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-2 | predict-heat-flow | true | false | Two solid blocks are at different temperatures. The blocks are touching. Which picture shows how heat will move? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAXQElEQVR4nO3deXAk1X0H8G93zz2aGY00o3tP7y7rBbNrDgMOYEw44zLgYEPspJLiL4dyHFclTlwxdqWSiu3KWbaTiuMqE0gMCTa4MKzB5liIwZjF4Atz7aWVtBqdo7nPnu5++aO1o52VdjXaGXW3pO/nH9DszOhJr+f73vt1P7UkhBBTKnC0BOR1QBMgImoLlwSEFGBnAOj1ANJUVYif5exuFhGtd5eFAdeRkvlFvwc4L2imERFRO+R14FARmFSBwyVAzmnmPzB... | 0 |
math | grade-6 | compare-area-and-perimeter-of-two-figures | true | false | Which figure has a greater area? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAR0AAACwCAYAAAAyn7r/AAAI30lEQVR4nO3dT2iU+R3H8c8kxgarq9aYGjSXpN1VhIBGsBDFkIwkoeSg21B6aNeDCpWoCSgetJfCthAU7MGaVCN4SC8rWLJ6EF1FKlW2WDuIDTarW7FQgzFidE00SZ8e4qS65t/MPM/v9/ye5/2CgGGi+R7kzfBxMiY8z/MevZa+eik9H5NGPQGAb+YkpAX50g/nSd+fKyUevfK8LwdtnwUgDtZ/IM3pfTn+Sclc6aPvjhcJAPzyfEy6+430n9fSP19KeYOj4w8... | 1 |
math | grade-3 | correct-amount-of-change | false | true | You pay $1.18 to buy a granola bar costing $0.65. You receive the following change:Is this the correct amount of change? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABTCAYAAAClO3A3AABoFElEQVR4nO3dd5xcd33v/9epc6aXne29q/dmuRu54QaYDgFCAiQhNwkEfiQkuQmkcW9uAiShhBYCGAPGGGzAVW7qvfe6vc+Waaef3x+zO0hgG8nYOMHn+XjooZW0Ws05s374M5/5fD9vwfM8D5/P5/P5fD6fz/eSEF/pB+Dz+Xw+n8/n8/0m8Qtsn8/n8/l8Pp/vJeQX2D6fz+fz+Xw+30vIL7B9Pp/P5/P5fL6XkPxKPwDfz3iehyDAxEQGSZIQRYHR0TES8TjBUBD... | [
"yes",
"no"
] | null | 0 |
science | grade-3 | natural-resources | true | false | Which of these pictures shows a natural resource? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAV4AAAElCAYAAACszooYAAEAAElEQVR4nOz917MlWXbmif22cPcjrlYhM0RG6lJAVUEURA0AAmhO98wQzaE1aTSazZBD4wMfyHklH/hPcMzIRz6M0YwP3aTNNLqBRqMVqiGqUCors1JnRkZkxg1x9ZHuvgUf1t5+zr0ZkZVodFu/lKfdvCfOPcJ9+97fXutb31pLfe80xpeHsGr4+fHz4+fHz4+fH/8ej5GHdyaw38Cmhd/YkOf1z0H358fPj58fPz/+wxyrBl4eyuOxXzyvfw66Pz9+fvz8+Pn... | 3 |
math | grade-5 | acute-obtuse-and-right-triangles | false | true | What kind of triangle is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACwCAYAAAA16xkbAAAhu0lEQVR4nO3da1jUdf7/8dcwjqESMipICoah4CExQcE0rWiVDlqbmGWraK5uJ7MytbTUPKSZaeVhO3qCNMTTrq2F66KboaarVqwSoCz9FBVBwcNIxDTM/0bJ31q3RGb4cng+rssbejHfz4urO68+13veX5PT6XQKAAAAgEt4GB0AAAAAqE0o2AAAAIALUbABAAAAF6JgAwAAAC5EwQYAAABciIINAAAAuBAFGwAAAHAhCjYAAADgQhRsAAAAwIUo2AAAAIALUbABAAA... | [
"obtuse",
"acute",
"right"
] | null | 1 |
math | algebra-1 | compare-linear-functions-graphs-and-equations | false | true | Function A and Function B are linear functions. Which statement is true? | "iVBORw0KGgoAAAANSUhEUgAAAjcAAAGlCAYAAAAGbtd7AABPVUlEQVR4nO3df3xT9b0/8FeSNk2btLQE0gJtIcVbYBYoCraopQNFfumcyg9/fB2yH+zuIVM3cbrrxubc/DWdbnf+uOjQ6dxUxIGwq2wWUBRKxUkNQouSBlpK01Ia2vTkd873D24jhbZJetKc5PB6Ph4+kOTknXfCO5++cnJOqhJFUQQRERGRQqjlboCIiIgolhhuiIiISFEYboiIiEhRIgo3I0aMgEql6ve/ffv2DXGbkXvppZegUqlQWloa9/t+//33Q8/JRRddFPf... | [
"The y-intercept of Function A is less than the y-intercept of Function B.",
"The y-intercept of Function A is greater than the y-intercept of Function B."
] | null | 0 |
math | pre-k | represent-numbers-with-shapes-up-to-5 | true | false | Which group has 5 hearts? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAEcCAYAAAAV9AvgAAALbklEQVR4nO3dzW5TZx7H8Z9tnBcnxiyYGaULiERnBhaTROqi2USl2XRVAVdQcgWQKyBcAekVTOYKgHY/WOoGVYrkoQvUaUYCFk1HzYIUcEgc17MwLk1Jpnk5/p0n+X8/G5pCDs8/Of46PhyfU+h0Op0ftqSVpvSiLW13BACZOFWQqiXpzxXpTwNS4YfNTufrn/JeFoCT7sPT0qnvmt0Pxgakv450awQAWXjRlr59Ja1uSf9uSsWftru/QWwAZK1a6rZFkl62pWL... | 0 |
technology | grade | web | false | true | What meaning or function is usually associated with this web interface symbol? | "iVBORw0KGgoAAAANSUhEUgAAAV4AAAEsCAYAAACLwdvQAAAKtElEQVR4nO3dL3Mb5xbA4dM7hZ2wEjPTJcZCAob+BDY1DjcIFDA3Fq0+gaCAkLCIqNiSsJ1yX3C7ubIbx/+0593VPg9qM53xmXHyy+nRyvrt8fHxMQBI85/SAwCMjfACJBNegGTCC5BMeAGSCS9AMuEFSCa8AMmEFyCZ8AIkE16AZMILkEx4AZIJL0Ay4QVIJrwAyYQXIJnwAiQTXoBkwguQTHgBkgkvQDLhBUgmvADJhBcgmfACJBNegGTCC5BMeAGSCS9AMuEFSCa... | [
"Paste",
"Tip/Idea",
"Color picker/select",
"Go to homepage"
] | null | 3 |
science | grade-6 | identify-ecosystems | true | false | Select the prairie grassland ecosystem. This ecosystem has:
hot summers and cool winters
a medium amount of rain
soil that is rich in nutrients This ecosystem has:
long, cold winters and short, cool summers
many evergreen trees
soil that is poor in nutrients This ecosystem has:
warm summers and warm winters
a rainy sea... | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAp8AAACtCAYAAAD2xRSHAAEAAElEQVR4nOz9ebRtV13mjX/mnKvb3Wluf5N7k5uOxNAZAik66ZufgmABQlE0gwpKUYxSUJO3gvCaYVMSjFgUIVC8rxppSguHvILjlbL0xQihkdbQCyEmIc1tzz3NblY75/z9Mddce+1zbxpKBTXryTjj3L332muv7mQ/6/l+n+crPr9p7YUDGCk6dOjQoUOHDh06dPhHwVjDt6YgtiprO+LZoUOHDh06dOjQ4R8bYw3CWmt/0BvSoUOHDh06dOjQ4cGBoP3g8FH... | 0 |
engineer | grade-7 | identify-control-and-experimental-groups | false | true | In this experiment, which were part of a control group? The passage below describes an experiment. Larry drank coffee out of a paper cup. He remembered that his coffee shop had cardboard sleeves for their coffee cups. He wondered if using a sleeve would help keep the coffee warm.
Larry placed a cardboard sleeve on each... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAEICAYAAAA0p80lAAEAAElEQVR4nOz927IsS3Kei30eEZlZVWPM0zo1Go2muEkIJEgKW9SlTNKdTBfbeLGlG70D34WvoCeQmV5AtmWmS5lkkm1SRnGT3CDYQKN7Heac41BVmRnhrguPyMyqMeZca3UDvRZAhFnNmqOOWZkRHu6///67/Mt/+S+Nvxt/N/5u/N34GzT+1b/6Vz/I9yaA/+1/87/jdDpxfLzndDoyHU88Przj/v1bzg93/Oov/4LH92/55qsvOT68g6LEKHQxEBCsFAKChEgIAWI... | [
"the cups that did not get cardboard sleeves",
"the cups that got cardboard sleeves"
] | null | 0 |
math | grade-3 | coordinate-planes-as-maps | false | true | What is at (2, 7)? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFjCAYAAAAHNnwuAACG00lEQVR4nOzdd5zU1b34/9enTN0Ou/RqASuCKJYIIiBGgiVqYrzqNfbEmhjbL8Y0/V5LYmzRJCZX09Qk10S9Br1YI/YoooKgVKkL23enf8o5vz9md2DYpSxsgZ338/H4PJj5fOZzzplZdvY9Z87n/Ta01hohRJ6WWJKM4273MY7r01S/iaL697BTGzFCRdjREjAMtNYYqWaCK99A20GcEUejfJ/Eus/QgWJKpnwPO1zUrs1QMEBpSbS7npYQQggheoAhAbYQ7TU2x0m... | [
"hotel",
"magic shop",
"locksmith",
"bakery"
] | null | 3 |
math | grade-6 | which-is-the-better-coupon | true | false | Which coupon will save Ronald more money on a book of poems originally priced at $21.90? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAASYAAAC6CAYAAAADF+BWAAA4bElEQVR4nO2dd3xb1dnHf/dqT1veO4lXPBI7ewIJIwPCSgIhFEigtKWL0rd08AItpYtRaF9oaWkphJZZSEISIEAChCRkDyfOcBLbseO95KG97/uHLFnXkqwra1hyzvfz4UN077nnPpJ1fzrnOc95HophGKbDAtQZAK0dsDEgEAiEqMKnAAUPKJIC6UKA6jAzzGHNWJtFIBAITuYqAX6twfkiUwhMljlVi0AgEKKJ1g6c1wPtFuCCAaA1NucJIkoEAmGsUPCcGgQ... | 0 |
math | grade-1 | more-less-and-equally-likely | false | true | If you select a marble without looking, which color are you less likely to pick? | "iVBORw0KGgoAAAANSUhEUgAAAPoAAACnCAYAAAA4/EEUAABN7UlEQVR4nO29eZwV5Z3v/36qzummu+mGbmwbaLGRHUSJARVEm4gTIVFHwQyIhrjEX1Bn5rrgXDXqJHcGF64Z8cZc9ZpRB524RB3AMQGMWyAGBTqiIiCCBrobGqH37rNWPc/vj6eqTp1eoPcFzueVWKfq1KmN/tR3/36FUkqRQgopHNcwevsCUkghhe5HoLcvIIWehazajyz9FFV7EFldjqo5gArVIAYNxRg0DJFbiMgtxDz1LERWXm9fbgpdBJFS3Y9z2HHsvR9i7fg... | [
"neither; black and orange are equally likely",
"black",
"orange"
] | null | 0 |
math | algebra-1 | surface-area-and-volume-changes-in-scale | false | true | Look at this rectangular prism: If the height is halved, then which of the following statements about its volume will be true? | "iVBORw0KGgoAAAANSUhEUgAAAKoAAACcCAYAAADvVTAyAAAd3ElEQVR4nO2deVhV1f6H38NhRkYRMTWUxEtiYmJi2f2RQ5OaQ2aWep0HSk2c5yFHVEA0NRQ1KscSZ80BS0oNQ+SKigiIpuIBBGSGwxn27w+Cq6YGyOEM7Pd5+INz9l7rg77PHtb67rUlgiAIiIjoOEbaDiAiUhlEUbXIyZMnefnllxk0aBAymUzbcXQbQaTWuXXrltCrVy8BqPixsLAQli5dqu1oOosoai1SXFwszJkzp0JO55dchQmhG4RP5s0STC3MBUBwdXUVwsP... | [
"The ratio of the new volume to the old volume will be 3:1.",
"The ratio of the new volume to the old volume will be 2:1.",
"The ratio of the new volume to the old volume will be 1:2.",
"The ratio of the new volume to the old volume will be 4:1."
] | null | 2 |
math | grade-6 | model-and-solve-equations-using-algebra-tiles | true | false | Which set of algebra tiles represents the equation x+3=6? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKEAAAB6CAYAAADXqDNaAAAHbUlEQVR4nO3db2wTZRwH8G/v2g1WGBDL2AZI3JR/RiMQAkZ5oYQAJqDJjIGXJib6Qn21aEx87+AViTEYEw0hRoyAJBCTyWJQUMcwDFD+CDiQinRbC4OuXVm3u/NFuY1JjO31nv7ubt9PQpbedv09e/im7fPk7reQZVlWbx74YwgYNIBRC0RKhUPAdB14rAaYUwWEeoct60Raelg0Wa2qBcKXhwoPGqqARdFCQolUGjSAi1kgkQcuDQFaerTwDQaQKmW6XsgbAGQ... | 0 |
math | grade-2 | read-a-thermometer | false | true | What is the temperature? | "iVBORw0KGgoAAAANSUhEUgAAALkAAAEOCAYAAADVFbYlAAAY3klEQVR4nO3dfXAT550H8K9eDEmqFb60w7Dg5khqifZKirOmTdpLLJmZZOawc2fnpmellIQb5NSGTosTYtoDTLBJ50KvFXczCRksBgKlEZ0O0InE9TVYStomKV7cNrRFcgltsNf1TXOOViThxdb9YaxD1q60u3pZefX7zGgcPatn9WTmx6Nnn31+z5qSyWQShBiYVapwaGgIExMTqb+Vzu12o7q6GnV1dXo3hWhgurEnP3jwIJ5++mmMj4+jtrYWTqcTDGPTs326Gxk... | [
"35°C",
"15°C",
"25°C",
"30°C"
] | null | 0 |
math | grade-2 | interpret-bar-graphs-ii | false | true | Abby went to the zoo and saw some moose, chimpanzees, and camels. She made a bar graph of the animals at the zoo: Which animal did she see more of, moose or chimpanzees? | "iVBORw0KGgoAAAANSUhEUgAAAgUAAAFfCAYAAADeYb8BAACRp0lEQVR4nOzdd5xcdb3/8ddpc6btzPbNbnojJIEUAgQCaMKlKk1EUVDRC6JyVUCv4rVdvHp/KIoCFhQVoldEUQkdaSF0AoQ0kkB632Tr9Dn9/P6YZZNITdtdks/z8fDhzswpn3PY7HnP9/s936OEYRgihBBCiIOe2t8FCCGEEGJgkFAghBBCCEBCgRBCCCF6SCgQQgghBCChQAghhBA9JBQIIYQQApBQIIQQQogeEgqEEEIIAUgoEEIIIUQPCQVCCCGEACQUCCGEEKK... | [
" moose",
" chimpanzees"
] | null | 1 |
math | grade-2 | identify-repeated-addition-in-arrays-sums-to-10 | false | true | Which addition statement describes the array? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABiCAYAAABqHaQ/AAADaElEQVR4nO3dPU7jUBSG4etReosdxQVbYRu2O9jClMMGIlHSeEcoK/BU0FAgR59/cnkeKRJFYp0TKdKrS8DNMAxzAXbR9/3eIwAAYX/2HgAAAGpy+vzBSRpsZxzHvUcAAFbiBBsAAIIENgAABAlsAAAIEtgAABAksAEAIEhgAwBAkMAGAIAggQ0AAEGLArvrutI0zWEeXdfF3gi72e1ouwEA92lRYE/TtNIYt0nOY7ft2A0AqNnp56d89/7xNz3HYo8PT6tc127rshs... | [
"5+5+5+5+5",
"1+1+1+1+1",
"4+4"
] | null | 2 |
math | pre-k | represent-numbers-with-shapes-up-to-5 | true | false | Which group has 2 rectangles? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAEcCAYAAAAV9AvgAAAE2UlEQVR4nO3dPW5UZxiG4Xf8F4kApaMULhMrK2BzlGyFzbABREjnAocSw0h2GJ0UI6Q0uJrcB9nXVc3RNE91a745xbdZlmW5vpv5aztzs5v5ugzAQZxsZp4dz/z2ZOaXs5nN9e2yvPm09izgoXvxfObk/Xb/8OvZzOXP+xoBHMLNbubdl5kPdzN/bmeOPn3dfyE2wKE9O963ZWbm827maPefLwAO7Vtb/llmjtadAjwmggNkBAfICA6QERwgIzhARnCAjOAAGcE... | 1 |
science | grade-7 | compare-thermal-energy-transfers | false | true | Scientists in a laboratory were working with insulin, a protein often used to treat diabetes. They left two identical vials of insulin in different places. This table shows how the temperature of each vial changed over 15minutes. During this time, thermal energy was transferred from ____ to ____. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAABfCAYAAACdpLOcAAAhRklEQVR4nO3de1hU5do/8O8Mh2E4I6DlkXGMM4xoHmjjCXjLEFPHNyv1dWtpbiPFdmrtjbpVzNNlPzO327eUtNKS3CTv1sgsT6F5YIdCmqIihkqayHlmYGBmfn+wwTjPUWD4fq7LP5xZ61n3eta6Z27WetYzgnUr7uhARA3MmueFndsK2zsMok6NeUSkn7f+1rO9QyArI2zvAIiIiIiIyHxY4BMRERERWREW+EREREREVoQFPhERERGRFWGBT0RERERkRVjgExERERF... | [
"the surroundings . . . each vial",
"each vial . . . the surroundings"
] | null | 0 |
math | algebra-1 | domain-and-range-of-square-root-functions-graphs | false | true | What is the domain of this function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABlyklEQVR4nO39e3RU92Hvf3/mpruEhAQSCCTM1RZG2NjggCG2a8d27cQJpClOVi7u4540Obmd/NGu/HrSnLbLP588p0164iZpTk7TOOnqWmn8xHFrsExwjA0BG4wMAgmMZQG6IHQZXee+Z2bv5w8hBRkwktlfhkHv11qJ0Wj2R1/tPbPnM1/t2dvjOI4jAAAAAK7wZnoAAAAAwPWEgg0AAAC4iIINAAAAuIiCDWCS6upq7du3b+LrU6dOac6cOWpvb8/gqAAAyB4UbAC... | [
"$\\{x \\mid x \\geq 1\\}$",
"$\\{x \\mid x \\geq-6\\}$",
"$\\{x \\mid x \\leq-6\\}$",
"$\\{x \\mid x \\leq 1\\}$"
] | null | 1 |
math | algebra-1 | identify-linear-quadratic-and-exponential-functions-from-graphs | false | true | What type of function does this graph show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAETCAYAAAAMFHHvAAAga0lEQVR4nO3dXWxb533H8R8VyZSpxJad6iUvjqy8zJqs1DJk1/YQGFWAAlUStnOG1EWzFEu2XARZsKG5GQos7ZomyIa2N4nbNO3stKuLuu0KY3aRYL5QsQ2RZIeIEkuGjGyQFK+LRLaxaIc0Jdk6u2BJPrRliS+HPOfwfD83IeWH1N8vCn98+D/PP2BZliUAAAAAtqhzugAAAACglhCwAQAAABsRsAEAAAAbEbABAAAAGxGwsaxUKqVUKuV0GQAAAJ5DwMayRkdHNTo... | [
"quadratic",
"linear",
"exponential"
] | null | 0 |
math | grade-2 | certain-probable-unlikely-and-impossible | false | true | If you select a marble without looking, how likely is it that you will pick a black one? | "iVBORw0KGgoAAAANSUhEUgAAAMYAAACECAYAAADLC1Q6AAA02UlEQVR4nO2da5Adx3Xff91zH/vELrAAwV0QACE+QPEBSRRMiZYphiVSsiqx5KdciZOyYyf2B8f+kHxIqmyX/Eg5TsV2bFVc5Sp/kC2XYyblyLIYW6HFsiiKpGiLMiVSIgiQIh4EFiCwwO5i7969j+k++dDdMz333oX2BeyCvKcKmO2ZufdOn+7zP+d/Ts+MEhGhL33pS0H0Zl9AX/qyFaVvGH3pSw/pG0Zf+tJD+obRl770kL5h9KUvPaRvGH3pSw/pG0Zf+tJD+ob... | [
"unlikely",
"impossible",
"certain",
"probable"
] | null | 1 |
science | grade-2 | compare-properties-of-materials | true | false | Which would stretch more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AABcK0lEQVR4nO29eZxcVZn//777ra2r9/SaPSE7hBAEErawCgooAoK4jQ4w6LC4jjqiX/3pOI4IozK4OzMiGRRZRECQLQkkrCEkELJvnd732u96fn/cquruLEBCd7qB/uR1U1W3b917btWnnuecz3me50gv9AtxVARiCuMYxxFF0oPNaWi1oUyFpaXBfnmckOMYLcQUOCoSPE95A/vlcUKOYzRR4J8jBvbJo9OUcYzj4Bgn5TjGHMZJOY4xh3FSjmPM4b1LSisNqS6... | 1 |
math | calculus | determine-one-sided-continuity-using-graphs | false | true | Is f(x) continuous from the right at x=9? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAACAz0lEQVR4nO3deXxU5b0/8M/sM5nJRgJJCCQBWRQkgSAqSASKC4hawQW02mLtore22nvb37XW671tlXpvF+tab2+tYDeViljBgCirQbYAgYQtAgkJkH2b9Sxzzu+PMZGwJnCeTCb5vF8vX20mOd98OSdz5jPPPOc5Jl3XdRARERERkSHM0W6AiIiIiKgvYcAmIiIiIjIQAzYRERERkYEYsImok7Vr1yInJwdz5swBANx222147733zvqziqLg2muvxZYtW3qyRSIiol7... | [
"yes",
"no"
] | null | 0 |
math | grade-8 | base-plans | true | true | What does this object's base plan look like? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADQCAYAAAA9HxZBAAAqRUlEQVR4nO3df1zV9f338af5A0U4gOLQUjDYdsIvE9lwV8P1BfctL936ZlHbt9uVTLDvctateWhSa5Wgta0c1zzu2jVt3VKK7XuTvpXM2jJjeVyXpElyZIXRTfQgqBA/PPw6hoBcfxw5CyMEOT/g8Lj/dwg4L+qf5/vT87xf43p6enoEAAAAwC2u8fUAAAAAgD8hYAMAAABuRMAGAAAA3IiADQAAALgRAdsLXnjhBYWFhWnx4sWyWq2+HgcAAAAeRMD2IKvVqsWLFys... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA1AAAADQCAYAAAAJQ4B0AAAyT0lEQVR4nO3de1TU973u8YcCIrcBFIImigptRyxbpMXuFJsDttFl7sa0qWslVDC7sSYr2yHVtLkJmjQXy6nYs081yYqSkpyl2Um0Jk2ssXFsitFIZLQJhFTiIKgQBIfbGATk/DEyOxpDUAZ+M+P7tZYra0BmnpH8Mc/6fn6fX0Bvb2+vAAAAAHhEQECA0REwhL5hdAAAAAAA8BUUKAAAAAAYIAoUAAAAAAwQBQoAAAAABogCNQxeeOEFxcTEaObMmbLZbEbHAQA... | 1 |
math | grade-3 | is-it-a-polygon | false | true | Is this a polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEACAYAAACJVgHaAAAZE0lEQVR4nO3dPWxUB7o38Gc+bOzCjo2EVzKSjcRqQwHxRgqRuBJGeiW2A5o3WyWuQpfQhO1CFbpdGkgX0sBW76UBuii6Eo60kZZIG3MpQBskJlIsxZGMjQsMHnve4sz4A0jWHzM+58z8fg0REHwEp/j7meejUKvVagEAADRFMe0HAACAdiJgAwBAEwnYAADQRAI2AAA0kYANAABNJGADAEATCdgAANBEAjYAADRROe0HaKaphVpUntXi3sJKzFVrMfU0uaEzV63FvYX... | [
"yes",
"no"
] | null | 1 |
math | grade-3 | compare-area-and-perimeter-of-two-figures | true | false | Which figure has a greater perimeter? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJcAAACQCAYAAAAFmvnBAAAGzElEQVR4nO3dTWgTaRzH8d+0Jmg3bhmz23UwKNiXReqhYjGHYq0vEEjxoChG8CT14EtB0MBKUAoFXbBHRbyEKkhjQIRdPHioUkUhKxaKiO22aKHUdc1qiTUBU9PZQ5qSmqqp7b9PMv4+UDSTJ/Rv/DImU8mjmaZpvkoCQwlgPAV8NEH0TZZowPJSoLoM+MUOaK8+mOZf71SPRVbj/hFYMphI3zDswK8/pMsj+hbjKWAgDvyTBP5OACXvPqbvYFg0X8tL0x0BwPs... | 0 |
math | grade-1 | interpret-bar-graphs-ii | false | true | Meg looked in the backyard shed and found some ladders, garbage cans, and watering cans. She made a bar graph of the items she found: Which item did she find the most of? | "iVBORw0KGgoAAAANSUhEUgAAAggAAAFfCAYAAAArnzSxAABpmUlEQVR4nO3deXxU9b3/8df3LLNlDwlL2FcFFVQEXBHc0Vq1tXWrW2ull1q3tmptazfvr9q691prayta0Vrt1aq9VLEUsUppjWwKVgEhBEIIZJtk1nPO9/fHJEPiAJJAMgP5PB8PHiaznc8ck5z3fFeltdYIIYQQQnRgZLsAIYQQQuQeCQhCCCGEyCABQQghhBAZJCAIIYQQIoMEBCGEEEJkkIAghBBCiAwSEIQQQgiRQQKCEEIIITJIQBBCCCFEBgkIQgghhMggAUE... | [
" ladders",
" garbage cans",
" watering cans"
] | null | 0 |
science | grade-5 | use-evidence-to-classify-animals | true | false | Placental mammals are a group of animals with similar traits. The following traits can be used to identify placental mammals: They give birth to live offspring.
They have fur or hair. Observe the animals and read the descriptions. Select the one animal that has all of the placental mammal traits listed above. Great cre... | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAp8AAACmCAYAAACcAuREAAEAAElEQVR4nOy9eZgdZZn+/3mXqjrndHe6O0tnD1mALOyy74ogsgiOgIojqAiKjIoKMqgz6oz+1Pm6DIsOjjCKoDL4VRQGFMGFsAcIW8ISSMhKErJ2ejvnVL3L74+3TnUawuI2M1+t+7pypbvP6aq3qk6fc9fzPPd9iwe3eT+7DToUJUqUKFGiRIkSJUr8WdBvYckgiD7jfUk8S5QoUaJEiRIlSvy50W9BeO/9//RCSpQoUaJEiRIlSvx1QG//zTf+z78AEm8NAEp... | 1 |
math | algebra-1 | domain-and-range-of-exponential-functions-graphs | false | true | What is the domain of this exponential function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABio0lEQVR4nO39f3yUd53v/z8nM5PfCQkJJBCaUEqhhRJaWtpCwdKltt22VkE9VD9qu6erp65V19v367l5c9V1/fTb4/fs6h5d63rcda3ux+/NY9e2a8GA1FLAYKGkEEhoIQ0QCJAfk5/z+5qZ6/r+kSaSAm0C1zuTSR73241bmMlcz7xyvWeuec0777nG4ziOIwAAAACuyEp3AQAAAMBUQoMNAAAAuIgGGwAAAHARDTaAUaqqqrRnz56RyydOnNCsWbPU1taWxqoAAMg... | [
"$\\{x \\mid x<0\\}$",
"all real numbers",
"$\\{x \\mid x \\leq 0\\}$",
"$\\{x \\mid x \\geq 0\\}$"
] | null | 1 |
math | grade-3 | lines-line-segments-and-rays | false | true | What is this? | "iVBORw0KGgoAAAANSUhEUgAAAG4AAABuCAYAAADGWyb7AAAGeklEQVR4nO2dXUxTZxjH/wUqDFHRWRegF/ZiG9FsGI1aUNka8abZzXC90YuhhPEx6QXx62LLNLBloHFJcaghiFfc1JnthhvB6qRC3RdsC5B5US9KyXIWU2bbUKg9u1hsaK0I7XnPOW/P87vs4XDe5JfnvO95/3nO0YmiKILgjhylB0CkB4njFBLHKSSOU0gcp5A4TiFxnELiOIXEcQqJ4xQSxykkjlPylB4A8XJ8vjDu3ZuFe+RvrFunR2fX7vgxEqcypiYDGBr2Y+j... | [
"line",
"ray",
"line segment"
] | null | 1 |
math | pre-k | represent-numbers-with-shapes-up-to-3 | true | false | Which group has 2 stars? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAIJklEQVR4nO3dsU/baBzG8SekRXKO3CGl4tTKlpDoGQnpVLYK1qywZiUrrF5h7Z8AKzNj25UVpE5hbGilSkF3vbZBUaFG5Rr5Bp9pACcksY39+/n5LL0eV+P38pXft/EbXPA8z/t4CbxzgbMu8MMDUeY8KADlIvBHCfh9Eih8/O55b76mfVpEw3v+K/Dg2PV/83gSmP/Fr5ooa866wNtvwN+XQNMFJr7+8L/AaCnLykW/UQA47wIT3Z4vEGVZ0Oi/HjCR7qkQjYf... | 1 |
math | grade-7 | perimeter-and-area-changes-in-scale | false | true | Look at this square: If the side lengths are quadrupled, then which of the following statements about its area will be true? | "iVBORw0KGgoAAAANSUhEUgAAABoAAAAOCAYAAAAxDQxDAAAB2klEQVR4nN2UMWsiURSFPxODoxNwJJBGxMJCbMRKSGFnUIY0Mp2dhUkj2AgJ6YRobUorwUqbqULID4igSFIELCwSSBXQZqZyAmbuFlkGFhfcIljsgQvvwHnvcN+57/lERNgB9nZh4hldXV1xcHCAoihevby8/LyRZVl0Oh0cx/EqnU7/qJEfwLZtwuHwVrFlWZyfnzMejzk8POT29pbT01NKpRKZTIbpdMpsNqNSqRAMBrm/v+fj44PhcAgiIsViUQqFgsRiMYnH49J... | [
"The ratio of the new area to the old area will be 9:1.",
"The ratio of the new area to the old area will be 16:1.",
"The ratio of the new area to the old area will be 4:1.",
"The ratio of the new area to the old area will be 64:1."
] | null | 1 |
math | grade-5 | regular-and-irregular-polygons | false | true | Is this shape a regular polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD6CAYAAACbKDARAAAeOElEQVR4nO3deZhcBZ3u8ffUOVVdvSUhS6c73RVCFoPICMoSgs4wAz7gwuAMDg+LIJoVdNRxZu5cd8dtrqPe8Y5XgXQWFWYUHcXBfXlQGWYISLgjokZIV5GkOp2NhGy9VNc5de4f55yqSuikt+quqnO+n3+ap0U9kNTzvP3L77w/w3VdVwAAAAAqIlbtBwAAAADChIANAAAAVBABGwAAAKggAjYAAABQQQRsAAAAoIII2AAAAEAFEbABAACACiJgAwAAABVEwAaqYOe... | [
"yes",
"no"
] | null | 0 |
math | grade-5 | scalene-isosceles-and-equilateral-triangles | false | true | Is this triangle isosceles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADOCAYAAAAEw3WqAAAaQElEQVR4nO3de3SU1b3G8SeTEEJCIBDkkkAiiQhWqCRA2p7S1qbrKCJQ24otGmot1tNjPFat5SJYQG4qUk6leixFpeVWRYWiB0EwgtTWYwiE+yXcoSjIPffLzJw/JhmJM0BIZvLO7Pf7WStLkrzMu1nLP56112/vJ8LtdrsFAAAAICAcVi8AAAAAMEmU1QuAve3du1cFBQUqLCxUfn6+Nm7cqIyMDK1fv97qpQEAADRKBCMiaA5ut1tFRUUqKCjwfm3evFnnz5/3ebZ... | [
"no",
"yes"
] | null | 0 |
math | kindergarten | rectangles | true | false | Which shape is a rectangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAHH0lEQVR4nO2dTW8TVxSGj5PAgkIrVVWr/oAWqeq2YtN/0p/SXxBAsCBs+FgRQIEgwQKCBAIhQEiwIuLDaYgTUJRJUeJE2I7MdDLThQFBiBOPfe+595zzPqv4+yp64oyv3zNvpSiKYjklerVB1NgkygoCYGBGKkQHhol+2Uf0016iyvL7onj8LvSygGYOfUs0MrvRufDzXqKD33QsBGBQGptEMy2iJCX6Z4No6F3WuQGSAZccGO44RUTU3CQa2vzsBgBc8tGp/wq... | 1 |
science | grade-7 | use-data-to-describe-climates | false | true | Which statement best describes the climate of Mexico City? Hint: Summers in the Northern Hemisphere occur in June, July, and August. Winters in the Northern Hemisphere occur in December, January, and February. Mexico City, Mexico, is a city in North America. It is located in the Northern Hemisphere. It has an oceanic s... | "iVBORw0KGgoAAAANSUhEUgAAAtgAAALOCAYAAACTXGSDAAD5K0lEQVR4nOzdd3hU55n///fMqPcuoUYRQkIIhEQRiGaMwdiigwtxI3a8thOvSeJ8Uxx7kyvFm99mnWRdsrvJJsYlccEGbEQzVXTRJIRAAiFAjaLey7Tn94eYg4SEEWakEfb9uq7EaObMnFtzjs585pmn6JRSCiGEEEIIIYRd6B1dgBBCCCGEEF8nErC/gszMTHQ6HTqdjpSUFEeXI76BVq1ahU6nY+zYsbf9XEFBQdr5vH79+i73mc1m/Pz8tPu3bdt22/vrbMWKFeh... | [
"Summers have higher temperatures and slightly less precipitation than winters.",
"Winters have higher temperatures and less precipitation than summers.",
"Summers have more precipitation and higher temperatures than winters on average."
] | null | 2 |
math | grade-8 | identify-similar-triangles | false | true | Are these shapes similar? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAC0CAYAAACuelsNAAAy4ElEQVR4nO3de3zO9f/H8cd2bXZkxjZzPp+PRaxI5nyKJDkWQjmUww85JAxfp1IOiRRSkpSUQw5fTH0j55xGjEZOsw0zNjtfvz8uLsbI4do+l+15v912267P9Tm8rqZrz733+rzfDmaz2YyIiIiIiNiEo9EFiIiIiIhkJQrYIiIiIiI2pIAtIiIiImJDCtgiIk+g8ePHU6BAAfLmzUvHjh25du0aAAEBAbi4uODq6oqrqyv+/v4GVyoikv0oYItItrFo0SLq1q171/b... | [
"no",
"yes"
] | null | 0 |
science | grade-4 | compare-properties-of-materials | true | false | Which would smell the most? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAAs80lEQVR4nO2daWwb6XnHf8ObIimKokTqviVbli3f18b2Jt0N0iIpgnabBL1voB/aD0W3QLGLHugWaNGiXxZIA+wW6ZcARRCkTbJIukW7cdb2ri3LtizbOixZh3VTJ8X7nn5QZ3ZIUbJsi+LInj8w4HBIUTPDH5/nfZ73ed9X6F0XxQM2cOjRpGlPFUzDwzDMJ8BlgAtlG8d1GpCaiiWHHg7YNvZD6c+O6zQgNRVTEn9J8bNjuuKciiZNW0uDUpPqpEGpSXXSoNS... | 2 |
science | grade-8 | identify-ecosystems | true | false | Select the temperate deciduous forest ecosystem. This ecosystem has:
a small amount of rain
dry, thin soil
many different types of organisms This ecosystem has:
year-round rain and warm temperatures
soil that is poor in nutrients
many different types of organisms This ecosystem has:
warm, wet summers and cold, wet wint... | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAp8AAACtCAYAAAD2xRSHAAEAAElEQVR4nOz9d7zld33f+75+va6+dq/TNZoZtVFHSAIkYYML2BjMBWMOJjiOg8u1nUvic+JHfJxjYuLEAdsxjn3cuGAIRrYxBgESIAkVVGc0ve3eVi+/Xu8fG+tkXOPcYyuPw3r+sx+//Sv7u/as7+z3+v2+389XeKaf54csKEiMjIyMjIyMjIyM/IMYpnDeBWGQ5PkoeI6MjIyMjIyMjPxDG6Yg5Hmev9INGRkZGRkZGRkZ+dYg/7cbf37awtDGaDcUCuYCaWI... | 2 |
math | pre-k | represent-numbers-with-pictures-up-to-5 | true | false | Which shows 2? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAcaUlEQVR4nO3df2wkd33/8ef83l/+ffad76d9l1x++UouaQoNhaYkEqQpPxo1gJoS9UeKihqhlpaoVUtRoQq0TaNStSAUqGiVtjQEcfAVqUJVIUqiBHJJEziR3I9w57vcD9vnn/trfs/3j41/r8+79trj3Xk/pFPuYntnXp557X7mszM7ShRF0SUXTpUgH4AfIYTYILoCbRpcnYHtJiiXnCj64UzcqyVE8ry5HfSTpco/+k24JltppxBiY+QDOF6Eiy6cKIE641e... | 1 |
math | calculus | identify-graphs-of-continuous-functions | false | true | Is the function f(x) continuous? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AAB6o0lEQVR4nO3de3xU9Z0//teZW2Zyv18IJAgIEiQoiIoS0WKVilqhZbGtbW23l+22dre/breXX7/d3Za6/a7V/ty1rtvdrtjLrpXWSwUjoiBgEIEIgUSuEUIu5DLJZDL3c/39MZmBcJ3JnDOX5PV8PHxIJmde82aYOfM+n/mczxE0TdNARERERES6MKW6ACIiIiKiiYQNNhERERGRjthgExERERHpiA020SSydetWTJ8+HStXrkx1KURERBOWwJMciSaPO++8E5/97Gf... | [
"no",
"yes"
] | null | 0 |
math | grade-5 | scalene-isosceles-and-equilateral-triangles | false | true | Is this triangle scalene? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADDCAYAAAC4XWZ0AAAm50lEQVR4nO3de1yUdd7/8TeHUUZoMEGzPIaZgYIogoE/zFA3SRxS2q01K83SNDMPS3baXWvL7OTuZq3dd7W2aZb3445dwZJ2c+3GQoESlVNFoqNRaJAyoqDD4feHyUYeEhm4ZuD1fDz6o7lgrnc9+uPtt891fTwaGhoaBAAAAMApPI0OAAAAALQnTQq21WpVXFyc9uzZY1QeAAAAwK15/HhEpHv37iovL5fZbNYLL7ygOXPmGJkNAAAAcDtNTrAjIyMlSdXV1Zo7d67... | [
"no",
"yes"
] | null | 1 |
science | grade-3 | identify-rocks-using-properties | true | false | Select the one substance that is not a rock. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAANcAAAEGCAYAAAD2aACLAAEAAElEQVR4nOz9d5Ql93neiX/qVtXNOd/OeTpMzgkZIAFGWZRM7bEly7Jl7sq/XVmyZXt9vD4+9sryes+xLVuyFda0SAWKAkmRBEhkDAYYTJ6e6Zxzvjmnqrr1+6N6LgAGW6IEkgLnOafR3bd70Lf71lPf7/d9n/d5hFs5XT/gAJfIAzzAA3wPKGgwV4KdOvgkuOg1Hjc9INYDPMBfDC4RDjiMj4vaO4+bHhDrAR7gL477PFL0dx4z/WCeygM8wAcfD8j1AA/wPuE... | 2 |
math | grade-5 | identify-parallelograms | false | true | Is this quadrilateral a parallelogram? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAB1CAYAAAB0zpYcAAAL2UlEQVR4nO3de2yV9R3H8c9zzumFUirFjuoKKTe1Ishlbc3CTEbM/AOWSMUmkmZb3SRgUHGImKgUKGCiKBOVIdHMGtNgglBcgskkhkRlG7Zyh6BCgdAOayqF0vs5Pc/+cPuNMJRLn3N+5znn/frv803T55P+00/a01PHdV1XAAAAADwRsF0AAAAASCYMbAAAAMBDDGwAAADAQwxsAAAAwEMMbAAAAMBDDGwAAADAQwxsAAAAwEMh2wVSzT9a/qq/nf6LskI5Cjnptus... | [
"yes",
"no"
] | null | 1 |
math | grade-8 | congruent-triangles-sss-sas-and-asa | false | true | Which rule explains why these triangles are congruent? | "iVBORw0KGgoAAAANSUhEUgAAAPUAAAF/CAYAAACR7Y9vAAA0JUlEQVR4nO3deViUVf8/8PesMOymhTuoaO7gCpomWomaa2WWWupjWj222PbLFr9qPtn+SLvaIpTlU6ZimfuCZoyQIuCGigqYuMewzT5z//44DDMoO8Pcy3xe1+U1OBtH4T3n3J/7nPvIOI7jQAiRDDnfDSCEuBeFmhCJoVCLVI8ePTBy5Mhb7k9KSoJGo8EjjzwCs9nMQ8sI3yjUIlRUVISTJ09i0KBBle7/5ptv8NBDD+HJJ5/E2rVroVareWoh4ROFWoS0Wi04jsP... | [
"SSS",
"These triangles cannot be proven congruent.",
"SAS",
"ASA"
] | null | 1 |
math | algebra-2 | 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 | [
"iVBORw0KGgoAAAANSUhEUgAAAUYAAAFGCAYAAAAW1zbwAAAr5UlEQVR4nO3de1Bb14E/8O+VxMtGIig2nuDY0CCCcUz8IIjIsTpxplUzu9nZaSdOSJukW0jbLAmOu500yY47sG7WO6pdT+PYruNpwmR2l8ZO2jy2m6k3v61ddh0M8hBSY2wHWIMdSC1iYSPFEpLQ/f2h6BpdEAi4esH3M5Mx93Kjc8Tjy7nnnHuOIIqi+Bcv0HMdcI4BfhFERAuKRgC0aqB4EbAsHRD+MiqKbSOJrhYRUXKo1AGa7uvBg1vSgZLFwdQkIlpInGP... | 0 |
math | grade-8 | identify-trends-with-scatter-plots | false | true | Does this scatter plot show a positive trend, a negative trend, or no trend? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFhCAYAAABK/t0lAAAho0lEQVR4nO3df3CV9Z0v8E+AKgSUDD+i/FoDKrEaLmFDW5BZCcvevbo2Sju3BdedihRqddeqtd3WbkezrbZs665sqdpaq9jairusVdmxdGw11PUKLqcehmiJ15JgUDGCRiFAqXDuH9TcphB+nSfn5Jy8XjPOcJ5vyOed8Y/z5pvveZ6STCaTCQAAIBH98h0AAACKiYINAAAJUrABACBBCjYAACRIwQYAgAQp2AAAkCAFGwAAEpSzgr1nz57Ys2dPrsYBAEBe5Kxgp9P... | [
"no trend",
"negative trend",
"positive trend"
] | null | 0 |
math | grade-4 | parallel-perpendicular-and-intersecting-lines | false | true | Are these lines parallel? | "iVBORw0KGgoAAAANSUhEUgAAAIEAAABbCAYAAABUBeYZAAAIAklEQVR4nO2dWVBTVxzGvysQwiYttlorVVtcQEsLVSoSQRNaF1Qk0TpurURfukxn+tLWPvbFLtOH+qBPrcHdLiYsotWpiWyixXXoQAeqlRQboUCJ0bDG24eYK5iNaO5+fo+HhJwZf5Lwne/8oWiapkGQNeP43gCBf4gEBCIBAYjkewOE8DFhYXHQxyTExaBiz2dInzWVWSM/CWRETLTCSwAAoMhvB9Kho9uOH07WocRkQds//8LzL0tRQLQiCuW7d2D+yylezyNvBxK... | [
"no",
"yes"
] | null | 1 |
math | grade-1 | rhombuses | true | false | Which shape is a rhombus? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAIHUlEQVR4nO2du28TWRSHfzMeLCuLCRAgidkq0u4WgQIKUiClQUpDmkiwLPyBsDykNKGJRBOJghRLARQsq1TgJIB5xGAZrz13i0l2jdePmdzxvfece74usgL38XkeZ84vEyil1E4L+KsB1DtAW0EQtIkCoFwAfpoApotAsPNNqc0928MSOLNwDIheNZIfZovALz8kFgqCLvUO8PIrsN0C/mwA4V47+UAkE/KkXEicAoAvHSDsdH0gCHly4NTfCgjtDkXwBRFNMIK... | 0 |
math | grade-3 | select-fractions-equivalent-to-whole-numbers-using-models | false | true | Count the equal parts. What fraction does this picture show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAA9QElEQVR4nO3de3hT55Xo/69jW0KyFAt8ixQcCwx2ISEWEU1CktbKrR1aKEraJgOZDibtMU0vgxMynXbaFDGZOdP2B4mZ9jQHz8wPMx2gTZtiAk3a3JCTFHJTkAM1scEgxyDHxgYpsmVsy+j88UqyfCMkIRd51ud59Ghra2tra69/ll+vd71p0Wg0ihBCCCGEEOKCuOjjvgAhhBBCCCEmE0mwhRBCCCGEuIAkwRZCCCGEEOICyvi4L+D9aG5oIBQIAGDMzqbEZsNTXz/... | [
"4/2",
"8/2",
"2/2",
"8/4"
] | null | 3 |
math | grade-3 | match-mixed-numbers-to-models | false | true | Which mixed number is shown? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAAC4UlEQVR4nO3YwU1UURiG4R9DQgXuZqP0oC1Qgw2Y0AA10ACJDVgDLVgErmZnBa6OG03YwBB542XweXaTu/km/+bNOVlrrQEAABKnMzM/vnyan9+/bb3lv3b2/uO8/fz1we9utL1DNwIAmJl5MzPC7QU4dAM32p4bAABPcXr/x+7icqsdz7K/vZmZ49//FMf+H3fXdxsv+Tv7q/OtJwAAR+LN1gMAAOA1EdgAABAS2AAAEBLYAAAQEtgAABAS2AAAEBLYAAAQEtgAABA... | [
"2 1/4",
"3 1/5",
"1 1/4",
"1 1/5"
] | null | 2 |
engineer | grade-6 | evaluate-tests-of-engineering-design-solutions | false | true | Which of the following could Jennifer's test show? Jennifer rode to work on her bicycle. She read that thinner bike tires could make bikes ride more quickly. But thin tires could also make her bike ride less comfortable. To decide which tires to use, Jennifer picked out three types of thin tires at a bike shop. She put... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAEICAYAAAA0p80lAAEAAElEQVR4nOz9WbCla3rXif2ed/i+b017zunMdYaaVVWSECpVYTVISLRomjZNEG7jvnOEAwcXjvANbd8YR9gRjsBgwBduA2HcTCYaCeQGJBBIKiEJVKpRVadODafqjJl5MnfmntZewze8gy+ed629TxWCMO7mlCP4IvbJPDt3rtx7rW897/P8p0f+9J/+05n/cP2H6z9c/+H6/6PrL/yFv/Ce/LsOoLnzy3hv8d4iJpEZyDmAS1gr9GGgaRqmkz2aZozYCsEi4hARVpc... | [
"which tires would make her trip to work fastest",
"which tires would be the most comfortable to ride with"
] | null | 1 |
math | grade-2 | which-tally-chart-is-correct | true | true | Adam had a cookout with his team. They had this food. Which tally chart shows the right number of each food? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAABud0lEQVR4nO3dd5hcZ3n38e/pU3dnu3q1ZVvuBWNcMNgGF4rpJQkOxIbQS4BQAoRAwgsBQoAADmA7dnBsinHBYGxwkY2bXORuWb2sVrvaNjv19PP+MatZjWZVVtqiXd2f69JlzTlnZp5nsgq/efY+96NEURQhhBBCCCGEGBfqVA9ACCGEEEKImUQCthBCCCGEEONIArYQQgghhBDjSAK2EEIIIYQQ40gCthBCCCGEEONIArYQQgghhBDjSAK2EEIIIYQQ40gCthBCCCG... | null | [
"iVBORw0KGgoAAAANSUhEUgAABHAAAAEOCAYAAADhZuDMAAC+d0lEQVR4nOzdd5xcVd3H8c9tU3d2Z3t6JSEJofcOQWlSRBGwggIKFhQVVFQU9eFBxUdRQaQKioqCdNBQQoIQSiCEkpDet2Tb7NTb7/PHJJNsZtPLZje/9+u1r+zce+6dc4Yl2fnOOb+jBEEQIIQQQgghhNgpFEXp6y4IIYQYgNS+7oAQQgghhBBCCCGE2DwJcIQQQgghhBBCCCH2cBLgCCGEEEIIIYQQQuzhJMARQgghhBBCCCGE2MNJgCOEEEIIIYQQQgixh5M... | 0 |
math | pre-k | count-sides-and-corners | true | false | Which shape has 3 corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAFSUlEQVR4nO3dUWvbVhiH8b+tOO662qMFb7jYxbnY9g3c739VaD9B10FCY5IMQwt2m82OVe3CNZjh1dXROe/hTZ7fXSmOdPEg6UhHR62qqqqbtfTnrbQspU0loLGTltQrpF8fS7+cSq2bVVW9XuTeLdxnL/vSybvb7T+Gp9LvP24rBJpaltLbz9L1WvrjVmovNtv/IDLE1Cu2TUnSp1Jql3v/AcS0a+quktp5dwUPBaHBBKHBBKHBBKHBBKHBBKHBBKHBBKHBBKH... | 1 |
math | grade-5 | mean-find-the-missing-number | false | true | Maggie has the following data: If the mean is 40, which number could t be? | "iVBORw0KGgoAAAANSUhEUgAAATAAAAAkCAYAAAAOy2bKAAAHvklEQVR4nO3cfWxV9RnA8e8995W+UPpCC7W1hVJAGsqrMsYUGJaZTjOnG7goBJexkC1TFtyy+LKok2STjcQxzIxzCjKCGCdiRCYKMtx4De+UQgttgb5R7qXtbW97X8/+uO2lF4sp6zncc8zzSfrHOT0557nP73ef33n7XYuqqipAKALdAYiooCKEEMZiARQLuBxgU3rWqaqqdgfBH0pobEIIMWBOG7jsoIQiUryEEObiD0WvGhV/MNGhCCHEzfMHQQlHEh2GEELcvHA... | [
"28",
"44"
] | null | 0 |
math | grade-1 | select-three-dimensional-shapes | true | false | Which shape is a cone? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAXZUlEQVR4nO2dX2wTV77Hv2n+OcGxzdrOH7BJqGxDdkGZBpa9RNBSgnSblmqh0obtviR0H/b2StvSZXUfgq4apAsrXaksdFfq9qGQPC2bSrfpJht6dQmbFghXWUgcgTbEziUOk2yC/yj+V8fOH+U+TM4kjp0SyIxnxj6fl4TxMD7x+fjM7/zm/MlaXFxcnJoFRiJAaAGYXwSFIjtysoCibMBaCJTkAVlTscXFvqDUxaJQ1s+PNECOM8L9oywP2LGJs5pCkRuhBWD... | 2 |
math | pre-k | triangles | true | false | Which shape is a triangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJIAAACTCAYAAABlJ0ArAAALIUlEQVR4nO2dfWwcRxmHfzO7vjufz3bs80ccJ44dN3ZQK5EgoqakTQMRqKopUkQlUJEqhNo/gKoC1AoJ1ApRVAm1gERRJT6EEAIqKEFIgVKgRCTQUPotREIdJ3HsJLVzOTs+n33nO+/u8MfGyKWFdmdnd2f33kc6KefL3e7tPPfOuzPvzjIhhJitA6crQNkGLAGCeFtMBrQawPYs0JsC2GxNiOcXo94tIs5c3waYExX3SV8KGG1xLSOIt6NsA+PLwEwdOFUB+KL... | 1 |
math | grade-2 | find-the-next-shape-in-a-repeating-pattern | true | true | What shape comes next? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAD1CAYAAAAlI4EUAAAcC0lEQVR4nO3dS2xc53nG8eecMzO8SpTkWIolIXbiKClgw24TOw4QO4mBpkbaorsCadEssmhRZBMgaIEWTVA0CZBsEqCbAu2mC2fhAF3YSH1TZbuSrUSK3KimJFsUTYlySUokrSElijOcObcuRiOSFknNGZ7rN/8fEBiIyJlPrx8eP/zmXKwwDEMBAAAAMIKd9QIAAAAAxIeCDwAAABiEgg8AAAAYhIIPAAAAGISCDwAAABiEgg8AAAAYhIIPAAAAGISCDwAAABiEgg8... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAz4AAAD1CAYAAACRDCAyAAAg8UlEQVR4nO3dXWxc553f8d8580JyRJG0EkuWJSTedZwsYMNuN846QOzdGO1ukN2idwWyRfdiL3Zb7E2ARQu0aIKimwCbm12gNwXam144FwmwFxKytmVVTio53lCRa68p0RL1YpMuORJJa0iL5JAz5+XpxYiiaA0pnuF5feb7AYIgITXz+J+fTuY355znOMYYIwAAAABWcBwn6yXkkpv1AgAAAAAgaRQfAAAAANaj+AAAAACwHsUHAAAAgPUoPgAAAACsR/EBAAA... | 1 |
math | algebra-2 | describe-linear-and-exponential-growth-and-decay | false | true | How does f(t) change over the interval from t=5 to t=7? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABxOklEQVR4nO3deXxU9b038M+ZM5M9kJBANkgCIrQgoChaEBQvVq1WW2h7UeuC1bb2dnv6em7VqrUulHqf2+VVr/Vpe28fl15bKxW9FYwUBYWCgkQIJCCGJGQBskzWWc/6e/4YEglbZmB+OTPJ5/2PZpjzyTfnzJz5znfOnKMIIQSIiIiIiCguXE4XQEREREQ0krDBJiIiIiKKIzbYRERERERxxAabiAbZuHEjysvLccMNNwAAbrzxRrz66qsAgKNHj2L9+vV45ZVXcOO... | [
"f(t) increases by 400%",
"f(t) increases by 4",
"f(t) increases by 6",
"f(t) increases by 100%"
] | null | 1 |
math | grade-2 | read-a-thermometer | false | true | What is the temperature? | "iVBORw0KGgoAAAANSUhEUgAAALkAAAEOCAYAAADVFbYlAAASWUlEQVR4nO3dT2wj130H8C/1Z20rG2s2UFwv0Egj70UO1tBIKWIDlSESBexLWs0U8MlwRRbYAEXRkoRPPgQiY6A+FAXJFr10gZAq4EsvHPXPwQYKDmv5YBeRxrADKwWcHdFtBbhsO1pv6V1RInugyXA05HopDknN4/dz06NW8xb48uHN4/x+DNTr9TqIBDYx6gkQDdrUKC5qWRYsy4JhGI5xWZYhyzKCweAopkWCCgxru2KaJra3t6HrOg7/4wtMzM4jMDuPwPS3Wr9... | [
"15°C",
"20°C",
"10°C",
"25°C"
] | null | 0 |
math | pre-k | count-sides | true | false | Which shape has 3 sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAE70lEQVR4nO3dXU8UVwDG8Wd5i/Glje22TT9A24/gB9CYGEOMnxHhhguSojEkmpgYLpTEOy5cqtxs7C4sooyLyzLD9GK71lhbaTn7zJyZ/+9GCQYO5u+c5YnGRp7neWco/XYoJZmU5gLObKYhXZqWfjov/TAnNTpHef70oOhjocqufCXNbB2O3vhxTvrlwqhC4KySTHrel34fSq1DaeogHb2DyBDSpelRU5L0LpOmso/eAYQ0buo4l6aKPQrqgtBgQWiwIDRYEBo... | 2 |
math | grade-3 | fractions-of-a-group-unit-fractions | false | true | What fraction of the shapes are circles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACUCAYAAACp1l47AAAMMklEQVR4nO3dz29c5bnA8WcYj2f8a2wnYJMQO0gVThcgwYIFiKqtQOoilMVtpUpZlS1d0vtftFu2ZMWuLKBZIF3USjfKXbAAKXeBjVSB3RDsksb2OOP54fHcxcRG5arFpu+cM575fLbJjJ/31Uj+5uSdcwrdbrcbAABAEo/kPQAAAAwTgQ0AAAkJbAAASEhgAwBAQgIbAAASEtgAAJCQwAYAgIQENgAAJCSwAQAgIYENAAAJCWwAAEho7LQv+OmHN+LPW3f7MUumfrJ... | [
"1/4",
"1/6",
"1/3",
"1/8"
] | null | 3 |
math | grade-2 | identify-the-fraction | false | true | What fraction of the shape is blue? | "iVBORw0KGgoAAAANSUhEUgAAAQQAAABkCAYAAABgi07kAAAZtklEQVR4nO2de1iU55n/Py8zMsAQZpTDgIgyg8GIghEPATVpK+5loo0xidteje6hiUmzadOsbrptf22aq7um3W2T2EPSq81hs/trte1Gf4kmMU2DJm0iaASigKgoM4hyGA4yAwzHGd7fHy8zcoaBORGfz18JzLzvPVy+33nu+/4+9yPJsiwjEAgEgDrYAUwGc72DMosNR7eLji4n5voOz+/KLPYhr9VGqDAlRXv+P8ukJ0GvwTA7gkyjDoBeF4SrAhO7QDCTkEJxhVB... | [
"1/6",
"2/8",
"2/6",
"4/6"
] | null | 2 |
math | grade-3 | parallel-sides-in-quadrilaterals | false | true | How many pairs of opposite sides are parallel? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABtCAYAAACbSxbqAAAQ8klEQVR4nO3dfWxVZYLH8d859+VcoAp2ZqpUEGmsQkUs8lKsLaiTxbgbwiaO+IdC3M0QMUuMJDtp1tmdjZqZLOEPyQR31kAc44yTUTTZ7mRihtXdgRaYFqql4C0vI9hBBWthi7Zwz73n3rN/tPQcouWt9/bcl+/nv0t69Oltb/q9z33O8xiu67oCAAAAkBVm0AMAAAAAigmBDQAAAGQRgQ0AAABkEYENAAAAZBGBDQAAAGQRgQ0AAABkEYENAAAAZFE46AGUmt+eSuv... | [
"no pairs",
"1 pair",
"2 pairs"
] | null | 1 |
math | grade-8 | mean-median-mode-and-range-find-the-missing-number | false | true | Ethan has the following data: If the median is 8, which number could d be? | "iVBORw0KGgoAAAANSUhEUgAAAXAAAAAkCAYAAACQcWFqAAAJ40lEQVR4nO3de1CVdR7H8fd5zuF+EZCLCspFVCCUNPGGNyrLstzKcbrsZqbTuJVd3NqZ3Xa6rtXuTlOb7VhtTVlZW5qrJpqKaV4BE0QURfFCgCFylDscOJdn/wApthLK5+E8Z+b7+o8fZ57Pd36H3/c8N55jUlVVBbC7XDQ7nLhUFRUhhBBGYgIUk4kAixkvRekYU1VVbXE4aXU63VudEEKIXvEzm/G3mFHsLlWatxBCeJBWpxO7S0VpdTrcXYsQQohfqNXpQHG45Iy... | [
"14",
"6"
] | null | 1 |
science | grade-4 | evaluate-natural-energy-sources | true | false | Below are three examples of using energy from natural resources. Select the use of energy that did not add to air pollution. Hint: Burning a material such as wood, oil, or coal releases chemicals that add to air pollution. A solar heater on the roof of a house warmed water that was used for bathing and cleaning. A cand... | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAp8AAADOCAYAAAB4pWlzAADzbUlEQVR4nOz9d7wsV3XmD3/X3lUdTr5R9ypniSAkEQRYgEyykcDgH9GY4GEwIDNgwEYMYDCeMQMCG7AHMMbYgAQGM7YZwzjwEiyEwAIkQBIio5xvvid2d9Xe6/1j76qu7tMn3CCCqUefVnVX3BXO7aeftdaz5Kr9qqeNw6SlRo0aNWrUqFGjRo17BXMOfrAAMpur1sSzRo0aNWrUqFGjxr2NOQeiqvrTHkiNGjVq1KhRo0aNXwwk1Q+/+YI3rrqyiAxMh987FBE... | 1 |
math | grade-2 | identify-repeated-addition-in-arrays-sums-to-25 | false | true | Which addition statement describes the array? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACoCAYAAADabpntAAATwElEQVR4nO3dT2gUZ8DH8d/74ikNzIBCczDJQopeTPbJ0UR0pKDQENz0UpSmTG7+OWQOkeqhNUsLHqy4lxpvTqGk9GInlFxChdk2SY9O9BRBGNdLAgbGYu3xfQ9xl5gs1NnMbkL3+7kok515Hn6nHw/PPPM/09PT/6c2dOPGjR3XisXiHsxk79XLAgAAAI35372eAAAAAPBfcqD6n3ZZxXyfVWqyAAAAQKNYwQYAAAAyRMEGAAAAMkTBBgAAADJEwQYAAAAyRMEGAAA... | [
"4+4",
"1+1+1+1+1",
"5+5+5"
] | null | 0 |
math | grade-3 | compare-area-and-perimeter-of-two-figures | true | false | Which figure has a greater area? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAACgCAYAAADO4gjqAAAE70lEQVR4nO3d3yvseRzH8dcXI2vn7OZHpNQk4UKnFKW4MH4lyoViuXDp0s+muVCrFMpfoCiXMrbcHNdS7pyaRErMuiGtzYTBsQ7Gdy/m0BFnNz++vjPzej1qGl/fr+ldz/k004z6GKZpmgdXwJ8XwFkYuDEhcSTJAD4kAgWpQHYyYBx8Nc3Pp3aPJe+h/BcgKXAROchJBop+jjwbJH6chYGtL8BfV8D2BZBwehM5odjx6UNipC0AnIeBhPB3JyQ+3bW9NoEEe0e... | 0 |
math | algebra-1 | special-right-triangles | false | true | Find z. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD/CAYAAADL5aGiAAArxklEQVR4nO3df3TU9Z3v8dd3MpNMMpPMGJKUhJ8DJMaEQSy421rw2rVHqHfPAhZ6aNctKT1Usykby5W9ixd768ot3ouLpGkaNQsL2vVwj9QfZ7d7xKO216CerXBEhqQxAQIGE01IzOQH+TXJ9/4RA6Ui5Mck35nk+TjHI5jv9/N9z/GfF19e8/kYpmmaAgAAABAWNqsHAAAAACYTAjYAAAAQRgRsAAAAIIwI2AAAAEAYEbABAACAMCJgAwAAAGFEwAYAAADCiIANAAA... | [
"24 feet",
"$4 \\sqrt{3}$ feet",
"6 feet",
"$6 \\sqrt{3}$ feet"
] | null | 2 |
math | algebra-1 | describe-linear-and-exponential-growth-and-decay | false | true | How does g(t) change over the interval from t=
–
3 to t=
–
1? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB2x0lEQVR4nO39eXxU9d03/r/ObJnsCQkEDAZkNysgUUAoUKlL1d6F6mU3WzCyVMTq1eXy6q/tdbc35fJb2WRRaxeXXr17XfWuelUxUhQUCgoSyUACQgyQBcg+mX3mnDPn/P7AyUUEJIHzyckkr+fj4cPHDHNe8845mTOvOTkzI+m6roOIiIiIiAxhMXsAIiIiIqKBhAWbiIiIiMhALNhERERERAZiwSaiHvvggw8wffp0KIoCAPjzn/+MY8eOobCwEG632+TpiIiI+ge... | [
"g(t) decreases by 1",
"g(t) decreases by 3",
"g(t) decreases by 2",
"g(t) increases by 2"
] | null | 2 |
math | grade-2 | select-figures-with-a-given-area | true | false | Which shape has an area of 8 square units? The shapes are made of unit squares. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKQAAACkCAYAAAAZtYVBAAADU0lEQVR4nO3cMW5UVxiG4f+Oxy7ABApElAWAK2rKWPRsgk2wBjbBIqAn0NKmMtDHKCmQbSxhZnRS3FgKkYKsKHfOx53naezRSPecM/P6yNU/tNba8UXV+/Oq03XVqhVszHKourFTdfda1Y97VcPx59benPTeFlQ9+KFq+e58fPHTXtXB9bFW2JTTddXRp6rfLqrenlctTlbjG2Kkhxs7Y3tVVWfrqsX6b29AD5ftfWlVi75bga8JkiiCJIogiSJIogiSKIIkiiC... | 0 |
science | grade-5 | compare-magnitudes-of-magnetic-forces | false | true | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | "iVBORw0KGgoAAAANSUhEUgAAAcgAAABdCAYAAAAhffauAAAUgklEQVR4nO3deXBUZbrH8W93ku4OAiFCgIQtQKCCkBmWACIMyCKLgkQWjReUoRTxilrjyFiOw/WiqFwda5RivC5QQRBkDMMygPGCgiCKLAkIYoAAATQLS8wCIelO0t33D4aMTJrQnfRG+H2qUpV0n/Oe9yxPntPvc/ocg9PpdCIiIiJXMQa6AyIiIsFICdIPvvvuOwwGw1U/JpOJ+Ph4nn/+eUpLSz1qb9KkSYwYMaJOffn++++Jj4+nWbNmdZpf5EYXLPGYmZnJvff... | [
"The magnitude of the magnetic force is smaller in Pair 1.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs."
] | null | 2 |
math | grade-1 | 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? | "iVBORw0KGgoAAAANSUhEUgAAAMYAAACECAYAAADLC1Q6AAA230lEQVR4nO29e5Rd1XXm+1t7n3PqXaoqqZBKBSoJBBICZDCygWBEsMHgdvAzgZuMuO046TjtGycjdu4YyXAy2kk7JCS5Dun4evjGw+1gJ233TdsyxjeAAzYWTyPJxiCEHhg9qyShUr3r1HnstWb/sdZ+nTolVUmnSir5fAzG1tpn19l77bPmmnN+c861lIgIddRRRwreuX6AOuo4H1EXjDrqqILMuX6AOn6+YQbH0QcGkeFJzNAEMjSJTBZRHc14nS2orla8pa34a7p... | [
"unlikely",
"certain",
"probable",
"impossible"
] | null | 0 |
math | grade-8 | describe-a-sequence-of-transformations | false | true | What combination of transformations is shown below? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEyCAYAAADA5Kd8AAAuUElEQVR4nO3deXxU9b3/8fcsmUlISDAYMAkhgCAgAoEo+6oWbrV1Q2t/4F5atYtSrbV6b/Vae+liRar1VnttvdrKrQuLIO6yQ9mGfVVAQswMEIjZl0lmzu+PIXFDsp3MSc68no+HjwfEmfN5p8QH73z6zTkOwzAMAQAAADCF0+oAAAAAgJ18oWAHAoGoB2CmvWZaNZeZ9ppp5VwAAFrLUX9EJBAIyO/3W50HAJSRkSG/36/c3FyrowAA0Gzu+l+kp6db8heaz+djpo1... | [
"reflection, then translation",
"reflection, then rotation",
"rotation, then translation",
"rotation, then reflection"
] | null | 2 |
math | algebra-2 | classify-variation | true | false | Which equation shows inverse variation? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJYAAAA6CAYAAABS36B3AAAFhUlEQVR4nO3db0hTexgH8O/ZyWnz6F6kV1dShOlVDM4oKiQEVy+M4FogDULojRFFKr3pRSGEUARGEf2RehETKqqjBnnJFxqUCYKjQFGxzAhaebs0fFHbarrx3Be7iytN3e48f7aeDxzmfnt+7hl8+Z3DOYdNICL6NAdMB4CvYSBEYCxhqwQgRwRKLECBGRA+BYncX/Rui6WTHbnAqjeByBObGfg9O5I6xhL1NQy89gN/zQFTAcD0JRR5gUPFkpEjRjIEAL4wYAr... | 1 |
math | grade-3 | correct-amount-of-change | false | true | You pay $3.18 to buy a map of Canada costing $3.15. You receive the following change:Is this the correct amount of change? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAA/CAYAAADaDb8WAAA4qElEQVR4nO3dd7ic53nf+e9b551eTu/9HBz0Xgl2iZREkbKsxLasxLt2HMUpTuwrTjZl14mTzbXX7mbTvE5WsR3Jii1FVicpir0TBED0etAOcHqdOdPf/uwfA9FOAssgCVGrxfPhHwDJ68LM78H8cc9z7ve+FSGEQJIkSZIkSZKkO0L9cb8BSZIkSZIkSfr/E1lgS5IkSZIkSdIdJAtsSZIkSZIkSbqDZIEtSZIkSZIkSXeQ/mG8iGfXqVarOI5NvVrFdx1q+UXcQKD... | [
"yes",
"no"
] | null | 0 |
science | grade-8 | 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. | "iVBORw0KGgoAAAANSUhEUgAAArwAAACtCAYAAABSr6xUAAArA0lEQVR4nO3deXxU5d338c+sCVmAsBOQRcIuguyiiGIF9a4Wq6i0ttXWpWK1G1p91LaP1vtW1KqglVoqjwtuiNZbS22raNmUfVWJhB0S1iRsSUhmef4YiCIhs2RmrnNOvu/Xa16VMJn5hV75nt9c5zrXcYXD4TAiIiIiIg7lNl2AiIiIiEgqqeGVk4wbNw6Xy3XCo3Xr1lx44YXMmzcvrtdat24dLpeLBQsWxF1HMBjkvvvuw+128+STT8b9/SIidmGF3A0Gg/zxj3+... | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | null | 1 |
science | grade-8 | identify-rocks-and-minerals | false | true | Fluorite has the following properties:
solid
glassy luster
not made by organisms
pure substance
found in nature
fixed crystal structure Is fluorite a mineral or a rock? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAACv3klEQVR4nOz916+t2Xnmi/1G+OLMK+5YtSsyVjGJVGCToiQqdh9fGOfAsC9twBe+t68MG7DhC/8FvjAOYHQDPqfVOC3J3Wr1kdTqbnVLlCiKpEgWi5V2DiuvGb84gi/GN+faxVAkVSJLJPcLbOyqtVeY65vjHW96nucV3nvPE3tiT+y7mnyvX8ATe2L/mO2JgzyxJ/YO9sRBntgTewd74iBP7Im9gz1xkCf2xN7BnjjIE3ti72BPHOSJPbF3sCcO8sSe2DvYEwd5Yk/... | [
"rock",
"mineral"
] | null | 1 |
math | grade-7 | identify-alternate-interior-and-alternate-exterior-angles | false | true | \line{SU} and \line{VX} are parallel lines. Which angles are alternate interior angles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD2CAYAAADs6vBqAAAdlElEQVR4nO3dfVRUBRrH8d8AQoo6GBi+tArpJoYmaW+QLdLW6mk1oE7tblpilqWrRVnW2m5Ze9RNU0kze3dMrK1Ep7Rj7KZo7sk0IFIrbV0Bsw5qJL6VlM3sHy6zTgwvyp25M9zv55xOce/QPPc5/fHz6bn32txut1sWVFNTI0mKiYkxtY5QRf8AAAB8CzO7ALM4HA45HA6zywhZ9A8AAMA3m1Un2AkJCbLZbCovLze7lJBE/wAAAHyz5ATb6XSqsrJSFRUVcjqdZpc... | [
"\\angle{STW} and \\angle{XWT}",
"\\angle{STW} and \\angle{UTR}",
"\\angle{STW} and \\angle{VWY}",
"\\angle{STW} and \\angle{UTW}"
] | null | 0 |
math | grade-3 | match-fractions-to-models-halves-thirds-and-fourths | true | false | Look at the colored part of each shape. Which shape shows one-half? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAVkElEQVR4nO2de2xb133HP5dPkRIpUtT7LVmSbfkpybLsOEmbpM3baYs+tq4o1qJd16bvpGnWNuiAbSk6DNiADiuKYX+0xdYUXdMVTZMmcRLHduxEdmxZsSXrYUukqDdFiZIoPu/l3R9XpB+1Y4tvWvoChESK95wjfvg79zx+5/cTZFmWp0Nw0QfLEogyG7qNpBHApIZmI5TpQJgOyvLJpUw3a0PpUJcZNMM+5UmFDjbnK9+GDd0+WpZgcAWmQjDkA9WSqPxhA/b... | 3 |
math | grade-8 | classify-quadrilaterals | false | true | What name best describes this shape? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADnCAYAAAAkYCFUAAAdu0lEQVR4nO3dXWxc953e8WdmzlCURJG0qZCWSHFeSCW2KVsiZxw6u0lLrIEWRRHIfdv2pkUuWrRFL+xc7F5n0Zu+XOy26MVie+M0CAq0aCGj210E2yI2sK5JeDi0YtGOly8zpEhTpEWLIimJ4pw5pxdnzrzEovk2Z+bMzPcDCEYyVHJsi+Bz/ud3fk/Atm1bAAAAAKoiWO8LAAAAAJoJARsAAACoIgI2AAAAUEUEbAAAAKCKCNgAAABAFRGwAQAAgCoiYAMAAABVRMA... | [
"rhombus",
"square",
"trapezoid",
"rectangle"
] | null | 0 |
math | grade-1 | flip-turn-and-slide | false | true | What has been done to this letter? | "iVBORw0KGgoAAAANSUhEUgAAAPoAAABkCAYAAACvgC0OAAAFD0lEQVR4nO3dQWibdRjH8aea1Yw5lpaJi4q16mB2h4K4i8Let956EQQv7akZ3opSEDyn14EXmbdC0lM9COs8bLfWVqeiTOJhONDJAmqnrfOdrc2aRv4estlB3vRN37xJ/u/7fD8wAsmbX/578/7at8u7p32O4xjXdSUKKysrYowR8sLnLS8vR5LVa67rWr2fteWlXNeVfD4fSeDs7KwYY8hrIy8pOK7synskkiQAVqPogAIUHVCAogMKUHRAAYoOKEDRAQUoOqAARQc... | [
"flip",
"turn",
"slide"
] | null | 1 |
math | grade-7 | which-is-the-better-coupon | true | false | Which coupon will save Jenna more money on a briefcase originally priced at $96? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAASYAAACRCAYAAABufBWjAAAmd0lEQVR4nO2de3gT15n/vzO6S8YWwrKNwRewDdjG2FziBGLAsCRxQkghG+ivlBTY9qHtJn1Kti1pSbcJ3U02t92wfZINzW+7IU1LG0hDbnRJSmNzTx1MAGMDwQb5im0Z3yVZt5n9YyRZska2NB7bI/t8nsePrTMzr45kzVfnvOc970uxLMu2OIAaK9DrBlwsCAQCYUyRU8AUGZClBRKVANViZ9nynvHuFoFAIHDcGQvIr1u5B9OVwFwdp1oEAoEwlvS6gWsW4JY... | 1 |
math | grade-3 | identify-equivalent-fractions-on-number-lines | false | true | Is 1/3 equivalent to 3/4 ? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABwCAYAAAAkAwevAAAS9ElEQVR4nO3df0zUd57H8dfIT0V+CVNwqIVqRZElddUgbFW803i1DU2r9aS1h55ntjY2jXd1/zD+ce0f58kfG101F+gfni3apPbudt2EbjarDdBlBwfYnoqn3oUWXR0RcJEiM+oMzv2hsFB/YRn4zHd4PhIi82VMXn98vjMv3ny+37EFAoGAwkRlZaXcbrfee+89TZw40XQcwKgrV67ok08+UV5enl566SXTcQDjqqqq1NzcrA0bNigtLc10HMAoj8ejffv26emnn9a... | [
"yes",
"no"
] | null | 1 |
math | grade-2 | place-value-models-up-to-hundreds | true | false | Which place-value model shows 198? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAY4AAACSCAYAAABSZy0oAAAY8klEQVR4nO3de4ws110n8G+939XdM3PH98a+tq99nTi2N6sEFBB4swiCiJaEx5KIZCFsNmjZ8IiDWHCQgGzChghBtN4/CEKwDpF2EYlAwJKwiD/YCKGItcNDKBC/gu/D13fe/ahnV1VX1/7RPTM9PV3tW9M93XPN9yON7/Xt0rfPvOpXp845dYSiKIrNFPhaBPg50CtARER0QBYARwIeMIE7VEDYTIriaW/ZzSIiotvBN7iA/EI0+J8LKvA6a1BViIiI9vk58Fw... | 0 |
math | grade-1 | rhombuses | true | false | Which shape is a rhombus? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAIHUlEQVR4nO2du28TWRSHfzMeLCuLCRAgidkq0u4WgQIKUiClQUpDmkiwLPyBsDykNKGJRBOJghRLARQsq1TgJIB5xGAZrz13i0l2jdePmdzxvfece74usgL38XkeZ84vEyil1E4L+KsB1DtAW0EQtIkCoFwAfpoApotAsPNNqc0928MSOLNwDIheNZIfZovALz8kFgqCLvUO8PIrsN0C/mwA4V47+UAkE/KkXEicAoAvHSDsdH0gCHly4NTfCgjtDkXwBRFNMIK... | 0 |
math | grade-3 | which-picture-shows-more | true | false | Which is more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAlYAAAGUCAYAAAD3bWw9AAEAAElEQVR4nOz9PYwkS5bvif3e24eFBYklzAACdKNUJhCEp+ZBgchYqWK0aFDJWqmSUmdr2VoVpVsjTV2JdbWb2mRLkyWxUiBxQ3tR0kYAFMK1dPADsNLcARIwwy65blzuw1A45h+RVbd7eqbx5nUxDlAVGREe/mGf5/zP/5zzb/7xH//xH7v/Hv7v/x38t/8B/od/5CxnOctZznKWs5zlLP8E+Xf/Bv6L/wz+F/8j+J/95/Bvuv/PP/7j//m/+de+rbOc5SxnOct... | 0 |
math | grade-8 | identify-trapezoids | false | true | Is this polygon a trapezoid? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACbCAYAAABYgOzuAAAaaklEQVR4nO3daZQc5Xn28auqepvRCO0bAkkWIIQQ2gBJYBBgbAtjwOwxJjhAEsfEW0wcOyfkVfLyhnPi2A5mSewQg2UnB+KFHYMMdiwkIUD7CCHEIpAQ0mhntM30VFfV834YqXpaI6FZqrt6+f++6HmeYaou4HC45567qyxjjBEAAACASNhxBwAAAACqCQU2AAAAECEKbAAAACBCFNgAAABAhCiwy83SpdKePXGnAAAAQA9RYJebW26RBg2Sbr2VQhsAAKACUWCXm+u... | [
"no",
"yes"
] | null | 0 |
math | grade-1 | names-and-values-of-common-coins | false | true | Which coin is this? | "iVBORw0KGgoAAAANSUhEUgAAAKsAAACrCAYAAAAZ6GwZAACBEklEQVR4nO19TUxbadL16VeDbWHsGCMwf+Mx0mCiD+yRgwybQJOFxQawEBsiCBsCmySKIiJWJAvCCgVFKGFDwsYhSjYRgrCJvIBANoDAkgEpmJFwezC/whiDEYZFvoXfKp57sUm6p6ene+YtKQoY/1zfW7eeek6dOvXD169f8X/2y+zg4ODrlStXfjg4OPgKALu7u8jMzAQARCIRaLVa/l9uV65c+eG3Pdo/vv3p330Av0cj5wPiTre1tYWNjQ0cHR0BAFZWVhAIBAA... | [
"quarter",
"penny",
"nickel",
"dime"
] | null | 2 |
math | grade-8 | identify-reflections-rotations-and-translations | false | true | Look at this shape: Which image shows a reflection? | "iVBORw0KGgoAAAANSUhEUgAABbAAAAC3CAYAAADD5XikAAAcSUlEQVR4nO3dbXCcdb038F/apE2bPtGW0l0HUKH3qDw3PaC3FBBoBdR7xvsGReeAzHgYRR1xFMYHXojvdOB+wQu9hRc6okeG4VkcGFqOByw+MGaLIKnjaREpnmuBSlvaNEmbNrlfxCzbkJKkua7dvXY/nxnGTUi/+3Nzwbbf/PhfbRExEgAAQCpGRvz2GgAA0jKr3gMAAAAAAMBEFNgAAAAAADQkBTYAAAAAAA1JgQ0AAAAAQENSYAMAAAAA0JAU2AAAAAAANCQFNgA... | [
"B",
"A",
"C"
] | null | 0 |
math | grade-8 | quadrants-and-axes | false | true | Look at the coordinate plane. Which quadrant is the point (4, – 1) in? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AAA0TUlEQVR4nO3df3DUdWL/8dcma0IS8gsCBDBErYAaAvJDficnh7QoFlFhPEbvpFKnOOPg3TA341DrtPZk7HToKf6YlvZG2pHWMYO1lws2ggghiFxAIEBggDsDGBJCyG82u8v++P5hN98ACezq+5PPfsLz8Zf7SXjnNW93P5/Xvve9u65wOBwWAAAAACMS7A4AAAAADCQUbAAAAMAgCjYAAABgEAUbuMUVFxfrk08+6b7929/+Vvfee69CoZB9oQAAcDAKNnCLmzhxoo4... | [
"Quadrant IV",
"Quadrant II",
"Quadrant III",
"Quadrant I"
] | null | 0 |
math | grade-1 | cubes-and-rectangular-prisms | true | false | Which shape is a cube? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAZK0lEQVR4nO2dW3Cb5ZmAH1tnS7EkO5FE7Nhu0ljsbLDbTTYxFyEc2nQGSHYvyF4USq843HRnYMrdTpl2etdO6SUUbraBXizcrFNgOJMws3FSA5WTnUV2k1qOCJISWZJlnSV7L379P5KtJDofv2eGMTr+X6zHr97v/U59m5ubm740/C0O0RxkNxEI2g51H+xQwf4BsGuhz5fa3Ly41upmCQTlc2QQ1Etx6cZdWnAaJasFgnYjmgN3DL5Jw2Ic+tey0gNCWkE7s0M... | 2 |
science | grade-8 | use-punnett-squares-to-calculate-probabilities-of-offspring-types | false | true | In a group of American curl cats, some individuals have curled ears and others have straight ears. In this group, the gene for the ear type trait has two alleles. The allele for curled ears (E) is dominant over the allele for straight ears (e). This Punnett square shows a cross between two American curl cats. What is t... | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAD6CAYAAADUdTPBAAAUCklEQVR4nO3de5CddZ3n8U93ujtJX0JId7hkiYTgZMEBBBJgcQcCBChYdHcFFccR1FEpC1222HG1ypH1L3GpGpmB2dqiLBUtxpVBFnGm0GJmCKuxuMQWVJYAS8DEkCu5kfS9T/fZPxKahISEkAOn+9evVxVVJ53zPM8vfP9555fnPKehWq1WAwAAFKGx3gsAAABqR+ADAEBBBD4AABRE4AMAQEEEPgAAFETgAwBAQQQ+AAAUROADAEBBBD4AABRE4AMAQEEEPgAAFET... | [
"2/4",
"3/4",
"0/4",
"1/4"
] | null | 0 |
math | grade-2 | which-shape-illustrates-the-fraction | true | false |
Look at the colored part of each shape. Which shape shows one-half? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAACj0lEQVR4nO3doW5TYRiH8f9pt4mxMRQEN0OxoKZIuAMcFzDBFUwj0FwBggvAcQckuCnsNgSO4ci6NVlp8yEOTQiOr6OH0+f5uaY56ds858sRTd42pZRyPk0+T5LxPJmVaI1sNMnuMHmwndzbSprz61KOL7oeS6twcDvZOJu0L+5vJQ9vtXeD1sd4npxcJV+nyekkGVzM2jeMvZ52h23bJLmcJ4P5b29oPS3a/ijJoNtRtGoGhzE4jMFhDA5jcBiDwxgcZqPmore... | 2 |
math | grade-1 | rhombuses | true | false | Which shape is a rhombus? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGHklEQVR4nO3dz2tcVRQH8O9MZlKorcnCKkI3FlQIWnDTgtA/wVUXQhbStSs3XQWhIFl148p1cRFw0Y3+CQUX2QitBGpKu6kYiYv8amAyM3kuHqOjvZO8N+++c8859/vZtGlI+vLme8/5JpmmnaIoip0T4NkxcDgGRgWIGut1gMsLwPsXgXcWgc7OoCg2D1JfFnl2802gt31cvvDuIvDhG2UKiZo6HANPXwF/nAC/HQPdg1H5CoaMYrq8UGYKAI7GQHc89QqimCa... | 0 |
math | grade-6 | nets-of-three-dimensional-figures | true | true | Which net will make this figure? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAARJ0lEQVR4nO2de1iUZfrHP8OAnBlUDirokFeulbXjSpe75q/FtTxXUJpuaaGCbK6iYKCQ4gym6ArKmNp6YiHT1NXUyENbKVApqaFgkgeSQyEoB0XGQU7D+/tjYkpD5TAnkM91zR8j8z7v1/nq/T73/Tz3g0gQBIFOzAYLUwswB/bt20d0dDQFBQWmlgLCQ8zly5eF0aNHC4DuFRERIajVapNpeigNUavVQmRkpM4ERztH4en+3rr3Hh4ews6dO02i7aEzZMeOHYKHh4c... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUkAAADlCAYAAADeIwWJAAAZbklEQVR4nO3deVxVdf7H8dcFcUERXHDLRM3dCnfTnIHJsjQdrbRlsrDEbUzFLdMysNxmcMHM3LKw9KdO5pamUyli4x6N9lDHQkVmFBcgFYRhv78/GO5k6hmRC+dyeD//uQ95XLifzwPPm7N8FxtgR1yG3W7nYhacSofUXMjRb0ekRJWzgZc7NPWE2uXBhkLSpVzMtHMoxewqRASgc1UoZ3YRcqPY9PzXuuWheeX8v2giUnJSc+HHNLiQBT+lg5vZBcmNUnLyXxW... | 0 |
math | grade-1 | time-and-clocks-word-problems | true | false |
Luna went sailing with her parents. They got on the boat at 8:00. They were on the boat for 3 hours. What time was it when Luna and her parents got off the boat? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAhiklEQVR4nO2deXhTVd7HP0mTNG2SpmVpWmpblraiQGkRFKVleZFFXoqgMIijIyP4zjsDKDguoGVQC4Iz+gCCM+8oOjiOAhZQ2RdBlo6CjHQRFNoCbQWSFEqbJmmz3/eP0ECgQLOUsvTzPHl6e5dzTu4395xzz/n9fkckCIKgs0FpHRid4BBo5RZCIgJVCCSHg0YGIp1VEL6vbelitXI9uC8CJCV17n9iZXCnwv1raOXWweiEo2bQ2qC4DsS1DveBVrFvTVQhbm0... | 1 |
math | grade-5 | range-find-the-missing-number | false | true | Alexandra has the following data: If the range is 5, which number could v be? | "iVBORw0KGgoAAAANSUhEUgAAAXIAAAAkCAYAAACUhLFXAAAIf0lEQVR4nO3de1BU5xnH8e8uy20FREFQgwRKFMErVGNQhETrDWvUWqqJCUZb06JxponNTKtJk0zVtIl12tgYq8aJOmZEGyzxbmuMN5BEDUYMsQkC4ggqAgIuy7Jw+gdKZ+W6etiz23k+/zC851nOb96XefbsObtndYqiKACWRiumejMNSiMKQgghnJEOcNPpMbp74aE3NI0piqLcsdZRa63TNp0QQgi7GA2eGA2eGOobG6SJCyGECzJZ63DXu6E3SRMXQgiXZbJa0Fs... | [
"179",
"71"
] | null | 0 |
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