bdu2l3fSj4U0X0r3rYBXmzXS0VT6dCB92Jeay9u2PbsqPRZqdvJWml0sum8+7ktf3nQVAq81X0rnN9LPO+n7Qppc3Xc/IDL06WjaNSVJ10tpslz5AdCnh6Z+t9Kk7CgYC0KDBaHBgtBgQWiwIDRYEBosCA0WhAYLQoMFocGC0GBBaLAgNFg... | 0 |
science | grade-6 | use-scientific-names-to-classify-organisms | true | true | This organism is a gray tree frog. Its scientific name is Hyla versicolor. Select the organism in the same genus as the gray tree frog. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOydd5xcZdm/r+ecme29976bnmx6I4EEAoFAIBA6SlN5BQRBEctPkSKW+CKICKIgoLyAQXoglUB6Nn3T+/be++7MOc/vj1NmZjehSF551XPx2Q+ZmdPPmd37uZ/v/b2FlFJ6vV50XcfBwcHBwcHBwcHBYSiKouByub7sw/hMKE5w7+Dg4ODg4ODg4PDJ6LqO1+v9sg/jM6E4wb2Dg4ODg4ODg4PDp/OvEjcrX/YBODg4ODg4ODg4ODicOZwA38HBwcHBwcH... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6IAAADMCAYAAABp7h4wAAEAAElEQVR4nOydebxcVZX9v/ucc6vee5lJQkKYSRgFEmYaBUQcEBShRXFGUNufguJsqz+lFRsHbMQBBxRUlJ8otvMEoqggYpg6AZmHhCkJJGROXtU9Z+/fH+feqnovAYLS0q219H3yXtWtO5x7b3HWXWuvLWZmMUZUlT766KOPPvroo48++uhjQzjnCCE81buxSRCRp3oX+ujjceH6JLSPPvroo48++uijjz4eG6pKjPGp3o0++vi7QeiT0D766KOPPvroo48++nh... | 2 |
math | grade-2 | even-or-odd | false | true | Is the number of circles even or odd? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACgCAYAAAA2PRuAAAA0dElEQVR4nO3dT0wUab8v8O97czai1+pcJsGF2H3CRDdqt0vBc7uN72USHULjYib6jkOzE13Q5MXomJxLcU8yoxkmNAvFXTfjDGZcSBtkEn1fL805gEuqZTYYPbQwCzzRS/Ub7Fn2XTRPUSACYv15qvl+ktkYp6ss6vn9vr+nups/FYvFIoiIiIiIyBL/ze0TICIiIiIqJwzYREREREQWYsAmIiIiIrIQAzYRERERkYUYsImIiIiILMSATURERERkIQZsIiIiIiILMWA... | [
"even",
"odd"
] | null | 1 |
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 | [
"iVBORw0KGgoAAAANSUhEUgAAAJAAAADqCAYAAABN/8wfAAARgklEQVR4nO3de3Bc1X3A8e+59+5q9X5atqyHLcdvXAKxjTFmDCEUCDgpLjRlBhzGSWimTfpHQj20TEtIaJMhlE7LpKQTyiMFHEjSlMAQQgbjAMEGDBSIi8GWY2TLkvV+S/u69/SPu7KeK8kcy9Zd/T7/GO9qr1d7vzr37F5xj9Ja6xNxqBuAXheSGiHSchTk27AsB+aHQZ2Iaf1Gz9l+WiKINhSAc2jA/0tFGFbk+nUJkU6vCx/2Q1McDg6A1ZP075B4xHTk234... | 2 |
science | grade-2 | compare-properties-of-materials | true | false | Which is harder? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAA9h0lEQVR4nO29eZgc1Xn/+zlVvW+z9WgWjbYZ7RKgBSSx2KwGh8VxIF6wzWM7tpM4uTZ2QhwS+F3HSRxvsa9zwQGS+Dp2bIiDV8B2AgQvLDJCLAIJAdqX0ewzvS/VVXXuH6fXmZFGmunRtER/n6ee7qnuqTpV9e33Pe96xHNRKVf4IahTRx2nFXELXk9CnwFNDrikUe3X6oSsY64Q1GGFX71PWKX9Wp2QdcwlCvzLydI+bW6GUkcdx0edlHXUHOqkrKPmUCdlHTW... | 0 |
science | grade-8 | use-scientific-names-to-classify-organisms | true | true | This organism is a Canada lynx. Its scientific name is Lynx canadensis. Select the organism in the same genus as the Canada lynx. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOzddXhe9f3w8fft7nGXJmkqqbvQ0lLaUqS0pRT3oQPGgAFjjLENWDdkyHArLkUKNereVNIkTePuuZPbXZ8/+jQPxdn62/bwO6/rynXltnO+55zvOefz1SOKx+PxSCRCLBZDIBAIBAKBQCAQ/HRisRipVPqfTgYAYiG4FwgEAoFAIBAI/jWxWIxIJPKfTgYAYiG4FwgEAoFAIBAI/nX/LXG1+D+dAIFAIBAIBAKBQHDqCAG+QCAQCAQCgUDwMyIE+AKBQCA... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6IAAADMCAYAAABp7h4wAAEAAElEQVR4nOy9d5gc1Zm+fZ9ToXNP1ORRzhKSkBCIJBBBCCwTRbbBgO0F47jGsLbXi/mwDV6cMMY2GDDBZIxJJoicBCjnnKWZ0eTUuarO+f6onkYCDMJm8f68fV/XgLqnu+pU1amaeup93+cVWmvtui5KKYoUKVKkSJEiRYoUKfLxkVJimuY/exgACCH+2UMoUuQjkUURWqRIkSJFihQpUqTIP4ZSCtd1/9nDKFLk/xnMoggtUqRIkSJFihQpUuQf53/LffWiXs2... | 0 |
science | grade-8 | compare-thermal-energy-transfers | false | true | Two bottles of soda were sitting on a porch on a hot day. The two bottles were identical, except that one bottle was made of brown glass and one bottle was made of clear glass. This table shows how the temperature of each bottle changed over 25minutes. During this time, thermal energy was transferred from ____ to ____. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAABfCAYAAACdpLOcAAAe9UlEQVR4nO3dfVxUdd7/8dcMAzOIiIqsu+bdeAsq4k2hdGGauP5c1oftovarC2vLvGlzy+4sDbcfiUm2lnkZucWaa2VqPtx2L8srcc1VzFKShLyJFDFbKy8QFUKEgZnfH+jkCOhwJ8P4fj4ePB76Pd+Z8znfM5/Dh3O+54zBb0upA/FaR0Za6L3jQnOHIdKiKY9E3FM21tLcIYgIYGzuAEREREREpPGowBcRERER8SIq8EVEREREvIgKfBERERERL6ICX0RERETEi6j... | [
"each bottle . . . the surroundings",
"the surroundings . . . each bottle"
] | null | 1 |
math | pre-k | cones | true | false | Which shape is a cone? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAZK0lEQVR4nO2dW3Cb5ZmAH1tnS7EkO5FE7Nhu0ljsbLDbTTYxFyEc2nQGSHYvyF4USq843HRnYMrdTpl2etdO6SUUbraBXizcrFNgOJMws3FSA5WTnUV2k1qOCJISWZJlnSV7L379P5KtJDofv2eGMTr+X6zHr97v/U59m5ubm740/C0O0RxkNxEI2g51H+xQwf4BsGuhz5fa3Ly41upmCQTlc2QQ1Etx6cZdWnAaJasFgnYjmgN3DL5Jw2Ic+tey0gNCWkE7s0M... | 1 |
math | precalculus | outliers-in-scatter-plots | true | false | The three scatter plots below show the same data set. Choose the scatter plot in which the outlier is highlighted. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUYAAAFGCAYAAAAW1zbwAAAr6klEQVR4nO3df1CTd4I/8Hd+B0yCBKGDVsnZoIuW0gUF05JZ3VtT586bzu7WFrtt9wrdbo9W616n2/bGjpzXcyfVdba2etbZXaZzd2y19sfu1+nUdu5Udi1CKqeroBXRVCuMUIKaCOFJ4Pn+QYnkIfySJwmB96tTy/PJYz6fiLz7eZ7P5/l8FIfaAuLnHUEAgAIiAAWIiKYXESIUgAgUz1JDXdMRHBSFDEUimo4U/emnAI52BKEe6CN+x6iEPV2DWVqGIxFNL98... | 2 |
math | kindergarten | triangles | true | false | Which shape is a triangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACQCAYAAADwZHJxAAACb0lEQVR4nO3UPW5VVxiG0e9e/xQEJ1IKogyAZAh0KRhSBsKQIiUlM+Cnj1Mh+YIlHF+dFEdIQIvzHGHWqvbWbt7i0d4ty7Jc3sy8vp45HGdul4EvdrqbuTiZefxg5qfzmd3l+2V5frX1LO6zJ9/PnL66Xi8/n8/8+t1aIXypw3HmxbuZv29mXl7P7K9u1weRcZcuTtamZmbeHmf2x48e4C59aOrfZWa/7RS+FUIjITQSQiMhNBJCIyE0EqdbD/jcb3/8Pm9uDlv... | 1 |
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? | "iVBORw0KGgoAAAANSUhEUgAAASYAAADECAYAAAAyP4znAABimElEQVR4nO29eZhcZZ33/blPVXX1vqaTTndCh9AhCwGEwBAINhJHElkGE3zYRhTnmZFlfC8fQV82ebye64IEHkfgGmcQnVd5FBUdYEJ4nCFR2UWWJCRIIEESQpbe0ntXda3n3Pf7x3226nSS3rvSXV8vOX1qOXWqUvU9v/u3fL9CKaXIIYcccsgiGJN9AjnkkEMOA5EjphxyyCHrkCOmHHLIIeuQI6Yccsgh6xCc7BPIIYfJQn9nmq4DCWI9Jv3daWLdJqmYRUFZiML... | [
"certain",
"probable",
"impossible",
"unlikely"
] | null | 1 |
math | pre-k | count-pennies | false | true | How much money is there? | "iVBORw0KGgoAAAANSUhEUgAAATsAAAB+CAYAAABbPrasAABXxklEQVR4nO39Z5Rd532niT4775NDncoRlYBCziAAglmZEmVJ7SC72zN2u93u7nG3e41nOs3tuZ65ve66M90znXtsy9mWLMukJJKimBOISORUBaBQQOV4Tp2883s/HJB2z1A2GIAqqM5PH0iBa6H2c55T/733G/6vJIQQ1FNPPfX8mEde6Quop5566rkXqRe7euqpZ02kXuzqqaeeNZF6saunnnrWRNSVvoCPG9eqUi6XsW2LarmM59hUsnM4vkBVVYx4inA4QjQWRzd... | [
"8¢",
"7¢",
"9¢"
] | null | 2 |
math | pre-k | represent-numbers-with-pictures-up-to-5 | true | false | Which shows 3? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAnzklEQVR4nO3daWwd13338e+Zufu9XC4pbiKphYtIS6IWS5Ysy2ssy1aC1E2DNm7TIE8SoECdOiiKIkjSFy1at3lTpAueFEgAJ6mdyHbSOEmfJI53W/Kq3VpJSaRkiftyF959m/O8uKQoWrK26HJE+f8BBJucuTNzD+c3c+bMmTlKa62Hs3AyCbEC5DVCiBJxKCgzod0HdS5Qwxmtd03avVlCfPxsLAfHiWTxhwYXdPiL6RRClEasAD0JGMrC8SQYk/niBAmfEKV... | 0 |
math | grade-1 | compare-vertices-edges-and-faces | true | false |
Which figure has more vertices? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAIAAAACACAYAAADDPmHLAAAQ+0lEQVR4nO2de1hU1d7HPwOIhshQ3vIKCoiKOuKlMrUhNc1KsTpqljjgHUsRyyzrCFjZa14QT2qkBngsiUcEDU8XjzJQvh58XnRMCZTCsQfBwMQYJQYZ9vvHNKTJOXVs9uy57M/z8DhcnPWdWZ/Za+3fWntGIQiCcKkBvq0DgwkaBWScGA8FtHOHIC/o7AmKS0ZBOF4rdSwZKbjfBzxK68zfdPGE4LZmO2ScF4MJzl6HygY4VwdutY3mX8id7xq0czf3NcA1E7i... | 0 |
math | calculus | determine-continuity-using-graphs | false | true | Is f(x) continuous at x= – 6? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAACCrElEQVR4nO3deXxU5b0/8M+ZNftCEpIQSNiRYMIaFQRFweWKtYJ6sb2tS62trVa72fa21laLXNuqbd3a2tqqbX+3V+pWwYAoKBiUQIRAwhYCZCXLJJNk1rPMOb8/xkQiWwLnYWaSz/v18uUrIeebb86ZOfOZZ57zHMkwDANERERERGQKS6QbICIiIiIaShiwiYiIiIhMxIBNRERERGQiBmwi6mfDhg0YO3YslixZAgD43Oc+h9dee+2EP6uqKi666CJ89NFH57JFIiK... | [
"no",
"yes"
] | null | 1 |
math | grade-5 | classify-triangles | false | true | Is this triangle equilateral? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADKCAYAAACfUje8AAAk/0lEQVR4nO3dfVzUZb7/8ffMAHIjOEKokKKhwsEbFA0V2/rZKNExo9DFirWNyggr2t3T2Uqr02a3u/1+e/axLZ7aE7WP1XMyEQvUPeQmVuqqWLEpm7lJCW5wqKYII6aRYX5/tOJaligz852b1/OvfPCd7/We/9577Weuy+R2u90CAAAA4BFmowMAAAAAwSSkC3ZnZ6dSU1O1YMECORwOo+MAAAAgCIR0wd64caPef/99bd68WVdddZXRcQAAABAEQrpgv/DCC33/XVN... | [
"no",
"yes"
] | null | 1 |
math | grade-3 | fractions-of-a-group-denominators-2-3-4-6-8 | false | true | What fraction of the shapes are circles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACUCAYAAACp1l47AAAVJklEQVR4nO3dy28b1/nG8YceXoYUL6KVSJEjyu7C0iYGHBQGasHZNAG6cGKgdYAC/W3irYOu2j+j2RSot/Gm2TkLJ1oUaLKp4QbwIi7cjWigsMX4QiWKRJEmZ0iO5regKeciWaJEznBmvp+tJOo9g/dgHpw5PBNzXdcVAAAAgKE45ncBAAAAQJgQsAEAAIAhImADAAAAQxT3u4C+1XJbkmQ3tyVJqUwv+88vJH2rCQg75h0AAMPnecCuVjq6f9fS6oqtaqUju3Ww71i... | [
"3/4",
"1/3",
"4/6",
"4/8"
] | null | 3 |
math | grade-1 | count-sides-and-corners | true | false | Which shape has 4 sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAACd0lEQVR4nO3UO25UWRhG0b/Kj8BAk4EICLt7CMzLA2FgzIBHRoBJbWzJxqXbwRVSx+3SLnWxVnSvjo70BVtnsyzLcvUw8+Vu5mY387gMPNnpZubFycyfFzOvz2c2V/fL8uH60LM4Zu/+mDn9fLf+vDmf+fvZWiE81c1u5uPtzLeHmU93M9vrx/VAZOzTi5O1qZmZH7uZ7e5fB7BPv5r6ucxsDzuF34XQSAiNhNBICI2E0EgIjYTQSAiNhNBInD7l8vv3X/e1g/+... | 0 |
math | algebra-1 | identify-linear-quadratic-and-exponential-functions-from-graphs | false | true | What type of function does this graph show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAETCAYAAAAMFHHvAAAYw0lEQVR4nO3db2xU55k34HvAYIMX4iYvBtqmYDUNfgMJRoQA2t00dNWqVpm2abfLqtovXSlSumo+pdqtVtqkUpoqK/VbaZu2UpJW3VWTVlWkOErUaJdVVa0NYRRHhdTZvJVNqjZgWjCw/sMfc94P7gweTMBjn/GZGV+XFMVzfM/hFiDOj4dnnjuXJEkSAABAKpZk3QAAADQSARsAAFIkYAMAQIoEbAAASJGAzTVNTEzExMRE1m0AANQdAZtr6u/vj/7+/qzbAACoOwI... | [
"exponential",
"quadratic",
"linear"
] | null | 0 |
math | kindergarten | spheres | true | false | Which shape is a sphere? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAWTUlEQVR4nO2dTXAbx5XH//ONjwFIAqREyinCVWtqbUm7VZZcG/sg+aKtWHFyWPuQS5zLHuTr5hzfkrOv0WFP9iUHabeSiuRUJQdTh01SFlW1pY9E8lYZrDIJmQAoAIMB5qNn9tDoIUBCIiXOYGaA/l0kQSTQmP7Pm9evX78n+L7v12zgaxPoEMD1weEkDlkAChKwlgNOqoBQs3z/r+24h8XhHJ3vFwH5sUn/saIC/5inquZwkkaHAH/vAts28MgExLZL/4OLlpN... | 0 |
math | grade-5 | scalene-isosceles-and-equilateral-triangles | false | true | Is this triangle equilateral? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADOCAYAAAAEw3WqAAAoHElEQVR4nO3de1xUBd7H8S+DgIOXiVJazQuZmXdRQHS8o6kQaqZCqdnqlvVsrmVrVl4yuyt2tctmq1ab2gze2AztCSt2izRStqIVEw1FsUgSCQm5zDx/9DiL2w2V4cwMn/d/nSPnfOnVH9+Ov3N+fk6n0ykAAAAAdcJkdAAAAADAl1Cw0SB89NFHCgsL0/333290FAAA4OMo2PB5a9askdVq1aFDh7Rnzx6j4wAAAB9HwYbPqq6u1p133qkZM2a4jvXq1cvARAAAoCF... | [
"no",
"yes"
] | null | 0 |
science | grade-2 | natural-resources | true | false | Which of these pictures shows a natural resource? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAV4AAAElCAYAAACszooYAAEAAElEQVR4nOz917MkSXbmCf6UGHF2WbBkVUCBNGR6ZWV3Z0Tmaf/+2YcVGZGdkW70dDWAQiWLyIi4zJkRJftw1MzN/TqLG5EFoKQ0JdL9upmpqampHv3Od4iq/+9DjP8wgZnhL+Uv5S/lL+Uv5QuWuYf/awk/N3Bt4f99Jb/rvwjdv5S/lL+Uv5Rfp8wM/MNEvi/85nf9F6H7l/KX8pfyl/LrlU7GtnHzm9134v/+kyPuO/AFSozHa46Ro/c+eT0ACpR69v1DV8e... | 0 |
math | grade-4 | decompose-fractions-into-unit-fractions-using-models | false | true | How do you write 11/12 as a sum of unit fractions? Use the fraction strips to help. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABsCAYAAABQF8VPAAAJTElEQVR4nO3dXWwV5B0G8H+htJSOMtYaiV+LF4YwTXXLhGnozYwkLHIxZ8wWhS3qtkTlwoi66IVRtmwu21yMWTRjy0wcIykx+3aGoITEuA0YhKkbBKvjQxGrfLSUltJzdtGBBDB27ct5S9/f78Zi7Xn+z0375HB6rKsOdldjz5MRh/4WcWx/AHAOqJ8Z0TIv4sK7I+pbc18DwEnqql0PVePA2tx3ADAan7wu4tLv5r4CgJPUR8+G4Y8uuiOi6dK81wAwMkfejNi9IqJ... | [
"1/12+1/12+1/12+1/12+1/12+1/12+1/12+1/12+1/12+1/12+1/12",
"1/12+1/12+1/12+1/12+1/12+1/12+1/12+1/12+1/12+1/12+1/12+1/12",
"1/11+1/11+1/11+1/11+1/11+1/11+1/11+1/11+1/11+1/11+1/11",
"1/12+1/12+1/12+1/12+1/12+1/12+1/12+1/12+1/12+1/12"
] | null | 0 |
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 western rattlesnake is an example of a reptile. Select the reptile below. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOy9d5wUVbr//z6nqsPkgQnAkLNITpIERVQkLBcVTLiy6qq/5eqqXPNdd9fF1d1FxZwwK67KVXTR5SsoJkQkigRJEiQPMDA5dHed3x+nqrq6Z4BBx9W7tz6vV0N3V9U5p05V13ye53ye5xFKKRWNRrEsCx8+fPjw4cOHDx8+fPzvhJQS0zQRkUhE+eTehw8fPnz48OHDh4///ZBSIn1y78OHDx8+fPjw4cPHvwcsy0L+1IPw4cOHDx8+fPjw4cNHw8En+D5... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6cAAADMCAYAAACPx9V0AAEAAElEQVR4nOy9ebwdRZ33/66qPvfcJfdmD1lIgCSENRACyA4isooMCgiKgqDATx5UYFCUZ9RxcECH1QWRVVBRgRF0wIcX68iOgSSGfU2AEALZSG62e+85XfX7o5au7nOS3GBYxukPr8M9p5fqqurqTn3q812EMcbU63W01pQoUaJEiRIlSpQoUeJ/JqSUJEnCE92wRQd0qg+6RiVKNMfyFF5YCfP7YHACew6y22VJTEuUKFGiRIkSJUqU+J8PrTX1er0kpiU+9Oh... | 1 |
math | grade-4 | what-decimal-number-is-illustrated | false | true | What decimal number is illustrated? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFICAYAAABqXYnbAAALLklEQVR4nO3aUa6iUBaG0UvHsTAiB2JiHIUhcSCOyMnsfvCV0hz4oY/NWq+cTSDZlXzXYqiq+gMAACL+879+AAAA+H8isAEAIEhgAwBAkMAGAIAggQ0AAEGnTxeHadzrOTiYur6aZ+wjW7GP9MQ+0pMl+8iHX7D9Y6Un9pGe2Ed6Yh+hPx9/wf77+/u7nG+Lbvx43s2anZ1b45fe1Wz/s/bRbE+z9tFsT7Nr9/HofIMNAABBAhsAAIIENgAABAlsAAAIEtgAABAksAE... | [
"5.89",
"5.90",
"5.97",
"5.79"
] | null | 3 |
math | grade-3 | match-clocks-and-times | false | true | What time does the clock show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACwCAYAAAA16xkbAAAPbklEQVR4nO3dX2zd5XkH8Oc4TpPgQyijLV6hqK0PUlcKdtVt6maH7qKbfTF1E1BROo2gCdCabBLJNKcXhanhZrHUhIsSqeKiTbpAV0GmbaoUdwpokJRWTGuisVLU4/Q/tbtSQPmdJM4fexdpHPsk8fn3Hh+f48/nynbO+/s9R/HF9zx+3veXm52dnQ0AACCJrlYXAAAAnUTABgCAhARsAABISMAGAICEBGwAAEhIwAYAgIS6W11AvU6dOhX79++Pw4cPx6uvvhqvvPJ... | [
"three twenty",
"one twenty",
"eight twenty-one"
] | null | 2 |
science | grade-5 | animal-adaptations-feet-and-limbs | true | true | American badgers are found in parts of North America. They live in burrows and eat other animals that also live in burrows. The feet of the American badger are adapted for digging. Which animal's feet are also adapted for digging? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOz9d5wlVZ34/7+q6uacum/nnKcnZyYwAwwZRJIBVNQVfvJ1FVhdcP2YXXXF1RUE1wwiKKCiRIlDmhx7cuec++Z8K/3+aKaXIUkYZXXv8/GYx3TfW111Kpyqd516n1OCruu6oihomkZBQUFBQUFBQUFBwd8nURQxGAwIsizrheC+oKCgoKCgoKCg4O+fKIqIheC+oKCgoKCgoKCg4B+DpmmI73YhCgoKCgoKCgoKCgpOnkKAX1BQUFBQUFBQUPAPpBDgFxQ... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOy9d7QkV3Xv/zmnYufum/OEO1kjjTQa5SwQQQhhg8AmmGCe4ZnFw4DBwPOyn3nG2A9wIvmHwQJZZGz0TLSQhFCOo1GYkSanOzenzl3xnN8fdeeiUULAGH72rz9r3bX6dldXnapzTnXts797b6G11lEUoZSiTZs2bdq0adOmTZs2/zmRUmKaJkKIX3dT2rT5L4lsG85t2rRp06ZNmzZt2vznRylFFEW/7ma0afNfFtk2nNu0adOmTZs2bdq0+a9B+9m... | 0 |
science | grade-3 | identify-mammals-birds-fish-reptiles-and-amphibians | true | true | Fish live underwater. They have fins, not limbs. A piranha is an example of a fish. Select the fish below. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOy9ebglZXW3fT9DDXs8cw+n527obuahQRAERVHAxIgICjEOGIeIOPFiRI0aJJeaYCQJQeMYEI0Y8oqg+Xwd44CKQKPIoEzddNNz9xn3WFXP8P1R+xxpJhtoRUnd13WuPmd37aqnalfVXs+q3/ot4b33xhiccxQUFBQUFBQUFBQU/HEipURrjciyzBfBfUFBQUFBQUFBQcEfP1JKZBHcFxQUFBQUFBQUFDw9cM4hn+pBFBQUFBQUFBQUFBTsPYoAv6CgoKC... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6cAAADMCAYAAACPx9V0AAEAAElEQVR4nOy9d5wkV3n1/72hqjr35N2dnc3aoAwKCJCQkQAjMDYgJBDGGIQJL1jEV2SDLeQfYIPBJppgGxDYYPySbUw0wgKBpJUQyittzpNnOlfVvff3x63u3VVcCRGM+3w+rZ3p6a54q1TnPuc5RzjnXJqmWGvpo48++uijjz766KOPPv5nQkqJ1prrFmFjEcrq171FffRx76gZuKMB+2MY1HDWgH9f9olpH3300UcfffTRRx99/M+HtZY0TfvEtI/feJSVn0A... | 1 |
math | pre-k | one-less-with-pictures-up-to-10 | true | true | Count the flowers in this group. Which group has one less than the group you counted? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABmCAYAAADxjOYpAAApNUlEQVR4nO3deZyd1X3n+c/zPHeru9dya1+kWrTvQmhBgEBAzBLMEhO3E5TY6SQ26e5Jd7B7eqYTOz3tmYk77XimM0nc6WkbPE7Hie2A2wFjMMZmEUJCoB1VSbWvt5a7L8+993nO/FGK3AQMKlGlS936vf9B0uueuuenq9+rvpw6zzmaUkohhBBCCCGEWBR6uScghBBCCCFEJZGALYQQQgghxCKSgC2EEEIIIcQikoAthBBCCCHEIpKALYQQQgghxCKSgC2EEEIIIcQ... | null | [
"iVBORw0KGgoAAAANSUhEUgAABIYAAAB+CAYAAABRYRpnAABQYElEQVR4nO3dd3xc533n+885Z3rDoHeARGHvRaQoWY2SbFnFkmUrVbKdrBPHTrYksnfzujdxsrvZbLKOk7ubu7GT3TiWr+PYayeusmXLkm0VihKL2EmARG8zwGB6OTNzznP/GIqSrAZSZVB+739AUTjEeTD4At/54cxzNEAhhBBCCCGEeEsopZgpwvkcpC0oS9sWQgixiDg0CBrQ74NmF2jIYEgIIYQQQoi3zIypeDZV7bMQQggh3tieEDiqfRJCCCGEEEIsJ4O... | 1 |
math | precalculus | identify-graphs-of-continuous-functions | false | true | Is the function f(x) continuous? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AAB6iElEQVR4nO3deXhU5d0+8PvMPtlDEpIQSNgDiQQBQQNEsdJKpdqCtdrWqu1bW61ra63WtvatxaVVa+3r1lXta3/tK3WrYlQsSCARgQABwhYCZAGyT5LJLGf//RGTEllM4DmZSXJ/rqvX1UzO3Pk6zDzne555zjmSaZomiIiIiIhICFukCyAiIiIiGk7YYBMRERERCcQGm4iIiIhIIDbYRCPImjVrMH78eCxdujTSpRAREQ1bEk9yJBo5Fi9ejG984xu4/vrrI10KERH... | [
"yes",
"no"
] | null | 0 |
math | grade-1 | ordinal-numbers | false | true | The first picture is a bucket. Which picture is seventh? first | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAf9ElEQVR4nO3df3BU5b0/8Pc5uxuSwCb8kh9JqkIJCREBxSaxUzFXCIMtKIZ4LdiORqvYma+AU8B7/YrClXu/VWm/JHZGgmi4nSvYmtBesdKbQBtrZ27CwCUi3w0Q8GLdJFhpriQQMLt7zvePk93sJvvj7Oac/XHO+zXjaHbPnufJ42c/58lznvM8gizLMoiIiIiISBNioitARERERGQk7GATEREREWlItw72Vy4ZM/6jF7f9oQ9fuTgLhYiIiIjMIaYO9m+7Xdh2+nr... | [
"bucket",
"crab",
"boat"
] | null | 1 |
math | algebra-1 | domain-and-range-of-absolute-value-functions-graphs | false | true | What are the domain and range of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABssUlEQVR4nO3da3RU550m+mfXVXeVkEASAknGGGxhCSMb22CIcePY7jhxAukMTp9c3MtJOpk4TmfOSZ90TpLpzvi4c7o76YnbyWTSycT2rKyViadtdwwRBAcMRMTIyCCQwCAL0AXQpaSqUl33/XyQS6hAgippv6qLnt8XW0Xtf716d9Wup7be/S/JNE0TRERERERkCVu6B0BERERElEsYsImIiIiILMSATURERERkIQZsIkpQU1ODw4cPT/58/vx5LF68GL29vWkcFRE... | [
"domain: all real numbers, range: $\\{y \\mid y \\geq-8\\}$",
"domain: $\\{x \\mid x<-8\\}$, range: $\\{y \\mid y \\geq-8\\}$",
"domain: all real numbers, range: all real numbers",
"domain: $\\{x \\mid x<-8\\}$, range: all real numbers"
] | null | 0 |
math | grade-2 | read-a-calendar-ii | false | true | What date is 7 days before February 8? | "iVBORw0KGgoAAAANSUhEUgAAAssAAAF2CAYAAACYtNXtAABW8ElEQVR4nO3deVxU9f7H8RcD4i6y45ooKlrkgjsSZZq7lpml1/Kmlpa2XEvzUpr9yixtNSvbTc1cM1AzXLqgmJqK4r6iouGukIhszvz+MCYJjg4KDEPv5+PBQ5lzZuYzH86cec93vueMk8VisUQejuXnoxs4lnoaEREREbl1tSr50OW2NvTyb2/vUuQWOEUkrLUkXPydfzXqhGuZMliw2LsmEREREYfmhBOZWVl8t3sl/pWr07tuqL1Lkptk+vnoBgY0vo8yZVwUlEV... | [
"February 1",
"February 2"
] | null | 0 |
math | pre-k | subtraction-sentences-up-to-5-which-model-matches | true | false |
Which picture shows 4 − 1 = 3? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAABKCAYAAACiqlhpAAAKi0lEQVR4nO2dW2wU1x2Hv71513d8wRgMcSB1XOwm5mpCJBSHplHbpK0CCMmiCVQRL60UqUVtUypV4iVVKiXkpSpPLU1EI7VxAlSUJpUap6WBmMh2MIHgxdg4TmxsfN2b13uZPiy79sLexju7s1b+35Nnz5lzzk/jb8/cdsagKIoyMgfX3eAIgF9BEIQMYTZAsQnqCmBFHhhGvIrSMaP3sAThq8e2EjDb3aGFlXlQXxiyUxCEzOAIwDUXDM9BrxuMM/5QgcgnCJm... | 0 |
math | grade-3 | find-the-next-shape-in-a-pattern | true | true | What shape comes next? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADhCAYAAAC9ZMGZAAAT6klEQVR4nO3dW4xd51UH8LX3ucyZiz2Ok9h1k5KmphAgJQ/pFaWqegHxQPuAQAKVl9Kq4gFapFIJ9aKKJn2DB/qAAFGQKqFSVdxKKRWgVIXe2wdKm7bQponSxPUFX2fGM3Mue/MwsceO7RnP+Jy99/nm95OsPCR7f2t9yznzn2/2OZOVZVkGAACQhLzuAgAAgPER8AEAICECPgAAJETABwCAhAj4AACQEAEfAAASIuADAEBCBHwAAEiIgA8AAAkR8AEAICECPgAAJET... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAz4AAADhCAYAAAAJS2C/AAAZSElEQVR4nO3dW4yk513n8d/zvm+9dejqg+fQ7fHY2M5gMJBgrezEDnIUkYQVF4SLCCRQuAmOIi4gIIVoV4m9EbEj7QV7sblAu2gDUiQUrIhTNmSjJTIKxHFOFxgySYA4HpmZznQP04fprq6q9/RwUZ6Znpnu6tN7qqe/H2lkJeN6nv//+Y976lfvW1XGWmsFAAAAwAnGmKpLqCWv6gIAAAAAoGgEHwAAAADOI/gAAAAAcB7BBwAAAIDzCD4AAAAAnEfwAQAAAOA... | 0 |
science | grade-6 | identify-elementary-substances-and-compounds-using-models | true | true | Look at the models of molecules below. Select the elementary substance. | "iVBORw0KGgoAAAANSUhEUgAAAQsAAAAiCAYAAABIgfwYAAAJLklEQVR4nO2cX0xTWR7HvxjutaUirdDJqpeGImrBgoqOEA2+yOCfVeFthgcTd0AHya4m6kw0M4LojgJjguOsTtaAm5io7JMgRoXRl1UScRMWW1dQIpiCjmuBUli09BrYB6ZkkNJ77r2nUGfPJ7kP9J7zu98m3G9/53f+hI2Ojo6CwWAwJJg10wIYDMaHATMLBoNBBDMLBoNBBDMLBoNBBDMLBoNBBDMLBoNBRLiazh6PB6IoYnh4GKLoBQBwHI/Zs2eD4zhoNBoqIqe... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAboAAADMCAYAAAAF+2btAAAboUlEQVR4nO3dfXRU5b0v8O+zJ/OW94QEUEMkEGxAAqIgcKnoqhClRyurdh3lrlLrASmyrqW12gUe60vFI1p72quXenWhZXFFPffUCui9FqWnvYfa8ibyZgUtL41BkATySjIze+/nuX/smcnkhWQm2ZDkme9nrWnInj3P/s005ptn72c/jwCgQETUi12NCl/JAnI8A10JUfeabeDwOeBkBCjIAL6a72w3BrQqIhoyGHI02OV4nJ9TAGix27cz6IgoKQw5GgpiP6d... | 0 |
math | grade-7 | rotational-symmetry-amount-of-rotation | false | true | This image has rotational symmetry. What is the smallest fraction of a full turn you need to rotate the image for it to look the same? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAAdD0lEQVR4nO2deZxdVZXvv+uce2tOqkhCIIgkQWUwkoEaAhhSFRD9ICq2yJSAw0NUbKdWP4K+tp36+Z6+bm1bWhsbnIA8DPjQVrCRoarCoKmBhAiKA0rEF8hAhqq6t4Z7z17vj5t0Q8xQw97nnHtrfz+f/JNP1Vqrzr2/s6e11wKPx+PxeDwej8fj8Xg8Ho/H4/F4PB6Px+PxeDwej8fj8Xg8Ho/H4/F4PB6Px+PxeDyVjyQdQCWj9yyup6bqUlQuQzkVqLFkegThlyj... | [
"1\n9\n of a full turn",
"1\n8\n of a full turn",
"1\n10\n of a full turn",
"1\n6\n of a full turn"
] | null | 0 |
math | grade-2 | read-a-calendar-ii | false | true | What date is 3 days after November 4? | "iVBORw0KGgoAAAANSUhEUgAAAssAAAF2CAYAAACYtNXtAABdXUlEQVR4nO3deVhU993+8TcDIriBrO4KbrjgGuOChsR9iSYxxqea9LFVk5jt1z62Gkubramx0TRNTJvYNiZGjdGoUXELbgUVl7jiAq6IioiiiIrszvz+QEYIHDNEYBi8X9flpc6Z5TMfzhzu+Z7vOcfJYrFY1l69xKbUFBKzsxARERGR+9eouhv9vXwZ5u1v71LkPjituZJsOZOdydP+DajmbMJi74pEREREHJwTkHvbzPLkCwRUr8EwHwVmR2XalJrCKP8GuCgoi4i... | [
"November 7",
"November 6"
] | null | 0 |
math | grade-5 | multiplication-input-output-tables-find-the-rule | false | true | What is the rule for this input/output table? | "iVBORw0KGgoAAAANSUhEUgAAAFgAAAB/CAYAAABrPAW6AAAKVElEQVR4nO2dbVBU1xmAn0WFACGuhhBtjIII0Rq0xqJRxDg1SJEamwQTPvxoxSidIjGKglW0WJ0ao25TCUajxtiIYFInLFQBWxRiE2yCihpBY5TyEQiQ8iUBWeH2B2UnVGYCeg6CnGeGH5y7933ffebsuXd3zzmrY4eHRg8gaepGZmWuvddldAot9BQW97qI+x0lWDJKsGSUYMkowZJRgiWjBEtGCZaMEiwZJVgydyX4kPfvuRBwQFQtwrDrZ4NhShhnXt5HzZI0PvX... | [
"× 10",
"× 2",
"× 5",
"× 4"
] | null | 1 |
math | grade-2 | match-addition-sentences-and-models-sums-to-10 | true | false | Which shows 3+4=7? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARIAAABKCAYAAAB3ndsNAAAMd0lEQVR4nO2dS4wcx3mAv6p+zGtf5FLykrQoQRQpU4piKUFESbZvgh0/AcOwYhiGkFOAwAkMIUhuueQQA/bBcRIg5+SQOA6MIJaj5OzEkULYgAFbFriiaZiP5fKx5O7Oa6enu8qH3iF3yOXs9Mx0T0/j/4DFzm53V/c3qPqrq7q6Sllr7XoAF1pQjyC0CIIgDMRVMO/AqSp8wAe13rH23Pa0L0sQhFnl7AK477fiP4768HQtjjKCIAiDqEdwvgnXAlhtgd4O4w0... | 1 |
math | grade-4 | identify-equivalent-fractions-using-number-lines | false | true | Is 1/2 equivalent to 4/5 ? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABwCAYAAAAkAwevAAAS40lEQVR4nO3df0zUd57H8dcA8mv4WcCFYYnUprbKGXfVBWYras6ma2tsXH9Utm2oZ8x2m7rduttNavrHdf+4rmbj0uimUXdj3cX2ru111Vy43uZ0C3Q5EKE/rMaaLj3UMiLgAYoz4gzM/YGwsmql8oXPfL88HwmJ850xeSUfkRfv+Xw/4wqHw2E5REVFhXw+n5577jklJCSYjgMAkqTt27fL5XLpxz/+sekoACBJ8vv92rFjh775zW/qiSeeMB3HcaK+7l8IBoPy+/3... | [
"yes",
"no"
] | null | 1 |
math | algebra-2 | linear-functions-over-unit-intervals | false | true | How does f(t) change over the interval from t=
–
3 to t=
–
2? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABsiklEQVR4nO39fXhT950n/L9lPdiyZFvGzxhsIAQnBhtiY4gJJGSgSRraTKHpkvY3TdPp7ky6fZrZvaZXr7bbe9s7F3f2nj7czabZbnY6TTJ39+o2v5LsBGIoCQSoSTAYMNiAMQb8AFiybEnW89HROfcfjhwMNkj4fC3Jer/+4ULWefvjc6yjj77+fs/RqaqqgoiIiIiINJGV7AKIiIiIiOYSNthERERERBpig01EREREpCE22EQ0yf79+7Fo0SJs2bIFAPDZz34Wb73... | [
"f(t) decreases by a factor of 5",
"f(t) increases by 500%",
"f(t) increases by 5",
"f(t) decreases by 5"
] | null | 3 |
math | grade-6 | similar-and-congruent-figures | false | true | How are these figures related? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAB4CAYAAADIUIXCAAAbmElEQVR4nO3daXyU5b3/8U8IWclCiBFiJGxJDEEhHA8EtYbTSmhtkWNl0apBNluwlU2RNYBs6iGoRQSsUKBoXYKvqnD6skT/tbEtBrVsTcgGYjAnYBrCZJmQSSbzfxCDWJeWcM9ck+T7fjJmwuu+voNPvvPjvq/Lx+VyuRAREREREUt0MR1ARERERKQjUcEWEREREbGQCraIiIiIiIVUsEVERERELKSCLSIiIiJiIRVsERERERELqWCLiIiIiFhIBVtERERExEIq2CI... | [
"similar but not congruent",
"congruent",
"neither similar nor congruent"
] | null | 1 |
math | grade-4 | properties-of-three-dimensional-figures | true | false | Molly saw a 3-dimensional figure. It had a round base. Which figure could Molly have seen? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHgAAABSCAYAAACfUxCCAAARbElEQVR4nO2deZRU9ZXHP7/tvVdV3U2z2IRmb0RkkUUgwCQoHeMCAtqQ6IhB24VBloBRYcAZHY5xzDExniTHxGjGkQiKiRgZl3CYg6CAgpoIyZAYiAsQ9qIBm96qurve/PF7Vd2tSY70alXqy3l0LV2v7u99+t7fvff362rh+75/NA7vV8GZeqjzySrNpQXkKhgYBnE05vtvl3e0SVm1lfSfq+yNHg4MiljyWaW3ztTDnko4EgdZXmcfzMLNHOUqyxNA1jd6MKv... | 0 |
math | grade-3 | read-a-thermometer | false | true | What is the temperature? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAXIUlEQVR4nO3dT4gcV54n8F+qdZJ9CV88027GkDUCncYSkW7GPviUKbDQaUQluNfnKIvewwq8VK29BoNXvZlMgw7GyErm6G2DCjd7MDKo4uSLm3EFlmcvArUTPLRnx6eAxdbC0t25BylDWf+kUlaoMqr5fKCg6sWLiF/dvjx+70VrMplMAgAAqMXxuh50+/btuHHjRnz++edx69at+MMf/lBd+9nPfhanT5+OV155Jc6dOxenTp2q67UAANAorTpWsD/88MMYjUbx1Vd... | [
"20°C",
"10°C",
"25°C",
"30°C"
] | null | 3 |
math | grade-8 | apply-multiplication-and-division-rules | false | true | The number line shows an unknown number, p. Is – 3p positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAGjUlEQVR4nO3dXWxT5wHG8efYsePmY1MEgaojEE1MhAiVQoJJEMtotUnbEG3D0CZuKBUSGogJabtAWqdqF4WOGy4muEBi0oS0iO3CQUJKLzcnF4sdQmYtItlChAdqQqEBOvJh+zg+u/BH45IEpto+Psn/dxHZ5/jikY6TPH79vu8xLMuyBDhYV1eXDMPQ4cOH7Y6CEuGaAwDKWYXdAYCv6/79+3ZHQIlxzQEA5eylC7ZpmhocHFQoFNK6desYOQJs0Dtq6i/9cU0+Ten... | [
"negative",
"positive"
] | null | 0 |
math | grade-3 | is-it-a-polygon | false | true | Is this a polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD/CAYAAADL5aGiAAAXSUlEQVR4nO3dPXDV973n8Y+eBYKFVBIVeAbFSmVBY1xAQmegMYVN3MWm2Z0bx9lq17HLkHi72PdmZhscb3WNszumMdCZC4VJI5TKcuQZy5WOq6uMhDh6PFscnYPEoySOdJ5er5lMbOJIv0xg5n1++v6//45SqVQKAABQE531PgAAALQSgQ0AADUksAEAoIYENgAA1JDABgCAGhLYAABQQwIbAABqSGADAEANddf7AGze9MxqCjOrmSuWMllYSZL8o7CSuWLpkX9ms4a... | [
"yes",
"no"
] | null | 1 |
math | grade-5 | rotational-symmetry-amount-of-rotation | false | true | This image has rotational symmetry. What is the smallest fraction of a full turn you need to rotate the image for it to look the same? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAABChElEQVR4nO2deZxbVdn4v89NMp2uk2S6TSZTWiht6bQFocouIIi8slMWAQuoiMoiq+irovBTXFgFRBQFlVX2XV9kkR2VsrZTum8zyUyXSTLdZ5J7n98fN9OWkmRyb25mppDv51NKJznnnknuc895dqhQoUKFChUqVKhQoUKFChUqVKhQoUKFChUqVKhQoUKFChUqVKhQoUKFChUqVKhQoUKFChUqVKiwIyF9vYBPDWPHBgOB9FjLl4mC1IoltUCtilWLIoZIaPshlrI... | [
"1\n8\n of a full turn",
"1\n10\n of a full turn",
"1\n9\n of a full turn",
"1\n6\n of a full turn"
] | null | 2 |
math | grade-8 | identify-linear-and-nonlinear-functions-tables | false | true | The table shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAFQAAABeCAYAAAC98DOnAAAIxElEQVR4nO2cf0iTXR/GL2f+KitTKkaWW5nONEei9lNFs6GviFm8GkIRDBaaWCSaFWJUFFOhUJgT0xKjpB9SqZlCgligSRmawaw0SVpomc7NTN3O+8eDoz1Zuttz9zy9nA/sj33v47m+XJ77cLP74uBmbT35E/hT+hSAQRVmKGWYoZRhhlKGGUoZZihlmKGUoWZoV1cXkpKSIJFIIJVKcfz4cYyOjtKanhNGoxElJSWIiIiARCJBREQE1Go1jEajxbgrV64gLCwM3t7... | [
"linear",
"nonlinear"
] | null | 1 |
math | pre-k | name-the-shape | false | true | What shape is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAFhUlEQVR4nO3YMQ6CABBFQTA2VF6Qm3FJb7D2Vpo8QkJm6i1++bLrzMwCAAAkHlcPAACAOxHYAAAQEtgAABAS2AAAEBLYAAAQEtgAABAS2AAAEBLYAAAQEtgAABB6/np4HO8TZ/CvbVuXfX9dPQMAgC8+2AAAEBLYAAAQEtgAABAS2AAAEBLYAAAQEtgAABAS2AAAEBLYAAAQEtgAABAS2AAAEBLYAAAQEtgAABAS2AAAEBLYAAAQEtgAABAS2AAAEBLYAAAQEtgAABA... | [
"rectangle",
"circle",
"triangle"
] | null | 0 |
math | grade-2 | equivalent-amounts-of-money-up-to-1-dollar | true | true | Look at these coins:Which group shows the same amount? | "iVBORw0KGgoAAAANSUhEUgAAAZYAAABNCAYAAACFdkLOAABk9klEQVR4nO39Z4Cd13ndi//eenqf3ntD75Vgr2JRtSSqWXEk2Y5iWbp2cuXIdmL72kn+SVwS31iyLJGSVdnETrEDINF7nz6YPmdmTm9v/384Q8h2JBskQYLQnfWFJAYAz15rn12e/TzrERzHcVjGMpaxjGUs4wpBvNofYBnLWMYylvHLheWNZRnLWMYylnFFsbyxLGMZy1jGMq4oljeWZSxjGctYxhXF8sayjGUsYxnLuKKQr/YHcByHNxLTNE1jbnaGRCKBA+iaRjg... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAlQAAABxCAYAAAATZj2FAACMxklEQVR4nOz9dZyd53nnj78fPMzDzJoZjZglW7ZkGWMIO3bSpN1i0m4h221K23Yp6XZ/u6Xdb9MmDbRx2iRmJsm2DJLFMIJh5pnD/NDvjzMztlM7kWzJkrLn/Xr5NR4NPffnOue5r+e6LxAAiyJFihQpUuQSYVkW03noT0PCAL24yxT5GUQWwCNBqxPKVRAoOlRFihQpUuQSMp2zOBS/0ldRpMiHxxYvyFf6IooUKVKkyM8WfenCx0oVVrgKT/FFivyskTCgJwV... | 1 |
math | grade-8 | compare-linear-functions-tables-graphs-and-equations | false | true | Function A and Function B are linear functions. Which statement is true? | "iVBORw0KGgoAAAANSUhEUgAAAjcAAAGlCAYAAAAGbtd7AABVtklEQVR4nO3de3xT9f0/8FeSNk2atLS09EJbSooW0AJFxbYqVEDEG5sXLoJThE38bjLFL7rNbeLmd3Nz4sBN0J86b+imVhSFKeqKOLyUigoUoUVNCy2lKQ1N2zT35Pz+YMkIvSTtSXqS9PV8PPZgTU4/5534Pp++cm6RCYIggIiIiChGyKUugIiIiCiUGG6IiIgopjDcEBERUUxhuKEh9fjjj0Mmk/X5v2uvvVbqEv2MHTsWMpkMW7ZsGfJ1z5w50/e+vP3220O+fiI... | [
"The slope of Function A is greater than the slope of Function B.",
"The slope of Function A is less than the slope of Function B."
] | null | 1 |
math | grade-1 | open-and-closed-shapes | false | true | Is this shape open or closed? | "iVBORw0KGgoAAAANSUhEUgAAAQkAAABkCAYAAACVdcVUAAAJsUlEQVR4nO3dT0zUZx7H8Xc3vSA4etA9WO14W2YS6UVKdmOnDXSTDsaEtTUlYfmTPSyWYU5aC06CCQnoUD0xgDHZrPzZxFYWS2ygJjQqNl3+dA9idoa9MS7sJjt7gKFDj+5hmBEp/vgzM78fM35eR5WZx4Mfn+f7PM/3ee3Zs2fPEBF5iV9YPQAR2d0UEiJiSCEhIoYUEiJiSCEhIoYUEiJiSCEhIoYUEiJiSCEhIoYUEiJiSCEhIoYUEiJiyJKQiEUXCU49IjIftuL... | [
"closed",
"open"
] | null | 0 |
math | kindergarten | subtraction-sentences-up-to-5-what-does-the-model-show | false | true | Which subtraction sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAAAyCAYAAAAZUZThAAAReUlEQVR4nO2deWyb932Hn5cURVEUqZMUaVOXRVGSpdqS4kSWHV9pE9tKkGWxm7RN17hem25D13To0PXI0gFBsQHtumzdUAxNCndL2tRN1jhL7CTN0VqxFbsJKR+6qFukTIm6SVEkxePdH5TJyDosyYWkYO8DCOL7u97vhy8/78vf8b4URFEUkZCQWBDZegcgIbGRkQwiIbEEkkEkJJZAMojEmmLv7FnvEOaxVExJaxiHxP9zTjz/Eo0XrdTdUcOxR46sdzjAzWOSriA... | [
"4 − 2 = 2",
"3 − 2 = 1",
"5 − 2 = 3",
"4 − 1 = 3"
] | null | 3 |
science | grade-4 | compare-properties-of-materials | true | false | Which would smell the most? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAAnAUlEQVR4nO19a5BdRdnu091rrb3nmsQkhOEahJhwjwUEchKTIgEtxK8oCxERf53CkqOgpSVHy6qjP2JZdcpSzxELT0EUvhQWIqAFyHf8Dn6fXMIloBIhQEICBBIgN3KZzOzZe63ufs+P7l6XPXsmk0nI9ML1VM2smbXX6tW7+1lv3973afb8AaL5PUCfQIUKxxQHFbBpGHgvBmYEwNLp5jyvCFlhqtAngPk95u8hlZ3nFSErTCUc/xLKzvGpyUqFCmOjImUF71C... | 1 |
science | grade-5 | identify-mammals-birds-fish-reptiles-and-amphibians | true | false | Select the amphibian. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAD8jklEQVR4nOz9d5gkx3XmC/8iIrN8dVV739M9PT3eDzDwIACCoBcpkqJIOVJamStppXu1Wkmrq1192pWutNqVViu/sitKFEVvRBIkYQnCAzMYYLw37X1Xd/nKjIjvj8jqboDgJ0r8537PowTmaZeVlZXxxolz3vOeE+LFVWt3pCGr+NfjX4//Vx5FDRfKMNOAVg/uzLvfy38F7r8e/28/sgp2pN33Jb3xe/mvwP3X4/8fjiZOA7vxO+/1Tkym3K/tphOFEFhrEEJ... | 0 |
engineer | grade-7 | identify-independent-and-dependent-variables | false | true | Hint: An independent variable is a variable whose effect you are investigating. A dependent variable is a variable that you measure. Which of the following was an independent variable in this experiment? The passage below describes an experiment. Read the passage and think about the variables that are described. Dr. He... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAFkCAYAAABLkQIEAAEAAElEQVR4nOz915NsWZbeif22ONJ16Iir86bOLNFZuqoNaPRgIAiANk9jHOOQxmeCfwYfYXjiA/8C8oE2MJJDAQxIoIvo7qrq0lWZlfLq0MK1H7335sM+7vdmATYgbYgu0AzHLCyuiHD3I/baa33r+74l/vE//seO/3T8p+M/Hf/p+P+j45/+03/6B3lfDfCb356gtUYJgXMOrSVBEGCaijzP6Xa7LJdLhHNoranrGoA4DBHCgWjQWtE0hoODA4qq4vnz56TdHvfv3+f... | [
"the number of times the plots were burned each year",
"the number of unwanted grasses"
] | null | 0 |
science | grade-6 | identify-ecosystems | true | false | Select the tropical rain forest ecosystem. This ecosystem has:
a small amount of rain
dry, thin soil
many different types of organisms This ecosystem has:
a small amount of rain or snow
dry, thin soil
long, cold winters This ecosystem has:
year-round rain and warm temperatures
soil that is poor in nutrients
many differ... | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAp8AAACtCAYAAAD2xRSHAAEAAElEQVR4nOz9ebSlaVnfjX/u4Rn3eOYaTk1d3V09QdM08yCDDInwvlFRiFGQhS6MZkWXL7CCmiU/jSsQWSYGRCUxTqAGlwbJqyRxCAoYQAahabppqrqrazx15j0+833fvz+efXYNPdEqwwv7s9ZZZ+9nfvbZu+q7r+F7iU/2nTvRgJZixowZM2bMmDFjxoyvCEMD941BDCrnZsJzxowZM2bMmDFjxleaoQHhnHNf6wuZMWPGjBkzZsyY8c2BvvLJk1/5+9eslo/... | 2 |
science | grade-8 | 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? | "iVBORw0KGgoAAAANSUhEUgAAAmwAAAGZCAYAAAA0Im0SAABzTklEQVR4nO3de1zb9b0/8FcIBBII0IZSSEvvJV2vtKC1tSq22nkp6ubxUpza/baVo3abO7Dp3KpsetRp2Xams9LuobVzVDvPnKZqj1pFO9tVQ0urrYbeCw0thZYSmkAg+fz+oPmWlFuAQMInr+fDCnzzzTfvb4A37+/n9lUJIQTCWF1dLY4cOYrm5iaoVKpgh0MEAIiKikJy8kiMGTMm2KGQxJj/KBQx/3UuMtgBBJPH40F1dTWE8ECj0QQ7HCIfdXW1SE1NRVRUVLB... | [
"neither; the samples have the same temperature",
"sample A",
"sample B"
] | null | 2 |
math | grade-8 | multiply-polynomials-using-algebra-tiles | true | false | Which area model represents the expression (2x+3)(3x+3)? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAR0AAAEACAYAAACOIqI+AAASdklEQVR4nO3daWwc9R3G8WcPO7bX8QF24zhOA3bIBY2SuBGJgLYCAgniUIVUKQgJIfUFUrmEokpEbV/2knpRRSAkWlFoUbkqQC0mFg2EAoHU64TcCXYSBx9xNjjr7Nq1vTvbF8ZO7CY+dmb/0535ft4Eb/D+fnqUfXZm7d0JZDKZTM+w9PmAdD4tpTICAMeEA9LckHRNiTSvUAr0DGUyn/a7vRYAP7i+TAofGxj9Yn6htDQy2kgA4JTzaelIUuoelo4OSMH+1Oh... | 2 |
science | grade-3 | predict-temperature-changes | true | true | Two identical blocks are heated to different temperatures. The blocks are placed so that they touch each other. Heat can flow from one block to another but cannot escape from the blocks. Later, the temperature of each block is measured again. Which pair of temperatures is possible? | "iVBORw0KGgoAAAANSUhEUgAAAQQAAACgCAYAAADq8hJGAAAXhUlEQVR4nO3dd3gc9Z3H8fds0+5Kli1ZttxkOwbjXmgGA6YYQ+ihBHIhXPLkEpLcJYTjUuBJOZJLuLtQcgkhyeVCQhKcUEMJBhtsY8c2rrhbuGJcVWyrS9t35v747o4kS5Ylq8xK+r6ex89as7Ojn/QbfWbmO7/dn2FZloVSSgEupxuglMocGghKKZsGglLKpoGglLJpICilbBoISimbBoJSyqaBoJSyaSAopWwaCEopmwaCUsqmgaCUsmkgKKVsGghKKZvH6QZ0iWg... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAiAAAAC4CAYAAADaI1cbAAAhhElEQVR4nO3deZhcVZ3/8fetrauql6STzr7KFgIhQZawKIsQkS2IILgx+sy4zs9Bf864PeoMOqIzAs7jOjP+RHEEFdBhMYGwJBJJCJAQyEpWQtZOZ+klvdRedX9/nKrudLrTqSTV996q/ryeJ89Nn7p163Sf09/+1r3fe8oCbEREANu2aUrB1hh0ZCGj6CAiJRKwoNYPp0dhTAgslICISF5T0mZ5u9u9EJFKd1EdBNzuhIh4x5aY2Y4LwbRq825FRKQUOrKwqQv... | 1 |
science | grade-6 | compare-concentrations-of-solutions | false | true | The diagram below is a model of two solutions. Each blue ball represents one particle of solute. Which solution has a higher concentration of blue particles? | "iVBORw0KGgoAAAANSUhEUgAAAbAAAAEVCAYAAACBn7B3AAB4PElEQVR4nO2dd5wdZb3/3zNz6vZNb5tkE1JIo0kJRQQFAgQUQRC5XIGLKNdyARG9YqGIikgR7xUvNkQRFRD4KRgICIL0aoAEiCGk92w/feb5/THzzDxzdjdtz9nsnn3er1dy9rSZOefMZ771eR5DCCHQaDQajWaQYe7tA9BoNBqNZk/QBkyj0Wg0gxJtwDQajUYzKNEGTKPRaDSDEm3ANBqNRjMo0QZMo9FoNIMSbcA0Go1GMyjRBkyj0Wg0gxJtwDQajUYzKNEGTKP... | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | null | 2 |
math | grade-7 | bases-of-three-dimensional-figures | false | true | Look at this figure: What is the shape of its bases? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADfCAYAAADMSaSUAAAZzklEQVR4nO3df3SU5Z338U+YzGTyiyQSEwUEIxYosliIkFVT0SxtQLO6/iqgHrDsQt3tnu2Cu0Jty6NPUZ9WWS2loqwHXM6ysqJBWKUbZGOpLG3KApqNCBSaHyXRxGASmJlM5kfy/IEJCSAQuCb3zNzv1zmchMzkvj6j/3y4znV/74Surq4uAQAAADBikNUBAAAAgHhiy4K9dOlS5eTkaM2aNVZHAQAAQJxJsNMREa/XqwceeEBbtmzp+dmSJUv0zDPPWJgKAAAA8cQ... | [
"octagon",
"triangle",
"nonagon",
"hexagon"
] | null | 1 |
math | grade-5 | fractions-of-a-whole-word-problems | true | false | Alan loves donuts, so his friends give him a giant jelly-filled donut for his birthday. Alan laughs really hard and takes a picture of it. Then, he cuts the giant donut into 3 equal pieces. Alan eats 2 pieces on his birthday. Which model represents the fraction of the giant donut that Alan eats on his birthday? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJ8AAACfCAYAAADnGwvgAAAT90lEQVR4nO2deXiU1bnAf7NkJstMkkkme4Ask43NhJCwyeKOBQQFUUSLxVtb7eLSxba3deliW2qv4q22ihdUVFCKCogrVFmUsBlciNkhkIWQZUIm28xkMv0j4kXrwpLvO98k5/c88yQ8yfOdd5hf3vMt73mPzu/3+495oLILXD7o9SORKIJRB1YDZIRCnAl0x9x+/5520WFJhhoTwsFY0dX/jwQTZIX1mymRKIHLB2Wd0OCB8i7Qt/f2/0CKJ1Eaq6HfM4AOH+h... | 0 |
science | grade-6 | identify-how-particle-motion-affects-temperature-and-pressure | false | true | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | "iVBORw0KGgoAAAANSUhEUgAAAmwAAAGZCAYAAAA0Im0SAACYR0lEQVR4nO3de3xT9f0/8Fd6TdukLb2StNxpgiAUm8plIg04nUrD3NTvbFG3/SaNOraprbvoHKk6d7FFv9MpLX43h9rqxqYjRZ06Cd4ASYEiICl3aFMKtLRN7236+f1RziEnSS+UXE/fz4fY5uTkfD4J7Zv3+VwljDGGcayp6TxOnDiJnp5uSCQSf1eHEABAeHg4UlJSMXnyZH9XhYgYxT8SiCj+uRfm7wr408DAABoaGsDYACIiIvxdHUIEmprOQ6FQIDw83N9VISJ... | [
"neither; the samples have the same temperature",
"sample A",
"sample B"
] | null | 0 |
math | grade-8 | nets-of-three-dimensional-figures | true | true | Which net will make this figure? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAAITElEQVR4nO3dbWwT5wHA8T8JSZDA2LSsVCQQU9SRBBIfdFihw8QsgaLSKI40TemGklBpfKJLMmkfMlVa9oF2myotqYBu+0J4+W5XoRVUTjGJOsCk3TlQObSh2BSHoq3LxSFLid/2IbWbjBRQuXMe2POTIs4hep47/33nV/kWpFKpFJIwcuZ7BaTZZBDByCCCkUEEs3C+V+C7qKrK2NgYPp8PTdNQVRVg1vL9KIqCxWKZtex0OjGbzSiKYsh6P6wFIjzKCoVCnD17FlV... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUIAAADlCAYAAAAmw/5+AAAaG0lEQVR4nO3df3BU9b3/8WdQwsyVZLeiDVQgQa5KRJNgNaDfwq7XaDtVbjbMHcf2VrO008LMF26SznwH1OkYp6OF79zvl82IXrmdjhtl+sf3D3Mo2iklfN3gXCWRlg2FCRUpCT9M8lX0JEGdbLLZ7x/LWcDiD8jZPZtzXo8Z5mRX5pz3R9gX7885n3O2AEgheSOVSjGQgPc+hZEkjOtPR8R2VxdA0VVw0z9ASSEUoCDMKwOjKbqGna5CxDuWFsPVThchFzv6aXo... | 0 |
math | grade-6 | identify-equivalent-expressions-using-strip-models | false | true | This model represents the expression g+2g+9. Which expression is equivalent to g+2g+9? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAA+CAYAAAARUWyzAAAKAUlEQVR4nO3daWwc5QHG8Wdn77XX3mxi51gTJyZxjMmdplESB0HiUgQoqDRFKJUiFYFARf3QA4lWQkJF4gNVq7ZqVVWClIqKgCo1oaVqAjkFhNxOE2PnauLEsR07vtbH7nrPfoAsuHEOqWOPnfn/Ps3OvCs9/rCzj999Z8aRy+VyktTVldPOnUldupRVIpET7CESMfTUU77861deiVmYBsB48tJLgfz25s0JtbRkLUwztnw+h8rLnaqtdSscdlgdB8AE45Kklpactmy... | [
"g+12",
"11g+1",
"3g+9",
"g+11"
] | null | 2 |
math | grade-6 | rational-numbers-find-the-sign | false | true | The number line shows an unknown number, s. Is – s positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAlwAAAApCAYAAADgbPfrAAAGUUlEQVR4nO3dXWxT9x3G8efY+ODapE1g4aVSWG7gImIihOC8CFWp1qmdMqom4ybdhFAnoYFo4WYCTXu5mBoVqUVaBZrY6ISQmqGqNbSo0PZmdZjW2CHJIqWkbWiJYFtTKGrG7MSOX84ugk3TEJKUnZyc5Pu5iWyfRE90Eunx///zOYZlWZYAF2tra5NhGGppaXE6CuYI5xyA2yxxOgBwv65du+Z0BMwxzjkAt5lx4Uqn0+rq6lI0GtXKlSt5ZwkAC9jnwzn9+f2kBoa... | [
"negative",
"positive"
] | null | 0 |
math | grade-4 | identify-faces-of-three-dimensional-figures | true | false | Which shape has a square as a face? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAiVElEQVR4nO3deXAcd5338XfP1TOa+9JpST5iy7YcH5GTOMHEIecTjmRZWLLFk80uBQU8QJbdfXh4YPeppaBYlgdqlweyWWAL6qECm90A4VnMHUI2dkycS0ks27LlU5KtYyTNpdFo7unnjzlseeRYsmfUc/xeVRSVUcv9daKPuvv3/Xa3pCiKMpmEU/MQyUBaQRCECtFJYNXC+iZoMYA0mVCUl2fVLksQGs/NNtCdnM/9Q5sBesy5dAqCUBmRDAxFYSIJJ+ZBM5v... | 0 |
math | grade-5 | mean-find-the-missing-number | false | true | Tristan has the following data: If the mean is 884, which number could h be? | "iVBORw0KGgoAAAANSUhEUgAAAgAAAAAkCAYAAAD/2oLzAAAJgUlEQVR4nO3dWXBT1x3H8a8sYdkY2WCzGZnFeMFA2MGsIUDABOK0pJ1J6ZS0ZZpJHkImkyaZ8tBppm95aiYzaboMaYZpEpammQwUKMSUPXYwhpjVNosNkm2ChVe8SJZ0+2AwyDb4Gh9JF+v/efPV8dXv3HvOuUfS0ZVJ0zQNwOuFtjbw+wENIYQQQgwUJoiKgpgYsFjubtI0TXO3gdsd3mxCCCGECD6rFawxYPF55eIvhBBCRAq3G8wWiJKLvxBCCBFZPG6I8vnCHUM... | [
"874",
"841"
] | null | 0 |
math | grade-8 | parts-of-a-circle | false | true | What is A? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADICAYAAACdx5VnAAAjWklEQVR4nO3deXxU5aH/8e9MkkkykISQEAiEJYQtQQVlE3FBBRQXpGi1t3qtC25VWRTQ+kNc7r3t/dGrlUrVKlbQWyt2USsoFiGgrZFFiChLWMMWsq9kn2TuHyMnM7KqgefM5PN+vfLiPOfMZL5Jzh/feXjOGYfX6/UKAAAAQEhwmg4AAAAAoPVQ8AEAAIAQQsEHAAAAQojT4XBo1apVRx244IILlJycfNT+3NxcORwOvfTSS1qwYIEcDoc8Hs9pD3rDDTdozJgxrfb... | [
"center",
"chord",
"diameter"
] | null | 0 |
math | grade-8 | quadrants-and-axes | false | true | Which quadrant is the point Y in? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH9CAYAAAAgWgsdAAA9PUlEQVR4nO3de3xU9YH///ckQ0IScoMA4RKiVEANAbmI3EJFpItiERXW8tNWt66/1f11tf3y7T58uF1/W7fycH9dtoqXbdntSverW1cW2y0FF7kIMYg0IBAg2IASLiEh9xuTmcnMnN8fODFAgIl8JmdO8no+HrTMmeHk/fg4OfOez3zOGZdlWZYAAAAAGBFndwAAAACgN6FgAwAAAAZRsAEAAACDKNhAHzdnzhz99re/7bj9u9/9TjfddJNCoZB9oQAAcDAKNtDHTZg... | [
"Quadrant III",
"Quadrant II",
"Quadrant I",
"Quadrant IV"
] | null | 0 |
math | grade-4 | parallel-perpendicular-and-intersecting-lines | false | true | Are these lines perpendicular? | "iVBORw0KGgoAAAANSUhEUgAAAGgAAABeCAYAAADPP1ERAAAKHElEQVR4nO2de1BU5x2G38ULiBIEopQDDgi1pEIUKzpCMhqociAlCCimFlTitFQbJqIyJhONQIckYwqRjFpTbEQjFiuNeGnLJQ0Wq+J4qaCYQCpxCYgQBLm7y+3XP3DXRRdZlnOFfWaYYXfnnO+deefsnud8355VEBHBhGQxEzuAiWdjKkjiDCgo9Ugijn95WKwsJvQwoCDWNxSbU6Mxe6UdDuR8IlYmEzoonjxJmL3SDi3tTQAAx+nOiF+ThFXL1okSzoSezyDWZ7n... | [
"no",
"yes"
] | null | 1 |
math | algebra-2 | domain-and-range-of-radical-functions | false | true | What is the domain of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABmYUlEQVR4nO3de3yU9Z3+/2syk3MCCQkkEEgAERQkCAjKSbFYtdraQmuxJ7Xrbmu31ra/3e52uz1t17rd7Wnrqtv6XddDv91vt27VrmikKAgIChIhkIAcAoQEyGHIaSZzuOdw//7AUKIcMnB/uBPyej4efdgZ5r7yzn3P3HPNnXtmPLZt2wIAAADgiDS3BwAAAAAuJhRsAAAAwEEUbAAAAMBBFGwAfZSVlWnjxo0nLh84cEAjR45UQ0ODi1MBADB4ULAB9FFZWamampo... | [
"$\\{x \\mid x \\geq-5\\}$",
"$\\{x \\mid x \\geq 5\\}$",
"$\\{x \\mid x \\geq 3\\}$",
"$\\{x \\mid x \\geq-3\\}$"
] | null | 0 |
science | grade-3 | animal-adaptations-feet-and-limbs | true | true | Star-nosed moles are found in many parts of North America. They live in burrows. The moles eat earthworms and nuts, which they find in the soil. The feet of the star-nosed mole are adapted for digging. Which animal's feet are also adapted for digging? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOzdd5gkVb34//epqs5xcg47szub8y5hWRaWnEFBlCCCil5REVFA9N7rRVTUBUG4oBiQJCIoOUgOm2ADm/PMzk6OnXOl8/tjL/MjLLDAevH67dfzzPNMd1ef+nRVndOfOnXqtJBSStM0sW2boqKioqKioqKioqL/mxRFQdM0hGEYspjcFxUVFRUVFRUVFf3fpygKSjG5LyoqKioqKioqKvrXYNs2yicdRFFRUVFRUVFRUVHRgVNM8IuKioqKioqKior+hRQ... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOy9d5gtVZX3/9mVTz59Ovft7hv65kTOiERBRMAcwIC+OjPqOOqo6DvzzoyDacTsoIPjYAB9ERUTiiIgClwyl5sDN/ftHE4+p+Levz/q3h4yyDDjq7/zeZ5+nu46dap27aq9u9Zea32XUEqpMAyRUtKiRYsWLVq0aNGiRYs/TTRNwzAMhBB/7Ka0aPFnidYynFu0aNGiRYsWLVq0+NNHSkkYhn/sZrRo8WeL1jKcW7Ro0aJFixYtWrT486D1bt+ixX8... | 0 |
science | grade-6 | identify-earths-land-features-using-photographs | true | false | A canyon is a deep and narrow landform. A canyon has steep cliffs on both sides. Sometimes, a canyon has a river running through it. Select the canyon. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOEAAAC0CAYAAABi8Es+AAEAAElEQVR4nGz9WbBuW5bfB/1ms9b6mt2c9jZ5b97MrMyqyrJUkpBkbMsGCdkG2ygw4VCIIAggwjwBDwQQvMADEbzyyivBE0FAgMHIYUMYOSxLtmRLVVKVSlmZWbeyuZm3Offc0+zma9Zas+FhjDHX2jdrZ557zt77+9a31pyj+Y//aKb7X//v/w8VoFb541zFOUfwvv0heIJ3eO/x+jPvHcF5YvQ453HO4Rz6Xkfwga6L9H0ghohzDgDvHc55Si2kOXM4nxnHmZw... | 1 |
math | kindergarten | one-more-with-pictures-up-to-10 | true | true | Count the hearts in this group. Which group has one more than the group you counted? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABeCAYAAAAZpWPpAAAIVklEQVR4nO3dQWxVVRrA8U9LQoU2GGrCSJlggrYmJHYxXcDOslSHlWwwg5uZwBYzbCGwhcgWEjZiZAMrHF3a2cECF504ia2yIANkmlhjU6yYYDqLTpUUUGrPPd997/1+S4V3zvuH5Hy57913n1laWloKAACgiGezNwAAAN3EgA0AAAUZsAEAoCADNgAAFGTABgCAggzYAABQkAEbAAAKMmADAEBBBmwAACjIgA0AAAUZsAEAoCADNgAAFGTABgCAggzYAABQkAEbAAA... | null | [
"iVBORw0KGgoAAAANSUhEUgAABMQAAAB2CAYAAAAnfU+XAAAPBklEQVR4nO3dT4yUZZ7A8V9Pt4pN92LA2KvNhEkcu01MZBNJBm82RxVOesEsXnYCV81y2U0kctWMe4TEy2A0megJRo+yN8iEObCZSWyQZMmCa2fFiI3tn21Se6gp7eWPdNP1Pr+36vl8Lp0g1vvUtwgv7+95q2okIjoBAAD0RafTic9/iPh0KWLxesSyf20DQKqxkYjJ0YjHxiOm7u3+2kgYiAEAQN98/n0n/vR19ioAgFv5zd9FPHRvxFj2QgAAYJicX+r+fPj... | 0 |
math | grade-6 | compare-area-and-perimeter-of-two-figures | true | false | Which figure has a greater area? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAALAAAACgCAYAAACsYebFAAAHTElEQVR4nO3aXUiTCxzH8d+jW5lHz2HTrR0iQsWOuynxRisrI9fFbCs2oheJdVFdCHZhLxeDurGLIDoRdRWxm24cGUFpRBkrjYJDhaQiZTAqUg+WW77Ml7TnXIxGO2bly3z8s98Hhrnn8eEXfnt4xBRVVdXeceB1BBicBCZUEC1aOgXITAXy04HlSwCld0xV/xnQehbRzBX/Dui6ItFP/lwC/PVbtG6ixWpwEng5DPSMA68iQMrARPQA4yUJMlOjrQLA0CSQMvn... | 0 |
math | grade-1 | read-a-calendar | false | true | Look at the calendar. How many days does it show in December? | "iVBORw0KGgoAAAANSUhEUgAAAssAAAF2CAYAAACYtNXtAABbT0lEQVR4nO3de3xU9Z3/8ddMJvf7PdwJBAhgiIAUIUS2iAXFu6z7k3XXrVC1VX+2WJCmVdtVpIrt1suuuqsW0VpQ+SkBiyC4CZcCIpdwCxAIkISQ+4XcbzO/P0IGYnJgAkkmE97Px4MHMOfM5DOfnDnznu/5njMmm81mq9xdQ+X+GhqLmxARERGRq2cJdcNvjDd+472dXYpcBVPFd9W2xsJG/Cb5YXIzgc3ZJYmIiIi4OBPYmmxU/L0SS4Qb/uN9nF2RXCFz5f4a/G7... | [
"31",
"30",
"29",
"28"
] | null | 0 |
math | pre-k | cones | true | false | Which shape is a cone? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAYEUlEQVR4nO2dSXAb15nH/72jG01QBChxcRXpqpgaa5mDlhrZB8kXT02U5RCpKrkkuczBOWZydm7WNancRoecnKuXSspRpsaXUAcvpeUwIuWITpVIl7mIBCkAjQZ6fXN4fA2ABGk0NjaA96tSSQJJdBP966+/971NIISQTRf42gZKAeATcDiJQxaAMQlYMIApFRA2HUK+LJ70aXE4rXMtA8grNv3PjAr8S5pazeEkjVIA/KMMbLjAMxsQiz79ApeWk2TGJOooAFg... | 2 |
math | grade-1 | compare-clocks | false | true | The clocks show three things Ed did Sunday morning: Which did Ed do first? | "iVBORw0KGgoAAAANSUhEUgAAArIAAACZCAYAAADTjdlcAAAox0lEQVR4nO3deXhTZd4+8DtNd7rvZWsLFiqylGVYlArSsogIdEDGghsiihuKojIoUBzeYUZx+70qOuAMg4Je4wyK4oL4gkBRxgWBgqAspR2wFAptoXubfH9/dJo0ZGlOctIk7f25rrmGnpzlOfHc53xPzpMnGhERkEe6f1MtNv7YqNr64kq/R2BduSrrCggKwvbnxyAs2E+V9RF5C+aSyPMwlx2Xj7sbQJYVlomqoVRbXU0N1n1R6O5mELUp5pLI8zCXHRsLWQ9VVK5... | [
"made the bed",
"fed the cat",
"packed a lunch"
] | null | 2 |
math | grade-4 | interpret-bar-graphs | true | true | Julie, an employee at Roy's Convenience Store, looked at the sales of each of its soda products. Which bar graph shows the same data? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAC9CAYAAACJdQrFAABY+0lEQVR4nO3dd1QUVxvA4d/SO6hgb1hQbKDG3nvBioItRoI9UaMp9kRNLFGjyRexRBFNYkVjLIhRLBF77GIv2FBREZGywMLC98fK6gIi6CKW9zlnz3Fn7ty5c2c5vnPnnTsK3PanIoQQuSg1oEFeN0EIIYR4YwzyugFCCCGEEEK8TyTAFkIIIYQQQo8kwBZCCCGEEEKPJMAWQgghhBBCjyTAFkIIIYQQQo8kwBZCCCGEEEKPJMAWQgghhBBCjyTAFkIIIYQQQo8kwBZ... | null | [
"iVBORw0KGgoAAAANSUhEUgAABSMAAAHDCAYAAADfvQ8tAADxW0lEQVR4nOzdeViU1fvH8fcMMOyICkrhLirijrlvuGaS5pKGtllmZRlmi5UtVpptZvlNK1vM/KWlJqS5VO6mlmW54Iq74oIKsiMDzPz+IEZHUMGQcfm8rsvrkpnznLnPeR4Kb+5zjgGwIiIiIiIiJWLlyWzWJ+QAYMAKGBwbkIiIiIhDWbFiACu09XPG2dHhiIiIiIjcSH5PyDkv/ahEpIiIiNzsDHk/ERlg3ekcJSNFREREREpSfi1ksLeRdv4u+JmUkBQREZG... | 1 |
math | grade-8 | identify-reflections-rotations-and-translations | false | true | Look at this shape: Which image shows a reflection? | "iVBORw0KGgoAAAANSUhEUgAABbAAAAC3CAYAAADD5XikAAAY8ElEQVR4nO3de4xVhb0v8B86yqv4aMfH3laqx1gdYKbqBuTeqm3BosT25PTcYq3Jreb2mpPUtjZtbqzlDzU3Nzemf5l7a5r+oamnqcEeAYuR+hiuHIhIZQ1tLT6a1iddOwgSHopyVLh/jGxh2DxmZq299trz+STEPTOb3/pluxiG7177u8dFxL4AAAAysW+fH68BACArxxW9AAAAAAAANCPABgAAAACgLQmwAQAAAABoSwJsAAAAAADakgAbAAAAAIC2JMAGAAAAAKA... | [
"C",
"B",
"A"
] | null | 0 |
math | calculus | determine-continuity-on-an-interval-using-graphs | false | true | Is the function f(x) continuous on the open interval ( – 3,3)? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABwK0lEQVR4nO3dfVAc950n/vc8AcPMwCBAIMsGWdaTQYCEhCSeJDlybMdOvJG8WTmpPJaTPefyuHW7dalcKlWb+PzLXS5JxXG8udzm/HCb3Vx8kZ21ZKzIFgIElrCwhAR6QohnxMPAMI893TPT/ftjBBJ6BKu/GgberyqXi4F581H3TM97mp5ug6ZpGoiIiIiISBfGeA9ARERERDSfsGATEREREemIBZuIiIiISEcs2EQ0zcGDB7Fs2TI88cQTAIBPfepTeOONN274s+F... | [
"yes",
"no"
] | null | 0 |
math | grade-7 | perimeter-and-area-changes-in-scale | false | true | Look at this rectangle: If both dimensions are tripled, then which of the following statements about its perimeter will be true? | "iVBORw0KGgoAAAANSUhEUgAAABEAAAAOCAYAAADJ7fe0AAABJklEQVR4nM2SIavCUBzFj/KGxXHBYlm3+A2EpZkHi4IWo19gX2CYFDFaZNoNK4LZYjWYxvYVLKYxfi8IA32PxxOLB/7hcg+/ezj3XwPQm6q/C6ggl8tFruvKGKNOp6MkSX41bzYbGWMUhqHSNNXxeLxfAHS7XRaLBWVZst/vaTab3G43nhUEAcvlEoD5fM50OgVARVGwWq0oiqIyG2NI0/QBEEURtm3jOA6j0YhWq0W73SYMQ/T82ul0wnEcyrL8kcT3fbbbLQCTyaR... | [
"The new perimeter will be 3 times the old perimeter.",
"The new perimeter will be\n1\n2\nof the old perimeter.",
"The new perimeter will be 2 times the old perimeter.",
"The new perimeter will be 4 times the old perimeter."
] | null | 0 |
math | grade-2 | identify-the-fraction | false | true | What fraction of the shape is orange? | "iVBORw0KGgoAAAANSUhEUgAAARcAAABkCAYAAACsEnQPAAAUj0lEQVR4nO3deZgU5YHH8W9VV9/HHD0zwCCDCAyngKhcckRFjW40JpvEkyBPPGJMNtdu9snzZDfJ45PdHG700V1Nom40UdGYjRqiEleT1ciNyCkyM4SBOZirZ/o+qrqq9o8eRglyd3f19Lyf5+GB7unp+jUP/Kb67bfeVzJN02SYMhIhjHg/RiqC5PQie6qwVYy2OpYgCIBidYATMeJ9aN3NQ7+yvX9Fj/XmCiU5cNzvk+wuZE8VsqcSW+UYnOPn4miYg6NhDpLdXcR... | [
"1/2",
"1/9",
"5/7",
"1/3"
] | null | 0 |
science | grade-5 | identify-vertebrates-and-invertebrates | true | false | Select the invertebrate. Hint: Insects, spiders, and worms are invertebrates. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAC17klEQVR4nOz9a6xtWXbfh/3GfKy19z7nvuvWu7qqn9XN7uajm0+REk0qliULkSUokBMZiZMAseMEiQPkQ4zABvJAvgQIEhjxNyN2FMWCQcaiJEqiLNEKWyRbJMVXs5vN6q5X17vq1q1773nsvdeac46RD2OufU6RTZns+8UBdMhC3b51zj57rzXWmGP8///xH/JrD8yeP4IrkX/x9S++/hv5ddrghXN4e4YbCX7suv99+BeB+y++/pv+dSXC80f+57N28ffhXwT... | 3 |
math | grade-2 | how-much-more-to-make-a-dollar | true | true | You have these coins: Which coins do you need to make a dollar? | "iVBORw0KGgoAAAANSUhEUgAAAUEAAACMCAYAAADiDxvvAAC1SUlEQVR4nOy9Z2Bc53mmfZ06Z3rBoPdOkGDvokj1LrnIcpH72rEdZxMn2U2yaZseZ7/1xnGSjbNxL3GTbVmyuiiSIkWxk2AvIEEQvU7vp34/BoStWJbVRUW4fqkMZs79njnPPO/TXsFxHIcFFlhggbco4ht9AQsssMACbyQLRnCBBRZ4S7NgBBdYYIG3NAtGcIEFFnhLI7/WH+DYFoV8nlwmTTaTJpVMkk/GyBVLiIA/HMEfqsDn9aJ5vQSDIRRVRRAEEITX+vJeU15... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAi0AAACMCAYAAACwNpkQAAEAAElEQVR4nOz9d5ycZ3nvj7+fOr1u71W7Wu2qd8kq7uCCsWPAdAIhJCQBwjk5SUjOjwNJzjlJfhAgOYQAoVcHG3dZsmVZsiSr97YraVfb+8zOTn3694/ZHWwCwU1Ghnm/Xn7JWu3MPJ97due+nuu+rs8lOI7jUKRIkSK/pQiC8Ou+hCJFirxExF/3BRQpUqRIkSJFirwUikFLkSJFihQpUuQNQTFoKVKkSJEiRYq8ISgGLUWKFClSpEiRNwTy1X4Bx7bIZjKkk7O... | 0 |
math | grade-3 | scalene-isosceles-and-equilateral-triangles | false | true | What kind of triangle is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAB6CAYAAACFmCTJAAAe9ElEQVR4nO3daVxV5fr/8c+GzSSDblRQVBLBWZHIMUkth5+zOQ+BZXn8Z2lpWVlpntTM0nIuh5OpOaSllppzmaV5TEwcItMoVKwjRqSCbMb9f6CQ5pACm7XB7/tJsGCt+0uvHlz76lr3bbLZbDZERERERKRQOBkdQERERESkJMkrsNu2bUu5cuWYMWOGkXlERERERIq1vAL7xIkTJCUlMWLECIKCgli2bJmRuUREREREiqW8AnvAgAF5F+Pj44mMjCQ8PJxt27YZEkx... | [
"equilateral",
"isosceles but not equilateral",
"scalene"
] | null | 2 |
math | calculus | determine-continuity-on-an-interval-using-graphs | false | true | Is the function f(x) continuous on the open interval ( – 4,9)? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB/MElEQVR4nO3de3xU9Zk/8M/cZzK5kkAS0ASRmyAkRJGLBKFQFamuoBZ0a6tlu2u31su2259t3f7cXUV3t7bVqu12F6v2pvBTsQIBUa4GAQkkknALgYQEmNwnmeu5zDm/P4ZEAgQSON9MJvm8Xy9emsmcZ56cM/OdZ77zPc8x6bqug4iIiIiIDGGOdQJERERERAMJC2wiIiIiIgOxwCYiIiIiMhALbCLqYtOmTRg5ciQWLlwIALjzzjvx/vvvX/C+iqJg+vTp2LlzZ1+... | [
"no",
"yes"
] | null | 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. | "iVBORw0KGgoAAAANSUhEUgAAAiAAAACXCAYAAAAs2eD4AAAzwUlEQVR4nO3deXhU1d3A8e+dLQlJCAkkYSeEQCKbKCoqqKAs4oK71qWiryK2iqK2Fpda69JWaxW3V4srFpfK21oRBbUqghsIsiNLWMKSAAkJIfts9/3jAoIkYWYy5947k9/neeYBwuTcM/fOOfd3lnuOpuu6jhBCCCGEiRxWZ0AIIYQQrY8EIDFs2bJlaJp22Mvj8VBQUMCUKVOorq4OK71LL72UkSNHRpSXlStXUlBQQLt27SL6fSGEuexSf6xZs4Zx48aRmZlJZmY... | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is greater in Pair 2."
] | null | 0 |
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