subject stringclasses 4
values | grade stringclasses 15
values | skill stringclasses 445
values | pic_choice bool 2
classes | pic_prob bool 2
classes | problem stringlengths 0 1.12k | problem_pic unknown | choices listlengths 2 4 ⌀ | choices_pic listlengths 2 4 ⌀ | answer_idx int64 0 3 |
|---|---|---|---|---|---|---|---|---|---|
math | grade-2 | compare-clocks | false | true | The clocks show when some friends watched a TV show Tuesday night: Who watched a TV show first? | "iVBORw0KGgoAAAANSUhEUgAAAjYAAACZCAYAAAA8Y3AnAAAazklEQVR4nO3deXhTZb4H8G+SJm3S0oVS2gq0tAUpRaGCgmUbRIaHy+IVxXovjDMMjqwuXBZRLyNldLwDVkW9IiiMUEd2Ra+ooICAoAwMWAsCMpS2IENbWromafb7R23S0CbNnpzD9/M8PE+as72N/b7+znvOeSOxWCwWUEia81ETNn1v9Nn+ulb9AxG6Wp/sK1ypxP6XRyNaJffJ/oiEgrkkCm3SYDeA2ldWY/Fp5+lrOq0WG74sC3YziAKKuSQKfSxsQtSlWnOwm9C... | [
"Clare",
"Shane"
] | null | 0 |
math | grade-3 | read-a-calendar | false | true | What date is 2 days after June 27? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAF2CAYAAAAbcOzWAABWlElEQVR4nO3de3xU9Z3/8ddMJvcruXMnEDCAIUKkCAH5FbGgeC/rrixbt2KVVt12sSibVmt/itRLu9XaLe6qRbQWFFYJUATBX8KlgEgg3AImBAgh5H6B3C8zvz9ihsQEmEgmkzl5Px8PH5I5Zyaf+eTMmfd8z/ecMdlsNhttVO2vpepQLU2lzYiIiIjItbOEeRAwzpeARF9XlyJ9gKltwL+4v4am4mYCJwdg8jCB7Up3FREREZGrMoGt2cbFv1dhifQgMNHP1RWJwZn... | [
"June 28",
"June 29"
] | null | 1 |
math | grade-3 | fractions-of-a-group-denominators-2-3-4-6-8 | false | true | What fraction of the shapes are triangles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACUCAYAAACp1l47AAAa8klEQVR4nO3dXXBb533n8Z8gABIoEAQpCXxVqBfbcnbE0Ys3WdndivTIdpqxvabbTpq9iSVP7+uZ9qZ7E7o3vdoZZ3K7s1KuGqWThB7blRtZMUhtZW69oagRU9t6JUWKAGGTAEGQEAEI3AsKtGSL4iF53gB8PzO+oMiD8z8/PzP4z3me85xNi4uLiwIAAABgCo/TBQAAAACVhAYbAAAAMBENNgAAAGAir9MFlPQlYpKkVC4nSQr7/ZKkzkizYzW5ETkZQ04AAMAptjf... | [
"2/6",
"1/4",
"5/8",
"4/8"
] | null | 3 |
math | kindergarten | classify-shapes-by-color | true | false | Which circle is pink? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGjklEQVR4nO3d+09TZxzH8fdpqQJyDQxQ8DrBzM1Nt2wmu/nDsv26v3fZL7tmickubvOOWZzc1SEUSktbzn547GIMOKDt9+nznM8raaIhxm/Lu+fW03OSNE3TpW2YLUGxDrUUkaZ1JdCfh+leGD8CyVIlTa+v+x5LYnZ1ALrul9xfjh+BC8dchSLNKtbh7iYsbsO9EuTWa+4HikxaqT/vmgLYqEOu/sIPRFqp0VQ1hZzfUSQrFJqYUGhiQqGJCYUmJhSamFBoYkK... | 0 |
math | kindergarten | am-or-pm | false | true | Rob is sitting by the window one evening. The clock shows: What time is it? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABZT0lEQVR4nO3de1yUZfo/8A+IAwKTynBwKHVAhUymExWgpiilbStYaZuyx++q7dbuJttxg93a2h902NqF+tYe1N12v7tgm1aCbWmhoMWhpIODGmjDWDk4yHgaBmFA+f1BMzIwh3tOzACf9+vlS2bmfp7nFmdecz33cz3XFdTX19cHIiIiIiLyimB/T4CIiIiIaDRhgE1ERERE5EUMsImIiIiIvIgBNhERERGRFzHAJiIiIiLyohB/T4D875zpPDq7e2Hs6u3/u7v/75B... | [
"6:00 A.M.",
"6:00 P.M."
] | null | 1 |
math | grade-6 | reflection-rotation-and-translation | false | true | How has this figure been transformed? It has been... | "iVBORw0KGgoAAAANSUhEUgAAAPoAAABkCAYAAACvgC0OAAAIFklEQVR4nO3dX2xTZRgG8GelXVm3lOLYHBOcU9QhDNShEROkE5yLxGR6oYkRs11AIiZGvTJgTJcgiYk3xjsXs6kxemOciVEQhRCMmoFLY0aGCsrcEGRDuz+UdXQ7XuyPdOzQ77TntF/7Pr/Ei51+e/lWzkNPT9+9FmzevNkIBoOww5EjR2AYBlgv9XqHDx+2pVa2BYNBrZ9nafXcwWAQoVDIloKtra0wDIP10qiXL3he6VXPZUslItIag04kAINOJACDTiQAg04kAIN... | [
"rotated",
"translated",
"reflected"
] | null | 1 |
science | grade-4 | identify-mammals-birds-fish-reptiles-and-amphibians | true | true | Birds have feathers, two wings, and a beak.
Birds are warm-blooded. Warm-blooded animals can control their body temperature.
A bald eagle is an example of a bird. Select the bird below. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAADbMUlEQVR4nOydd5gV1fnHP+fM3LK9UKWpiCCKoIIRQSCIBY3BBiqW2KLGGiEaWzQx5mePvWPDqLEkRsUSEQtFRAQUsaLSlF6W7bfMzPn9MTuzc++du7vqGk08n+e5z9475ZwzZ+bufc97vu97hFJKWZaF4zhoNBqNRqPRaDSa/06klJimiUin00ob9xqNRqPRaDQazX8/UkqkNu41Go1Go9FoNJr/DRzHQf7QjdBoNBqNRqPRaDTthzbwNRqNRqPRaDSa/yG0ga/RaDQ... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6cAAADMCAYAAACPx9V0AAEAAElEQVR4nOydd7xdVZn+v2utfcrtNTfJTe8JBAIhdAgGREARUcE+iqCO5acDiGOZ0dFxxoa9CxZwxNGxDMqg0gmEUAOEUBNIrzf35vZ2zl7r/f2x9t73nFtCUGZ0nP18PvfDPefssvY6+4b17Od5n1eJiIRhiHOOFClSpEiRIkWKFClS/O+E1pogCHioBxZVQY35c48oRYrx0WvhmX7YU4CGAE6p9+/rlJimSJEiRYoUKVKkSPG/H845wjBMiWmKv3jUGP8ABaD... | 3 |
math | grade-4 | nets-of-three-dimensional-figures | true | true | Which net will make this figure? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAAQ7klEQVR4nO2df1jUVb7HX6AoiDGDPyLM25CJaF4F0ptldwGvrXdJDdZfS5FXNMm9z4YMara6txhqr2XFMkA9T6ZXcP2xN92CNHWvrM3Abj/owWawmy3ZlRkzkE2aQRAGS773j+n7lR/DMAzzC+L1PDw+D37P93uG95z3OZ/POd9z/ARBEBjGZ/D3dgWG6cqwID7GsCA+xrAgPsawID7GsCD95MSJE7z55ptuu/9It915iFBeXo5er6esrIzTp09jsVgAiIqKIiYmxuX... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUkAAADcCAYAAAD9VlPsAAAj7ElEQVR4nO3de1xUdfrA8c+gIipyKY1gLTQ1LFbFvFXrKubmhqWOXdS13MS12to1YU0z9yKUv8w2E9NaLddoveySlaSbbrbKSO4arsRAC0mKQpLEqjEiclOY3x/TGQVh5DJzzpmZ5/169eK1xMx5Zo3H73PO93m+BsCK0A2r1cq3tXC0Es7VwUX50xFCVR0N0L0D9O8KIb5gQJKkrnxbY+VgudZRCCEARgZAR62DEA0dqbR9DfWFiG62v9GEEOo5Vwf556GkFr6... | 0 |
math | grade-3 | which-picture-shows-more | true | false | Which is more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAlYAAAE4CAYAAACZs72oAAEAAElEQVR4nOz9PWwky7bvif3ezMMgUsIIEcAAyvQ6DEFIelkyBNazuo5XB+OQzyKPtet4bK/pNY912ZZIb9M73NYhrSGNGezybrU1VYAAVXqd0AcU21ImMANEYEaaDI3m4cpYkVlF7u599nl333ffbdQCuiuZGRkRGZ8r1vqvtf7VP/zDP/xD9z/D/+N/gv/x38H/8g8c6EAHOtCBDnSgAx3oV9C//lfwn/+n8L/7X8H/9j+Df9X9f//hH/7P/8M/d7UOdKADHeh... | 1 |
math | grade-8 | identify-reflections-rotations-and-translations | false | true | Look at this shape: Which image shows a reflection? | "iVBORw0KGgoAAAANSUhEUgAABbAAAAC3CAYAAADD5XikAAASHUlEQVR4nO3dX4hdV70H8F8y06YxbW+UmGZviSmIoDipNUcqXFP/pLU21DwoVqsP2ov0RY0RBavJg/HlQhGEXlHEB4siljw0sY63UhNCoaEa7I5/4hSkGtNW9rFWS2qjjTQzcx+GOSZNwm2Stc5Ze+bzgaH7TA7f82N3Dcl8Z806SyJiNgAAgCRmZ/3zGgAAUlk66gEAAAAAAOBsFNgAAAAAABRJgQ0AAAAAQJEU2AAAAAAAFEmBDQAAAABAkRTYAAAAAAAUSYENAAA... | [
"A",
"C",
"B"
] | null | 0 |
math | algebra-1 | identify-linear-functions-from-graphs-and-equations | false | true | The graph shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAfwAAAH8CAYAAAA0Uh0TAABlJklEQVR4nO3de3xc9X0n/M/cNbrLkizJMpLxldj4gsEGGztASQOFhMZOs5A2IXRpX5tsEtLss93N9unmafICNvu0STcpZEO72QB9dTcbnhoaG8vGYGM7crCxsGVLBluWrbtmpJFmNLcz5zLn9/whj7AsyZqR5qeZkT7vf2BGcz7z8zlzzvf8zuV3LEIIASIiIprXrJluABEREcnHgk9ERLQAsOATEREtACz4RERECwALPhGN87//9/9GY2Pj2GvDMPDss88iGo1msFV... | [
"linear",
"nonlinear"
] | null | 0 |
math | algebra-2 | factor-quadratics-using-algebra-tiles | true | false | Which area model represents the factorization $2 x^{2}+5 x+3=(2 x+3)(x+1) ?$ | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAR0AAADjCAYAAAC4hcCmAAALh0lEQVR4nO3dfWxVdx3H8c99Kg+3tEALtLRYBmMwHiaUzRqciBtksAcjbv4xM0eixkzZgyYzc6KJmWaLf7j4kJkQHSaahWyDLe5561AGCm6w8rBRYEClttAOLpaW3nalvef4R9cKjKfee+73es95v/6BntLz++Ub7vuee1s4Idd13dbT0sEu6VRK6nMFAJ6JhqRREWnaSGlCgRRq7XHddzpyvS0AQVBTJEUPdPV/UF4gTY/3FwkAvHIqJe1PSi2npQ+6pHBHX/8... | 0 |
math | precalculus | find-limits-at-vertical-asymptotes-using-graphs | false | true | The graph shows f(x). The dashed lines are vertical asymptotes. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AAB78ElEQVR4nO3deXgU150u/rc3qbWvIAmBhFkkLIywxWJkQwBDYsbYTHDi2ImdTGbJjTPOOpO5k+RmMs9kGE9unMS/ZJyMk0mu7YydcULiODZYxtiIxZJlQIBAYhMyCAmhvdXqtaqrq35/NN1IoKVaOqXW8n6eJ0+sVvXbXzXq0rdPnzrHpGmaBiIiIiIiEsIc6wKIiIiIiKYTNthERERERAKxwSYiIiIiEogNNtEMsm/fPsyfPx9bt26NdSlERETTlokXORLNHJs3b8a... | [
"$\\lim _{x \\rightarrow-T^{-}} f(x)=-\\infty$",
"$\\lim _{x \\rightarrow-7^{-}} f(x)=\\infty$"
] | null | 1 |
math | calculus | determine-continuity-on-an-interval-using-graphs | false | true | Is the function f(x) continuous on the open interval ( – 7, – 2)? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB2h0lEQVR4nO39e3QU550n/r+r7zdJLSQhycIS5iYQIAwYbDDYOBDbMYkT8Hhx8k2czEky42wyuczsnM1m88v5Tsbjb3azSU4ySTaT3WzszGQmG5/Y8dhYJthgwGAjkEEgcbUAXQBdWup717Wrfn80kpG5qaEeWkLv1zkcu1tdH31U1V397qefqpIsy7JARERERES2cBS6ASIiIiKiWwkDNhERERGRjRiwiYiIiIhsxIBNRKNs27YN06dPx/r16wEAH/vYx/Diiy9e9rG... | [
"no",
"yes"
] | null | 1 |
science | grade-6 | use-scientific-names-to-classify-organisms | true | true | This organism is a black-tailed jackrabbit. Its scientific name is Lepus californicus. Select the organism in the same species as the black-tailed jackrabbit. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOzdd5glVZ34/3flqptv5zQ9PTknZoY0ZCQKKDIKKC6KumZAV1DX767L6g9UEFTAFWUVFHZxMWFCEAmSB2aYDJN6prunc7qxcvj90U4vAwMMOia2Xs/Tz9P33rqnqs49p+7nnvrUKSGKosj3fcIwJBaLxWKxWCwWi/19EkURWZYRPM+L4uA+FovFYrFYLBb7+yeKImIc3MdisVgsFovFYm8MYRgi/rU3IhaLxWKxWCwWix06cYAfi8VisVgsFou9gcQBfiw... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6IAAADMCAYAAABp7h4wAAEAAElEQVR4nOy9d6BsVX32/1lr7TJ9Tr3l3N7pHUEQEBFFxI4FNUHR2GNHTTF5iflpjMauiSUGo+bVF41Ro0bEglSBC1xpcnsvp5/ps/dea/3+WHvmnHu5wEWJRjOPDvfMnD27rL32nHn283yfr7DW2iRJMMbQQw899NBDDz300EMPPfx+QkqJ53kIIX7Xu9JDD48K2SOhPfTQQw899NBDDz308PsPYwxJkvyud6OHHo4IXo+E9tBDDz300EMPPfTQwx8GjDHcPmN... | 1 |
math | algebra-1 | describe-linear-and-exponential-growth-and-decay | false | true | How does g(x) change over the interval from x=8 to x=10? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABv5UlEQVR4nO3de3zU9Z0v/td3rrlfSCDBYMJNqEECJIKCICCItKgr2Bbrsa392e7arb39drenu9vTx9mux/r49XbqqqfH3a7affS0p27RVjEgSBQaKpchBBIQMEAuQC6TTCZz/d5/f4SJGQiQge8nM5O8nv9oJvm+5833M/Od1/czn/mOZJqmCSIiIiIisoQt2Q0QEREREY0nDNhERERERBZiwCYiIiIishADNhGN2gcffIA777wTqqqO+Pvf//73eOCBB8a4KyIiotT... | [
"g(x) increases by 3",
"g(x) increases by 200%",
"g(x) increases by 2",
"g(x) increases by 100%"
] | null | 2 |
math | algebra-2 | factor-quadratics-using-algebra-tiles | true | false | Which area model represents the factorization $6 x^{2}+13 x+6=(3 x+2)(2 x+3) ?$ | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAXIAAAEdCAYAAAARhuyGAAAXtklEQVR4nO3df2xV9f3H8Vfvj/Lj1lJsKf3Ft1BAfjMoKgtzjimEH44tTPcHi5NkM4sLoFvC4ggz2dwif+13XEI2WbLFEBR087fWLgobzIEXqNKC0I6uhdb2YqH2Ukt7z/n+UekoQqX3fi7XzznPxz94z4Xz/uQV++qn5xwuWa7ruq0XpBPnpQ8TUp8rAMBnWChLuiEoTR0tjc+Wslp7XPffnZleFgAgGQtzpdDx8/0virOlaZH+lgcAfHZ9mJCOxaWWC9J756V... | 3 |
math | grade-5 | compare-fractions-and-mixed-numbers | false | true | Which number is less than the one shown? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADNCAYAAACCVwcEAAAFxklEQVR4nO3dP2pcVxyG4TNiwGuQhbeiwlYhXHoLqVNqFSpdewkuDQKrMt6K/2wh1U3jgFJII8EbnxPN83TDVfGDD8zL9cDstm3bBgAAkNiPMcabTx/H15/fZ99y1M5Pz8bnt+/ufW6j+Wy0Phutz0brO7QRcNjJGMM/Zgv48uPbg89tNJ+N1mej9dlofYc2Ag7b3/1wdXE5646jdn178+i/tdEcNlqfjdZno/U9ZSPgfiezDwAAgOdEYAMAQEhgAwBASGADAEBIYAM... | [
"9+1/2",
"6+1/2",
"8+1/2",
"7+1/2"
] | null | 1 |
math | grade-7 | nets-of-three-dimensional-figures | true | true | Which figure will this net make? | "iVBORw0KGgoAAAANSUhEUgAAAMYAAADNCAYAAADjXA+eAAAPlUlEQVR4nO3dTWxTZ77H8W/SCmHSiw1BRUwjkluSxdVtaDpqy6xiZxUVqcpB3EWpGDWphBLdGclOR1ewQIoj7oJsJrY0dwRCmgRdJLoYxMmGKneDQzcXpppJCF1cJR1MFQZREThGTQ5CSrgL5zhvT4wT23Fefp+N5cQv/yPll+d5znPO85S9evXqFSKySHmpCxDZiN5c7y9MJBKUlZWRSCQyzxc+hkIh42MwGFy/ImXbKyt2V8pxHC5fvkwikcC27bw+q6WlhaamJr7... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUIAAADNCAYAAADNPHklAAAlY0lEQVR4nO3dfVhU95338fcMjwPIDM+CJGCUGOtDTGKi3bQZTLeREC1jYlITyIpuvdDGBkx2azZpVnJ734luNs2wTdt4mVQ0btM2zWbMxrR064JGdxOSbPEhZKMooBAFeZhBYBAZ5v5jnBF0wIF5Aub7uq5eU5iZc76n1M/1O+f8zvensFqtVoQQgygUCn+XIHxI6e8ChBDC34J9vcOKigoUCgUVFRWOnwe+ZmZmOn3VarW+K1IIEVAU3j41NhqN7Ny5k4qKCgw... | 1 |
math | grade-5 | reflection-rotation-and-translation | false | true | How has this figure been transformed? It has been... | "iVBORw0KGgoAAAANSUhEUgAAAPoAAABkCAYAAACvgC0OAAAFdklEQVR4nO3dz2scZRzH8c/E0BRM6rYmNdhGiVtKUWo1Uam62OnBFsEUD1aviaB/gAiehM1dVPDkKXsWkSDRi5K61GoVhaXGHxRNoKKlJujmkLaGJo+HNkKzm+zsZOw8M9/3C0ph99nvM93dD5nuTj8Njhw54sIwVBKq1aqcc2Je/HmnTp1KZFbawjD0+nm2Nq8zDEOVy+VEBo6Pj8s5x7wtzMsL3ld+zetIZBIAr3WmfQDAmg8nX9fs3NcNt19zi5KkN9/+XJK0s7B... | [
"reflected",
"translated",
"rotated"
] | null | 1 |
math | grade-1 | compare-sides-and-corners | true | false | Which shape has fewer corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAALgAAAC4CAYAAABQMybHAAAER0lEQVR4nO3dS27bVhiG4V++DdKk7ahFF9B2CVlRVhgkBrKE7CBNhgZqDzKI5diwLZUdqGzS1DdJpGR+fJ6RKELAP3hxQJEH0qRpmub4qurDedV0XjVrCgZrb1L1bLfq1ydVPx9UTY4vm+bt6bbHgu49/75q7/354uCXg6rfv1vUD0M1nVe9+1z151XVH+dVO6ezxQlxk+DZ7qLlqqqzedXO/KsTkKBt+bqp2tnuKNAvgRNN4EQTONEETjSBE03gRBM40QRONIE... | 1 |
science | grade-4 | identify-magnets-that-attract-or-repel | false | true | Two magnets are placed as shown. Will these magnets attract or repel each other? | "iVBORw0KGgoAAAANSUhEUgAAAcIAAAA0CAYAAAAZpDj1AAAGlUlEQVR4nO3dfYwU9R3H8c/M7OPtLnscd9ydR0JslAcRKr1IqlCh7R+2GkITH2ITYzQhItBY6hFbG9LEpLQGMLE+NFZoU1ODqUnjA5rUqNHoH5ieiREDgvYg5Lg72Xvgbrm7fWB3pn/sQSUqLHuzO3vM+/UP/wwzn8Dm+9nd+e1vDMdxHAHANzi+7aSyx/Jex/CVVSse0LA15nUM34hYIQW8DgGgfvE+ufYcOeJfvXZsx5HpdQgAALxEEQIAfI0iBAD4GkUIAPC1wAt... | [
"repel",
"attract"
] | null | 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/t0lAAAf6klEQVR4nO3de3CW5Z038F84CQRjQEOKpByqloR3eQ0NJ2WKW2t3pZaq9G3trIe2rhTdd6urdrfu1umyLVi6s1t3peKhfVutbNeZUlvrjuJ4qroOhPpUdqgk7usKQUAItAmHRIxI3j/6mspCOOS58tw5fD4zzvjcV8LvG/gj39y5nusuam9vbw8AACCJAVkHAACAvkTBBgCAhBRsAABISMEGAICEFGwAAEhIwQYAgIQUbAAASKhgBXv//v2xf//+Qo0DAIBMFKxgr1u... | [
"negative trend",
"positive trend",
"no trend"
] | null | 2 |
math | grade-3 | match-clocks-and-times | false | true | What time does the clock show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABhCAYAAADsidaRAAAIGElEQVR4nO3dO29bRxoG4E8LryqDLIIAuwuxSJUL2W6yZhXkrjaSyDpZK62l2LUdMW2sC5BORrZwE9qSy8h7qZU/cOg/QFcJEuAwRRwbWm5hWKsoVkweDk2bep6KBOZ8MxSbV4OPMzP9fr8fAABAEn+Y9AIAAGCaCNgAAJCQgA0AAAkJ2AAAkJCADQAACQnYAACQ0JlBB16/nse9e070I625uTMxP3920ssAAEjGDjYAACQkYAMAQEICNgAAJCRgAwBAQgI2AAAkJGA... | [
"four twenty",
"five fifty",
"four o'clock"
] | null | 0 |
math | kindergarten | match-analog-and-digital-clocks | true | true | Look at the analog clock: Which digital clock shows the same time? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEJCAYAAACuWVASAABS00lEQVR4nO3de1zUddo//tdwGhBhBuUo6gx4AkwZD3kqOWRqZSlmbdthA+/N2t1vB2y39r7vbQPvtt1fd7srVrt3u9UtlW3dlYmaHTRzxFOY4aDJwRQGT4igDKAww/H3BzJxmMN7TswAr+fjwaNh5v35zBUyD655z/W5LklnZ2cniIiIiIjIKbzcHQARERER0VDCBJuIiIiIyImYYBMRERERORETbCIiIiIiJ2KCTURERETkRD7uDoDcr7WlHa2GNrQY2tBiaEeLoQ2... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA5oAAAEJCAYAAAD1mFhPAABkDElEQVR4nO3deXiTZbo/8G+6pXtT6MqWtGVpC9KwyE5bRBZFpIiOIzpSzgzqODoWZ2TO+Y1K1dnUGSlux1HnUBBHRwUKiLKIlKUoiJCCtBRpm7K1pYWme9L190dpTJck75ulSdrv57p6mSbP+743IcHcuZ/nfiTt7e3tICIiIiIim5BIJI4Ogcjh3BwdABEREREREfUvTDSJiIiIiIjIpphoEhERERERkU0x0SQiIiIiIiKbYqJJRERERERENuXh6ADI8ZqbWtG... | 0 |
science | grade-3 | identify-mammals-birds-fish-reptiles-and-amphibians | true | true | Amphibians have moist skin and begin their lives in water. A western toad is an example of an amphibian. Select the amphibian below. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOy9d7hdRbn4/5lZdfd9anJOKukJJIQQJCQkEIoUIYKAVFGxXZXrFS9XwE65WBCsoKAoCCpcbIBepCqQIIQECCRACElIPzn97L7azO+PnZxLSAIBg/rltz7Pc57n7L3XmjUza9asd955i9Ba6zAMUUoRExMTExMTExMTE/P/JlJKTNNEBEGgY+E+JiYmJiYmJiYm5v99pJTIWLiPiYmJiYmJiYmJeWeglEL+sysRExMTExMTExMTE7P3iAX8mJiYmJiYmJi... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6cAAADMCAYAAACPx9V0AAEAAElEQVR4nOy9edRsV1nn/9njGWp6xzsluQmZCUHCEAmjhsEGGyK2BpkEhdZuaZaCjSJtazfiorVRbFFwgaAgoNAqCtjaIqJAQKYQZsg83vm+U71VdYY9/f44994mZLrRMMivPmvddd+qOnXOPufss2s/+3me7yNSSsl7T4yROXPmzJkzZ86cOXPm/OtESonWmk+P4bweDNS3ukVz5tw52wGunsKBFhY1PHqhe1/ODdM5c+bMmTNnzpw5c/71E2PEez83TOd82zN... | 1 |
math | grade-5 | parallel-sides-in-quadrilaterals | false | true | How many pairs of opposite sides are parallel? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAAQJklEQVR4nO3df2yUdYLH8c/3mXnmGQqC1gNBEQEFbC0LikBbuVt13b3oXi7qP54m50WT09N4u3cm58/sbtw7N+tujo3GxFVv3ehldc0muNnzR/RWzr2jrRVREGyhIIKuVEusgljmmXme53t/tMy0qwLKtN92nvfrL/ik0/lAmMwnX57OY6y1VgAAAACqwnNdAAAAAKglDGwAAACgihjYAAAAQBUxsAEAAIAqYmADAAAAVcTABgAAAKqIgQ0AAABUUdZ1gbSKd92t6IP... | [
"2 pairs",
"1 pair",
"no pairs"
] | null | 0 |
math | kindergarten | classify-shapes-by-color | true | false | Which star is pink? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAG+0lEQVR4nO3dz28UZRzH8c/z7LbbbrttaZeWQqHFpCAJJhxIMIaDB0jUGPWi4aCRCEYwmHggelFMjIkcNOHggQOJJBgB/Qf8LWdOGIlIixwghCWBGHdL6XZ3Ox6eLYW2uzuzP77Pzjyf16Xd7rbzJXmzT3d2Zqo8z/My88C1WSBXAooeiBoWV0AqBkwmgZFOQGXynncxa3ssirJdfUB8etbcGO0EtvaYCokalSsBV+8Dt+eBqVlAZ4vmDkZGzZSKmaYAYKYE6NI... | 2 |
math | kindergarten | count-money-pennies-and-nickels | false | true | How much money is there? | "iVBORw0KGgoAAAANSUhEUgAAAMcAAABECAYAAAA1ISGwAABPLElEQVR4nO29d5hdZ3Xv/9lnn97PzJkzvWm6ZjSjMqojyZbcOzYuEGKIKYYkXJNfnAduYi5JbhLuk1wCXDAXEgwkDi4YsHCTrWJZVu99RlM0vdczp5fdfn+M944ElpFsY/L7Pf4+j56ZOTptv/td77vWd33XegVN0zQ+xIf4EL8B0+/7C3yID/FfFR8ax4f4EJfBh8bxIT7EZfChcXyID3EZmD+ID5HSKRKJBJlMmlQigZzNkJybJKtomM1mbN4ATqcLt8eL1e7A5XE... | [
"11¢",
"7¢",
"10¢"
] | null | 0 |
math | grade-4 | what-decimal-number-is-illustrated | false | true | What decimal number is illustrated? | "iVBORw0KGgoAAAANSUhEUgAAAKQAAACkCAYAAAAZtYVBAAACc0lEQVR4nO3bMU5VYRRG0YtxAEyMynEYOwdBZxgHlRNzBs/WwgsB4j37xLVKyCGv2Pnzio+72+12OyDi0/QHgD8JkhRBkiJIUgRJyueXfnn/9HjV5+A/8+vr97/+/PSFFCMTXnwhj+M4vn15eNcf/vH80+0bbs9ejNfcPz2uun3tofMdkhRBkiJIUgRJiiBJESQpgiRFkKQIkhRBkiJIUgRJiiBJuTv7r0PzM/6ls6WQ+VnkdtOE7CO35mesIkhSBEmKIEkRJCmCJEW... | [
"0.33",
"0.51",
"0.53",
"0.43"
] | null | 2 |
math | kindergarten | represent-numbers-with-shapes-up-to-5 | true | false | Which group has 3 rectangles? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAEcCAYAAAAV9AvgAAAEoUlEQVR4nO3cvW4UZxiG4Xd/7GIDlI5yAEkOgQZRInHK1FScASF9DKVtVsLxMilWSKkoos29krmuakYjfXqqW181q2VZluv7mT/3M7eHmYdlAE5iu5p5upn5dTfz8+XM6vrLsry7Ofcs4LF7/mxm+2F/fPnlcub3n441AjiF28PM+88zf93P/LGfWd88HD+IDXBqTzfHtszM3B1m1od/fQA4tW9t+XuZWZ93CvAjERwgIzhARnCAjOAAGcEBMoIDZAQHyAgOkBE... | 1 |
math | grade-2 | match-addition-sentences-and-models-sums-to-10 | true | false | Which shows 2+6=8? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAgwAAABKCAYAAADXGAxXAAAOt0lEQVR4nO3dW2wc133H8d85c9kbd7kUZYeSYtmwLDmy69ZuUcuXBH0xkqZJCgRBnCAwjDwVKNKiMIr2LS95aIHkIU1aoM/tQ5umCIrGqdvntKkdoQUCJI4jSlUQXSjqQonkXud2Th+GK3HJ5e7M7p7Z4er3AQxR4nJmv4SH8+fO7IzQWut1H7jUBhoREGoQERHRQ84WQNUCTpeBD7mAWPe0Pr8966dFREREeXWuBtgX2/FfjrnA05V4miAiIqKHWyMCLrSAGz6... | 1 |
math | grade-2 | write-subtraction-sentences-to-describe-pictures-up-to-18 | false | true | Which subtraction sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAfQAAABkCAYAAABwx8J9AAAXrklEQVR4nO3deXCU933H8fdeunZBgJA4bMuAEQQD5jSNknTqYOeAjrGDGTMujbOetHVmkkk7SWbSpmmOpmnSNk4znRzjtJPReIwZewwk2GbiJB67HuNtZJBkhAySsLABGyRzSGhX2pV29+kfyx7P3ruSkLT6vGYy1T7P8/s9v49n+vvy3BbDMAxERERkWrNO9gBERERk7FTQRURESoAKuoiISAlQQReZwbpOn5nsIaQoZkzKMXGUY2rJNib7DRyHiEwhTXv342luoXH... | [
"12 − 7 = 5",
"11 − 8 = 3",
"13 − 7 = 6",
"11 − 6 = 5"
] | null | 0 |
technology | grade | font | false | true | Identify this font type | "iVBORw0KGgoAAAANSUhEUgAAAPoAAABQCAYAAAAwa2i1AAADsklEQVR4nO3cMW6rMBzHcfP0jhBlygEyVZVyBWfolItkq6rmCEYZ24tk6gBXqFT1DJmq3oEur8iv4ABNcIDf9yOxUIgdnF/540CSoigKA2DS/ly7AwD6R9ABAQQdEEDQAQEEHRBA0AEBBB0QQNABAQQdEEDQAQEEHRBA0AEBBB0QQNABAQQdEEDQAQEEHRBA0AEBBB0QQNABAQQdEPD32h2Ykvf3d/Px8VFZP5/Pzc3NzRV6hL6NZswLXIy1tjDGVBbn3LW7hp6MZcw... | [
"Terminal",
"Zurich BlkEx BT",
"Fixedsys",
"Georgia"
] | null | 2 |
math | kindergarten | fewer-and-more-compare-by-counting | true | false | Which group has more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAFrklEQVR4nO3cz2qcZRjG4WfStIuqFUEU3bhSwRMQunJdcO8ZeCSlh9KudRN6CJIegI57K+NCpu1A2wmfizElvBiTTGZyf3+ua5MM2bw88GPuVWZd13XP31T9vqp6cVK17grYk8NZ1Qe3qr68W/XpnarZ89dd98sy/SyYnm/vVR3OV5sPn92p+vq9TZ3Afrw4qfr1VdUfb6p+W1UdLNebP4gP9u+DW5vWqqpenlQdnJz5A7B/p6297aoOsk+BaRMgBAkQggQIQQK... | 1 |
math | grade-8 | similar-and-congruent-figures | false | true | Can you prove these shapes are congruent? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEVCAYAAADaTZLyAABKZ0lEQVR4nO3deVxU9f7H8Rc7DO6KOyGKoOC+oNhKm+ZSai5lVuptNeu2mHbrpr+0TdvuLVusW7aXe7mVtqiVoiiCIiC4gLmUoiboIMgyvz8OjJEaggOHGd7Px4MHOhzmfObxmOw93/M5n6+bzWazISIiIiIiDuFudgEiIiIiIq5EAVtERERExIEUsEVEREREHEgBW6QSLFmyhOjoaOrXr0+dOnW46qqrWL9+vdlliYiISBVQwBZxsGeeeYZHHnmEhx9+mIyMDPbt28f... | [
"yes",
"no"
] | null | 0 |
math | grade-6 | mean-median-mode-and-range-find-the-missing-number | false | true | Abigail has the following data: If the mean is 2, which number could k be? | "iVBORw0KGgoAAAANSUhEUgAAANcAAAAkCAYAAAAae68CAAAFvUlEQVR4nO3daWwUZRzH8e/ObC8KPbYXrXIUil2OIhQotAW5NVohWjVEDSqgooiiBY83GjFiTCQgYEAiIhIMUZFDKxERkbMVESsIXW2BCghtt5BS6EF3Z8YXHLEaTUyf2YXy/7zrs+nzeybpb3ef2Zmuw7IsC8BnmtT7DUzLwkII8X84AM3hINKpE6JpF8csy7Ia/AaNhhHc1QnRRkToOu2cOk6faUqxhFCo0TBwag40KZYQ6jUZBprflB2WEKr5TQtNqiWEehagBXs... | [
"23",
"2"
] | null | 1 |
science | grade-3 | use-data-to-describe-world-climates | false | true | Which statement best describes the climate of Riyadh? Hint: Summers in the Northern Hemisphere occur in June, July, and August. Winters in the Northern Hemisphere occur in December, January, and February. Riyadh, Saudi Arabia, is a city in Asia. It is located in the Northern Hemisphere. It has a subtropical desert clim... | "iVBORw0KGgoAAAANSUhEUgAAAtgAAALOCAYAAACTXGSDAAD/4klEQVR4nOzdeVxVdf7H8ddl3/dNZFdEcWFRAcHdNAv3JXOq0bappn41Tc3UWDM1NTk1TTXTMkvTYntpqSkuueNSIiqIKCigCKKC7DuXe+/39wdyFcXEBC7a5/l4WNxzz73nfe8999zP/d7v93s0SimFEEIIIYQQolOYmTqAEEIIIYQQNxIpsK8gOTkZjUaDRqMhOjra1HHEz9CSJUvQaDRERkZe8315eHgY9+fWf2ZmZnh5efHLX/6SwsJC47r5+fnGdSorK69521f... | [
"Summers have lower temperatures than winters.",
"Winters have much more precipitation than summers."
] | null | 1 |
engineer | grade-6 | evaluate-tests-of-engineering-design-solutions | false | true | Which of the following could Brennan's test show? Brennan was a mechanical engineer who was designing a weather station to record temperature, precipitation, and wind speed. The weather station would be used in a town where the highest recorded temperature was 40°C. Brennan wanted to make sure the weather station would... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAFOCAYAAADtpiRUAAEAAElEQVR4nOz9aZBl6Xnfif3e5Wx3v7lXZe1LV/XeDTQaYAMkSEBcJJHiMEYSOQpJtuyYsMKKsT3zxRH22JLDE4qxxzETDtszGlGS9cEeSyJFjUiCAIiFAEisDfS+VHV17ZVVud/93rO97+sP52RWVnV3VQPZhapG5z+i4uatzLOf85xn+T//R/yDf/APHHvYwx728CHCf/1f/9f3Zbsa4M+Xf2lXK7Hizr937s42WYi7rGCXuNv67/bGuOvyuzy+e338d4MQapfL7/b... | [
"if the weather station would work when the temperature was 50°C",
"how well the weather station would work when it was windy"
] | null | 0 |
science | grade-4 | compare-properties-of-objects | false | true | Which property do these three objects have in common? Select the best answer. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADQCAYAAAByQhWRAACI2UlEQVR4nOz9aZBkS5qehz3ufpZYM3KrylpvLXffeu/pRs++AhhggMFCUGYgIBPNKEqU/uiHRBPN9FM0k8EkiGY0khDNSIoSSAGkRILAzACzYbqnp6f3vt1997VurVm5Z2Ss5xx31w8/J+JEVFbdqrpVmRlZ/pRFxXbCj0fkiROvf/5+nwtrrQUYDAbcunWLdrtNlmV4PIdNEATMzc1x+vRpKpXKY92XP/49Rw1//HueZA7y+Pd4jiPCWmv7/T4ffPABFy5coFKpEIb... | [
"flexible",
"fuzzy",
"fragile"
] | null | 2 |
math | kindergarten | represent-numbers-with-shapes-up-to-5 | true | false | Which group has 5 rectangles? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAEcCAYAAAAV9AvgAAAEyklEQVR4nO3YsW5UZxCA0Vl7F1kEKBPlAZI8gl/NjXu/mulcEtLHaTFYBmPdFAtS6FfftTbnVLu60q+pPo1msyzLcvtl5q/7mbunma/LABzEdjPz+nTmt5czv7yY2dx+Xpa3H9YeCzh2529mtu/v939+fTHzx0/7GgEcwt3TzLtPM39/mfnzfubkw9f9B7EBDu316b4tMzMfn2ZOnv7zAeDQvrflcZk5WXcU4P9EcICM4AAZwQEyggNkBAfICA6QERwgIzhARnC... | 1 |
science | grade-8 | predict-heat-flow-and-temperature-changes | true | false | Two solid blocks are heated to the temperatures shown. The blocks are placed so they touch. Which diagram shows the direction heat will flow? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAYTElEQVR4nO3de3Qc9X338ffM3nRdSZZ18w3b+H7Flh1fsAHjkBCICWlKAkkDz9M0aZ8nbc5DD0mf9JyUk+Y0DW2SPk3ynDaQNqUhpFwSjDFgG4wdbIMvkrF8k2zJd90vu9rVaq+zM/1j5bVl+SJL65mR9H2dwwH9NDvzXUb72Znvzm9HMQzDaI1DQxh6kqAZCCFERjgVyHfAzBwoc4PSGjOM/UGryxJCjHYrvOCsD6d+qHDD7NxUGgkhRCb0JOFEL7TE4WQY1KC... | 1 |
math | grade-7 | identify-reflections-rotations-and-translations | false | true | Look at this shape: Which image shows a reflection? | "iVBORw0KGgoAAAANSUhEUgAABbAAAAC3CAYAAADD5XikAAASnklEQVR4nO3dX4xUZ/kH8AfYFmEEqkFgjq0mNCEaocWOqRe2VttaS9QLo9XqhdaYJkaNGL3wDxe0l8YrfonGeFGiMTZcAFZMm9qmqbZRiT1IMdtEYitWc4aKNk23SzFld72AmQKF/Aq8Z857Zj+fhJyZZfKdJ+++S+l3D+8uiIi5AAAAkpib89drAABIZWHTAwAAAAAAwNkosAEAAAAAyJICGwAAAACALCmwAQAAAADIkgIbAAAAAIAsKbABAAAAAMiSAhsAAAAAgCw... | [
"B",
"A",
"C"
] | null | 1 |
math | grade-5 | types-of-angles | false | true | Is this angle greater than, equal to, or less than a right angle? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAA4CAYAAADHCI+uAAAKsUlEQVR4nO3da3CU1QHG8f/eks2FbBYSAgGWQAgQyEUgAYUERCmIiA51rFJq62hhDI6XaaXiWK12nGLrdGzH0aiog9NBx9qi46UCKgwuAYncCSAkkQQIEGJINpDrZvftB5CRIU0BN3sJz+9Tdt999zybT8+cOe85JsMwDEREREREJCDMoQ4gIiIiItKbqGCLiIiIiASQCraIiIiISABdVLArV1ZT664LRRYRERERkYhn7erNtXPd2Bw2Rt6dxsiF6cQPjQ12LhERERG... | [
"equal to a right angle",
"greater than a right angle",
"less than a right angle"
] | null | 1 |
math | algebra-2 | graphs-of-angles | true | false | Which of the following shows a 135° angle in standard position? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAANwAAADcCAYAAAAbWs+BAAAJv0lEQVR4nO3df2jU9x3H8dc3FxNNTWJbe1IkTa30dLN87YrV/bELW5Eb/aOmbLFjA+e6OAvTyfxDkILV/ROhzD/2xwYK+s8ojJFKbLtSGihtTvwjshJP/6inqbvQ1iR1yy8bk8z0uz9uFxK9XExy3/c3d/d8/JNc7sjnjeTJ++7rkTie53m9E9L1UWlkUrrrCUCelDtSdUh6ukpaUyE5veOe1zkc9FhA8dtWI5VfG03feLxC2vBQukYA+TEyKV39Rro5ISVHpbL... | 3 |
math | grade-2 | interpret-tally-charts | false | true | Eddie sold treats at a bake sale. Eddie made a tally chart of the treats he sold. Which treat did Eddie sell the fewest of? | "iVBORw0KGgoAAAANSUhEUgAAAWUAAADWCAYAAAAJrJPUAABUA0lEQVR4nO2dd3hUVfrHP/dOn5RJD2kkIZTQm1J0aYqArpXiLvJTUHfXVXcVUXHVVUF31bWiu+paUHTXsuAqooJgC6iABZcOIiUhkEBCyqRMn7m/P4ZMMmRmMimQdj7Pk4dw72n3zuR73/ue95xX4pdfKwgEAoGgQyC39wAEAoFAUI8QZYFAIOhACFEWCASCDoQQZYFAIOhACFEWCASCDoQQZYFAIOhACFEWCASCDoQQZcEZJyZGw6F3xvK/10cTE6Np7+EIBB0KIcq... | [
"donuts ",
"cookies ",
"cupcakes "
] | null | 2 |
math | pre-k | fewer-and-more-compare-by-counting | true | false | Which group has fewer? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAHl0lEQVR4nO3dTWwcZx3H8d/Mem3Z2diVXScUx6WYmJiEcKhI49IkAlNQOXBChQp6Q2lBHFzErRLcoAdUCQ6g0vZUcqkCEi9CRdAEibZqSIJaKlzi2jjNK079ArHX69rr3eGwClQgKynEz28e7/dzWa/8sn+N5+tnPGONkyzLsulVabIiLdaktUwANkhLIm0tSIMd0vZWKZleybKTC+6xgOazv1Nqmag0ntzWKu3a0qgTwMZYrEnjS9LfVqU3KlK6sNZ4B/EBG29... | 0 |
science | grade-8 | identify-rocks-and-minerals | false | true | Obsidian has the following properties:
not made by organisms
no fixed crystal structure
solid
glassy texture
naturally occurring
not a pure substance Is obsidian a mineral or a rock? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAADjBklEQVR4nOz9Z7BkeZreh/2Ot+nttVW3qu4t113te3pmenZ2ZnZnZ4Fd7IIAlgQUASCkCJIhRSjEDxKlICSGFAGRCJJgQAgwQpREcEEYgkusxe4AO77dtDfl/fUmvTve6kNWVVfPzvQs2TPTjEU9EbduVt48J/Nk/p98zf9531fI8zznER7hEX4oxE/7BTzCI/wvGY8I8giP8DF4RJBHeISPwSOCPMIjfAweEeQRHuFj8Iggj/AIH4NHBHmER/gYPCLIIzzCx+ARQR7... | [
"rock",
"mineral"
] | null | 0 |
math | pre-k | count-on-ten-frames-up-to-5 | false | true | How many hearts are on the frame? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACQCAYAAAAyRxwtAAAHpUlEQVR4nO3dP4xU1xXA4TMzjwU8CygkZk0CQREmLciUQZGoILWD3CapHdu1lTak9qYNOGmdpMcNVVwS0WPJDQprO2wUvMhZ5s17KWAxaP8xs2dmdvd+X7do5s493U+XO/M6t5cGbQAQlxeqWW8BgH2gO+sNAADAfiKwAQAgkcAGAIBE6y4cXjzem8U+ZubO8vClv81v/pKYf7j9iwBgRE6wAQAgkcAGAIBEAhsAABIJbAAASCSwAQAgkcAGAIBEAhsAABIJbAAASCS... | [
"4",
"3",
"1",
"2"
] | null | 3 |
math | grade-4 | scalene-isosceles-and-equilateral-triangles | false | true | Is this triangle equilateral? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACTCAYAAAC0026DAAAgWElEQVR4nO3de0CUdd7+8fcMIoiiyToekqBSO3hITNNIE43BREVkhtGMsjz0FNJmupinPJVWpmtra1JbWq6H3aCVKAtTXKWWWIXMDqY8wU9prVQUZUkEEeb3Ry1PbaKiM9wcrtefc8/MfUH/XH67+XxMTqfTiYiIiIiIuITZ6AAiIiIiIg1JVcEOCwvDz8+PBx98kPfee8/ITCIiIiIi9ZbpP4+I9O3bl6ysrKoLzZs3Z+TIkURFRTF8+HB8fHwMCykiIiIiUl9UFey... | [
"yes",
"no"
] | null | 1 |
math | grade-5 | multiplying-fractions-by-whole-numbers-choose-the-model | true | false | Which model represents the product 3×
3
8
? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAN4AAACOCAYAAABe6bZAAAAUS0lEQVR4nO2dT2wcVZ7Hv4YQ2eOw1QloHUer7Wp7MxARUt0iEhkEuFvIcFjN2j5xCbJbQpooc6CRMmg4dTUnNMDKvvBH4lD5c+JCmdEICSO5jBFkBm/ynIjZMEPH5T0YWzObVMChPdkk3kPxnt3t7rhtv6pX5fw+kpU/bZer37c/Ve9/tSwvLy/P3wC+/RH44RZwcxkEQUhmRwtw/73A/p8BHTuBlvl/LC//6XvVp0UQdw+P/xOw468/+v/o3Ak81O5bSRCEXH6... | 0 |
math | grade-1 | estimate-to-the-nearest-ten | false | true | How many marbles are there? Estimate. | "iVBORw0KGgoAAAANSUhEUgAAAiYAAAFvCAYAAAB+cQB/AAEAAElEQVR4nOz9eZReZ3Xnj36e55z3rSrNgy3JlmSCptjYltzgxPIUQE7CYOWuXIYsbAjdcJMGQ6/OLw25CSTkrs5gQ5K+Md0dwP6t24ABQ8B09+p4CE7sAJ7kIYkt2ZYHGWOpNCGr5Brfet9zzrPvH89wnvNWSa5SjZJqL/Cp81ap6gzP8N3fvfd3KxER5mzO5mzO5mzO5mzOZoHpmb6AOZuzOZuzOZuzOZszb3PAZM7mbM7mbM7mbM5mjc0BkzmbszmbszmbszmbNTY... | [
"about 70",
"about 30"
] | null | 0 |
math | grade-2 | equivalent-amounts-of-money-up-to-1-dollar | true | true | Look at these coins:Which group shows the same amount? | "iVBORw0KGgoAAAANSUhEUgAAASMAAABNCAYAAADtqQKzAABlv0lEQVR4nO29d5hb53Xu+9sbvWMGGEzvjRySw96GRazqzZIlWZIt2Ykt9xInN/aJW+IkLjc3cU7OSSw5jopjybZ6pRqL2HuZ3nsFMBj0Xvb9Y2NAyhJlyZZt0eH7PHrIETHA/l7svb71rfWutQRJkiQu4zIu4zL+yBD/2BdwGZdxGZcBl43RZVzGZXxAcNkYXcZlXMYHApeN0WVcxmV8IHDZGF3GZVzGBwLKP/YFSJLEfEIvHo/jnJlmbm4OCUjE41itFoqLSzAYTSg... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAiUAAAC+CAYAAADqU39CAAEAAElEQVR4nOy9d3hb93m3f5+DPQiACyQI7iWR2ntb1paHvLcdO3bSJE0cZzZ+06Z52ySN0/7SjLZpnfEmceI4cTwl2VqWbEm29iZFintvgsTeOOf8/gAIS86ovB0H93XxoigSOAcPDs73+T7j8wiAQoYMGTK8zyiKwkgMOkLglyCRuTNlyPChRy1AlgpqjFCgBYGMU5IhQ4YPACNRheO+9/ssMmTI8H6xxALq9/skMmTIkAGgPZT87tDCNFNy95QhQ4YPN34JWoM... | 0 |
science | grade-3 | read-a-thermometer | false | true | Select the temperature shown by this thermometer. | "iVBORw0KGgoAAAANSUhEUgAAAHYAAAHYCAYAAACYxhw7AABNjklEQVR4nO19eXwcxZn20zMjybKkGcnGh27ZXL6dBXLY2JCQgLmM2V3A4AN2wQRsYD92ITEBAoFgMCywBDAEQ7IsmBuSYBNjQgIBDDYkhmBJtnHAtiRbRgJZmhndmpn+/pjpnj6qqqu7q2dGhPr9TKGpeut936p66nm7qg9JlmUZwzzF43FEo92IRqOIxYYQj8eRSMipPIF4PA7Fzby8POTl5SE/P0/z//kYMWIECgoKsuyJuBTItgFOUiQSRSQSQU9PD6LRKPr7+2E... | [
"70°F",
"105°F",
"95°F"
] | null | 2 |
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? | "iVBORw0KGgoAAAANSUhEUgAAALEAAAB2CAYAAACHxHLJAAArf0lEQVR4nO2de3Acx33nPz37wC5exIskSIJPkRD1pPyQLEWW7EiypCSs+G059uUUP6rOct0fFyVVrkv8SJy6PxzHsa9yuar4IsdKnXx2VGc7PsmVWJRkO7qQJycyISmiRFIkRYIkiDd2gcXu7Ez3/dE9Mz2DBYkFQRIQ9ldFNnpmdnemf9/fr3/9/fV0C6WUoiENWcHiXOkbaEhDLlbSV+JHTxZcDg7Pcma6ymDR5fS0x0TZo7clw6bWDJvasmxuy/DW9Xm681fkFhu... | [
"impossible",
"probable",
"certain",
"unlikely"
] | null | 0 |
math | grade-1 | name-the-two-dimensional-shape | false | true | What shape is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADtCAYAAACF+wIyAAARrElEQVR4nO3dT0/k5pbA4XNHs5rVaNazmK8xX55uEEgkEkQCtQRSIugVLOKCwuUyLpf9ziKdOzdJd4DGVf73PLukE/p0A+JXrtfH/0gppQAAADrxb30PAAAAUyKwAQCgQwIbAAA6JLABAKBDAhsAADoksAEAoEMCGwAAOiSwAQCgQwIbAAA6JLD5qvJmE+XNpu8xAABG59/7HoABShHZ4SoiIv77f/4r4h89zwMAMCKuYPMXy/My6qyJOmtieV72PQ4AwKgIbP6gLVM... | [
"circle",
"triangle",
"square"
] | null | 1 |
math | kindergarten | square-corners | true | false | Which shape has 2 square corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAEwUlEQVR4nO3dzW5bVRSG4XWcH6TSwgAJxAUUJG6gt8L1Mag67gh1yLB3UMI0IkiJSpI2UlyfbAZmS1SKUmrv/e211nmfkS3b0hp8fof2VEopZ2uzP27MrmezTTFgb4eT2ZMDs6ePzL47NpvObkt5fTX6LGT27Cuzw5Ob7ZPvj81+/HK7QmBf17PZm/dmf67Nfr8xW11tti8wMrT05GC7KTOzd7PZav7PC0BLdVMfitlq7ClYCoYGCYYGCYYGCYYGCYYGCYYGCYY... | 0 |
math | grade-8 | compare-linear-functions-graphs-and-equations | false | true | Function A and Function B are linear functions. Which statement is true? | "iVBORw0KGgoAAAANSUhEUgAAAjcAAAGlCAYAAAAGbtd7AABRSUlEQVR4nO3dfXxT9dk/8E+SJk2atLQUWh5aoMUV0RaKAi1CRVAEROcT4HxA5Ddl2w+nOPGezg1v3W7dvGXqblFudOpQpw6ZPG2KPwsICqVDpVa0RUgLLaUplIY2zXNyfn+wxBbaJuk5zTlJP+/XyxeSc3rlSrjy7ZXrnJyoBEEQQERERBQn1HInQERERCQlNjdEREQUV9jcEBERUVwJq7kZNGgQVCpVt/8dOHCgj9MM3+uvvw6VSoXCwsKo3/cnn3wSfE4uueSSqN8... | [
"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 | more | true | false | Which group has more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMwAAACGCAYAAACR4WX4AAAImklEQVR4nO3dT2wU5xkG8OebmZ0Fg9fG65gmKXWpU2hVCq1LTIuUKG2TukRCSWh666WVes4lTQ9VDgTSUy+VeughpyiqVPVPIJHSkLSpCFWagkRqWkXCKXIiEHFibzC7jvHu7MzXw7Bgx/zxF8/3fjP4+UkIzJ95Xz/w7AyztldprfVkC/jfHNCIgbYGEV0WKKDbB77YBWwMATXZ1Pp43fVaRPm3qwIE78ylb9weAlvXpW0iolQjBk5/DLzfAsbnAK/eTn+BZSF... | 1 |
math | pre-k | classify-shapes-by-color | true | false | Which star is purple? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGvklEQVR4nO3dTUhUexjH8d+otdDpiiFXRggEubdF0AQuctHGTRu5EC1cFNELrSpskQRi74kQtUhqF7UI7P2Ne920aZOUmr1NGXTnbjqb5nIvBVlC3eTcxcPJtHk5Z16e/5zz/302ao6eZ/FtHj0zZ4y5rutmvgB/zQIzc8BXF0Qlq4sBy2qBX+qBlqVALPPZdSc/mB6LomztT0BdelY+SCwFVjZIhUSlmpkDXn8C3n4B/pwFaj58lU8wMiqnZbXSFAB8nANq5r7... | 2 |
math | kindergarten | times-of-everyday-events | true | false |
Ed is waking up in the morning. What time is it?
Choose the more likely time. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAHQAAABzCAYAAABJnyafAAAOF0lEQVR4nO2deXAT1x3Hv5KtW0iWsSwZbHwCxkDMEXOYhKsJCSHHDJBOB0o6AaaBhmQKcRKmJeEI0yYZYJomKSQpbUkIoSHQIaHhSMIxkIRAubExBp/4kC1hydZpHd7+YbTyxrp2tbJseT8zHr/3dn+/96Sv3tu3b9++xyMIgtA5gds2wOwB3AQ4+hGJPGBQAjBcCmiEAE/XQRDn2mNdLA42mKwAEm/ZuiJpQmCkrEttjv6D2QPctAJNTqDCBvDb3V0HODH7J4M... | 1 |
math | grade-7 | transversals-of-parallel-lines-name-angle-pairs | false | true | \line{LN} and \line{OQ} are parallel lines. Which angles are vertical angles? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADSCAYAAABw17dKAAAgZElEQVR4nO3df2zU9eHH8ddRKN5U2uqaIaWFShWsCAdX2qrdaKdud9mWApmTwiZlizEFXesy4o9ZRDoVndFD09XoJkeC/HCZbfcjdJsZx0AoHddWfhRw2JQWAqbKASonh9d+/3D02w4q2PvQT+9zz0dyid7neL9fVj7h1Tfv96e27u7ubgEAAAAwxDCzAwAAAABWQsEGAAAADETBBgAAAAxEwQYAAAAMRMFGVGptbZXNZtOmTZv6vO/1enXllVfqhRdeuCzzejweeb3... | [
"\\angle{QPR} and \\angle{OPM}",
"\\angle{QPR} and \\angle{QPM}",
"\\angle{QPR} and \\angle{LMP}",
"\\angle{QPR} and \\angle{NMK}"
] | null | 0 |
math | calculus | determine-continuity-using-graphs | false | true | Is f(x) continuous at x=3? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB/zklEQVR4nO3deXhU930v/vfsM9JIGu0SAoldtkACxL4ZCAQT4w0cF5xmsZOmdZo0bZ/b3puntzfPba+vb+5t0v6SOm7q1vXSunVCjTewwNisFgaBACGJTQjQgtAy0uzLOTNzzu8PWQoCBBKcLzMjvV/PkyfWSOejD+dozrznO9/zPTpVVVUQEREREZEm9PFugIiIiIhoLGHAJiIiIiLSEAM2EREREZGGGLCJaIi9e/di8uTJ2LhxIwDgsccew7vvvnvLn41EIliyZAm... | [
"yes",
"no"
] | null | 0 |
math | grade-8 | model-and-solve-equations-using-algebra-tiles | true | false | Which set of algebra tiles represents the equation 5x+3=8? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAANoAAAB6CAYAAADZAU01AAAHQElEQVR4nO3dX2yVdx3H8c95Tgsbpy3MdoVCFwSCE9gMq25NMIzFSOKfLMYUL0iM3hjDzeJNvZi6NJ2JTXblzS6W6O4MmRlZskWNNk0sGAlzqWwGEBlIM6D/jmIOnDKgz3m8OHTWM6rnPH++v/Z33q+bQntOv7+H5/fJOX0O59NcFEXR9B3p/XnpRigtRAKQUEtOas9LO9dJG9dIuenbUfR2yfWyAH/1d0gtF+arf+lZIz1aqKYQQDI3Qul8WZq6I/1tXgpKC9U... | 1 |
math | grade-2 | write-subtraction-sentences-to-describe-pictures-up-to-18 | false | true | Which subtraction sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAfQAAABkCAYAAABwx8J9AAAUPUlEQVR4nO3dbXBTdb4H8G+ekz4kDS1tSZMVAgWUh20pW61oBxeducqsoDKg4gDeu3eGEffKurqzc+WO64t1LvrGcXbGmb1zvQxrXS9Puiiw3uKsqENdtu2CEGxpCUIfwNI2baFJ2jzdFzGnSZPm+TRp+v28sefh/z/n2xl/P85pco7E5/P5QERERDOaNNMnQERERKljQyciIsoBbOhEREQ5gA2diGa8S51XMn0KYZI5J+YQz2zIIZ/G8yAiSrt9DYfRdKYVdbWrsGP... | [
"13 − 7 = 6",
"15 − 8 = 7",
"13 − 8 = 5",
"14 − 8 = 6"
] | null | 3 |
science | grade-4 | read-a-thermometer | false | true | Select the temperature shown by this thermometer. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAGQCAYAAADbbRRJAADnE0lEQVR4nOy9e3wTdb7//8ql6TVp5SLQpNxdSer9uCRV0N2ztKDu7vkuLQrirrS4qPs90oIFz1kBFfB8V0Bp8ZxVUVr2+10RacueXa9tPb9dEbYpq66uNkVBuWTKVS6Z9JY2yfz+SGfIZCZp0qZJWt7Px4PH0MnM5DNpkr7mNa/P+63gOI4DQRAEQRAEQRAjAmW8B0AQBEEQBEEQRPQggU8QBEEQBEEQIwgS+ARBEARBEAQxgiCBTxAEQRAEQRAjCBL4BEEQBEEQBDG... | [
"51°F",
"63°F",
"61°F",
"66°F"
] | null | 2 |
science | grade-8 | compare-thermal-energy-transfers | false | true | Emilio baked two identical cakes. When he took them out of the oven, he left one cake in its pan and took the other cake out of its pan to put it on a plate. This table shows how the temperature of each cake changed over 5minutes. During this time, thermal energy was transferred from ____ to ____. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAABfCAYAAACdpLOcAAAhQElEQVR4nO3dfVhUdf438Pc8MoiAPOmqqRDKY6LmqpC2sK6798pWpoK3BKSwYrncK2KsaSY3QWYZq1I/bhMlfyQtuma1N8qlbtSahOYDIiJuiqKYtiYBAjoww8z8/iBHeRrOwMDg8H5dF1dX5+F7Pt9zzuf4mTPfc0akzJfrQGRGiumlaPzmCXOHQfRIYx4RCaOY2WTuEIh6ndjcARARERERkemwwCciIiIisiAs8ImIiIiILAgLfCIiIiIiC8ICn4iIiIjIgrDAJyI... | [
"the surroundings . . . each cake",
"each cake . . . the surroundings"
] | null | 1 |
math | algebra-1 | surface-area-and-volume-changes-in-scale | false | true | Look at this rectangular prism: If the height is halved, the length is doubled, and the width is tripled, then which of the following statements about its volume will be true? | "iVBORw0KGgoAAAANSUhEUgAAALsAAACYCAYAAAC8qJjyAAAf60lEQVR4nO2deVyU1f7H38OAILuICIZiJKGRcQvTflEXFbPFzLxppqWZS4I7mvuWZqAmLpC7eNVSMS3TXDLRiyliLqggAoILqIAwsi8zwzDP748RrnZdYYaZgef9evF6MS/mec5nZj7Mc55zPud7JIIgCIiINABM9C1ARKSuEM2uBRITE+nSpQvdunUjOTlZ33JEHoJo9lqQn59PYGAgL774ItHR0Rw+fJh27doRGBhIQUGBvuWJ/A2J2GevGatXr2bGjBnk5eXR1NG... | [
"The new volume will be 18 times the old volume.",
"The new volume will be\n3\n4\nof the old volume.",
"The new volume will be\n5 \n1\n2\ntimes the old volume.",
"The new volume will be 3 times the old volume."
] | null | 3 |
math | grade-5 | fractions-of-a-whole-word-problems | true | false | At a public swimming pool, there are lane markers for adult lap swimming. The lane markers divide the pool into 5 equal-size zones. Lacey and Desmond decide that 4 zones are "safe zones," where no one can be tagged. Which model represents the fraction of the pool that is made up of safe zones? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAUwAAABKCAYAAADQQG32AAACIUlEQVR4nO3XP2oUYRzH4e9s/hQatRHFwi7qEYIHsPQuHsWzaOkBBG+gprMwolViAsYsr8UQ0e67oO4anqfZHWYGfm/z4TfTGGMcnSeHZ8nJMrkYASDJ9pTc2EoeXEvu7ibT0bcx3hyveyyAzXZwM9l+fzZf3NtNHl2fawrA/NX99jT5eJ68O0sWxxfzDbEE+N2NrbmNSfJ1mSyWv9wA4HeXbfw+ksV6RwH4fwgmQEkwAUqCCVASTICSYAKUBBOgtL3qC6/uv/4... | 2 |
science | grade-5 | predict-temperature-changes | true | true | Two identical blocks are heated to different temperatures. The blocks are placed so that they touch, and heat begins to flow between the blocks. The pair of blocks is insulated, so no energy escapes. Later, the temperature of each block is measured again. Which pair of temperatures is possible? | "iVBORw0KGgoAAAANSUhEUgAAAQQAAACgCAYAAADq8hJGAAAYfElEQVR4nO3de3gU933v8ffM3ld3oQsISSBAiJsBgwkBO7axMY7t+NakTt04ae20p83x87TNU6d125M2TZxenKTtSXzIaU9zxU1sN3Z8AWIbbHM3xjbYYJARQuiu1f2yWu195vwx0oDQIlYgaVbS9/U8PDwa7a5G+s1+5vf7zm/np+i6riOEEIBq9Q4IIVKHBIIQwiSBIIQwSSAIIUwSCEIIkwSCEMIkgSCEMEkgCCFMEghCCJMEghDCJIEghDBJIAghTBIIQgiTBII... | null | [
"iVBORw0KGgoAAAANSUhEUgAAAiAAAAC4CAYAAADaI1cbAAAh7klEQVR4nO3deXhc1X038O+9s48ka7E2a5c32cbYBuM4NqtZTICapaQQGkgK5G2b8NC8eQIpbZomDSRtCOn7NiHQ9G1IAiQBGnZsNhu8CjAYGxtbWJZl7Rrty2hGs9173j/uaGxJY3lsj+69M/p+nsePHo2t0bHP0c/fOfd3z0gABIiIAAgh4AkBDX7AqwARVgciShKrBGRZgAVuoMgOSGAAIaIoT1Bg97DRoyCidLd6FmA1ehBEZB5H/NrHOXagJkN7tUJElAx... | 1 |
math | grade-3 | reflection-rotation-and-translation | false | true | How has this figure been transformed? It has been... | "iVBORw0KGgoAAAANSUhEUgAAAPoAAABkCAYAAACvgC0OAAAOYUlEQVR4nO2dX2xT1x3Hv7Edx3biOMRQLX+gQQUnm5REWlIRaNfa2UNLURJphe6BDBUViaI9lGwrk9CC0oFaCTQtPFGm0qAGeBipVIKoQFrjtOuyIJIqJA+LQ6RmbTATxfl3E5vYMd5DMCV/fa59fe5x7u8j9SWc+zunPr/vvefP7/xO2ssvvxxxOp1Qgi+//BKRSARkL357brdbEVtq43Q6hf6dtWbP4HQ60dTUpIjB9957D5FIhOwlYG+tQH4llj2dIpYIghAaEjp... | [
"reflected",
"translated",
"rotated"
] | null | 2 |
math | grade-1 | read-a-calendar-ii | false | true | What date is 1 day before November 15? | "iVBORw0KGgoAAAANSUhEUgAAAssAAAF2CAYAAACYtNXtAABdI0lEQVR4nO3de1iUdf7/8SfDQQQF5OxZPJ/whOYBjVJLzexgbt/VbdfNrCxra+2nuezaYcvctKO1m+1ma2almVuiVqQWKHhIRVHxiGiIiIoICsjJmd8fxCjBbYMCw+DrcV1e6tz3zLznzT3Daz73575vJ4vFYuFQDCTHw/kMRERERKQaeAVD+3DoeIu9K5Hr4GQ5+IOFc8ehywhwcgaLxd41iYiIiDg2JyewXIJ90dCkBXS61d4VyTUykRxfGpQxKSiLiIiIVAeLBTB... | [
"November 14",
"November 13"
] | null | 0 |
math | grade-1 | count-sides-and-corners | true | false | Which shape has 4 corners? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGzklEQVR4nO2dTU8bVxSGj/mSmibtLlV+QFqp2y7yU/ojSxBS2DgLJBawiESMYkFiqCXEInYXsDCOPTYzc7uYEBmwPR773nPvPed9ViHEySh6sGfOvGfemjHGdMdE/w6IbjOi1BAAK7NRI3qxTvT6GdFvW0S17siYDz3fhwUk8+YXoo2LQfHFqy2iP34uLARgVW4zotY3os6Y6HxAtNZLi29AMmCTF+uFU0RE/YxoLZv4BgA2uXfqzhCt+T0UoAWIBliAaIAFiAZ... | 1 |
math | grade-8 | changes-in-mean-median-mode-and-range | false | true | Look at this set of 10 numbers: How would the median change if the number 37 replaced the number 40 in the set? | "iVBORw0KGgoAAAANSUhEUgAAAYkAAAAkCAYAAAB8KMY5AAAKQ0lEQVR4nO3daXBV5RnA8f9dkps9IRvLDUtWEpAAESIRXEBIFGKBai1Wq7bVtjPacax1hs502uk3P9WxtZY6iNW6ALXWqgSDQcKigUBkCYRsJAESAmRPyHJv7tIPN4RekktO4Jzc4/j8vuWcN7wP53nf97lnuzG43W43gMMBAwPgcgFuhBBCfNcYwGiEoCAwm4c2ud1ut20AbDb/xiaEEEI/LBawBIHZ6ZACIYQQwpvNBiYzGKVACCGEGI3dBkan099hCCGE0COnE4x... | [
"no change",
"decrease",
"increase"
] | null | 0 |
science | grade-3 | classify-rocks-and-minerals-by-color-shape-and-texture | true | false | Select the brown rock. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAADEzElEQVR4nOz9yY9kS5bmif3kzoPOqja6+xsrhszKaNbUQxEE0WwQIMBtc8ENt/xzuOOWfwEX5KYBAg30gkQzSdbQmRmZES/e4P58sFFn1TvfK8KFXBFTf2NURWZWRdYTIML8mZmaXr1XjpxzvvOd7willOKn9dP6aX3ncv5DX8BP66f1H/P6yUB+Wj+tH1g/GchP66f1A+snA/lp/bR+YP1kID+tn9YPrJ8M5Kf10/qB9ZOB/LR+Wj+wfjKQn9ZP6wfWTwby0/p... | 0 |
math | grade-2 | fractions-of-a-group | false | true | What fraction of the shapes are circles? | "iVBORw0KGgoAAAANSUhEUgAAASgAAADeCAYAAACOu52pAAAZ50lEQVR4nO3dy29c9f3/8efMmWOfGdszNk3ixAkOEnYREk7ohrSVMKhShUAiGwQbDCucXco/EFbQHaumqyarJN4UukmloIivKmykqu4KG9APaqPi4EtC3Hh8mzn2ucxvMR6bunbiuZ1zPPN6SJEi2+N5v48+fs25fT4nVigUCoiIRFA87AJERPajgBKRyFJAiUhkJcIuQETC402PAVDILwMQS2YAMPoGQ6vppxRQIk3An53A/fKvuFNjeHNfQH7lYC9MpjFOPkuif5D... | [
"7/8",
"8/11",
"1/3",
"4/11"
] | null | 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. | "iVBORw0KGgoAAAANSUhEUgAAAmYAAABZCAYAAACUn+jbAAANb0lEQVR4nO3df1DU9b7H8deXhWW9mbCKR+GYYaJRSAfT8hJO6kQykBebzGszEg63wR+VzNT1zjg36nqnnJtNM8rMafJkQ+L1RMU0NVR2b3MdUW7pMZnETBOJUUuIO/cgWyjL2V32/uGFo4KwyLLf71eejxlmZP3uZ9/L5/N5zZv9Lvs1gsFgUAAAADBdlNkFAAAA4DIaM4TF0aNHZRjGVV9Op1OpqanauHGjOjo6hjTe448/ruzs7Buq5dtvv1Vqaqri4+Nv6P4ARi+... | [
"The magnetic force is weaker in Pair 2.",
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is weaker in Pair 1."
] | null | 2 |
technology | grade | icons | false | true | This is a(n old) logo of which famous app or program? | "iVBORw0KGgoAAAANSUhEUgAAAOcAAAEsCAYAAAA4rKTjAAApJklEQVR4nO2dW2wbaZbf/1VFsooskuKdlCzZkkyrJStuu912e1qe7mQ2072N7cFggCDTLwtksZj3AMnTJO8b5CF5WCwQpDEIFsEAi2AXCyM9nUzQszuDdU/3NLrHfRvfJV8k2daNF/FeIlmVB+qTaVmSeakreX4vtiWx+NnWX+d8/3O+83G///wGCIKwH7zVCyAI4mBInARhU0icBGFTSJwEYVNcVi+AeIqqNjWr18DzAmf1GogWJE6bUdpRsFYO4UlN2vvYesUHAMh... | [
"Pro Tools",
"Google Maps",
"Steam",
"Inkscape"
] | null | 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 | [
"iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOz9edwkVXn+j7/PObX09uzP7CvDzMCw74oICi4sKqIS9xhBDTGJRo18VIz5qUTjL4gSDSoSjRhiPgaDfkQloKKAIPu+DrMww6zPPGvvXVXnnO8fp6q7nxmWQUlQ09fr1a+Z7q6uOnVOVT3nPtd1X7ew1tokSTDG0EMPPfTQQw899NBDDz38fkJKied5CCGe76b00MMfJGQvcO6hhx566KGHHnrooYfffxhjSJLk+W5GDz38wUL2Auceeuihhx566KG... | 0 |
math | kindergarten | match-analog-clocks-and-times | false | true | What time does the clock show? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEJCAYAAADhBFPCAABPk0lEQVR4nO3de3RU5b0//vfee265zOQGckm4o5B4AeGURK3YUw1+K+r3d4RW0Z622IvtWscDPRXtWhZaQc/6VugRqmu1SoV69KgtxN/59oj9mUgvqUiiLbfKRJCrmQgxQMLObS579v79McmQIXN5ZjKTueT9WotFZubZM48h23z2sz/P5yMZhmGAiIiIiIhygpzuCRARERERUfIwwCciIiIiyiEM8ImIiIiIcggDfCIiIiKiHMIAn4iIiIgoh5jSPQHKAH4D8BswBv4... | [
"4:00",
"11:00"
] | null | 0 |
math | grade-5 | parallel-sides-in-quadrilaterals | false | true | How many pairs of opposite sides are parallel? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADiCAYAAAB0rbDnAAAfd0lEQVR4nO3deZRU5Z3/8c+tratXGhpoFllFVhsFjdEsJo7zi5M9Of5MzKJRY6IRMYkbRhPHTBLjghpBjQmTZSQxGseZeMx4Jk6Mo7/ENSCbgNjse0ND03R1V9dy7+8P8KEbGmy6q+qpuvf9Osfj863T0B84cs7H4vvUdTzP8wQAAAAgJ0K2AwAAAAB+QsEGAAAAcoiCDQAAAOQQBRsAAADIIQo2AAAAkEMUbAAAACCHKNgAAABADlGwURQW7X5WP1r8eS1p/ovtKAA... | [
"no pairs",
"1 pair",
"2 pairs"
] | null | 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. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAALOCAYAAACTXGSDAAEAAElEQVR4nOzdd3yb5b3//5e8Z7xHvDMcO87wyLDj7EkgiwxK0zDCOkDLadpCF+W050tbTn+nhfYwWgptCbNAIAHi2IFMZ0CcZcexYzu245147ylLun5/GN/E2CEOkS0HPs/HA2LfuqX7I+m29Nala+iUUgohhBBCCCGEWVhZugAhhBBCCCG+SSRgD5HU1FR0Oh06nY64uDhLlyO+hbZu3YpOpyMmJsYst/f222+zcOFC/P39sbW1xcvLi6VLl3Lo0CGz3H5CQgI6nY4... | [
"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 | pre-k | ordinal-numbers-up-to-tenth | false | true | The first picture is a star. Which picture is tenth? first | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAkYUlEQVR4nO3deVxTZ74/8E9CEkggBmRTQAQrooJ1qaOiaKm2UsfrUuvCaFuttbd2+nvNdZvld2deLp3OnXbGau9vOtVOtXa59qq0thWrYt1aqVtdUHHBFQERQSQhhoSEJL8/jkTCloWTc05Ovu/Xq69qODnn4dtvn3zznOc8j8Rut9tBCCGEEEIIYYWU7wYQQgghhBAiJlRgE0IIIYQQwiKfFdhaix3J+XUYfEAPrYVmoRBCCCGEkMDgVYH9zR0LVl02dVg4H7rXiJJ... | [
"rocket",
"star",
"moon"
] | null | 1 |
science | grade-7 | predict-heat-flow-and-temperature-changes | true | false | Two solid blocks are heated to the temperatures shown. The blocks are placed so they touch. Which diagram shows the direction heat will flow? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAT00lEQVR4nO3dfXRcdZ3H8fedyUxmkrRJH6APNKVAaWkpNAV5EAQqVl2UooCAuut61of16C7rHj267KpHj6JHUfec9XEfVFZRBHQLtkBBW1tLSyG00BZKH+kzTdo8Nslknu/dP355JGlJOzf33sx8XufkTOaXyZ1f8pv53Hu/9/7mWo7jOI0Z2NsNnXnIOYiIuKLMgnFhuLACpkTBakw7Tn2H390SkWJ31Xgo29Nt7kyLwtxKk0YiIm7ozMOuBDRkYHc3hDpy5gc... | 1 |
science | grade-3 | identify-solids-liquids-and-gases | true | false | Select the liquid. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAAkp0lEQVR4nO2deXiU1b34PzOTZZashBAIYZEtQIAQEEjYIcgiVBQsmKBge+vVVqq1ircXn3ptbdVWUaulV6u2/hBBFLwiGCIakhB2AlkgkAUIJJEQIDtZJsnM+f1xMpOEHUmYSXI+zzNPmHfmnTnv+PF73rN9j+ZguRDBJvDUoVDcUSotkFUFhXXg6wITfeRxrRJS4Sg8dRBskv++ZGk6rlVCKhyJzb960XRM65iiKBTXRkmpcDqUlAqnQ0mpcDqUlAqnw8XRBVA... | 1 |
math | grade-7 | bases-of-three-dimensional-figures | false | true | Look at this figure: What is the shape of its bases? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADWCAYAAADrRvVcAAAjfklEQVR4nO3daXyU9b3+8Sszk0wmKxBCgCSCREAMAQFRjKyiIYFSsCoWRf/Vttpi66ntsWhdj1q34rFai0vVooi0KKfWSkCBgiyBqqgQEBRBloSQFbLOJLP9H4SMCSAGmMk9M/m8H/HKPZn7O5AHVy5+9+8X4fV6vQIAAADgFyajBwAAAADCCQE7SJSUlOgvf/mLrrzySiUkJCg3N1clJSVGjwUAAIBTFMESEeOsXbtW+fn5Wr58ubZs2XLc9a5du+rVV1/V1KlTDZg... | [
"hexagon",
"square",
"octagon",
"heptagon"
] | null | 1 |
math | grade-2 | write-subtraction-sentences-to-describe-pictures-up-to-18 | false | true | Which subtraction sentence does the picture show? | "iVBORw0KGgoAAAANSUhEUgAAAfQAAABkCAYAAABwx8J9AAAdnUlEQVR4nO2de2xc153fP/Oe4WNIDik+bFKkJZJ6WbREJ7Ior604L8fJpipqI06gwhBiNdgiXWT9R7t/FGmBGv1j+1ezQIKm8BZKXKWJ10acYr2mH+tYqmyaipeyFYcPcSSSIiUOOZwhOeS8753pHyMO53KefIw0pH8fQDDva+75kL7zveeec8/RxePxOIIgCIIgbGv097oAgiAIgiBsHgl0QRAEQdgBSKALgiAIwg5AAl0QBKFEuOYcu9dFSGMjZRKP4pGrTMa7WA5... | [
"14 − 6 = 8",
"13 − 6 = 7",
"13 − 7 = 6",
"13 − 5 = 8"
] | null | 1 |
math | kindergarten | match-analog-clocks-and-times | false | true | What time does the clock show? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEJCAYAAADhBFPCAABaPklEQVR4nO3de1zT59k/8A+IAYF4IBwMbTWgglrSw2gLqK0orfYEttW2ytY93dQ+T7utsq2n4baufR5p160btL9u3dS127poV20r2LWiKKgFbKVdGzyANUStwSDxFIIQUH5/sKREc7gTEnLg8369fEmS+/v9Xmry8sr9ve7rDuvr6+sDERERERGFhHB/B0BERERERN7DBJ+IiIiIKIQwwSciIiIiCiFM8ImIiIiIQggTfCIiIiKiEBLh7wDI/86bL6Czuxemrt7+37v... | [
"12:00",
"7:00"
] | null | 0 |
math | grade-2 | place-value-models-up-to-hundreds | true | false | Which place-value model shows 106? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARoAAACSCAYAAACaJwW7AAAV7UlEQVR4nO3daYwkZ33H8e/zPNX3PbM7s7u+MD4Q2MQ2BBsw5hAiiMMEggVKsKI4RHkTwhEhESmKUEAiiZQg5U2iREpQiJQEWzhgYw5fxNgQcHAwKAe2wfaesztX32ddeVHdO9093b2GraoZm/9HGq1X/fhfz/RO/eap53mqWvm+758ewE860HTB8RFCiPNiKSgYuCILq0lQp/u+/2hjr7slhHihuqEI1lOd4C+Hk/CSXJBCQghxPpouPNGGtQE82QHdcIIXJGS... | 1 |
math | grade-2 | identify-repeated-addition-in-arrays-sums-to-10 | false | true | Which addition statement describes the array? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAD8CAYAAABNcdMMAAAZfklEQVR4nO3dP28bR/7H8Y9+MOzqtFv4OhlLn6vTFSS7BAFCqrINHCC6sK80DeRq6uAHwNUTiKgHYIiuBBiItSxcBAmgVa4wXHFSyKkCrKFzpQBe6ipW+hXK0qb+xFxxuJLm3q+GJsUZzrf7YPzdmbkwDA+FK6/dbl/0EgAAACDp/y56AQAAAIBLrmX/YAf0alpdXb3oJQAAAOAT7GADAAAAFhGwAQAAAIsI2AAAAIBFBGwAAADAIgI2AAAAYBEBGwAAALCIgA0AAAB... | [
"2+2+2+2",
"3+3+3",
"5+5"
] | null | 0 |
math | kindergarten | count-to-100 | false | true | How many flowers are there? | "iVBORw0KGgoAAAANSUhEUgAAAbgAAADcCAYAAAAC2LRLAAAvpUlEQVR4nO3deWyT9+HH8Y/9+PHtxME4DgkFp1ACE+NooBylU8fKNHU9YKtUhqp1rQpUk6a1rNVU7eg0rWolOnXbj7H10Kp1B5q0Va2KOhCMUq3AFqpyNFAGKYFCIA6Y2NiOz8f5/ZHGxH4eH3H8JH6cz/sv/NjJ8+JLxDfPrRscHBwEY4wxVmPpJxrAGGOMqREnOMYYYzUZJzjGGGM1WcUmuO4uPyLhRKW+nerRq270qhu96kavuo2X11CJb9Ld5cfWzXtgSgq47aF... | [
"37",
"48",
"38"
] | null | 1 |
math | pre-k | cylinders | true | false | Which shape is a cylinder? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJ8AAACfCAYAAADnGwvgAAARfElEQVR4nO2dW2zkWFrH/8cu23VxVeXS6SQ9SzLNbDfTQQv09DDDajUBMUi7g0CC5YEXQLztPC48zgUJbc/uEyAeW4IXlickBgm0s7Mwuw89QoNam4y0iybaScN00kyn0p1OUqm7XfbhwVW+VCqpslO2j8vn99BdZZ/Yx67P55z/+b7zmVBKaUUD7jeBmgF0KTicUMgQoCgC1/LAogyQSofSeydxV4uTNl4uAZntpvVlWQZ+oWBZJocTBjUD+FkD2NOAT5uAcNK... | 2 |
math | pre-k | cubes | true | false | Which shape is a cube? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAUrUlEQVR4nO2d2XMc1X7Hv6f3nkWSLcsbxmKRMbZlbNlwCakKSdUND1TlVkilKuSFpyQv+R/ymrykKlV5u6m6D6mkErhsxmD7YhMgwA3YF2wwEGwTU8i5kWRp9ulZes/DmTOLNLK19Ewvcz5P8mjcczTznV+f7v6dTxPf9/0lC/ifOlB1AccHhxM5JAJkReBQCtijAGTJ9P0rlbCHxeFsnKfHAOn7Ov3HPgU4nKap5nCiRtUFbtaARQu4VQeEikN/wUPLiTJZkWY... | 2 |
math | calculus | describe-linear-and-exponential-growth-and-decay | false | true | How does g(t) change over the interval from t=6 to t=8? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABu2klEQVR4nO3de3RU930u/GfPXVckJCEJYQkwRrFkCSOBMRgMGAK2cdxAkuJ45eIep63TJE6z3rc9OXnTrNMsHzfrtEnfuHZOTk5T2+nblZy4sX1qsCBcxCVgcxmEQAKDLEBIgC6DRqO57vv7hxih4WIk2D+2Rno+/9gaNI++2ntmzzM/7ZmRTNM0QURERERElnDYPQARERER0UTCgk1EREREZCEWbCIiIiIiC7FgE9Goffjhh3j44YehqioA4Ne//jVOnTqFBx54AMF... | [
"g(t) increases by 2",
"g(t) decreases by 2",
"g(t) increases by 1",
"g(t) increases by a factor of 2"
] | null | 0 |
math | grade-4 | acute-right-obtuse-and-straight-angles | false | true | Is this angle acute, right, obtuse, or straight? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABKCAYAAACB4iNkAAAJ6ElEQVR4nO3da1BU9x3G8WdhV5CLXBQQLWgRIzgIxIB4AYrNrY3WSd90YmJim2TSYDoZO5kmdpJJJ22MNUnb6XQSJk6T1lSTvGrSVDupzQXwAgiJCkZIhMSVIchFYBGWyy57+oJgatQqcXcPLN/Puz3nzJ5n9tWzZ/7n97cYhmEIAAAAgFcEmR0AAAAACCQUbAAAAMCLKNgAAACAF/m0YDfttqu71uHLWwAAAAATitXXN9hT+J6CQoMUnztT37otUbNXxSkmM8rXtwU... | [
"obtuse",
"acute",
"straight",
"right"
] | null | 1 |
science | grade-5 | identify-magnets-that-attract-or-repel | false | true | Two magnets are placed as shown. Will these magnets attract or repel each other? | "iVBORw0KGgoAAAANSUhEUgAAAjgAAABBCAYAAADcx97WAAAGMElEQVR4nO3d/2sbdRzH8Vdyly+XL01a06W1gzKn235xDIdDEN2msh8UEVHGGKhMfxD8RZmy3x3oD2P7xT9AB/pL9QcnIkwQOyf4gxuObSBDWIXVbuu3NWlzbZImd/6QblOY1mRNbn7yfEDpL5f2XUhefd3d5+5Cvu/7AgA0pXRuSRNHZ4IeA8CdWFI46BkA4H+JXUPgnkbBAQAAxqHgAAAA41BwAACAcSg4AADAOHbxlCvfY7UczGUlwko/lgh6DABAB9nXP74h1YM... | [
"attract",
"repel"
] | null | 0 |
math | grade-7 | similar-and-congruent-figures | false | true | Are these shapes similar? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEFCAYAAADZm5BpAABMyElEQVR4nO3deViU5eL/8TfIMoIIo4hUBkKJKW6Z4IaopWkp7rmQppadyuzX4lon2zRNW76eczwtx9PRzDR3PWZqZSm5nLTUJEnlKG6nEJFFAYd1fn+MjBKWigMPDJ/XdXGNPPPMM5/JK/14cz/37WK1Wq2IiIiIiIhDuBodQERERETEmahgi4iIiIg4kAq2iIiIiIgDqWCLiMh1Gz16NO7u7phMJry8vGjWrBmrV682OpaISKWggi0iItctPj6eTz75BIvFQnZ2Nn/... | [
"no",
"yes"
] | null | 0 |
math | grade-4 | compare-fractions-using-models | false | true | Which fraction is greater? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAC0CAYAAACuelsNAAApDklEQVR4nO3df3xT9b0/8FdIkVKRFIRRq5JiC1gcNtR9FVxp0yGsiqMpE0rRSXupil5/tMLdt91DLkVl9F5lLfPh1O/KSHVurahNp/il/rgNlyqMXWkQuHD9tpgq2DLmTMAZgZZ8/6jnmLRpkzTn5Jwkr+fj4UPMj3M+PHzz8GX6zvutcbvdbhARERERkSRGKX0AIiIiIqJowoBNRERERCQhBmwiIiIiIgkxYBMRERERSSimA/ahQ4cwevRoaDQalJSUKH0cUpHu7m7... | [
"4/5",
"1/10",
"neither; they are equal"
] | null | 0 |
math | grade-4 | estimate-angle-measurements | false | true | What is the measure of this angle? Choose the best estimate. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAA/CAYAAADaDb8WAAAEeUlEQVR4nO3dT2jXdRzH8ffPPKibQ2lmqZt1CES6LfIQv3UIo5mXbZfaLHcJ1oKOhliQoFQGBUFpXkKaHgq1g5Zgdti8DNwhg3kIAgsMoWTOnCf7dhgtp1On/vb7/ns8TuP7O+zF7/T8fvl8+VWSJEkCAACoiQVpD6iXsZHh+P7Lz9KeAQBAwRU6sK9OjMe3n38Ur7e1xO4tL8WKNWvTngQAQMFVinhE5PzY2ThxYG8MHTk4fa2haVnsH/0txVUAAJTBwrQH1NLQ4cE... | [
"120°",
"45°",
"150°",
"90°"
] | null | 1 |
math | grade-2 | purchases-do-you-have-enough-money-up-to-1-dollar | false | true |
A tomato costs 80 cents. Do you have enough money to buy it? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADECAYAAADqBVUcAADS+klEQVR4nOy9d3wc1bn//57t2qree7FlW7blbuOGbTAYjOk9dBKSm56QhNy0m28SkhuSm4QUUkhCh1BswAUM2AbjXuWuYsvqvaxW2l7O74/VjiXcZGwg4Xfer5delmZnZs85M7v+nDPP83kUIYRAIpFIJBKJRCKRfCrQfNINkEgkEolEIpFIJBcOKfAlEolEIpFIJJJPERdc4DuDgoK1Liat78cZlNE/EolEIpFIJBLJx8k5CfxXW4P8uNJ3RuH+bleIOk+Eir4w9+z... | [
"no",
"yes"
] | null | 1 |
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