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 |
|---|---|---|---|---|---|---|---|---|---|
science | grade-4 | compare-strengths-of-magnetic-forces | false | true | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | "iVBORw0KGgoAAAANSUhEUgAAArwAAACtCAYAAABSr6xUAAAtzklEQVR4nO3deXxU1f3/8desCUlISEjYZQ2yKSigiOCGiuBWWgW1Wru54tLaosWfS7+15Vu1WutWtVX5quAO7larVYqggOwqiIQ9JKwhQPbMzP39cQW3mMwkd+YueT8fj3lo4sy9nzH3nPM5yz3XZxiGgYiIiIiIR/ntDkBEREREJJmU8IqjTZgwAZ/P941XQUEBJ598MnPnzk3oWJ9++ik+n4958+YlHEc0GuXmm2/G7/fzt7/9LeHPi4i4hRPq3Wg0yl//+lcGDRp... | [
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is weaker in Pair 2.",
"The magnetic force is weaker in Pair 1."
] | null | 2 |
math | pre-k | addition-sentences-up-to-10-what-does-the-model-show | false | true | Which addition sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABUCAYAAAC4PkCPAAAQkUlEQVR4nO3dTWwc533H8d+87fuStLik+SKKtCyTsWBJSKnCkFFJBYrIh8iw0RhwTkEatE5ziy8FDLRN0hb1pUV7idGiRV8AA20PDlAkaJAASYraknuI7bi0WluSJUrii0RzKYnL3dmdt6eH4fJFIikuOfPM7OzvAxi26eU88/Vh9d/ZeVGEEAJERERERBQINeodICIiIiJKEg7YREREREQB4oBNRERERBQgDthERERERAHigE1EREREFCAO2EREREREAeKATUREREQ... | [
"4+4=8",
"5+3=8"
] | null | 0 |
math | pre-k | ordinal-numbers-up-to-tenth | false | true | The first picture is a dog. Which picture is fifth? first | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAh/ElEQVR4nO3de1QUV74v8G9BdysN3YgwgEhHhfFFAM2JonZmlHOCRCcxPhMTTcbJGM84kzlGE0fvujdRyfKsNTHqxJycxBzNYDLmYaLRGfMEM6OTFdBEjwQf+BgITitCYkdpaJDuhrp/lDTd0I+q6qrupur3Wcssbeqx2fnt397VVbU3w7IsC0IIIYQQQogkYiJdAEIIIYQQQpSEBtiEEEIIIYRISLYB9g0nixGf2XDHX1tww0lPoRBCCCGEEHUQNcA+cNWJknM3Aw6... | [
"house",
"dog",
"paw"
] | null | 0 |
math | pre-k | cylinders | true | false | Which shape is a cylinder? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAWk0lEQVR4nO2dWXBb53mGXwDnAMS+cae4iasobpYUy7LlyLE9dpq2iW8ynkndTqbTJjOdqTvTTmfaaafpRXrTaaepk9aJd0WW48S1LVOSJYoStVuyIslaKFmkFgIkIIE7QQDESqAXZyFAUhSXA5wF/3Nj6wA45xP18MNZ/v/9ValUKuWLAXdmgcAckEiBQJAclAowa4AGA1CiBVS+aCp1YUbssgiElbPdAlC3Z5k/lGmBJiNjNYEgNQJzQH8IeBADBmYB9UyCeYF... | 1 |
math | kindergarten | select-two-dimensional-shapes | true | false | Which shape is a square? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACbCAYAAACao4KyAAAEj0lEQVR4nO3dQW4UVxSF4dPtsgdAw6ClWIgxsARWwQZYBXtgA+wlu2AHhMxjBp64wRKmW8WghJRBEHHVe+fd++r/RiCE1HXuLyfYbdiM4zhe3Ul/30qHk3QcBSw2bKTdmfT8gXR5IW2uvo3jh5vWLws9e/VYGj7dTj95eiG9fDhVCCx1OEkfv0r/3El/3Urbm+P0C0SGknZnU1OS9OUkbU//+gWgpJ9NfR+lbduXgrUgNFgQGiwIDRaEBgtCgwWhwYLQYDG0fgE... | 2 |
math | grade-6 | interpret-histograms | false | true | In a study on public parking, the director of transportation counted the number of cars in each of the city's parking lots. Are there more parking lots that had 21-25 cars or parking lots that had 26-30 cars? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADmCAYAAADvPPLxAAAtkElEQVR4nO3deVwV9eL/8TccdpFFBRUxzdDcNzQ0d1MLsa+aO6kttmpW3my7t+7Dvn27PNJumrc0c2m5uWUuBeaSue+K4i5KdhEUFWVRWUTg/P7w57mSgoOcw+Ho6/l49Hgwc2bm8x6GiTfjnDlOZrPZLAAAAABW4WzvAAAAAMDdhIINAAAAWBEFG7CCI0eO6MUXX9TMmTPv6HVrWLZsmV588UVt2LDBZmMAAIDbc7F3ANjfuXPntHz5ch05ckSXL1+Wt7e3QkJC1Lt... | [
"21-25 cars",
"26-30 cars"
] | null | 0 |
math | algebra-2 | find-inverse-functions-and-relations | false | true | The graph below shows a function. Is its inverse also a function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABpiUlEQVR4nO3deXQU550v/G+rF+1SC0lIQlgSMostLAmwwQEjg4NjO3biGJIMTm4WZzyLc+PYyT137snk5uZN8vp4cs9MMrHHTpzc8RhnzpybCW9sJwYEwWZTRAxGIIEExkKgnZbUUner16qurnr/kEtGLKYb1aNSq7+fc3wStdRffnqe6upfP6rFommaBiIiIiIiMkSa2QUQEREREc0lbLCJiIiIiAzEBpuIiIiIyEBssImIiIiIDMQGm4im+L//9/+iubl58mtFUfD... | [
"no",
"yes"
] | null | 0 |
science | grade-3 | identify-vertebrates-and-invertebrates | true | false | Select the vertebrate. Hint: Mammals, birds, fish, reptiles, and amphibians are vertebrates. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAADhxElEQVR4nOz9WaylWZbfh/3W2nt/3zn33phzzqwxq6qruqt6bjalbo4iRdPgAAkkTQmGQYmiZRsQbNh+sOUHC/aDDRh+04MJW4Al2oJpQZQIyzTl5tQkTfbAnljdXWNnVVZm5ZwRccdzvm/vvZYf1j4nso0m0Kp4kQFGIZCZUTfuPec7e1jrPy35xXP37zuFW4l//uuf//qv5a/LDl+7hrdXuJfhp+/Gn+s/X7j//Nd/3X/dSvB9p/HvV/3Jn+s/X7j//Nf/P/w... | 0 |
math | pre-k | count-sides-and-corners | true | false | Which shape has 3 corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAHsElEQVR4nO3dz28WRRgH8O/O29bal7b0bQttSYyCSAIcIAFMIKRYESIh8Qchhn/EoxcPXrx58qIHD4YYURKCAUMMRmNsYogXIlQjEktfaGmhpU379t0ZD2vjSoDwvu/MM7O738+NILvjO99uZ57dZ9/IGGOqNeD3JWAhBuoGRC1ri4DuErC1C9jYAUTVFWPG530Pi/Ls5R6gbWIp+cNwB7CtnKSQqFULMXBtEZiqAdeXADVfT/6CISObuktJpgDgQQyoOPUXRDa... | 1 |
math | grade-5 | acute-obtuse-and-right-triangles | false | true | What kind of triangle is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACHCAYAAAAslC4OAAAYoElEQVR4nO3de1RdhZn38d/hGi5JCOEmdwJSlInRXExIyM2YYGIiWJJDCaWDoX0bycXYjFGrTtV6aW21MUuTzuSyjKtvu2RmLGOHaYrt0ET6hnFkprwtVtRjsESPNCSHA4dzuJ/5g1ybe3LgwOb7+SeLDWfvZ7P44+fjs59tcrvdbgEAAADwCB9vFwAAAAAYCQEbAAAA8CACNgAAAOBBBGwAAADAgwjYAAAAgAcRsAEAAAAPImADAAAAHkTABgAAADyIgA0AAAB4EAE... | [
"obtuse",
"right",
"acute"
] | null | 0 |
math | grade-2 | compare-vertices-edges-and-faces | true | false |
Which figure has fewer vertices? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAIAAAACACAYAAADDPmHLAAAWj0lEQVR4nO2deVjU1RrHPwyLJAJecwktRYVR0EBxTxCwjdwTU1AUQlwoEjO3vCWkXSujhNRQUQH1KlhXzH1fUwl1QEJU3CBRMMBYhABhfvePiQkTRWBWmc/z+AgMv3Peec6Xs7zne87oCYIgZJfDtRIoqoQKAR3PMAZ6YKoP1k2hjRHoZZcJQkKhusPSoQ76mYHB1RLZNxZG0MVEpg4dzy5FlXClGLLKIa0ERIUVshd0jd84MNWXtTXA/UoQVVZ7QUfjoKqtHwg... | 0 |
math | grade-5 | acute-obtuse-and-right-triangles | false | true | What kind of triangle is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAClCAYAAABm8IozAAAcjUlEQVR4nO3df1zW9b3/8ecFF79FBYlfRaJhGD8Sp3ZByIbD4jg84hQNuX2/i+82qWycszZ3yjpzaW3a2qmz5FsxzGLWiRlRGq4klxsbKShi6gwXJcaSwlAMEeXXdf4wKcRMLi74XMDjfrt1W7cPn+vzedL+efK+va/X22S1Wq0CAAAAYBdORgcAAAAAhhMKNgAAAGBHFGwAAADAjijYAAAAgB1RsAEAAAA7omADAAAAdkTBBgAAAOyIgg0AAADYEQUbAAAAsCMKNgA... | [
"acute",
"right",
"obtuse"
] | null | 2 |
math | kindergarten | compare-two-groups-of-coins-pennies-through-dimes | true | false |
Which is more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAaEAAACYCAYAAABNqlYTAABAiElEQVR4nO3deXScV5ng/++71l6lKpV2a7EWS7K874kXkhBMFpIQEqChG/qwJPTMrwd6AnOgG06v0336AEMzzDA0PdA0oQmk02BCCBCcBTubl3hJvMlSLMvapdJW+/Yuvz/Kekmm6SaGyKWg+znHR15kW0/d59VT9733fa5k27Y9UYCXM5A0wbARBEEQhEWhShBQoMMLNTpIE3nbPpIo95clCIIgLDfbg6D2Z0q/qNOh01eqUIIgCIKwGJImnE/DeAH6MiAnjNI... | 1 |
math | precalculus | solve-a-triangle | false | true | In solving this triangle, which law must you use first? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAE4CAYAAABhf4QaAAAgg0lEQVR4nO3de5CUhZku8LeHizDIIF4ixiuocQtQPKsroCQq5YomMcq6XnYJppITI6Z0g7IaxUTRRJEVCDmsK4oSjdEYNEsMBiSx3JhAZsAblGK0VG6JgCghwuEqM3P+MMNpYICZnq/768vvV0VZTvd0v1VW4VNdM8+TaWxsbAwAACARVWkfAAAA5UTABgCABAnYFNQXv/jFOP7443f7+ne/+93IZDLxq1/9aqevf/jhh1FdXR3jxo0r1IkAAG0iYFNQ1dXVsXnz5p2... | [
"Law of Sines",
"Law of Cosines"
] | null | 1 |
math | grade-3 | angles-greater-than-less-than-or-equal-to-a-right-angle | false | true | Is this angle greater than, equal to, or less than a right angle? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABwCAYAAAAkAwevAAALNUlEQVR4nO3dXYyV9Z0H8O8ZbXmzYdSQtOxSaxNA1I1jdVshaQe0bzZpmF4UY19gSGxM9qK12V65e0EvN5vN0pveFOMBC41EUwk0aRvFoWiH+q40KwIR11WKb+HQjFCE6ewFnnlBZubAPM+ZOcPnc8U854Tnd/nNyff//1UGBgYGAgAAFKJtsgcAAIDpRMAGAIACjQjYteO1rK2uzeX3XJ7K3ZWsra5N7XhtkkYDAIDWUxnewe76eVe2vbhtxBfWLF2Tane12XMBAEB... | [
"greater than a right angle",
"less than a right angle",
"equal to a right angle"
] | null | 1 |
engineer | grade-8 | laboratory-safety-equipment | true | false | Select the apron. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AABAqUlEQVR4nO29d7xkV3Xn+1t7n1jp5tutbrWkVkAoWiCSQTIIcCAZbEsyfgSPnGTGHzx+DoOfx++N7LE/H489Hg8ef5jBCLAxPH9o0mOwwRpjJIxsgxCSLBEkJNTKHe69fWPViXuv98epqlvh3Bwq9P7yaVTnVNU5q+456+y1116BsEucDoK/JOCdu3W8Nfgr5XnvOkhU3ePzGAxDBe3GQWaq1WshxD0AxG4cbz0Y+CYR3TjleY/s9bkMhmFhdxRTiD/YtWNtAAF... | 3 |
math | kindergarten | one-more-with-pictures-up-to-5 | true | true | Count the crayons in this group. Which group has one more than the group you counted? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABmCAYAAADxjOYpAAAgdklEQVR4nO3deXyV5Z338c91lpwk52TfQxKyEDZZRAQUBdSKonXHpXWr1bZa16rjaGf06YzWqTO20077qtppXWpdxlZcWiuyKApWQTaD7GQBspCNrOecnCXn3M8fCRHQzjNPJ+GQ5Pv+h5c3t7yu6wV/fO871/f+GcuyLEREREREZFDYYr0AEREREZGRRAFbRERERGQQKWCLiIiIiAwiBWwRERERkUGkgC0iIiIiMogUsEVEREREBpECtoiIiIjIIFLAFhEREREZRAr... | null | [
"iVBORw0KGgoAAAANSUhEUgAABCEAAAB+CAYAAAAa5QvPAABCX0lEQVR4nO3dd3gc1bnH8e+ZbdLuSrvqvcuSe8W9AaGYXkwNNSH0FkIIIYEklxJIIZCQBHJJCBBKkksLIRiwTbENNrjKVZLVbPW6arvaPvePlYwNJDc3WFpbej//+GEYeM4gXj3nvHPObxSgI4QQQgghhDgs3msL8FFnEACFDqjoDkgIIaJGR0eBDouSjSxOMWKM9pCEEEIIIYQYTdZ3Bg9qO0gDQggxlqnIb0EFH3YGybVq0oQQQgghhBDicBra+zA+TmNxiol... | 0 |
math | grade-3 | 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? | "iVBORw0KGgoAAAANSUhEUgAAAOoAAACcCAYAAABx7zeSAAA0w0lEQVR4nO29eZRU5b3v/Xl2VU/VdNPddIWhwAZswhDUEDBijM1Cj4AxOQjcg2BCormeYHxPbpaS8zogi9y7GHR5ryZvzjKe5ESu8irmVQ+2yVlIrhoDEmXoQzSEQUCEphuwm567uoa9n+f9Yw9V1RM91NBdXd+1oGoPtfezd+/v/o3P7yeUUooMMshgSENL9QAyyCCDK8Od6gEMFH/4wx947733OHfuHOfPn6empoaamhpycnLw+Xz4fD4mTpzI1KlTueOOO/jyl7+... | [
"certain",
"probable",
"unlikely",
"impossible"
] | null | 1 |
math | algebra-2 | domain-and-range-of-absolute-value-functions-graphs | false | true | What are the domain and range of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABsbklEQVR4nO3de3Rb5Z0v/K9uvl/kS2I7TuyQhAQc7FwgQELCZUKBgZY2aTuhXdOWGWY69JTS01mrZ/XMantm+rI4fc9MO287tKenZzgF5u27OmUKzJDgpIGEJNglJiZxYicE4yS+RpZlS7IuW/uivd8/HBk7sWPJ2o918ffzD1jR/vnx3tLWT4+er7bFMAwDRERERERkCmuqB0BERERElE3YYBMRERERmYgNNhERERGRidhgE9E0tbW1aG1tnfz54sWLWLJkCXp7e1M... | [
"domain: all real numbers, range: all real numbers",
"domain: $\\{x \\mid x \\leq-1\\}$, range: $\\{y \\mid y \\geq-7\\}$",
"domain: $\\{x \\mid x \\leq-1\\}$, range: all real numbers",
"domain: all real numbers, range: $\\{y \\mid y \\geq-7\\}$"
] | null | 3 |
math | grade-8 | multiply-polynomials-using-algebra-tiles | true | false | Which area model represents the expression (2x+3)(2x+1)? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAQAAAAEACAYAAABccqhmAAAQH0lEQVR4nO3dbUyUd7oG8GueZ3gd5EWhwoCrBd/bNQprrLHubtrSamPbbDbZxKZJY3I+NNnaNqY5iWZ3P27P2WTfemJqTLqbbrtrtrY90WZXlLi0emxtXQao+IIICpQBcRQGZ2BhZp7nfKBQYJXCvPDv87+v3xfLWOf+55K55pkJzu2ybdvuHQWuDgF3YkDUBhFpyu0CFpjAimxgcTrg6h2x7c8HVR+LiObbplzA3To09kVJOrDKM9YORKSnOzGgJQz0jAJXhgB... | 3 |
math | grade-2 | which-table-is-correct | true | true | Hannah looked in the kitchen and found:She wanted to know how many of each snack there were, so she made a table of the snacks she found. Which is her table? | "iVBORw0KGgoAAAANSUhEUgAAAdYAAAE6CAYAAACrnHOjAAEAAElEQVR4nOz9eZRk13WfiX7nzjFH5DxW1lwozARAkAQIEhwlQhxlmbRo6dHSsySrtWR3m1ar3eqW7GXZy1Z7udWy/eTn9iAP0pNkkWZbsklRBkUSJAiCQAGFQo1ZQ86ZkTEPdx7O++NmVaEIUCKBrAJRdb+1YlVGxo2Ie3ZFxu/uc357H/F3/s7fkWRkZGRkZGTsChrAr/zKr7ze55GRkZGRkXFToLzeJ5CRkZGRkXEzkQlrRkZGRkbGLqJdjxeVcUTSvUTSOIPsLaE... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA0AAAAE6CAYAAAA/RTLMAAEAAElEQVR4nOz9eZBk133Y+X7P3XPPrH3t6r3R2AmAIAkQJLhKhEmKlGXRoqVHS8+SrFHInjGt0Xg0luSw7LA9Dlsj20+eGXssL9KzZFHms2STIk2KKwiCQAONRq/VS+1VWVW5Z9793vP+uNXdbIKbgOoNfT4RGd2533s6OvP3y3PO7yd+7dd+TaIoiqIoyq74tV/7tZt9CIqiKMp3YQD86q/+6s0+DkVRFEV5XVAJkKIoyq1Nu9kHoCiKoiiKoiiKcqOoBEhRFEV... | 1 |
math | pre-k | count-shapes-up-to-3 | false | true | How many triangles are there? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAACbCAYAAAAX3e8+AAAWKUlEQVR4nO3dS1MbaZrF8dMTPTG7mYiJ6cXsZjHL/gj9+dp2uO3F2BuHe+NwVPgSMHZU2AYMxlVAYRcSGCwQIC4Cg1EK3ZDQlUxlzsI13dXlCzel3sxX/9+uDGSewk/YR/jVk78LgiAQAAAAACv8k+kAAAAAAHqHgg8AAABYhIIPAAAAWISCDwAAAFiEgg8AAABYhIIPAAAAWISCDwAAAFiEgg8AAABYhIIPAAAAWISCDwAAAFiEgg8AAABYhIIPAAAAWISCDwAAAFi... | [
"1",
"2",
"3"
] | null | 2 |
math | grade-6 | which-figure-is-being-described | true | false | Harry saw a 3-dimensional figure. It had 5 vertices and 8 edges. Which figure could Harry have seen? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJAAAABSCAYAAAC7Zl0HAAAJ/UlEQVR4nO3dW0yUZx7H8e9wUlSYsSJTkQqteEAFMUsVXW1kU7YEVqVWkl5YcGzrobUJvXC7vaiQZpPdtEmF2upuShBSQbeJyYCQyEVbWjBW42EK1IAKAiqCQOU0Aw7g7MXIrCOgjO8c1vb/SSZkZp55/g/y85n3/KosFoulzQxXTdA3AsMWhJiQjwoCvGHBNND6gartrsVyttfTwxJPo1WB4HPFZH0yxw8WTbemS4iJ9I1AvRFumeGyCbx6h61vSHjEZAR4W7M... | 2 |
math | pre-k | count-sides-and-corners | true | false | Which shape has 3 corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAICElEQVR4nO2dz2tcVRTHv2/mJW8SMzZmbKZpjP1BE7EuXRRcKIgouHWnGxEE/xZbcNFFF6XgorpSWkproYVAXWRRajehkBoplC4yZkwzncwk6eS9PBfTkWBf0pnkzflx3/nswiS5h/s+896955w748VxHFdawF/rwFoEhDEM48D4HlDMA9PDQHkQ8CrP4/hunTssw2XOvA74i+vtHyYGgXdea1toGAdlLQIeNoGlFvDnOpCrh+0XTDIjTYr5tlMA0IiAXLTjBcN... | 1 |
science | grade-2 | compare-temperatures-on-thermometers | true | false | Select the thermometer that shows the higher temperature. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAI4AAAFICAYAAACGO8YVAABDcklEQVR4nO19a5Qc1XXud6q7Z6Z7NNJMj9BjJGFLGo2ERhKSABkINphnbOwVwBhjO4mwHYyvfX/gmywnv+6P/Mm69/o+4hU/cOIkrMixwSzsZTBgFIQcGyRsQKCnESMBlmZGAs+DkWZ6Ht1V90d1VZ86dZ716O7B2muJw9Sur86j9v7O3udUVRPHcZwzs8DAFHCuApQdXJALEpIsAToywLoCsLQFIGdmHOfXE41u1gWZT/KBhUD29Sn3j+UtwPp216ouyAVh5Vw... | 0 |
math | grade-8 | base-plans | true | true | What does this object's base plan look like? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAB/CAYAAADVVbV6AAAX00lEQVR4nO3dfVTUh53v8Q/iIldBJgYTBFomMQ/qapyeYqO2G7GnSRM5QUz1VuMm4LbWNO1eBtdkc/ZWGeP29JxgHMxtVGKyON6LxatGY49Y99gwqQ+FhI0/q6ImqBMlOBU2HR6DLMj+MZlpTJSgzAOD79dfcXj4fc1fn/M7H7/fqJ6enh4BAAAACIgh4R4AAAAAGEwI2AAAAEAAEbABAACAACJgAwAAAAEU9oDtcrk0c+ZM3XbbbVq7dm24xwEAAAD6JSpcW0Q8Ho/... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA3gAAAB/CAYAAAC9g2BrAAAceUlEQVR4nO3de3SU9b3v8U9ITHIglwGDhJA2I3gBCmV6GuTSC5NWayXLEKxsQbZNaItQ27MTKFrXbiGDbHfXMsgETwtEbMOwTxQOlyAeYmmpGeXSgKkMFQJohBFCiCTFyQ1DmpDzxzizRREDmZknCe/XWlnRmWee54PMH37W7/s8v7DOzs5OAQAAAAiIsLAwoyPgBtbP6AAAAAAAgMCg4AEAAABAH0HBAwAAAIA+goIHAAAAAH2E4QXP7XYrLS1NAwcO1MqVK42... | 1 |
science | grade-6 | identify-rocks-and-minerals | false | true | A horseshoe crab shell has the following properties:
mixture of proteins and other substances
solid
naturally occurring
body part of a marine organism
no fixed crystal structure Is a horseshoe crab shell a mineral? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAABY9ElEQVR4nO39eZCl2Xneif3O8m13z7Uya6/eu9HdQHejATQBAVzFXZRFhybGlmYcdoy3PxRyWGOHPbbD4Qhv4XDIy4xHMxPDGVmUZFlBiTtICBRBggCIHY1u9FZdXXtVVu55t2895/iP892btwqNbFBkE6T8PR3Zlctdvnvvec67Pe97hHPO0aBBg3eF/EFfQIMGf5HREKRBgxPQEKRBgxPQEKRBgxPQEKRBgxPQEKRBgxPQEKRBgxPQEKRBgxPQEKRBgxPQEKRBgxP... | [
"yes",
"no"
] | null | 1 |
math | calculus | identify-functions | false | true | Look at this graph: Is this relation a function? | "iVBORw0KGgoAAAANSUhEUgAAAQ4AAAETCAYAAADH+ejgAAAVpElEQVR4nO3dXWxT5+HH8Z9DaQJpk6wdJF153WgSpbROBLSJkFiLNK2BZhNMe1H/SySq9WLadrFq0rRddExdq1WCbRKwaZrE1KQXY5UmNDq1GhKpJk0J7aI4kKKgwT8vVCUx/5YEcOIQbP8vItvnOM7LsY99zrG/n5s6x8dPHkLz43k9jy8Wi8UEABaUOF0BAN5DcACwjOAAYBnBAcAyggNphcNhhcNhp6sBlyI4kFYgEFAgEHC6GnApggNp9fT0qLe3d9H3jx8/rtb... | [
"yes",
"no"
] | null | 1 |
math | algebra-2 | domain-and-range-of-absolute-value-functions-graphs | false | true | What are the domain and range of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABocklEQVR4nO3df3xU9Z33/fdkJr8TSEggwUiCgKDBBEVBQVBcrbra2kK3i+29bd26d9duf129Hnevu3fvbq/uPnx49d7d7l51bbfrXm3V69770avuqlvRSLGgUKggEYIJCCFiSID8mPycyfw48+Pcf9CJBAhkyPlmZpLX8x+dYc47n5wzc+YzJ+czx2Xbti0AAAAAjshKdQEAAADAdEKDDQAAADiIBhsAAABwEA02gDGqqqq0Z8+e0dsnTpzQ3Llz1d7ensKqAADIHDT... | [
"domain: $\\{x \\mid x \\geq-5\\}$, range: $\\{y \\mid y>2\\}$",
"domain: all real numbers, range: $\\{y \\mid y \\leq 2\\}$",
"domain: $\\{x \\mid x \\geq-5\\}$, range: $\\{y \\mid y \\leq 2\\}$",
"domain: all real numbers, range: $\\{y \\mid y>2\\}$"
] | null | 1 |
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 volume will be true? | "iVBORw0KGgoAAAANSUhEUgAAAB4AAAAOCAYAAAA45qw5AAAA7ElEQVR4nOWUIY6DUBCGP8qK14KFC4AH2ys8h8WBBsERSC9QR6+AJiFBIUgQIFCc4XGINtThNruILWJ/N8mXfDPJzGjruq4ckNMR0k08TROu65IkyefEfd8TxzHX6/VjUoAv27bpuo77/c6yLN+CQRDg+z7jODLPM1EUcT6fqesapRRlWeJ53q+5k+u6mKb5Y4e6rjMMA1VV0TQNt9sNy7Jo25YwDCmKYhe3a7mklGiahuM4PJ9PpJQAOI6DUmoXt0tsGMY2FcDlctn... | [
"The new volume will be\n1\n8\nof the old volume.",
"The new volume will be 2 times the old volume.",
"The new volume will be 8 times the old volume.",
"The new volume will be 64 times the old volume."
] | null | 2 |
math | grade-4 | interpret-stem-and-leaf-plots | false | true | Kendrick counted the number of desks in each classroom at his school. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACOCAYAAAALm3/GAAAnCElEQVR4nO3deVzU1foH8M/ADMvIKqCsAoaAS6ApuOOCK2HgSnY1qUC5gGLLLRXvFbLcyqwrpom5Fpai5ZKKSphioliIqCWggojgkrIJiMOc3x/+mOKyOOrIWH3er9e8xDPn+Z7nfPGPZ47ne0YihBAgIiIiIiKN0NF2AkREREREfyUssImIiIiINIgFNhERERGRBunExcVBIpGoXjo6OrCwsMDgwYPx+eefo7a2VuOD5uXlqcYrKSnR+PWfRsHBwZBIJJg5c6a2UyE... | [
"2",
"4",
"3",
"1"
] | null | 1 |
math | grade-8 | apply-multiplication-and-division-rules | false | true | The number line shows an unknown number, x. Is x 5 positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAGF0lEQVR4nO3dXWhTdxzG8eekzcsay4zOtLto6RgD6XROjbHVwsrGYOAE44ThjfNKqHixi4EXu9mFCF5uKJsgDAQ7B6M6nLCxjRk7RpIaO7dg9wZ27Rh9QWu2xiY5abML12ixb9Ikpyf9fq56Tv4XD5wTeDj95X+MfD6fF2BjnZ2dMgxD+/fvtzoKyoRrDgBYzqqtDgAs1eDgoNURUGZccwDAcrbogm2apuLxuKLRqPx+P0+OAMCGMum8vv0qqeTdnAb6s/LXO1VX71R... | [
"positive",
"negative"
] | null | 0 |
math | kindergarten | flat-and-solid-shapes | true | false | Which shape is solid? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAKYklEQVR4nO3dT2zb5R3H8Y/j2HHiJnGbNikFEgqlhYkGMTqVSSM5gDY0bWjSEKqmiZ2qTZq0w7TjJDRt6mVI5TRp11bsMNgO2Q1VoFaTChVlStFWTOmgxW2TlJA/jh3HsfvbwbVJoEuT+M/39zx5vy4o1HEeCb31tR9/UyJBEAQTRenjvJQtS6VAAJqkPSJ1R6WHu6SBuBSZWAqCc/PWxwK2nsM9UvulfOWLe+LSgWSlTgDNkS1L6Zx0oyh9lJfa5kuVPyA+oPm... | 0 |
math | grade-8 | transversals-of-parallel-lines-name-angle-pairs | false | true | \line{HJ} and \line{KM} are parallel lines. Which angles are corresponding angles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD2CAYAAADs6vBqAAAcYElEQVR4nO3df2xVdxnH8c/tpVwGbO1kOKAUy6T8WMv40cuAjXlLiwGMtID7Y/7jKMQlDgfVSBaj5aeZRpdZYMYEQumSodEove1iYJnQNmOBkJ5SwIZRZlugZDEI7R2IXMtd/WO2UnpvKdxz77nnnvcrIZHzhZ7n+2Qmn519z3lcPT09PXKgrq4uSVJ6erqlddgV/QMAAAgvxeoCrFJZWanKykqry7At+gcAABCey6lPsLOysuRyudTW1mZ1KbZE/wAAAMJz5BNsv9+... | [
"\\angle{JIG} and \\angle{MLN}",
"\\angle{JIG} and \\angle{MLI}",
"\\angle{JIG} and \\angle{HIL}",
"\\angle{JIG} and \\angle{HIG}"
] | null | 1 |
math | grade-2 | fractions-of-a-whole-modeling-word-problems | true | false | Amy's family is moving, so she needs to pack the dishes. Dishes break easily so she must wrap them up. She cuts a sheet of bubble wrap into 2 equal pieces. Amy uses 1 piece to pack salad bowls. Which model represents the fraction of the sheet of bubble wrap that Amy uses to pack salad bowls? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUgAAABKCAYAAADZq82MAAACAklEQVR4nO3cP04UcRjG8Wd2gQJBqTQeQD0CrVeRg8FVqLkBai92hD+bgGzGYsXYPDFLILvJfj7dZPJL3uo77xQzwziO48V98n2WXM+ThzEAG2lrSPanyYfd5N1OMlzcjePZ1arHAlgvh6+TrW+zxcX7neTTq0U9ATbR9Tw5v01+3CdfZ8nk6mFxQxyBTbc/XbQwSW7myWT+zw2ATffYwl9jMlntKADrSyABCoEEKAQSoBBIgEIgAQqBBCi2lj1weTS8xBwAL+7... | 0 |
math | grade-1 | subtraction-sentences-using-number-lines-up-to-10 | false | true | Which subtraction sentence does this model show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABhCAYAAADsidaRAAAWGElEQVR4nO3dfVBTV94H8G94kyIQUEFllxKxA1ZLwZcK6HZRO1q7fVHbSrXjFNq1du123Oo+jrXtTrVlV7vdtjp1p1PbZ9baFkfFgrVdR2dUgs/yKoKuMupWDEgDrgFDE16ESJ4/rjcQQCFw4d6bfD8zmSQ3mfR3muD55uTcczR2u90OIiIiIiKShJfcBRARERERuRMGbCIatCYb8EM1sOI44Ps5sLlU7ooGxl3aQURE8vKRuwAiUr+sSuC1/wM6ANhUPOnMXdpBRET... | [
"6–2=4",
"10–2=8",
"6–6=0",
"7–5=2"
] | null | 0 |
science | grade-8 | 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? | "iVBORw0KGgoAAAANSUhEUgAAAbAAAAEVCAYAAACBn7B3AABrzElEQVR4nO19d5zcxN3+M9rd271+7gWffWfjbtNNNRBMjE3HQEICITF5gcQ/SsAhBGJSgNBCqCFACAklIQ3TktgxxQHMG5oxOLxgg8Hd54rL1a3S/P6QZjSj1e7t3u3erXTzfD72aUfTJM2j7/P9zkgilFIKBQUFBQUFj0Hr7Q4oKCgoKCh0BcqAKSgoKCh4EsqAKSgoKCh4EsqAKSgoKCh4EsqAKSgoKCh4EsqAKSgoKCh4EsqAKSgoKCh4EsqAKSgoKCh4EsqAKSg... | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | null | 1 |
math | grade-5 | identify-parallelograms | false | true | Is this quadrilateral a parallelogram? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAjKUlEQVR4nO3de5CU9b3n8U8/0/30TIPYXEcc7giMIwgMIAwgRtFoxBsxRi5eYqVqq1Ix57ipzXE3ezxb55itHOuc8pis2WzV1lkvHAQlhiR4i5cYQBAF5CY4yB1E5CYDzDTdPT3Ps38g/WsE59r99NPd79df/Qz9dD/dM398fj++z/cbcF3XFQAAAICssPJ9AQAAAEAxIWADAAAAWUTABgAAALKIgA0AAABkEQEbAAAAyCICNgAAAJBFBGwAAAAgiwjYHfDjZ5r0s0V... | [
"yes",
"no"
] | null | 1 |
math | grade-1 | select-two-dimensional-shapes | true | false | Which shape is a triangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJAAAACVCAYAAAC3i3MLAAACaklEQVR4nO3VS24UZxiG0a/bl4GBMAvJAoDsgB2wJBaRJWUJrIDbPM7UBks4bhWDEhITFFqPrKajc0ZVqvqld/CoarMsy3J5O/PhZuZ6N3O3DHzX6Wbm0cnM04uZJ+czm8vPy/L66tCzOEYvfpk5fX+z3vx+PvP8wVoXfM/1bubtp5m/b2fe3cxsr+7WB+LhRzw6WVuZmfm4m9nuvnkAP+JrK/8uM9vDTuHYCYhEQCQCIhEQiYBIBEQiIBIBkQiIREAkAiIREIm... | 2 |
math | grade-5 | median-find-the-missing-number | false | true | Rafi has the following data: If the median is 43, which number could n be? | "iVBORw0KGgoAAAANSUhEUgAAAVoAAAAkCAYAAADIDvJzAAAIS0lEQVR4nO3de1BU5xnH8e/uwiKLCKJcFQXxFjDa0UQxFYyaSaNoNKamamJtHdPERBttapuaTGpzs4nWOjGxjGaSxmnHaGKikQYr1WpERY3xxjCwXkBRy1VEQWBvp38QUILKAc5ZTu3z+c+XZ31/876vjwfO2cWkKIoC4FIc1Lqv41HcgIIQQoi2MGE2WehkseFjstaPKIqi1LmrqfPUdHA4IYS4u/iZbfhZbJjdilOarBBC6KDOcx2X4sRc577e0VmEEOKu5XBfx+x... | [
"47",
"31"
] | null | 0 |
math | kindergarten | more-or-less-likely | false | true | On which color is the spinner less likely to land? | "iVBORw0KGgoAAAANSUhEUgAAAbEAAABkCAYAAAAIVA6ZAAAQ5ElEQVR4nO3de1iUdaIH8C8KODDAvAN4RZCblhdCZryQFy5hF6x0z+IGeE33aauns6e75Xqqs+22ttpaPfu4T2Vpm6JYe0672Z7avCHumqkzgIoW90sCiTovMMMMgnD+OFkal2CY933nZb6ff3xght/vO//4fd7f+5vf69XV1dUFIiIiFRqmdAAiIiJnscSIiEi1WGJERKRa3koHcIbN1gqxSYRoEWERRTSJIgBAJwjQCwIEvQBBJ0Cr9Vc2KBERScrLnTd2NDY24p8... | [
"white",
"blue"
] | null | 0 |
math | algebra-1 | linear-functions-over-unit-intervals | false | true | How does f(t) change over the interval from t=
–
3 to t=
–
2? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABx6ElEQVR4nO3de3xU9b0v/M+aW+4hIYEEgwkCigaSAHKRmySAgmJtofVge1oLotbuXs7p83p2H1/dPX12ezxu99N296nbeqyKt326H7ecoq1gQCAXYqhEIgQSEGOAkARymWQymfuambWeP4YJCbfMwPplzSSf9+vlq02Y+eSbtWbWfOeb36wlqaqqgoiIiIiINGHQuwAiIiIiorGEDTYRERERkYbYYBMRERERaYgNNhENU1FRgWnTpmH9+vUAgK985St47733AAAXLlz... | [
"f(t) increases by a factor of 2",
"f(t) decreases by 2",
"f(t) decreases by a factor of 2",
"f(t) increases by 2"
] | null | 1 |
math | pre-k | count-scattered-shapes-up-to-10 | false | true | How many stars are there? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAGYCAYAAAA3PpYkAABQiElEQVR4nO3daZBc93nf+9/p5XT3dPd0T0/3zDQGBGe4WaY22CAFOVRomtGlQlPULm5SRLkYWhJJixZlOSo5sS1ZDG24XLFTFasUJX7hSjkVXyZ2pKRSTm7lln1jEguxEFwkwSQhmARBEgMQ0/t6zn0xHBAYzNLL6e5zTn8/r0jMYPjnTE+f5/+c33n+hm3btgAAAAD4QmDUCwAAAADgHAp8AAAAwEco8AEAAAAfocAHAAAAfIQCHwAAAPARCnwAAADARyjwAQAAAB+... | [
"9",
"4",
"10",
"7"
] | null | 2 |
math | grade-2 | compare-clocks | false | true | The clocks show when some friends went shopping Wednesday after lunch: Who went shopping last? | "iVBORw0KGgoAAAANSUhEUgAAArIAAACZCAYAAADTjdlcAAAfrElEQVR4nO3de3RTdb428Gfn1iZpm7b2DtJWnAplpFwsN5VRBx1kvCIzjrqQg44eWQcXOKLinFFunnnXjNBX18sMrjniC15gZgBFFJHj4SIggxekcKSAI7QFpKWUXnNr0iTnj0rS0CRNdvZOspvns5ZrJTv78m3Mw/7unV/2FjwejweUkOo+bMKXS7+TbH31tpOwus2SrCuvOAdPfPQLSdZFpCTMJVHiYS6TlyreBVBwR//zTLxLCKqpvhl1X5yLdxlEMcdcEiUe5jJ... | [
"Hunter",
"Karen",
"Patty"
] | null | 1 |
math | grade-1 | subtraction-sentences-up-to-10-which-model-matches | true | false |
Which picture shows 5 − 3 = 2? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARIAAABKCAYAAAB3ndsNAAARgklEQVR4nO2de3Bc1X3HP/exT+1KK8ky2JZtgREYhI2J8UMkKYYJhDShwMB40pCHIG2mf6Rp2nTSpuk0/aOPPzKdYTpNO5M/GpFAJjBJgBQ6SWiDoRBLIiayDfFD2JZsWbIsad/P+zr940q7WkmWwKuV5PX5zHi09+455/6+nt/93nPPPXuuIoQQFwx4LwspGyyBRCKRLIiuQFiD9iBc4wXlQkGIvuRKhyWRSK5U9tSDPpB1N9Z54aY612UkEolkIVI2nMjAqAE... | 0 |
science | grade-3 | identify-properties-of-an-object | false | true | Which property matches this object? Select the better answer. | "iVBORw0KGgoAAAANSUhEUgAAAKwAAADQCAYAAACa0YpiAAA2q0lEQVR4nO2dd3xb5bmAn6Mt2ZIsy5YteY8kjmMncXacBMIegbbshpHSUigtdHLb0gt0XmgvLbf3FmhLGYWGESCUAgkjzOzpTNvxiPe2ZcuWZG2dc/+Q7QQKLSQOjpzz/H7nZye2db7v+PGn97zf+31HkCRJAggEAnR1deF2u4lEIsjITDQqlQqTyYTdbken0wEgSJIk+f1+GhoayMnJQafToVarJ7ipMjIQDocJBAI0NzczZcoUdDodgt/vl+rr6yktLZ3o9snIfCK... | [
"shiny",
"flexible"
] | null | 0 |
math | grade-3 | choose-the-appropriate-measuring-tool | true | false | Which tool would you use to find out how heavy a bag of sugar is? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJYAAACnCAYAAADzJ6XqAAAbKUlEQVR4nO2deXRUVaKvv30qU01JyEgFSBgkIFMgjALiDDxFrsuhvTTNVbn30r5le3ku7dUu7bdWd6ut94naioqKgqAg4HsgwQEFQWxAwhwCZiBkJjOZqlIQkqr9/jhJkQIUUCpVFfa3FutQJ/vUOSd8/PY+++yzj5BSyqqzUOAEuwvaJQrFFRMiwGqAwSZIDANR1Srl3mZ/H5aiJzExEkKOO/UPtjAYYtatUyiuFLsL8lqg8izkO0Frbtd/oKRS/BqsBt0hAIc... | 3 |
engineer | grade-7 | identify-the-experimental-question | false | true | Identify the question that Brenna's experiment can best answer. The passage below describes an experiment. Read the passage and then follow the instructions below. Brenna planted 25 tomato seeds one-half inch below the soil surface in each of six pots. Brenna added an equal amount of fertilizer to three of the six pots... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAEICAYAAAA0p80lAAEAAElEQVR4nOz97ZIkWZKeiT2q5xwz94jIzMrq6pqejx7MArskF8ACgv3gCkGhcEV4A5S9DdzLXsneAH/udZBC4X5gZnq6u6oyMyLczewcVf5QNXPPrOrB8AfQRRFYSVRERnh4uJvZ0aP6vq++Kv/m3/wb5z8e//H4j8d/PP7/6Pgf/of/4Y/ydyvA/+Pb/5F5nnl8+8Tbt285Pz4wTROFhrrCIuhW0a1QlwZLwS7OeDF4VfrvNsaLcXl54fn5mefnZy6XC9uyMsbAzAA... | [
"Does the humidity level where tomato seeds are planted affect the number of tomato seedlings that grow?",
"Do more tomato seedlings grow when they are planted in soil with fertilizer compared to soil without fertilizer?"
] | null | 1 |
math | grade-7 | perimeter-and-area-changes-in-scale | false | true | Look at this square: If the side lengths are tripled, then which of the following statements about its perimeter will be true? | "iVBORw0KGgoAAAANSUhEUgAAAB4AAAAOCAYAAAA45qw5AAABaklEQVR4nOWUvcriYBBGT6KNWmhjKQSiCAZR8Aas31SiIAgWqRRTeQli502ksLK0EVKIgqV1DF5BRBBtxZ/5uoVlP9iVxbXYpxs4cB6YYTQRET4Q/RNSAP18PtNqtcjn8xQKBSaTyb8xu64r/X5fREQul4sYhiGr1Urenfhut2MwGACQTqep1WqEYUi9Xv+pYKPRoFqtst1uCYIAx3FIJBIsFguiKGI2m1GpVP6YYzweS6fTkdvtJofDQQzDkCAIfmnYbDZFKSXP51P... | [
"The ratio of the new perimeter to the old perimeter will be 2:1.",
"The ratio of the new perimeter to the old perimeter will be 4:1.",
"The ratio of the new perimeter to the old perimeter will be 1:2.",
"The ratio of the new perimeter to the old perimeter will be 3:1."
] | null | 3 |
math | kindergarten | represent-numbers-with-pictures-up-to-5 | true | false | Which shows 4? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAA9H0lEQVR4nO29W2xc13m//azD3nPikJyhSIqUqEiWJVsybDl10rQuWqOHpC2aFCjwpQ3auyIp0F41/W6+qwANelP0Irlu0QQtclEURYG0Sf9B+0cQo00cp3VqVbFkS9bJlng+Due0916H72LPDEmJ9IGyOyRnPwBBaWYP117D+fFd613vQXjv/XwMbzZh04LxZGRkfEhoAWUF54owGYKYj7z/Ua3ft5WRMXh8Yhj0jWb6n6kQniil6szIyPhw2LTwRgPmYrjeBFk... | 0 |
math | grade-7 | transversals-of-parallel-lines-name-angle-pairs | false | true | \line{PR} and \line{SU} are parallel lines. Which angles are vertical angles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADSCAYAAABw17dKAAAchklEQVR4nO3df1BVdf7H8ddFBEkaIG6KWAuBlWHmLanA2gVWqu3HJthWu9DmrbbJWleu41b2261pW3eb7Vq76c5ke9mJZq1dubvpNJkklBqrQOAP2pnUbmylJXhvmygYwfePvrIaoALncu499/mYuTPt/cjnvHemM715+znnZevp6ekRAAAAAENEmV0AAAAAYCU02AAAAICBaLABAAAAA9FgAwAAAAaiwUZI6unp0cqVK/WDH/xAqampiomJUVpamubNm6e2tjZDr7V... | [
"\\angle{RQT} and \\angle{PQO}",
"\\angle{RQT} and \\angle{UTV}",
"\\angle{RQT} and \\angle{RQO}",
"\\angle{RQT} and \\angle{PQT}"
] | null | 0 |
math | grade-1 | count-sides-and-corners | true | false | Which shape has 5 corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAHeklEQVR4nO2dT2tUVxjGnztzJwyjGZW0GYxTE1qTQgMqRBrssp+jG+kX6KcQ3GUtFDdd+AUs4iIbRUHcCIFijS6KNJFAxczkaubf7WKMxGKNc+55z3nPuc9vp8mY65zfnOfmuefek+R5nm/3gM0M6AyBQQ5CCpMmwHQVWGwArSkg2d7P84e7vg+LxMxqE0ifZuM/nJ4Cvj02tpCQonSGwJM9YKsH/JkBld3B+AuUjNhkujp2CgC6Q6AyPPQFQmxy4FQ/Byp+D4W... | 0 |
math | grade-1 | comparing-review | true | false | Which group has more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMwAAACGCAYAAACR4WX4AAAWOklEQVR4nO3daXAk52He8f/b3XOfGAwGwOBYAIvFsbvc5aklxZJIxpJdVCgrlos05bgSybFEM6kkZiWKKqmUJbuiOEmVSlISyTTLjqsiMTIlO5LJFZOyKYoSyZjkkntwD+xicR+Dc+57po98GO6KKy5FjQhiMDPv7wtqd7qB931Qz3Sju6dbWJZlrVdgpgBZA3QLSZLeoAnwqXDADd12EOtly3ol0+hhSdLed8wP2uVC7R+9dhj31NokSVJN1oBLeVirwHQBlIx... | 0 |
math | calculus | identify-functions | false | true | Look at this graph: Is this relation a function? | "iVBORw0KGgoAAAANSUhEUgAAAQ4AAAETCAYAAADH+ejgAAAZ+klEQVR4nO3dfVRT9/0H8HeAEEh4spZATx80Vic/oIJDEdff8Wf8nbZjhe24B9k/ek457Tl2k79qW/fHcNV1p57W/VM6tz8mnXYPuJ3Nc8RjZ3eMx015qM5gQWOrTdD+VoRWA5iQ8JTfH2kuXAjKNyS5Nzfv1z+N4ebmWyBvvk/3fnSBQCAAIiIBKUo3gIgSD4ODiIQxOIhIGIODiIQxOCgsn88Hn8+ndDNIpRgcFJbdbofdble6GaRSDA4Kq62tDe3t7XN+vampCdX... | [
"no",
"yes"
] | null | 1 |
math | grade-2 | cubes | true | false | Which shape is a cube? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAASlklEQVR4nO2da5Ac1XWAv9s9j93VipV2gZVARCayeBuZRwzYZcfgwqZ4mB/GjgKJKVelUq5Q5R+u5IeTuFKuUHmnRKryI04cV9nEBNsQxWBiBWIwDrExMkiyZRVC4qEXWj12V9rHaF59b370PHp2Z7UzPT3Tt0fn+zMz3bf7np45c/vcc06fq4wxZqII+3Mw60HZIAjWkVKw0oWNQzCeATVRMOaVmbjFEoTWuek8SO3L+R/WZuDyFb5WC4JtzHqwdx6OFuGNHDg... | 0 |
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? | "iVBORw0KGgoAAAANSUhEUgAAAQQAAACgCAYAAADq8hJGAAAZsklEQVR4nO3deXxU1d3H8c8smewhK1lISFgTdgQDKAhFQQFRUbG1Su1TrdZWLVq1VSpqFVzrglKttaJtxQUURQFZREB2whJiAiEQQkjIvpF1ZjIz9/ljwo1xAiSQ5E6S3/v1QsO525k5wzd3zjn3Xp2iKApCCAHota6AEMJ9SCAIIVQSCEIIlQSCEEIlgSCEUEkgCCFUEghCCJUEghBCJYEghFBJIAghVBIIQgiVBIIQQiWBIIRQSSAIIVRGrSvQFmosNby89jU2H/l... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAiAAAAC4CAYAAADaI1cbAAAk7ElEQVR4nO3deXxU5b3H8c8smWwkkAUS9n0XUJBFUdC64UKLVr222t5brVZrrVq1tVa0V3G3danVbi631baKSy1oRVxAdhCEmLCEnYQsZCV7JjNz7h+TDIQESGByzpnk+369NHBmOU/yHL75zZnfecYBGIiIAIZhUOCFHTVQ6Qef0kFEwsTtgAQXDI+DNA84UAEiIo0K6g3WVlg9ChHp7KYmgtvqQYiIfWyvCX7t7YGR8cFXKyIi4VDph23VkO+F7BpwWj0gEbG... | 0 |
science | grade-7 | use-data-to-describe-climates | false | true | Which statement best describes the climate of Sydney? Hint: Summers in the Southern Hemisphere occur in December, January, and February. Winters in the Southern Hemisphere occur in June, July, and August. Sydney is a city in Australia. It is located in the Southern Hemisphere. It has a humid subtropical climate. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAALOCAYAAACTXGSDAAEAAElEQVR4nOzdd3yV5f3/8dcZ2QnZg5CEkBASQiAJKxCWgCCKgAwHdaHWqq2VWm1rrf22X22tv7ba1tV+7RBHWxUFgTBUEMJQwjAhBBJIQiYrIXueef3+COeQmIBBTnKCfp6PB5rc5z7n/pxz7pzzPte5hkYppRBCCCGEEEI4hNbZBQghhBBCCPFNIgG7j2RmZqLRaNBoNIwdO9bZ5YhvoVWrVqHRaEhJSXHI7b3zzjvMnDmTsLAwXFxcCAwMZM6cOezcudMhtz9p0iQ... | [
"Winters have lower temperatures than summers and there is more precipitation in the first half of the year than in the second half.",
"Summers and winters have about the same amount of precipitation but summers are colder.",
"Winters have higher temperatures and less precipitation than summers on average."
] | null | 0 |
math | grade-3 | identify-parallelograms | false | true | Is this quadrilateral a parallelogram? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAB9CAYAAACYnRRxAAARxUlEQVR4nO3d/29Udb7H8deZTttpmX5vpwUR/HJRMVuDXCGXJvReuLHEusKCXnC5cpGvBSTFH+4fIg3LV1G5uHVlFRfI1gAJJJBAAhslshGVxS/ICp1+oV+Gfp8594fTzvRYEU6Z9sxMn4/fPifWvsWPyfPM+TjHME3TFAAAAIC48Lg9AAAAAJBKCGwAAAAgjghsAAAAII4IbAAAACCOCGwAAAAgjghsAAAAII4IbAAAACCOvPfzF316rF03b/TJl2WM9TxIcb09pop... | [
"yes",
"no"
] | null | 0 |
math | pre-k | count-pennies | false | true | How much money is there? | "iVBORw0KGgoAAAANSUhEUgAAAPwAAAA/CAYAAADE16V9AAA22klEQVR4nO29d5Sf53Xf+Xn7++tleu8zmMGgd4AAq0RKokiZki1LVqxdO7biEif2iXc3cc46a2dz9uxuNrGTtXNkWVaxLUWWqEJSlAj2gkr0OgAGA0yvv17e/uwfPxC29lASQFKSCc4XBweDwQHwft77u0+5z733kYQQglWtalXvCck/6wdY1apW9dPTqsOvalXvIa06/KpW9R7SqsOvalXvIak/jf/EtaqUy2Vs26JaLuM5NpXMAo4vUFUVI54iHI4QjcXRzRCRWBR... | [
"4¢",
"6¢",
"5¢"
] | null | 0 |
math | precalculus | outliers-in-scatter-plots | true | false | The two scatter plots below show the same data set. Choose the scatter plot in which the outlier is highlighted. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAU4AAAFGCAYAAAAFAHYEAAApj0lEQVR4nO3dfVAUd54/8HfPCAw6M8j4VBGJVBz0IItmJQ4hwTpN7U7MXlJbyS8P5PkW3E2OrMa9rbjJlVuyXs6riZ618emilyyVug27GjcmZiuJSd1puFMcJsX5BCYBzrkoZgUdEDvSzAD9+6Olw8MM0Dg90zDvVxUF/Zl2vt8h+s63u7/dX0GWZfkvQaDxGnC1B+iWQURE/UwSAJsZyJ4MzEoGhL90yXJNR7y7RUQ0PhTYgUkN15SNm5KBBVOUVCUiou9c7QG... | 0 |
math | kindergarten | more-or-less-likely | false | true | On which color is the spinner more likely to land? | "iVBORw0KGgoAAAANSUhEUgAAAbsAAABkCAYAAAAfdp5QAAAQWElEQVR4nO3de1STZ4IG8CdySwiQLwgqKqABtXgDE29THMVS23oZPdtuBa33dbfTs8ft1a3TzpnpmZ2zOrUzs3t2OtNZuzqrgtg62+vZdq0CYketmiA62A5yExStiPmAhIAI2T+6uLUkmMB3CeT5/eMxX3jfJ3895/0u76dxu91uEBERDWHD1A5AREQkN5YdERENeSw7IiIa8kLVDtAfTmcbxGYRol2EXRTRLIoAAIMgwCgIEIwCBIMAvT5S3aBERBQQNIF8g0pjYyM... | [
"white",
"blue"
] | null | 1 |
math | grade-4 | identify-parallelograms | false | true | Is this quadrilateral a parallelogram? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADnCAYAAAAkYCFUAAAiKElEQVR4nO3da2xk9Z3m8eecup0q3+12l6tMd9O2uYdALjATmB0ysygvokhRpCjaKJsQciHQN2glQQwbMswSsa0Mme7QDSFkd1hmJ0Jis5tFQtEqy87CSqAVJIRbJ1xsN03jst1uu30pl+t+9kV313GV225fqnzq8v284vzlqvrRGPXjx/9z/oZt27YAAAAAlIXp9gAAAABAPSFgAwAAAGVEwAYAAADKiIANAAAAlBEBGwAAACgjAjYAAABQRgRsAAAAoIwI2Kg5868... | [
"no",
"yes"
] | null | 0 |
math | pre-k | one-less-with-pictures-up-to-5 | true | true | Count the teddy bears in this group. Which group has one less than the group you counted? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABmCAYAAADxjOYpAABR4klEQVR4nO3dd5wd2Vng/V9V3Zz7xs5RamWNsjQ5J+M8MzZrG2MWbAy2MZgXlmyWuKR9YeHFLMEYDPbigO01mLEZTw6aUU7drVbncLtvzvlWnfePK7VGI814ZGtGrZnz/Xxm1H2r6tSpU/3HU+c+9RxFCCGQJEmSJEmSJOmKUK92ByRJkiRJkiTpjUQG2JIkSZIkSZJ0BckAW5IkSZIkSZKuIBlgS5IkSZIkSdIVJANsSZIkSZIkSbqCZIAtSZIkSZIkSVeQDLAlSZI... | null | [
"iVBORw0KGgoAAAANSUhEUgAABOwAAAB+CAYAAACXpI7eAACnW0lEQVR4nOzdd3gd13ng/+/M3N77Ra8ESIC9U12iunuTHcc1Tuz459hx7GR3E2+c7GZjO2WTjddxmlPcYmdd4tiObdmR1Qt7B0CC6MAFcCtu7zPz++OSoCCSigolgtL5PI8EaWbuzJkzePGcee8pEqAjCIIgCIIgCMIVoes6i1UYK0JOhbpobQuCIAiC8CwMEjgV6LNB2NTYJiESdoIgCIIgCIJwxSxWdA5kr3YpBEEQBEG4Fu12QcgEhqtdEEEQBEEQBEF4JTl... | 2 |
engineer | grade-7 | evaluate-tests-of-engineering-design-solutions | false | true | Which of the following could Carter's test show? Carter had a cookie recipe that made soft, thick cookies. But he preferred crunchy cookies. Carter read that using different types of sugar affects how firm the cookies are. His recipe used both white and brown sugar, so he decided to see if the cookies would be crunchy ... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAE3CAYAAADBi3hdAAEAAElEQVR4nOz92ZNlWXbeif32dM65o0/hMedYmTWhBlSBBAEQZLMJUk2akRq6rWUmmsTWO/8HSX8Bn1qtdz1IJpMZ1YM1OAokiCZmFKpQc1VmVmZGZkRG+HzHM+xBD2ufe697RGYV2QSzZMZt5uE3rt/hDHuvvda3vvUt9Q/+wT9I/MfxH8d/HP9x/P/R+If/8B9+Kt9rAf53v/YSSim01ps/aK1R2mCMwRiHUoqkFUopSJoYI5FESgFSABJpx/QqpUAZAJKS/ytlUEo... | [
"if cookies made with only white sugar were soft",
"if baking cookies for longer made them more crunchy",
"if cookies made with double the amount of brown sugar were crunchy"
] | null | 0 |
math | grade-2 | place-value-up-to-hundreds | false | true | What is the value of the underlined digit? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAAiCAYAAABlRa5TAAAFz0lEQVR4nO3dT0hUXx/H8c+MBZp01RoMo3IxVhRmtZiCGsIWLVoUVhQRFbVoE40EQwxZMlKbFiVEf4wWURtJIQhSKwgKQYhC6I9S2L8ZEKfyTw2TOWPIfRbyO4/zOOYU4y97eL/gwj1nvvfec3YfLmfOddi2bQsAAABARjj/9AAAAACA/ycEbAAAACCDCNgAAABABhGwAQAAgAwiYAMAAAAZRMAGAAAAMoiADQAAAGQQARsAAADIIBOw+/r6dOLECa1cuVKWZcnlcmn... | [
"200",
"20",
"2"
] | null | 1 |
science | grade-6 | compare-thermal-energy-transfers | false | true | Joy was delivering two identical pizzas to a customer. While driving to the customer's house, Joy put one of the pizza boxes on top of the other one. This table shows how the temperature of each pizza changed over 15minutes. During this time, thermal energy was transferred from ____ to ____. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAABfCAYAAACdpLOcAAAhRElEQVR4nO3deVhTV94H8G8CJAQIi4BUS5WIsohIrYKiuFR8rTJ2HCluLa3a6ljLWxW1rVZrFdpx7PDM6zKOU5dqlRmXamtH66hUXFBwqWBBbakLFkVFAiIEAoEk7x+M1BggCYQtfj/Pwx/cc3LP75ybk/xyc+6N4M/L8rQgsgDTZrlhy3p5a4dB1K5xHhEZ54OPO7d2CET1ErZ2AEREREREZD5M8ImIiIiILAgTfCIiIiIiC8IEn4iIiIjIgjDBJyIiIiKyIEzwiYi... | [
"each pizza . . . the surroundings",
"the surroundings . . . each pizza"
] | null | 0 |
math | grade-8 | nets-of-three-dimensional-figures | true | true | Which net will make this figure? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAAReklEQVR4nO2dfVRTZ57HP6jjCwqJurigaNJVqiuOQK1WXVvi7MyI9EX2VKEc3SVaOWqrS7A6x3pOJbadimNX4tSubbcamJG+IB3U+la3NXHssSq1AStWFz0ECciBCiEgL4q9+0fMXai8JCGvzH7O8Q+e3Nz7yJf7e36/733u8yD8DbF06VIhICBACA8PFwwGg7e70yV4uwOe4I033hCGDh0qAJ3+qVQqob6+3tvd60S/FuTzzz8XQkNDRQHC/z5E2LnpZeHFxU+LbVK... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUkAAADICAYAAABlERNhAAAdvklEQVR4nO3dfXTU1b3v8fcIgjzkQW0oD9GEKyleoyYREGjxZOLpUYi1hApBFrRMWlw+FEniwV5kXU1oPYDVIwN6Dp4qZPCKRx4swVpATjXDwYUI2AwKVm9gEUmA3CAwJAESHpr7xzg/QWDIw8z8fjPzea3FmsWsyeydlcwne/9+e3+3DWhFLKO1tZW607DnJDSeg7P66YiEVVcbxHWBtJ7w/W5gQyFpKXUtrWxrMLsXIgIwPB66mt0JuVDVSd9jv24wuJfvL5q... | 0 |
math | algebra-1 | model-and-solve-linear-equations-using-algebra-tiles | false | true | Which equation does this set of algebra tiles represent? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABiCAYAAABqHaQ/AAAKeklEQVR4nO3dX2iV9x3H8c9zzonRnDValqRJ2irTsjYpG8Siq3Q3mxR0F25wXMntoOAu1l2FDkp3W5o7oUjGoFDKGG4avSocIsOuaWujaNBpsm5ElyzLn3OiJz1JzL/zPL9dWAMhwSb29+Qkv9/7BV48h8PzfnJzvt/Ayc/AGGMEAAAAwIpEuR8AAAAAcAkLNgAAAGARCzYAAABgEQs2AAAAYBELNgAAAGARCzYAAABgUarcDwBsFmGuU2am3/p9g3STknUZevToedw... | [
"3x+2=29",
"3x+9=30",
"3x+3=30",
"3x+1=28"
] | null | 1 |
math | grade-8 | parts-of-three-dimensional-figures | false | true | Look at this figure: What is the shape of its bases? | "iVBORw0KGgoAAAANSUhEUgAAAQAAAADSCAYAAACl8x72AAAhP0lEQVR4nO3deUDUdf7H8eccwHDKoSCioqaZV3Z4FJWWkmWbZVmCd+aRpoSav3bb7q12t1qV1N08KrU0wcrM1qOAMk0yzVIxzWNBVO5rBAaYYY7fHxOIqQkyMNf78VcNy8ybduY1n+/n8/58vgqLxWJBCOGWlPYuQAhhPxIAfyArK4u4uDh8fX0ZOXIk+fn59i5JCJtSyCXAxb7++msWLFjA1q1bL3g8KCiId955h5iYGDtVJoRtSQDUs3LlShYvXszhw4frHutz4zW... | [
"nonagon",
"rectangle",
"triangle",
"pentagon"
] | null | 1 |
math | algebra-2 | match-exponential-functions-and-graphs | true | false | Which graph matches this equation?
\[ y=-\left(\frac{1}{3}\right)^{x}-1 \] | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAVUAAAE1CAYAAABX+HN0AAAepklEQVR4nO3df3BU9b3/8dduEhISQlInP6iVHwErKeF3ekmwfomxQ/lxZaZgFWGwhaAdKXQ6tzh34E4Ve6dapoP80XIVqxaZ6xXw13hNFAElVB0TKIGl/LhBCkYKJiQqC5iQDdnd7x9xNwkJkB/n7Dln9/n4h92z55zPOznsK+fX53NcwWAwWNci/aNJuuSXWoMCAPRQvEtKjZO+myxlD5Bcdb5gcN9Fq8sCAOcrGCzFn2hqe/PtAdLolLbEBQD0zCW/dLxRqm2... | 2 |
science | grade-3 | 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 | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAADWCAYAAAAD8D2GAAAXW0lEQVR4nO3deXgb9Z3H8ffIsi05jk0OOwfkDuQg5CABUs6EI4RCOEtLodtujy29eAr0hHZp2W6BHlDKbg/os6UFdilQjhIg3AlQQlKuhKTEhBCOXE4c24kvybKs2T9+UhTZSiJH0sxI/ryeR08kzWT0M0Qfz3znd1hLd3TZyxujAFjYgIWISG7Y2Fhgw4lD/fhfaYzuFTEKGxHJJcukigUvN0bxJ85pJg/0cVJNKUPLFDoikhs7IzYvNXRR1xrDBnyJeFHYiEi... | 1 |
science | grade-4 | animal-adaptations-feet-and-limbs | true | true | European moles are found in many parts of Europe. They dig and live in burrows. These moles eat earthworms and nuts, which they find in the soil. The feet of the European mole are adapted for digging. Which animal's feet are also adapted for digging? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOydeZwUxf3+31Xds7P3LrvLfYjcKIciRgVBQaMQjcEIXqh4RE08o9F4fGMSY6L+ggYTryBqxKiJIV8vNMbz64mIHOKJiBwCci/sye5Md9Xvj6ru6dldYNH1iOnH17xwZnq6q6tqZp/61PN5PkJrrT3PQylFjBgxYsSIESNGjBgx/jMhpcR1XUQ6ndYxuY8RI0aMGDFixIgR4z8fUkpkTO5jxIgRI0aMGDFixPh2QCmF/LobESNGjBgxYsSIESNGjLZDTPB... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOy9d7htVX3u/xljltXL7uXs03uhFyEUwQZYEJXYo4ISYxKNGvmpGPOoROMTLFwNKhKNGuK9Bq96gyUgmtgQ6Qc4cM7h9LJ7W73MOcf4/THmXHvtcygHxaBmvTz7Oey1ZhllzrnnO77v9/0KrbX2fR+lFB100EEHHXTQQQcddNDB7yeklNi2jRDimW5KBx38QUJ2iHMHHXTQQQcddNBBBx38/kMphe/7z3QzOujgDxayQ5w76KCDDjrooIMOOujgDwO... | 0 |
math | grade-7 | parts-of-a-circle | false | true | What is \line{RS}? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADICAYAAACdx5VnAAAqdklEQVR4nO3deXhU5d3/8c9MZrIHkhASAlmAsIdddkR2FItAwbXg0kXRqg+2iq1W2z61/qyt0tpia1tbceFRKgWRRQTZkQhBtrATIAQIhCUJZGcmye+PJIcJhC2ZySx5v64rl+ecOTnnOzh/fHLP99y3qaKiokIAAAAAfILF3QU0BJPJ5LJr8/cRAAAAPEmjCPiEcAAAADQWZncXAAAAAMB5zCaTSWvWrLnihUGDBik2NvaK4xkZGTKZTHrnnXf07rvvymQyyW63u7z... | [
"chord",
"diameter",
"center"
] | null | 0 |
math | grade-1 | which-bar-graph-is-correct | true | false |
Amy went to a bird refuge and saw nine seagulls, eight ducks, and nine parrots. She made a bar graph of the birds at the refuge. Which is her bar graph? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAZ0AAAEOCAYAAABSLcpPAABnDElEQVR4nO3dd5zcVaH//9d82pSd7TXZbHpCCkkghQAhEBJIRHpTr6KIXxEQ21UQy8Xrjyv3olguolcFuVwQBREBESkiAqGYACEJEBLSk91sL1M/vfz++GwmxNA0ycxmc56Pxz6yM/Mp5wzsvOecz/mcEwmCIOi0YbMOWQ/cAEEQBEE4IJQIlMswKQGNGkQ6rSB4MVPqYgmCIAjD3fwKUDbp4YMRGhxRFiaSIAiCIBwIWQ/ezEOHDRt1kDJu+IIIHEEQBOFAK5f... | 1 |
math | grade-4 | elapsed-time | true | true | Look at this clock:What time will it be in 11 hours? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADICAYAAADSmpa3AABPDElEQVR4nO3deXyU5bn4/89MJjOTWZKQkEzCkoAkwVYggLIoi6IiomAXQFHbynFpf0dAsWdRW/ye9ogVe9oqKv2d7xE8aItCCdXKasWNpYIoYXOBhC0smUkIZDLPJDOTZOb7x0Mmmcxk35Pr/XrxSuZ+7ud5rgnzx5U713PdmkAgEEB0jKpi8OaBNx98F8DvhGoF/Ert17rfV5eCRgdRcaC1QJRF/VrzvcYMUVaI6gf6AWC4CvTDQNe/q9+pEEIIIYS4QiMJdltVgfe... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA7gAAADgCAYAAAApDMpcAABkUElEQVR4nO3deXxU1eH//1cmyWQySxIIySQsCUsSbGVXFCugtlJEpRtQcWnlU7X9ftztZ6m2+u2iVv182ioq/X2/34IfbOtWsVZxwYobYAW1bFIrJAiEJQsEksxMMpkkM78/LplkMpN9JpPl/Xw8eCQ59869Z+Kc+D73nntOAhBARERERESiIhAIUO6DkjpwNUOT0rZIzCQlgCMRCq3gNEMC6uCKiIiIiERNeUOAD2vjXQuR4efcNEiKdyVERERERIaS4jrja64... | 0 |
math | grade-6 | interpret-double-bar-graphs | false | true | Joseph, a birdwatcher, counted the number of each species of bird at the local county parks. Were there fewer sightings of hawks in Mountain Park or Northside Park? | "iVBORw0KGgoAAAANSUhEUgAAAVYAAAI2CAYAAAALs6BEAABG3ElEQVR4nO3dd1QUZ9sG8GuXKkUEBQUxojE2BMEGYsUCYom9xhJfVBJijCWWJCax5bVFg3xGI6KxJNhFBXuJioIVECzEXhDQoCAdBPb7w+O+riwrxpkdWK/fOR7Z2Z2d+2Hxcpjy3DKFQqEAEREJRi51AUREuobBSkQkMAbrKxYtWgQ/Pz+kpKS81Xo//PAD/Pz8kJWV9dbbvHbtGvz8/LB69eoyr/Nv6ty1axf8/Pxw4sSJt65RKP/2+yu28loXVVz6UhegDXPnzkV... | [
"Northside Park",
"Mountain Park"
] | null | 1 |
science | grade-2 | identify-solids-and-liquids | true | false | Select the solid. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAA8+0lEQVR4nO29eZAcV53v+zm51N5dvarV6ta+S5blfRU2WDIPs8yFh4EhDAzMDPOYgQgGJogXw8yEZxheBBEOv8sLE8BsmJjhAb73zn0sY4ZrDFiSF2xZsmzL2vfW0uq9q7v2zDzvj5NZlVndkrvV1d3VUn0Vpepc6uT2zd92fud3xJ5RKdfHoUGnjjrmFGM2HEnDxQI0G7CtSa3X6oSsY77QoMP6uPp73C6v1+qErGM+4fGvKMvrtPk5lTrquDzqpKyj5lAnZR0... | 2 |
math | grade-6 | nets-of-three-dimensional-figures | true | true | Which figure will this net make? | "iVBORw0KGgoAAAANSUhEUgAAAKYAAADNCAYAAAAyuwvuAAAPQ0lEQVR4nO3de2xUVR4H8G8ZYAQcishdsdLx0Tg60LJFzaAkkI3WtiYiJD6KQkLNluzDUiimBWtqDJuWgEotXXcX0FiTotRHAkpiS0eygaTqRBfWFgZrGrZTqLoXH+UizaXcmf1jdsbpnZbO4z7OPf19/oJ22vmd9JtzH+c352aEQqEQCGHMJLMLIGQ0pgSzo6MDHR0dZrw1sQjDg/nyyy+jsLAQhYWFePXVV41+e2IRGUaeY4qiiJycHEiSBABwOBzo7e2FIAhGlUA... | null | [
"iVBORw0KGgoAAAANSUhEUgAAASIAAADNCAYAAAAc231VAAAagklEQVR4nO3df3BU5bkH8O9mk6wk2QRIViCERYlEFogEtUvBhnJtCOAUYW6tAaGXMBfa2yvyqwPywzhqDRQtRMDeXgFHegeEgJ1CdUYw0XtHbKjbaUlJYCUkYDYQghuFZEPiJrvZ+8ey68nv7O455z3nPc9nxlE2P/Y5BL4+77PveVfn8/l8IERhdDod6xKIjKJYF0AIIUyCqKSkBCUlJSyemhCiQLIH0W9/+1vk5uYiNzcXb7zxhtxPTwhRIJ2cMyKn04n09HS... | 1 |
math | grade-8 | apply-addition-subtraction-multiplication-and-division-rules | false | true | The number line shows an unknown number, a. Is – 2a–1 positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAGXUlEQVR4nO3dT2yT9x3H8c9jx39wAiRaIaBC5MMqJkQVCMEkEQe206oIaUZw4MLYKrGBKPSyIVU90khoGlIrqMTENsSkCA4LTGzrVmmjhkNtBwfCMjLWraTQakAaidA4tmM7Tw+uDS5pyITjX2y/X5fIj3P4SH4UffL193key7ZtW0AF6+3tlWVZ2rVrl+koKBM+cwDAQlZnOgDwvO7evWs6AsqMzxwAsJDNuWCn02nFYjFFIhEtX76cyREAAJAk/e/htH7zQVIf3cv... | [
"positive",
"negative"
] | null | 1 |
math | pre-k | count-sides | true | false | Which shape has 5 sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGKElEQVR4nO3dz08TeRjH8c9Ay+4igibCBk/GZHdvXA0H/lcghIQDFy4c5MCFAx44cCGuTQwhxFZx0RaopbSzh9pNdSkwne/3mV/v101R28M7X5yHeaZBGIZh9VqqXEmNjnQTCoitFEiPx6U/JqXfJ6Sg2grDN/Wk3xby7NW0VHp31fvF/IT016NehUBcjY709lL6cC39fSWN1W96XyAyuPR4vNeUJF10pLHOwBcAl/pNtUNpLNm3gqIgNJggNJggNJggNJggNJg... | 1 |
math | grade-7 | perimeter-and-area-changes-in-scale | false | true | Look at this square: If the side lengths are doubled, then which of the following statements about its area will be true? | "iVBORw0KGgoAAAANSUhEUgAAABsAAAAOCAYAAADez2d9AAABk0lEQVR4nN2UK6syURSGnzmeAS8DJsvUETeCMP4Eo0wzCN6KP8JoEgyC2SDYDYOIKJjsmsQLIlYZweIVg8qcNnBQJpwPDN/b3vWuzbP2hS3Ztm3zIX19CuTA9vs9yWSSWCz2K7zdbhQKBYLBIKqq0mw2/w12Pp9JJBLouv4SVqtVDocD2+2W0WhEuVxmPp//GfYtSRLdbpfdbke/3/8VmqZJq9VCURSEEOTzeUzTfDmBVCpFPB5nMpmwWCwoFov4fD4GgwGWZdFut9F... | [
"The new area will be 2 times the old area.",
"The new area will be 4 times the old area.",
"The new area will be 9 times the old area.",
"The new area will be 16 times the old area."
] | null | 1 |
science | grade-2 | identify-mammals-birds-fish-reptiles-and-amphibians | true | true | Reptiles have scaly, waterproof skin. Most reptiles live on land. A box turtle is an example of a reptile. Select the reptile below. | "iVBORw0KGgoAAAANSUhEUgAAAtMAAADMCAYAAACx6y9WAAEAAElEQVR4nOz9d7weZZ34/7+m3DN3r+c+veXklPSEFEINhN6lCoKKsIuu6KogiuKy6sKKK81VxEWwoKIgShNhCRAJoYT0kJ6TnJPT2937PfX3B1/Oj0CAJEbdz+79fDzO43Hu+55yzXW/57rfc801M4Jt27ZhGFiWRUVFRUVFRUVFRUXFhxNFEVmWEXRdtyuJdEVFRUVFRUVFRcXBEUURsZJIV1RUVFRUVFRUVBw8y7IQ/96FqKioqKioqKioqPh/VSWZrqioqKioqKi... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA4IAAADMCAYAAAAmsx3gAAEAAElEQVR4nOz9d7QkZ33nj7+eUFWd++Y0OY9GoywhIYFAImOSjLAwssHmt8ZrlrMYHww2Nmt7HdcY2LUx+yWYYIKxWUuAwSxCCIQkUA4ojjQ53nxv5wpP+P1RV3eREGKEBXi/336duedMd1d4qvpTT9e7Pkl4770xBuccffr06dOnT58+ffr0+dFIKdFac3sTdpShqn7WI+rT54lpWdjTgRMpDGp41kD+vuyLwD59+vTp06dPnz59nhrOOYwxfRHY5989VZU/rAB... | 1 |
math | grade-6 | classify-triangles | false | true | Is this triangle scalene? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADOCAYAAAAEw3WqAAAh1klEQVR4nO3dfXRU9b3v8c/kgQRiIBqMRIkEDCRySEtEA5haCbZw7jKnnpXVrubW1RX13hxXz0qw2gZRnrSitNqD1VB7GttrUIl4TFNoiZg0yUACJggYFJQYhshDMBgMBBKYTJ7m/oEdTQeswN6zM5P3ay2Wy509ez4j/PH1w29+P5vb7XYLAAAAgCGCrA4AAAAABBLDBuw//vGPstlsSklJ0b333qvVq1errq5O3d3dRr0FAAAAMOTZjFoi8pOf/ET//d//7XU9JCR... | [
"yes",
"no"
] | null | 0 |
science | grade-5 | identify-mammals-birds-fish-reptiles-and-amphibians | true | false | Select the reptile. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAAD8jklEQVR4nOz9d5gkx3XmC/8iIrN8dVV739M9PT3eDzDwIACCoBcpkqJIOVJamStppXu1Wkmrq1192pWutNqVViu/sitKFEVvRBIkYQnCAzMYYLw37X1Xd/nKjIjvj8jqboDgJ0r8537PowTmaZeVlZXxxolz3vOeE+LFVWt3pCGr+NfjX4//Vx5FDRfKMNOAVg/uzLvfy38F7r8e/28/sgp2pN33Jb3xe/mvwP3X4/8fjiZOA7vxO+/1Tkym3K/tphOFEFhrEEJ... | 1 |
science | grade-7 | compare-concentrations-of-solutions | false | true | The diagram below is a model of two solutions. Each pink ball represents one particle of solute. Which solution has a higher concentration of pink particles? | "iVBORw0KGgoAAAANSUhEUgAAAbAAAAEVCAYAAACBn7B3AAB6T0lEQVR4nO29eZwfRZ3//6zuzzWTyTEhkANJmByEIwlnQAiIoCBCkPOrgj9WYBEXFVZdRVdcV3HxQoXFXXHxWGQFXEUOEeRmOTyAcMgVlRxcSQhIDpI5P5/u+v3RXdXV/enPZz4z8/lM5vNJvR6PZPpT3V1d3V2vfr9eVdXVQkopsbCwsLCwaDI427oAFhYWFhYWw4ENYBYWFhYWTQkbwCwsLCwsmhI2gFlYWFhYNCVsALOwsLCwaErYAGZhYWFh0ZSwAczCwsLCoil... | [
"Solution A",
"Solution B",
"neither; their concentrations are the same"
] | null | 2 |
math | grade-8 | apply-addition-and-subtraction-rules | false | true | The number line shows two unknown numbers, t and u. Is t+u positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAH4ElEQVR4nO3df0yU9wHH8c9zcAcFUaiVzRqBLE3KGCl1wgnOtjb7wyWGNTjnYtYZszVmGuL21/zLLcuIi12WLUazmboscYW6pMNWlqxdsjSnf3jHDxW9id2WABpYB3NKATnuuHv2x3N3woTDwXHPnfd+JZDnnnv++OS5Az735ft8H8M0TVNABmtra5NhGNq7d6/dUZAivOYAgHSWa3cAYLnu3LljdwSkGK85ACCdPXbBDoVC6unpkc/nU2lpKSNHAAAkcGIwrI6RsHr... | [
"positive",
"negative"
] | null | 0 |
math | grade-1 | time-and-clocks-word-problems | true | false |
At 11:00, Finn began cleaning the kitchen. It took him 3 hours. What time was it when Finn finished? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAhb0lEQVR4nO2deXhTVd7HP0mTNG2SpmVpWmpblraCQGlxQ2kRBllkKILiII4MfQVn3hlQwXEBLYNaUJzRBxCceUdBcRhZLKDsmyBCR0FGSgsotGVpBZIUSpsmabPf94/QQKBAs5Sy9PM8eXp7l3NO7jf3nHPP+f1+RyQIgqCzQWktGJ3gEGjhFkIiAlUIJIeDRgYinVUQfqhp7mK1cD24PwIkJbXuf2JlcKfC/Wto4dbB6IQjZtDaoLgWxDUO94EWsW9NVCFubQF... | 2 |
math | algebra-1 | identify-linear-and-exponential-functions-from-tables | false | true | Is this function linear or exponential? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEqCAYAAAAvYSeKAAAdT0lEQVR4nO3dbVRVdf738Q8H8A5JFEEQK8FK1MIksyjTGZixxoZWio4Zo2mOpnmV0zBZUpq6UkdhitDBGtMgtctEk9JIMcuyUbqZEctLrLGgdMzUiOEmFYFzPWjF/08ganzhcPT9WssH7n327/fdPnq71+bg8ZfZ/3HKDYyf0lkvLD3u6jGa3CNPdHX1CAAAAGgEh6sHAAAAAC4kBDYAAABgiMAGAAAADBHYAAAAgCECGwAAADBEYAMAAACGCGwAAADAEIENAAAAGCK... | [
"exponential",
"linear"
] | null | 1 |
math | grade-3 | open-and-closed-shapes | false | true | Is this shape open or closed? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAAHbklEQVR4nO3dP2xV5x3H4S9VF66MPIAIQ/AAEkECQRnhblUhCkNoshSk/JGMWpoqIUMNSxKJqJmIMyREoiSKBxLJZAHBAK2dsdfZ4pg6ElRyB7tDiMJgYuzxdnDtRG3TYnPs91zzPJsl2+c3fvTqd96zrt1utwMAAFTiJ6UHAACAtURgAwBAhQQ2AABUSGADAECFBDYAAFRIYAMAQIUENgAAVEhgAwBAhQQ2AABUSGADAECFBDYAAFRIYAMAQIUENgAAVEhgAwBAhQQ... | [
"open",
"closed"
] | null | 0 |
math | grade-4 | compare-fractions-with-like-numerators-or-denominators-using-models | false | true | Which fraction is less? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAC5CAYAAAAS5EjTAAAIvUlEQVR4nO3dT4hVdR/H8c8RNSstploUoYkSBRGWSIYEKpmLqYWIWtAfWrSMCAqJ/iBEK5ctXIfQogHbWkFaY+AiQgpXyqhoZDTRYAQiFvdZdCd6eHhoJr/3nrme1wvuwuHAfA/8wDdfzpzb9Hq9XgAAgBKL2h4AAACuJwIbAAAKCWwAACgksAEAoJDA7rt06VKapvmfzzvvvNP2aIwg5wkAumtx2wMsFJcuXUqS3HbbbVm/fv1fP1+7dm1bIzHCnCcA6C6B3ffrr78... | [
"5/6",
"5/8"
] | null | 1 |
math | grade-6 | changes-in-mean-median-mode-and-range | false | true | Look at this set of 10 numbers: How would the median change if the number 64 were added to the set? | "iVBORw0KGgoAAAANSUhEUgAAAYkAAAAkCAYAAAB8KMY5AAALD0lEQVR4nO3daXRU5RnA8f9kJplsk0A2yMKahbAFCBDAoCirQBCwarHup7baoz241B48p8e2H9rjp3psrbUe1GJVwKrHgoAgSFgkbCEkgUASSAJJSCD7npnM0g8DA1kmczVz5+Lp8/vGHSbvk/e57/vc5b03OofD4QCwWqG7G+x2wIEQQoj/Nzrw84PAQDAYrm9yOBwOczeYzdrGJoQQ4vZhNIIxEAw2qxQIIYQQvZnNoDeAnxQIIYQQA7GYwc9m0zoMIYQQtyObDfw... | [
"increase",
"no change",
"decrease"
] | null | 0 |
math | grade-1 | subtraction-sentences-using-number-lines-up-to-20 | false | true | Which subtraction sentence does this model show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABhCAYAAADsidaRAAAWS0lEQVR4nO3de1BU590H8O9ykyKwoIJKSlghBYNBUImANsXLaO5Rm0g1k4nYGhPTvjaacYyJnWhCq6m56IROJjYzNTbFUbFgTOvo+xoBR+QqaJXRNOqCZMGw4OIuF2Fl3z+OZ2FFhYUD55zd72eG2d2zzPp7XGC/++zvPI/GZrPZQEQ0SDUWYMn/Aad+BEoXAYkhclc0MK4yDiIiko+H3AUQkfod1AMJ2UI4VTNXGQcREcmLAZuIBuVGB/D8/wJrJwPbkuWuZuBcZRx... | [
"7–3=4",
"7–4=3",
"9–4=5",
"7–2=5"
] | null | 3 |
math | grade-4 | compare-area-and-perimeter-of-two-figures | true | false | Which figure has a greater perimeter? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKgAAACHCAYAAACCsRJXAAAKl0lEQVR4nO3dYUxT5xrA8X+hbZCrFwoIFu3uJMOqdAuObCSM4Q2SiHNoNrIgiYwEs6RkajSRbPswhQ+wGF22fdpmBsnimNHFIF4/uoVhZuKMcyxLGq8MhEGEqI0KwkBL7wdu661lyHXAeQ/v80uMlnMKz2n+HHih9ViCwWBwYBw6R2AoAA+CCGEYqwWWxEJmPKTZwTIwFgz+eNfosYSIlvt3sF4dmbzhtIP7b5P1CmGUoQBcuQfXx+HfIxBz98HkBolTqGBJ7GS... | 1 |
math | grade-4 | what-decimal-number-is-illustrated | false | true | What decimal number is illustrated? | "iVBORw0KGgoAAAANSUhEUgAAAUgAAACkCAYAAAD15bd+AAADB0lEQVR4nO3dwU0cURRFwQ8iIodABGydAgE5BW+JgBCc0hAAPoNmrO7/LKq26Ekgtc40LC4Pl8vlsgD45HH3NwAwlUACBIEECAIJEAQSIDxd++KP1/ezvg++mT+/nm++8TxylHoe8w3Sw8gknkd2uPoGudZaP19u/6Rfa63fb+9u3f717l/8Tz+r2/m3Xz2P/gYJEAQSIAgkQBBIgCCQAEEgAYJAAgSBBAgCCRAEEiAIJEAQSIAgkADhof6roXkpjnTrHqTnkSPV82j... | [
"1.95",
"1.96",
"1.83",
"1.94"
] | null | 0 |
math | kindergarten | count-scattered-shapes-up-to-10 | false | true | How many hearts are there? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAF0CAYAAABWuE3dAABM00lEQVR4nO3dZ2BUZeI18DM9k0x6LxBSIBBIQu+hd0VARATBsqKuFLHg3xXL2nUFBVFRVt9dBRSliw1QkCJFQUJCMJTQIY2EkJ7MZGbeD4ILiKTNzHPvnfP7tpSZwwbDyc2951HZ7XY7iIiIiIhIEdSiAxARERERkeOw4BMRERERKQgLPhERERGRgrDgExEREREpCAs+EREREZGCsOATERERESkICz4RERERkYKw4BMRERERKQgLPhERERGRgrDgExEREREpCAs+ERE... | [
"5",
"9",
"6",
"8"
] | null | 3 |
math | grade-1 | subtraction-sentences-up-to-10-which-model-matches | true | false |
Which picture shows 4 − 1 = 3? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARIAAABKCAYAAAB3ndsNAAAWGElEQVR4nO2deXBcx53fP/2uGcwAAwxAkAB4SKQIUTwF6qDIlWXLlXh3bUdex9YeKaWyTJxSKs4m8VbFqWySyroqqdpNttZxvCmtN94ts7KWvKWVI9sbH7KV1W3SpMxLMineF0gAxDX3vKu788cAIAEBBCkAJDjsT9UU+eZNv/f7ot7v26/7ve4WWmvdH8LJChQlxBqDwWC4Jo6AJhu6U7DMA9EfaL23cKvDMhgMtyuPZMA5UaltdHqwLl1zGYPBYLgWRQnHytA... | 2 |
math | grade-3 | correct-amount-of-change | false | true | You pay 28¢ to buy an envelope costing 20¢. You receive the following change:Is this the correct amount of change? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAA/CAYAAADaDb8WAAA56UlEQVR4nO3dZ5Tk13nf+e/9p/pXDp3z9PR0T84Zg0EgQDCBBEXRokTRllbBtGStbGkt53WQvT4+Xttr2bItSyJFUYE0RYGkQDAgZ0zA5Bx7pqd7Old15X+++6KGkANIDYAGCAj38wYY4BxU3fvrFw9uP/e5QkopURRFURRFURRlWWg/7C+gKIqiKIqiKH+ZqAJbURRFURRFUZaRKrAVRVEURVEUZRmpAltRFEVRFEVRlpHxdnyI7zSp1+u4rkOzXifwXBrFWbxQYhg... | [
"yes",
"no"
] | null | 1 |
science | grade-5 | use-scientific-names-to-classify-organisms | true | true | This organism is a marbled salamander. Its scientific name is Ambystoma opacum. Select the organism in the same species as the marbled salamander. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOy9ebwkVXn//z5bLd19t9lAFkGWYXFEEHBDiYhEUIIbCrgEwSUajAIRBNQoMREVRBRxgyDigooxAfzFSMCFAOoIKDMgYgREZJ393tvdVWf9/VF3bhgYEPCqX0m9X6/7mrnd1VWnzjm3+jnP+TzPI1JKyXtPjJGWlpaWlpaWlpaWlj9PpJRorRHOudQa9y0tLS0tLS0tLS1//kgpka1x39LS0tLS0tLS0vL4IMaI/FM3oqWlpaWlpaWlpaVl7mgN/JaWlpa... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6IAAADMCAYAAABp7h4wAAEAAElEQVR4nOy9ebgsZXnu/XunquphDXsCZBBk2CgigoKzHHFEJcQoDkQTnBOjiUMEEZNjiDniiDiQqHhQiUYNJvlQT4wGjRKckEFARYiAiAzCHtfQ3VXv9P3xdvfq1avXZgNbTbDua/e1uqur3qmqe/dd9/Pcj4gxRuccIQRq1KhRo0aNGjVq1KjxPxNSSrTWCCF+00OpUeMuIWsSWqNGjRo1atSoUaPG/3yEEHDO/aaHUaPGTkHXJLRGjRo1atSoUaNGjfsGQgh... | 2 |
science | grade-6 | identify-rocks-and-minerals | false | true | Sphalerite has the following properties:
solid
pure substance
fixed crystal structure
found in nature
not made by organisms Is sphalerite a mineral? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAADA60lEQVR4nOz9d5hc93nfDX/OOTNnep+d2Z3tFVjsogMkQLBaokQViqKarSiximPnldwSxeV5Ut7EuezEseO4RvJjS4otq1qSVUhJFDtIECBIomOBxfY+Ozu9l9PeP87OIejIJN/HVhxJe1/XXDtY7O7MnPO7f7+7fL/fWzAMw2DHdmzHvq+J/9hvYMd27P9k23GQHduxV7EdB9mxHXsV23GQHduxV7EdB9mxHXsV23GQHduxV7EdB9mxHXsV23GQHduxV7EdB9mxHXs... | [
"no",
"yes"
] | null | 1 |
science | grade-2 | identify-solids-and-liquids | true | false | Select the solid. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAAV80lEQVR4nO2daaxdVb3Af2vt6Qx36j2daCkytLWP+6RSBMG0KFHxQ5+BWIMfRBODkSjRQjTG5EVrNMbgByPE2A/PiYSHJDiQV4OCLxGExkdaX0uBB6W0lEEot/OdzrT3/r8P65w7d6C0vWevvX7J6Tl7n332Weuu3/mvtf57qNp2XOS9Zej2cDjOK8MJ7B6Ftxowz4e1fWa9dkI65opuD95bNq9Hkon12gnpmEva/jVlYp2em6I4HCfGSenoOJyUjo7DSenoOJy... | 2 |
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