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-4 | acute-right-obtuse-and-straight-angles | false | true | Is this angle acute, right, obtuse, or straight? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABwCAYAAAAkAwevAAAL+ElEQVR4nO3df3CT9QHH8U+atpQktAG01SL9hS2TDi23Q7ebop643YknbMop2sMIoig7CtJzzB/o9JxsFooK/gBxBTudmz/gFOcdcArzJozbWYdsRwstLVIhWgglKW3Jj/1RxDmKo5Dk2yd5v/5qk5Ln0/715rknT2yRSCQiAAAAAFGRYnoAAAAAkEgIbAAAACCKCGwAAAAgigjs77BkbauWrG01PQMAAAAWQmD3Ys+BLl086xPNXdGksiKn6TkAAACwkFTTA/qbJWt... | [
"right",
"straight",
"acute",
"obtuse"
] | null | 1 |
math | algebra-1 | write-compound-inequalities-from-graphs | false | true | What compound inequality describes this graph? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAKhklEQVR4nO3da0xUZx4G8GdgBmSoijoKQ7Ug0dKbkogILJeu7prYWC9IqU4lkWKqJk3b9Ippuu6W1W7tRS12jSGis9ESV3a0qS3VzaJApGQyjBqtCZY2y01bA3UQ0Z05c3D2g0ILA3UGR17O4fklZJJ3vjx/HJOHd95zjsbj8XigIqWlpdBoNDCZTKKj3BPOMbJwjpFFLXMQEZE6aUUHCLSWlhbREQKCc4wsnGNkUcscRESkTj4XbLfbDbvdjsaKz+CJ+x13jug3Saf... | [
"$x<4$ or $x \\geq 5$",
"$4 \\leq x \\leq 5$",
"$x \\leq 4$ or $x \\geq 5$",
"$4<x \\leq 5$"
] | null | 2 |
science | grade-4 | compare-properties-of-materials | true | false | Which would smell the most? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AABBeElEQVR4nO29R4xl2Xnn+TvnuuddRGREmkhXviqLFEk1W1RTJHrUPWyBEoQWMFppIUGAQEBbAtJCOxLQUtoIkNm00AJGWxVnNJwRIEGtbnpWFcuwTFZV+gzvnn/XnG8W595nIiIzIzMjIyOz3h+48d67Pt7738+f76gf74i8UISywxRTHClaCXzQgaUQ6i58uWbX6ykhp3hcKDvwQtG+byej9XpKyCkeJzL+RTJa5+6750//+sGuoBQ0m7C1BdUqlErguiBy72M... | 0 |
math | pre-k | one-more-with-pictures-up-to-10 | true | true | Count the squares in this group. Which group has one more than the group you counted? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFACAYAAACGDgu2AAAHAUlEQVR4nO3aIY4iURhG0aoJgiBboFuCxrIOVoZkSeBZQ2/ijRgN6nZeevqcBbx8+dVNpdYxxlgAAIDEn9kDAADgfyKwAQAgJLABACAksAEAICSwAQAgJLABACAksAEAICSwAQAgJLABACAksAEAICSwAQAgJLABACAksAEAICSwAQAgJLABACAksAEAICSwAQAgJLABACAksAEAICSwAQAgJLABACAksAEAICSwAQAgJLABACAksAEAICSwAQAgJLABACAksAEAICS... | null | [
"iVBORw0KGgoAAAANSUhEUgAABDAAAAFYCAYAAAClCwyGAAALWUlEQVR4nO3dvW5cxxmA4dloJRhK7IIwGKRjk4SsWbjhLbjllankVUR3YdC9//oojirJFmBFxEmxYWHAJmj5RPNy93ma0ywW30wxWLx7zu5mjLEMAABgFcuyjBdvx/juzRivb8Z459M2wHvZbsb4+NEYf306xp+fjLEZAgYAAKzmxU/L+OLV7CkA9stnn4yxnT0EAADsk2/f7K5/eTLG3/+4+/YQgN/u9c0YX/84xj/fjvHNmzH+MHsgAADYJ6/e7a7iBcDv8/G... | 1 |
science | grade-5 | 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. An airplane's engines burned jet fuel made from petroleum oil. Wood burned in a fireplace, heatin... | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAp8AAADOCAYAAAB4pWlzAAEAAElEQVR4nOy9ebgkdXn2/6mtq6v3PuvMmX2BmWEYtmEVQUVQUVzeuBAjqBG3oEaTqD8TTTSaKCYxLsT4Ji6IYgh5UV98RRFBFtmXYWBYnIFh1jNnP6f3rq7190edb53qnj4zBxgwxrqvq68+p7uWb32ruvuu+3me+5HuL/v+ujRkFWLEiBEjRowYMWLEeF5QdWF7HaSK4/sx8YwRI0aMGDFixIjxfKPqguT7vv/bHkiMGDFixIgRI0aM3w+o0X9ede7pDAwMsm3... | 0 |
math | algebra-1 | identify-linear-functions-from-tables | false | true | The table shows a function. Is the function linear or nonlinear? | "iVBORw0KGgoAAAANSUhEUgAAAFQAAABeCAYAAAC98DOnAAAIOklEQVR4nO2ca0hUWxvH/46pVE4RoqSTo43CaOaYIgmZYloWb9iXfL1NSeUlI4TKsA9lgRXUjJCZqRhWA3nhSKTGGfAtIhkLy0Skm5A53sowIxt1mtRxvR8ODUx2PI0+u+ywfuAH15bnv+fHnrXYez8u/PFnI/sd+F3OUwQOKVwoMVwoMVwoMVwoMVwoMVwoMYuEKmw2m3H16lVUV1fj7du38PDwQEJCAjIyMmBvby9U7Kw8ffoUO3bs+O6xx48fw9XVdd4Zggm9cOE... | [
"nonlinear",
"linear"
] | null | 0 |
math | grade-2 | even-or-odd | false | true | Is the number of rectangles even or odd? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAClCAYAAABm8IozAAAE6klEQVR4nO3bsY0aARRF0RlrJYdQEhNtYy5lCyDdjJIgdDRuwJa+tRdh8DkS6dfwoqsRrPu+7wsAAJD49ugHAACAVyKwAQAgJLABACAksAEAICSwAQAgJLABACAksAEAICSwAQAgJLABACAksAEAICSwAQAgJLABACAksAEAICSwAQAgJLABACAksAEAICSwAQAgJLABACCUBva2bcu6rv/MZ9u28uulbDVnqzlbzdlqzlZztpqz1Zytns+67/ueHVvX6lQm/HopW83... | [
"odd",
"even"
] | null | 0 |
math | grade-8 | identify-congruent-figures | false | true | Are these shapes congruent? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEZCAYAAACtj1KJAABu70lEQVR4nO3dd1RU1xbH8S9VumDHQlHALogV7IpdwY7BEo1KsERjNIktphg1mmZMsYv6Eo1dsfcWewGUooIgWFBRRAQEae+PkUmIJajABWZ/1mKhd+6d+7vvRd2c2eccraysrCyEEEIIIYQQeUJb6QBCCCGEEEIUJ1JgCyGEEEIIkYekwBZCCCGEECIPSYEthBBCiAKxcuVKWrZs+dzxO3fuULJkSYKCghRIJUTe05JJjkIIIYQoCEFBQTRv3pz4+Pgcx0eOHEl6ejp... | [
"no",
"yes"
] | null | 1 |
math | grade-2 | read-a-thermometer | false | true | What is the temperature? | "iVBORw0KGgoAAAANSUhEUgAAALkAAAEOCAYAAADVFbYlAAAT4klEQVR4nO3dfXAb5Z0H8K9MgEIbe80x17uEJDLlNSTxmik5QgjaTUt5SVtL0OOlECQxx12hBVsw5eVgkMxAOY5SSbTQa5kiCVpypVwkM8ORQotWBEivcOcVjkkgDV4ngblCj6xDD27yor0/ZAmb2I5eVn559vuZ8dgE+/ETzzePn320v/25LMuyQCSwOVP5zTKZDHK5HHRdh6ZpB/1/SZIgyzI8Hg+8Xi9kWZ7K6ZGgXI1eyQ3DQE9PDzKZDEzTBACsPMeD05Ytw2e... | [
"20°C",
"35°C",
"30°C",
"40°C"
] | null | 1 |
math | grade-5 | is-it-a-polygon | false | true | Is this a polygon? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADVCAYAAABt0ofyAAAY8klEQVR4nO3dT2iT+b7H8c85KTS2KZFGqG0yVKhNBA9mwMJtd6bLU+2qwsEync0d7HZEl3eKcjkbZTzLCrO5DnWjq1Zn2XTXXIiXyXAGJqmCMmmPgUYakv4RWryL9HlO/zkm7ZM8z5O8XyCcGWfqbzgVP/328/v+/vTx48ePAgAAAGCJP9t9AAAAAKCRELABAAAACxGwAQAAAAsRsAEAAAALEbABAAAACxGwAQAAAAsRsAEAAAALEbABAAAAC7XYfQActrFd1PJ6RpK... | [
"yes",
"no"
] | null | 1 |
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/t0lAAAgc0lEQVR4nO3dfXCV5Z038F8AJbBUAinV8LJN0ICy6yQ0tAsyj4nS6UgxFa1uX3wpulJqZ9dq7Y7u7oymrXbZnd2FlmqrdatVu6W7aHEVS8eKoZZBXE8NY0sRXBIkEmqLiYIkUuA8f7TNUx4IEs6dc+ckn8+MM9z3lZzrG/jjfL1ynesuymaz2QAAABIxJO0AAAAwkCjYAACQIAUbAAASpGADAECCFGwAAEiQgg0AAAlSsAEAIEF5K9hdXV3R1dWVr+kAACAVeSvYTU1... | [
"negative trend",
"positive trend",
"no trend"
] | null | 2 |
math | grade-1 | open-and-closed-shapes | false | true | Is this shape open or closed? | "iVBORw0KGgoAAAANSUhEUgAAAQkAAABkCAYAAACVdcVUAAADwklEQVR4nO3dv24cVRTA4WNEZReukYxkGgvZvEB4C+KWygWFKyRcECmucOEilqhcUJCGFvMWPAGOEI0jORL1FrvtUjgjx2FzMt6d3dm59/teYI5Guz+N5s+9G9PpdBoAH/BJ3wMA600kgJRIACmRAFKf9nXg8WgS50eX8def//Q1wkxffb0XP/56HFvbm32PAmtho4+nG+PRJE4PL+Lm+nbVh27li4PP46fffxAKiB4i8W4gdvd34uzqZG3+jOPRJJ4/fRGvX70RCnh... | [
"closed",
"open"
] | null | 0 |
math | grade-6 | changes-in-mean-median-mode-and-range | false | true | Look at this set of 6 numbers: How would the mean change if the number 88 were added to the set? | "iVBORw0KGgoAAAANSUhEUgAAAPEAAAAkCAYAAABYONyVAAAI3klEQVR4nO3ce1SUdR7H8fdcYBocFQNECRXEG4KieCtB8dKSeTIzU9ksNC91WLVN7VQbu6lZp/vFLq651VlXTcnMvKTiekFdxfslXEFZQ9JFrspwGYa5PfuHNu4oxQPzjNOc83v9Nz++z8znzO/35XmeHzOoJEmSACwOGyarGbvkQEIQhN8iFaBRqQnwuwt/tfb6mCRJUq2tnjpbvXfTCYLQJAFaHQFaHVqrwy4aWBB8kMlWj59ag9okGlgQfJbJZkFtc9i9nUMQhGa... | [
"no change",
"decrease",
"increase"
] | null | 2 |
math | grade-2 | place-value-up-to-thousands | false | true | What is the value of the underlined digit? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAAiCAYAAABlRa5TAAAIqElEQVR4nO3dW0hU0R4G8G/GNMe0zLC8kxhdxLIsJSvNrB5U0Jeky/SgPZhdCKlQpItQJJMJOiRZZCEl6ZRSkJrRzTKlvOQl0eohNTVDzTQLlbQ5D4Mrd2qOOZ2Dh+8Hwl57//faa/v0sVmzlkyr1WpBREREREQGIf9fD4CIiIiI6P8JAzYRERERkQExYBMRERERGRADNhERERGRATFgExEREREZEAM2EREREZEBMWATERERERkQAzYRERERkQFJAnZTUxMiIiKwcuV... | [
"9,000",
"9",
"900"
] | null | 2 |
math | grade-5 | interpret-bar-graphs | true | true | For a statistics project, Brett observed the number of hits and misses scored by some baseball players during batting practice. Which bar graph shows the same data? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAC9CAYAAACJdQrFAABKAElEQVR4nO3dd1gU19fA8e/u0ouiIlgQQRRFEWyAJWJDJfYSTIw1JpbYNYlRovG1R2y/RI2xG2PvPbEEFTXGGo2xxChiLyACUneX3fcPZHUFFHUVy/k8zz7Jzty5c2Z2eTxz98wdBXPu6RFCvLP03R3yOgQhhBDiraLM6wCEEEIIIYR4m0iCLYQQQgghhAlJgi2EEEIIIYQJSYIthBBCCCGECUmCLYQQQgghhAlJgi2EEEIIIYQJSYIthBBCCCGECUmCLYQQQgghhAl... | null | [
"iVBORw0KGgoAAAANSUhEUgAABRgAAAHDCAYAAABPrnbiAADMQElEQVR4nOzdd3hUZfr/8ffMJJNeCIRuSAhFQiAUCVJDF0WQoCisDXURUcSyVlbXnwVQEFwVvirrqotioQQVAUWpgorSAqFIC70kQEhPJlN+f8QMDEkgCWUG+LyuiwvOc55zzn2eOQkz9zzFADgQEREREZELwuFwcMQCO/Mg2wZWvdsWERGRK4yXAYJM0NgfapnBgBKMIiIiIiIXzJFCB79nuTsKERERkUujfTB4uTsIEREREZEryY684r/rmKFpQPG3+yIiIiJ... | 1 |
math | algebra-1 | compare-linear-functions-graphs-and-equations | false | true | Function A and Function B are linear functions. Which statement is true? | "iVBORw0KGgoAAAANSUhEUgAAAjcAAAGlCAYAAAAGbtd7AABPcUlEQVR4nO3de3yT9d0//leSJj0kLYVCS+kxBYuHAmUiLSoiKAIe7tsDB08M9avs3mQKU7fp7uF0u93tJvMwTz+PG+rEVTYBp7ityC2KpUOFFaRFTQMtpWkpDc3VK+dcvz9YMkKhSXtdzZWkr+fj4YNH0qvv6534zqfvXNc7VzSSJEkgIiIiShJatRMgIiIiUhKbGyIiIkoqbG6IiIgoqbC5oZh6+umnodFoTvvf1VdfrXaKYUpLS6HRaPDOO+/EfN+zZ88OPS8bN26... | [
"The y-intercept of Function A is greater than the y-intercept of Function B.",
"The y-intercept of Function A is less than the y-intercept of Function B."
] | null | 1 |
math | kindergarten | circles | true | false | Which shape is a circle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJgAAACaCAYAAABVCoEqAAAGS0lEQVR4nO2dzU4bVxiGP5ufRZq0q7TqBbS9hFxBbrQ3kgiBkFIWdJEFpMkCikql2CB7MNix53QxUMyHf8b2nHO+n/fZgGXBHH9+mHmM7JlWCCFcjoj+GhD1J0TjQACszXaL6NUW0S8viH7aJWpdDkP40Mu9LGCRN98TbX8aVDd+3iX67bvKPgDWpT8hOrkh+mdEdDogavfG1R2QCzTBq63KJSKiYkLUnkzdAUATPLj0LRC18y4FWAeCgahAMBAVCAaiAsFAVCA... | 2 |
math | grade-7 | identify-equivalent-linear-expressions-using-algebra-tiles | false | true | These tiles represent the expression 5(x+4). Which expression is equivalent to 5(x+4)? | "iVBORw0KGgoAAAANSUhEUgAAAf4AAABoCAYAAAAQJ5LPAAAJbklEQVR4nO3dQWxU1xWH8f+bGdeUsWOnjgeIXSigKLWdVLVTGykLFKEiJekq8iYLRDeoqpRa7cJsIrrxAsSOjReRaHZVA4rFilYq9YZKRTKVaVJhtzIgjwL2dExqyTDGFn7zuiACnDE08dznOW/u99sxSPfc+EM6Y/vZCaIoigQAALyQqvUFAADA1mHxAwDgERY/AAAeYfEDAOARFj8AAB5h8QMA4BEWPwAAHmHxAwDgERY/AAAeyTzvLycXLml++Zbzobu271Nf++G... | [
"5x+9",
"x+9",
"5x+20",
"5x+4"
] | null | 2 |
math | grade-8 | identify-functions-graphs | true | false | Which of these relations is a function? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAATIAAAE3CAYAAAApC812AAAXPUlEQVR4nO3dX0xb993H8Y8hgMFJYGmB7OmfwLP2CSpUkCUBokptyG7GRjpl2sq0Z5vUapW6rr3atPVmadWsUyv1YtLo2qlS0m2V2lTdFC2pkqlT2B1/WhSPmYyslYB2ewpmbUyIjY0BPxfmOHZsyB84HP+O36+bhIM55xcgH/2+v/M7/noSiURicl76MCLNLkoLCQFAXtvkkbYUS3dXSLWlkmcylkgMXnJ6WABwc9q2Sps+iCQ/+HyptNOXTDkAyGezi9KFsPT... | 1 |
math | kindergarten | represent-numbers-up-to-20 | true | false |
Which picture shows 7 rectangles? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAWAAAABcCAYAAABQrm8uAAACnUlEQVR4nO3dsU5TYRjH4fe0wICgi9G4oybeAJPGyc1b8WK8FN2cjCMXYIKwi9GJQhOQ5nM4IXExxeSUf0ufZ2lPTvPlezv88uUsp2uttZPLquNp1WRWddUKgAXY6Kp2x1VPt6seb1V1JxetHZymtwWwXvbvV20cTfuLJ1tVz+/1dQZgeJNZ1eF51ffLqm/TqtHpVX9DfAEWa3fct7aq6mxWNZr9dQOAxbpu7e9WNcpuBWB9CTBAiAADhAgwQIgAA4QIMECIAAO... | 2 |
math | grade-7 | identify-trends-with-scatter-plots | false | true | Does this scatter plot show a positive trend, a negative trend, or no trend? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFhCAYAAABK/t0lAAAkfklEQVR4nO3de3DU1f3G8SchYDZuQpoFzdVik00o1knIrpbLTIT+OiLCWlvr6Fjr1I5A7LQq0ot0phYrdtIOVGuVBpx6jZdOozMWqjhWCSgTsFmEsShJqARJ4nIJ5LJkQ7Jkf39QtoawQOBkv5vN+/UXe85mP59T7eTheL5nE0KhUEgAAAAAjEi0ugEAAAAgnhCwAQAAAIMI2AAAAIBBBGwAAADAIAI2AAAAYBABGwAAADCIgA0AAAAYFFMBu6enRz09PVa3AQAAAJy... | [
"no trend",
"positive trend",
"negative trend"
] | null | 0 |
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 | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAYXElEQVR4nO3deWDU9Z3/8efMJJOLEAIk4QqHHOEOVgOKilhtFxWsB6hdtfXo6tqu7bpWxYrHKlhatWK76m+t/Gp31VZBqAco4oVyI0c4QhLkSkIOkpD7mPO7f0wYCQkQyPD9TpLX4x+T73yPd/wMr5l5f7+f+doMwzCK3fBtPdT4wGsgIhISETaId8DwWEhxgq3YZRgbq60uS0Q6u0ndIWJPfeCXvk5IiwukkYhIKNT4IKcOityQWw/2am/gAYWNiIRavCOQLQC... | 0 |
math | grade-5 | understanding-probability | false | true | If you select a marble without looking, which color are you more likely to pick? | "iVBORw0KGgoAAAANSUhEUgAAASYAAADECAYAAAAyP4znAABm+ElEQVR4nO29eZgc1Xnv/znV23T3zGhWpNEgjSQktCAJYwkjjBmu2CSMMSASAQ4ELvZjsBPHj01yDcZcO7kCQZwLJE4Ijq/jAD8HcjEWgtyAbHCwkMwmBWGEFiQQWmYkMaPZp6eXqnN+f5yq6uqe0aw9i6T6Pjbdp7auU5r+9vddzvsKpZTChw8fPiYQjPG+AR8+fPjIh09MPnz4mHDwicmHDx8TDj4x+fDhY8LBJyYfPnxMOATH+wZ8+PAx/pDNncj9zciWbmRLF/J... | [
"neither; black and pink are equally likely",
"black",
"pink"
] | null | 2 |
math | grade-2 | place-value-up-to-thousands | false | true | What is the value of the underlined digit? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAAiCAYAAABlRa5TAAAEs0lEQVR4nO3dT0hUaxjH8e9xgnTI/gjVohQigoiKkiwKIpE2Q6sgEGxTi8QKWrSwFtEiNyVEtAiSFhFEabR0MW3KlTvJ2UxRi6bsDzgVY9OQZnXuQu7hDlfr6ox2597vZ/W+885z3kdXPw5z3hOEYRgiSZIkqSyqfncDkiRJ0n+JAVuSJEkqIwO2JEmSVEYGbEmSJKmMDNiSJElSGRmwJUmSpDIyYEuSJEllZMCWJEmSyigK2G/evOHcuXNs2bKFpUuXsnr1alpaWuj... | [
"200",
"20",
"2,000"
] | null | 2 |
math | pre-k | count-sides | true | false | Which shape has 4 sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGnUlEQVR4nO2d204bVxiFlznkIk3Sm6qHB2j7CHmKvmyrtE3Tm9wQKY3USMRNIAUFoaZGECkywVJczPRiBzDYxqe9939an2SBbXk8mM+emT1rL7eapmk6feDvHnA8AE4bELI0ay3g7irw7W3gq1tAq/OxaZ52pVeLeOb+PWDtdS9d+eYW8P1nyUJCluV4AGydAP/2ge0esNI9TXdQMpKTu6vJKQD4MABWBkN3EJKTc6f+a4AV2VUhUaBopAoUjVSBopEqUDRSBYp... | 1 |
math | grade-1 | read-a-calendar-ii | false | true | What date is 3 days after February 22? | "iVBORw0KGgoAAAANSUhEUgAAAssAAAF2CAYAAACYtNXtAABWP0lEQVR4nO3de1yUdf7//wfDgCgKiJxUNFFUPOAx84BEqaVlh91q+65u/dyys7YHdzWX1uqzrbnZYTdtP9lulqlbWvoxUStNW/CQmIqi4iEBERERFUE5H2Z+fxCjBJcOCgyDz/vt5k2d65rhNS+uueZ5Xdf7ui4Xq9VqTUzM5cCBC5w/X4qIiIiIXL+2bd3p29eL/v19HF2KXAeXvXvPW8+cKWH4cD/c3FwdXY+IiIhIs1BWVsH27Wfx82vBgAE+ji5HrpHpwIELDB/... | [
"February 25",
"February 26"
] | null | 0 |
math | algebra-2 | match-exponential-functions-and-graphs | true | false | Which graph matches this equation?
\[ y=-2\left(\frac{1}{2}\right)^{x}-2 \] | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAVUAAAE1CAYAAABX+HN0AAAeNElEQVR4nO3df3BU9b3/8ddufpIQEpEkKJUQ8VtSfgbSQqi9hthLAYW5glOiDlqJ2IsFb//AOwN2NN5rVewg850OV6k/inSsiIrXS9IG0DZO7TSBEgm9QBMoEBkwIRHZBBKySTbn/rHukpAA+XE255zs8zHjuHv2nPN5b5Z97fn1+RyXYRhGbav0j2bpgk9qNwQA6KVIl5QQIf2/OCk1WnLVeg1jX6PVZQGA880aIUUea/Y/uSlamhDvT1wAQO9c8ElVTVJNq3S... | 1 |
math | grade-5 | scalene-isosceles-and-equilateral-triangles | false | true | What kind of triangle is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADOCAYAAAAEw3WqAAAlJElEQVR4nO3de1yUdd7/8ffAcBJQPOEhVCgPmZoHQFFTxMx0H0NGUUvu4l3e28HOdtzWWivNzMrq19buuvej1q3ot1vOmIYioiSesFwsycK86ZfkUk4tgo7QcJrfH9akmynIzFwM83r+Od+Z63qr/7y9Ht/r+zG5XC6XAAAAAHhEkNEBAAAAgI6Egt3BfPDBB+rSpYvefPNNo6MAAAAEJAp2B1JVVaWrrrpKR48e1YoVK4yOAwAAEJBM7MHuGJqbm5WWlqaioiJJktl... | [
"scalene",
"isosceles but not equilateral",
"equilateral"
] | null | 0 |
math | grade-1 | time-and-clocks-word-problems | true | false |
Billy decided to paint his living room. After finding the paintbrushes and buying some paint, he started painting at 4:00. It took Billy 4 hours to cover all the walls. What time was it when he finished painting? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJYAAAA2CAYAAAAlHWAMAAAEUklEQVR4nO3dz0sbaRzH8fcktlJtdkXTlYiHorh7yElUgrTioRdRFvEkXoRisfj7oMfUIPaoB8WDmP4DBdH6K7cc7KHVRRF76yo9aKsurgrxBzQ28+whm1BJ7XaUZ4XJ9wWiPs9nHubw4RkzMI6hlFJ7Udg8g+MYfFEIYVmGAS4nlGRB/m0w9j4r9Ufkpk9L2InvJ8jYOIv/4rkNv2XHWyeEVccxeH8Ku1H48wwckS/xCSmVuA6XM94hgJMYOGJfTQhxHYkOnSt... | 1 |
math | grade-3 | division-input-output-tables-find-the-rule | false | true | What is the rule for this input/output table? | "iVBORw0KGgoAAAANSUhEUgAAAMkAAABtCAYAAAALS0X9AAAKoUlEQVR4nO3df0zU9x3H8edZQNDJCVqomKUOkVKKE6SixQidyywDaUUt9cdoZls6SymutIlLo+20uhiXRqU6plnNjEvrjraDDrB1dIqirEt/jLUgVOoPkCpaUBStgPDdH19RKbiv9pDPfb/3fiSXu/vel8sLjxff+3h+39ocDoeGEOKGPAAerV6lOoe4Ii9smbweLiQvbBmDVIcQwtVJSYQwICURwoCURAgDUhIhDEhJhDAgJRHCgIfqALckZBrM36jfXjsV2lrV5nE... | [
"÷ 3",
"÷ 2",
"÷ 6",
"÷ 4"
] | 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? | "iVBORw0KGgoAAAANSUhEUgAAALoAAAGQCAYAAAAZTnoVAAAoj0lEQVR4nO2dd5xU1fn/37tsYQtlC70sVUR6swBKERU0oCIgVqIhVkRjTPxpkm+MiSXRqGg02DAGUVQQFRE0iIAgIlVxBamLVIEtwPZddn9/PKzLsnVm7r3n3HvP+/Wa1/R7PnPnM2dOfZ6w0tLSUgyhUZgDh3dCxm7I2ANHdkH2YSjMg+J8KMqHogK5XZgr74mKhYj6EBkNkfXldlQMNGgKSe0gsa1cmnSU1xpCIswYPQjSvpbL7nVi6txMe8uLTYDk9pDSD9qfAyk... | [
"attract",
"repel"
] | null | 1 |
math | grade-3 | which-picture-shows-more | true | false | Which is more? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAlYAAAGUCAYAAAD3bWw9AAEAAElEQVR4nOz9PYwkS5bvif3e24eFBYklzAACdKNUJhCEp+ZBgchYqWK0aFDJWqmSUmdr2VoVpVsjTV2JdbWb2mRLkyWxUiBxQ3tR0kYAFMK1dPADsNLcARIwwy753Ljch6FwzD8iq253z5veN6+LcYCqiPRwN3e3z2P/8z/n/Kt//Md//Mfuv4P/+7+D//bfw3//j5zlLGc5y1nOcpaznOXPkH/zr+C/+M/gf/E/gv/Zfw7/qvv//OM//p//m3/pxzrLWc5ylrO... | 1 |
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, but some of them are different shapes. | "iVBORw0KGgoAAAANSUhEUgAAAngAAACtCAYAAAAj+wKPAAAhjElEQVR4nO3deXQUdb428Ke6k+7O3tnIKkQJGPYdRuCC8AYwioILiOjogMOoV0Rf9Oq4jXDV66gMoOdeQFFHXHDUERAY9PoKsoiDaA6bhGViWLNv3Ukn3en1/SMSRUjopbq2fj7neI7p7qrftznVT3+rq+pXgs/n84GIiIiINEMndwFEREREJC42eHSB/fv3QxCE8/4zGAwoKCjAH//4R9hstoDWd8stt6CwsDCoWg4dOoSCggKYzeaglici6opS8q6kpAQ33HAD0tP... | [
"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 | algebra-1 | compare-linear-functions-tables-graphs-and-equations | false | true | Function A and Function B are linear functions. Which statement is true? | "iVBORw0KGgoAAAANSUhEUgAAARAAAACZCAYAAADnwmWxAAAae0lEQVR4nO3de1RVZf7H8ffhIspFUlABURSYNC09KokXvKXibeFlAg1HzC46KVOOv+w3moO1zFSk0sjArDRTbFIrTX+arjGVHEPS8lpYopl4x0QBQeTw/P5gOHXkImz34XDy+1qLtWTfni+498e9n318HoNSSiGEEBo42LoAIYT9kgARQmgmASKE0KxaAeLt7Y3BYKj06+DBg1Yus/o++OADDAYDRqOx1tvevXu3+XfSuXPnWm//XnD06NEqz8X77rvP1iVamDBhAga... | [
"The slope of Function A is greater than the slope of Function B.",
"The slope of Function A is less than the slope of Function B."
] | null | 0 |
science | grade-6 | 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 | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAWKElEQVR4nO3deXAc5Z3G8W/PaKQZSb7lE1+A8YXB5j4MwYBDloBJIBxJNtndSthUJVtssmFDqIUsVDbJJpBsVdiQZHNuAiRAWAg2dyA2+ABsDLbxfR9Ylm1JliWNZjRX7x8/jca2hBGeUfeM9HyqXOPpafW8mu5+uvvX76txXNd16xKwtQ1a0pByEREpiDIHBgThtEoYWQ5OXbvrLm/2u1ki0tddMBDKtrTZk9HlMKXK0khEpBBa0rApCvsSsLkNAs0pe0FhIyK... | 2 |
math | grade-4 | identify-faces-of-three-dimensional-figures | true | false | Which shape has a triangle as a face? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAWyElEQVR4nO3daWwj530G8Ee8L4nUfZDaU9qNr3rduEnWid3GGyBp4E2dBLCTNGjSBkWOLzlaNPmSD0WC9EtTBC0QtEGAbFogidM2H7JGXKRZ1ytpZXs3ax3ctVfSag8dpC5KokhRPMV+GM6II3IlkRzq5fH8AENa8uVods1H77z/+c+wIZ1OpxfiwO0IEEoByTSIqEwMDUCjHui3AZ0moGEhlk5f3RC9W0T1571NgGEqIv2h2wSctkvpJKLyCKWAiU3AHwcmI4B... | 0 |
math | algebra-1 | identify-linear-and-exponential-functions-from-graphs | false | true | What type of function does this graph show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAETCAYAAAAMFHHvAAAbUUlEQVR4nO3dX2yc9Zkv8GcSBzt2ISGV7bQl63gXiM/GAueEhkTqok3PTdMyrehum6qUi67ERaVysepeccFWbUGsVO1NofSPBLQBqVS7VaQggbY6G8TF5g+dxRxMmnR3ZYfoQGKfUrtgx44Tv+ciOzN2YhKPPfb7vuPPR6o6njwePyRW5pvXz/t7CkmSJAEAANTFmrQbAACARiJgAwBAHQnYAABQRwI2AADUkYDNvCYnJ2NycjLtNgAAckfAZl79/f3R39+fdhsAALk... | [
"linear",
"exponential"
] | null | 1 |
science | grade-8 | use-punnett-squares-to-calculate-probabilities-of-offspring-types | false | true | In a group of pea plants, some individuals have yellow peas and others have green peas. In this group, the gene for the pea color trait has two alleles. The allele for green peas (e) is recessive to the allele for yellow peas (E). This Punnett square shows a cross between two pea plants. What is the probability that a ... | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAD6CAYAAADUdTPBAAAUCklEQVR4nO3de5CddZ3n8U93ujtJX0JId7hkiYTgZMEBBBJgcQcCBChYdHcFFccR1FEpC1222HG1ypH1L3GpGpmB2dqiLBUtxpVBFnGm0GJmCKuxuMQWVJYAS8DEkCu5kfS9T/fZPxKahISEkAOn+9evVxVVJ53zPM8vfP9555fnPKehWq1WAwAAFKGx3gsAAABqR+ADAEBBBD4AABRE4AMAQEEEPgAAFETgAwBAQQQ+AAAUROADAEBBBD4AABRE4AMAQEEEPgAAFET... | [
"0/4",
"1/4",
"4/4",
"3/4"
] | null | 0 |
science | grade-2 | identify-magnets-that-attract-or-repel | false | true | Two magnets are placed as shown. Hint: Magnets that attract pull together. Magnets that repel push apart. | "iVBORw0KGgoAAAANSUhEUgAAAfIAAAC6CAYAAABV7c9lAAAIDElEQVR4nO3dz4/cdR3H8dfM/urv3aW/QEiwoY2agAFiIEiFqFiChhg9CCEKMf4BXCDxokSjMcaDB25Go2JMJCWherKKFLQSDpWgIUGLgA1q7MK623a37E53ZzzsgnqAbmfbGd7s43HcznTfh3fynPnO5zvbGD74eif0zLbT7Ty+f7LfY6w547duzo67x/o9Bj008dB0pg6e6vcYa8r9N23JwV0j/R5jzWn2ewAAoHtCDgCFCTkAFCbkAFCYkANAYUIOAIUJOQAUJuQ... | [
"attract",
"repel"
] | null | 1 |
science | grade-8 | identify-how-particle-motion-affects-temperature-and-pressure | false | true | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | "iVBORw0KGgoAAAANSUhEUgAAAmwAAAGZCAYAAAA0Im0SAACU4ElEQVR4nOzde1xb9f0/8FcIlyQkQLmWAL1Dam/UQm9aLW3VqSVV57yUettPC962qeA2r6Xq1E1S/c4r1M3qFLR2c2uoOm9N6+w1tLS1l9B7gdDScg0QLgmf3x80pwkJECA3Tt7PhxVycnI+n6Tw7vt8rgLGGIMfq6u7gFOnTqOjox0CgcDb1SEEABAUFITY2DiMGTPG21UhPEbxj/giin+OBXq7At7U3d2NmpoaMNaN4OBgb1eHEBt1dRcQHx+PoKAgb1eF8BDFP+L... | [
"sample B",
"sample A",
"neither; the samples have the same temperature"
] | null | 0 |
math | pre-k | represent-numbers-with-pictures-up-to-5 | true | false | Which shows 2? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAZBUlEQVR4nO3daXCc933Y8e9z7LP3Lu77IkgQ4E2RESVRty3Jdi1VaeyM5ajjaeSmU8dx42bSdppp48ptbDcZN2mmEzmNY8fuaceJPJKsyLSkWDQlUgcpgpdAgiABECDOBRZ77z5XXywJCiZT94UWf7n8fd6IWDz77INH88Vz/h9ovu/7sxU4X4CsC46PEKJGTA3iBgxEoNUCbbbs+29kVC+WEDef2xJgjhaqX7RbMBit1imEqI2sC2fzMFOBcwXQM071GxKfELU... | 1 |
math | grade-3 | identify-trapezoids | false | true | Is this quadrilateral a trapezoid? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACkCAYAAACtrFmWAAAdAklEQVR4nO3deXhU9b3H8c+ZmewhhASMISApixEIS9ij4qMiXipVWhWrFi91qbcgdYGyWayiKAjFKlK1tkix1H25qLVUEFtcAAFDCLIIUVBCDCQkhOyZzLl/VE6SR7xCMjO/ZPJ+/fWbb/H8Pk8lz/Nxcs75WbZt2wIAAADgFy7TAQAAAIBQQsEGAAAA/IiCDQAAAPgRBRsAAADwIwo2AAAA4EcUbAAAAMCPKNgAAACAH1Gw/azCW6pHsm/W8j2zTUcBAACAARYHzfj... | [
"no",
"yes"
] | null | 0 |
engineer | grade-6 | identify-the-experimental-question | false | true | Identify the question that Naomi's experiment can best answer. The passage below describes an experiment. Read the passage and then follow the instructions below. Naomi prepared ten buckets, each with one gallon of boiling water and three tablespoons of black fabric dye. Naomi soaked white linen fabric squares in five ... | "iVBORw0KGgoAAAANSUhEUgAAAUwAAAEICAYAAAA0p80lAAEAAElEQVR4nOz9aZJsSZadi63TWW/ut4mMqqxHkMKJYAYUch6YCwbwhFPBWCACot6rzIy4cb2x9nT8ofapLlWzG1kQIdKDIjghHu7XmnNUt+5m7Ua3Vv/pP/2nWf/r+l/X/7r+1/X/R9d//s//+UOe20rS//6//78lSVVVqa5rNU2jqqrih67Xa/alqqrUtq26rlPbtpqmSXVdq6oqDcOgvu/DzW+fGcdR8xz0Mvev61rzPGueZ43jqKZpNI6jLpeLpmlS27aSpGEYNE2... | [
"Does fabric turn darker when soaked in a mixture of black dye and water for 15 minutes compared to 30 minutes?",
"Does linen fabric turn darker than cotton fabric when soaked in a mixture of black dye and water?"
] | null | 1 |
math | grade-6 | interpret-histograms | false | true | A business magazine surveyed its readers about their commute times. Which range has the fewest commutes? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAF8CAYAAAD1tsxgAAA4yUlEQVR4nO3de3xMd+L/8XdmkkgiRJAgQlFSpVIRpK6VtKIqirq01dJtFUWrq0rtbrer2/1+0y8tqi0/pd1qi+1qpVZ2W5d1axfFuMUtKEIkCJFIcxET8/vDI7NNBSM5M2PS1/Px2Mc6Z86c8/7MyKPvfHzmjJfNZrMJAAAAgCFM7g4AAAAAVCUUbAAAAMBAFGy41ddff63Ro0drw4YNLrtmbm6uxo8frz/+8Y8qKSm55ecfOHBAo0eP1vz5852QzhjvvfeeRo8erWP... | [
"1-20 minutes",
"41-60 minutes",
"81-100 minutes",
"21-40 minutes"
] | null | 3 |
math | grade-1 | compare-vertices-edges-and-faces | true | false |
Which figure has fewer faces? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAIAAAACACAYAAADDPmHLAAAS8klEQVR4nO2de1yT973H37kQhCgIAhooIigWtdZr1Vp1vc9htdZ5m4i85m4eWCetUqutl1WtHbIW6rbqq+0ROa7Vup2d0XJWusOsG/bVgtpUXahChaCIInK/k5DzR0xeUQIkkOQBnrz/yYs8v8uX1/PJ73l+T76fbyQGg8Fwow2KmqBeDzoDbgYxcgkMk0GkN4xUgORGq8GQVyd0WG6EYLYPyAubjH+oFHC/0qgON4OXej1caoTyNrjcBNI6nfGA++SLg2Ey47k... | 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+AAAR0ElEQVR4nO2dd3hUVd7HP9NLGiWEHglShRCKFOlFQREURMHyrCs+Kyz40sTy6vquuE0XXJpIERVYWUooUgQbKk03gEACEkqUHkJIL5NMv+8fd2YAU8j0Se58/pnMvfec88vzPffcc8853zMyQRCE62b4pQxKbGAVCFOHUMogSgFt9dBYDbLrJkE4XBzssMIEgt7RoMwoE780VUP7CLE2hKk7lNjgrAGyzHCuDOTFVvFEWOy6SZRC1Bag1AZy2y0nwtRNnNpaBJA... | 3 |
math | kindergarten | equal-sides | true | false | Which shape has 4 equal sides? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAEm0lEQVR4nO3dr28bZxzH8Y+dH6BrNzBpW8nYfoDh9c8ZW1RSWGkkZAUt6kDQhja0kfwB+QMCggIG5jSqYreJnVi1FedquWff3YDldVWTNLbvvs9zz71fKJFl3Re8ZfAhV8uyLOvE0uFQukikSSZgaas16c6K9NUt6fN1qdZ5k2V7A9dnIWT3PpZWnw2n/9xdl775aFohsKyLRGq8ltqxdDCU6oPJ9AMiQ57urEybkqQokerJ/z4A8jRrapxJdbenoCoIDSYIDSY... | 2 |
math | grade-3 | lines-line-segments-and-rays | false | true | What is this? | "iVBORw0KGgoAAAANSUhEUgAAAG4AAABuCAYAAADGWyb7AAAFq0lEQVR4nO3c3VITdxjH8V+ABHlJeDGQjXG01RkGGUdpFaIp7kbHK6htT7wCD+xhy4ztSasz9JR2uAu9A3V3m0YjtqJjg0NHRxwhG4hCYgyQhGwPAusSAwQ0JI88n7PMEvgz33mym+wfLLqu62Dk1FR6AWx7OBxRHI4oDkcUhyOKwxHF4YjicERxOKI4HFEcjigORxSHI4rDEcXhiOJwRHE4ojgcURyOKA5HFIcjisMRxeGI4nBEcTiiOBxRHI4oDkcUhyOKwxHF4Yj... | [
"line segment",
"ray",
"line"
] | null | 2 |
math | grade-8 | model-and-solve-equations-using-algebra-tiles | false | true | Which equation does this set of algebra tiles represent? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABiCAYAAABqHaQ/AAAKxElEQVR4nO3dX2xbZx3G8cd/Yqc4eOlCpKZzEClSBx2QaAOlSxhl7ZpdDQEKF0wLN1wwCW2gsooLhqoOTZWaKtxwxQVliMumlSYm0FCqpsGpQKKlaKUbWrWALS1xKy2q7GRJbB8utnqplpa4ed/XPq+/H6lSj+We583Plc6Tc+zjSBAEgQAAAAAYEW30AgAAAACfULABAAAAgyjYAAAAgEEUbAAAAMAgCjYAAABgEAUbAAAAMCje6AUArWxlNqtKPm98v7FMRsmhYfI... | [
"– 5x–5=10",
"– 5x+5= – 10",
"– 5x+5=10",
"– 5x–5= – 10"
] | null | 3 |
technology | grade | font | false | true | Identify this font type | "iVBORw0KGgoAAAANSUhEUgAAAPoAAABQCAYAAAAwa2i1AAAMM0lEQVR4nO2dzWrjyhKA6yT3NUx2RpjAPIVQArOffRazMc4sEvwQwl5kIJssZp99sBJMHiJYCSY74+cYfBeH0i2Xu7qrJWXOuen6QIzHVre6u366+k/5a7fb7cAwjE/N0T9dAMMwPh4zdMNIADN0w0gAM3TDSAAzdMNIADN0w0gAM3TDSAAzdMNIADN0w0gAM3TDSAAzdMNIADN0w0gAM3TDSAAzdMNIADN0w0gAM3TDSAAzdMNIADN0w0gAM3TDSAAzdMNIADN0w0g... | [
"Mickey",
"Vivaldi D",
"LetterGothic",
"Lucida Handwriting"
] | null | 0 |
math | grade-1 | compare-clocks | false | true | The clocks show three things Betty did Wednesday morning: Which did Betty do last? | "iVBORw0KGgoAAAANSUhEUgAAArIAAACiCAYAAAC9MC4yAABJDUlEQVR4nO3dd1xT5/4H8E8IM4OwR1WGgBMZ7lZBXHVXva2ztcXZ/lq1aq3aFqq92nm14rXeLmuxvdcutVXbuq0CbVFaGYqDoUAVCDMhCYQRnt8fKdHISsJIAt/368VLPDnJ+ZKczznPyXnOcziMMQZitlTV9ai4VQVZbhUqcishy62CsqQWtbI61FaqUFepQo20DhwLwNreEpY8Lqx4XFjZW8HOzQrCXjwIfewg9LaF0NsOXBsLY/9JhJg9yiUhpody2TVxqCFrXlT... | [
"walked the dog",
"got dressed",
"ate breakfast"
] | null | 2 |
math | algebra-2 | domain-and-range-of-exponential-and-logarithmic-functions | false | true | What is the domain of this exponential function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABlBklEQVR4nO39e3hU953n+35KVaW7hISEJW4SxhhsMMLGBhsMMQ6O7diJE0hncDJJnN7OpJ2Ok0zmPNknT053pjvb25Mz/aR7J5OkM+nOxE7vnJ2OO9gdgwXBAQOBGIwMAsk2YAFCAnS/1X1V1VrnD7kUZG4qWD9KJb1fz8NTqqLWR1+tVbXqW7/61Voex3EcAQAAAHBFTqYLAAAAACYSGmwAAADARTTYAAAAgItosAGMMnPmTO3du3fk+smTJzVt2jS1trZmsCoAALI... | [
"all real numbers",
"$\\{x \\mid x>-1\\}$",
"$\\{x \\mid x \\geq-1\\}$",
"$\\{x \\mid x<-1\\}$"
] | null | 0 |
math | grade-2 | select-three-dimensional-shapes | true | false | Which shape is a rectangular prism? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAQQ0lEQVR4nO2dS5Bc11mAv3NvT09Pz6tnRhpHBlk2kiwEsZVISQlCPDGRnQBVpEhgRaVYsaEKVmTJDpZZEdZUCliwgI28gMKkiF2hClwVKDnGliLZemvG0mg01vT0+97D4txzu2c0j+6e23O7z/2/zfRruv9RfTp97n/+8x+ltdYrDbhRgY0AWhpBGDpyCqZ9OF2E5/KgVupav/c07bAEoXsuzkDuesXcOZaHM5PGakEYNjYCuLYJyw34eQW8py3zhEgrDDPTvnE... | 2 |
math | grade-8 | apply-multiplication-and-division-rules | false | true | The number line shows an unknown number, r. Is – 5r positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAGB0lEQVR4nO3dT2iTdxzH8c+TLrHrH13BOv9gVwR36ATb2aatiPbgzTmMiOhFdDJBcbCdZA62eliHO7lNB4KbRbCIh3gQuotjRrfRpNamIzNMZe10ss1WprOhbWKTHdJk7WyttGl+edr369InP3r4wPMcPvz4Pr/HSiQSCQE21tLSIsuytHPnTtNRkCXccwBALnvBdABguu7evWs6ArKMew4AyGXPXbBjsZg6Ojrk9/u1aNEido6AWSjYd0ufBc8r2HdLwb7balhWpcq... | [
"positive",
"negative"
] | null | 1 |
math | grade-1 | read-a-calendar-ii | false | true | What date is 1 week after November 12? | "iVBORw0KGgoAAAANSUhEUgAAAssAAAF2CAYAAACYtNXtAABdbElEQVR4nO3deVxU9f7H8RcDIoqCAoK74ooLoqK5IJn7li1m3qvXX5ZaWbba1byUZrfMm3a7N1u0m5ZamaZWoqa4BSqpqShuuOJGuCMosqkzvz+ISYJjgwLD4Pv5ePRI5pyZ+cyHM4f3nPP9nnGyWCyW3Rej2J8UzaXMs4iIiIjInatc1o+mXiG08O5s71LkDjjFXoi0JGWeoq1fP8o4lwEs9q5JRERExME5ce3GNX45swLvsjVp4XOfvQuS22TanxTNPX59KePsgoK... | [
"November 13",
"November 19"
] | null | 1 |
math | grade-1 | compare-clocks | false | true | The clocks show when some friends washed the dishes Wednesday evening: Who washed the dishes earliest? | "iVBORw0KGgoAAAANSUhEUgAAAusAAACZCAYAAACWjHTeAAAeWklEQVR4nO3deXxU9f3v8ffJnklYAkkgUUkC4oMdQUpB2xqlpRX9sbjeYr0i6L1Ve7V1qz+rIFXrT4VWfbg+qjY/3HtBBVTAKkGL3tKIgmFRJASIEDYJCWQhy5z7R2CSIdssZ+acybyej0cennPmfOd8kofvw2fONoZpmqbgSOZzt0sfL7bs/coOJ6u2Ps6S94pPSVLuG6sVk9rTkvcDIgW5BJyHXKI7i7G7AHTgYJmlOx6rNVTXqXJxgd1lAOFFLgHnIZfo5mjWner... | [
"Nick",
"Jenny",
"Ian"
] | null | 1 |
science | grade-3 | read-a-thermometer | false | true | Select the temperature shown by this thermometer. | "iVBORw0KGgoAAAANSUhEUgAAAHYAAAHYCAYAAACYxhw7AABSD0lEQVR4nO19eXwURdr/tyeTBEhmkoBAbm7CqSuHq4jXXh6Ayq4XeOB6LQqu7qrrhbvv6oqi6L4KCJ7rCegeKojitf5eb0VluS9FkkBCIiHJzOROpn9/TLqnj6rq6u7qmYlrfT58inTVU8/zVNW3vk9XV/dIsizL6OGpq6sL4XAE4XAYnZ0d6OrqQjQqd+dRdHV1QXEzPT0d6enpyMhI1/w/A7169UJmZmaSPRGX/Mk2wEkKhcIIhUJoampCOBxGa2srrOanLMuQJIm... | [
"25°C",
"10°C",
"35°C"
] | null | 2 |
math | pre-k | tally-marks-up-to-10 | false | true | Count the tally marks. What number is shown? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABBCAYAAAAngwHRAAADyklEQVR4nO2dv1MTQRTH34UzSBFImAkFzhhmbMEMBXbByhKpLKWjxMrS0r/AsVMbaxqx1CZQWFg4YShsnOGYsYkz4YACJEfOgmHkOLJv393j7oW8Txky3/3xvX37brO7OGEYhqCIoZB3BZQoRkOanR5s7vfYChs2vSS4Vz/wA4CXP7uw0T6Dg+D/58+nR+DVAxdmxhxSAX4A8PpXFz7+5tN76wXwxgtE6qXFuTyHfGr3YHXnNFKxy0y4AF8WRqFesqtk6yiEJ9//sun... | [
"3",
"10",
"2",
"4"
] | null | 3 |
math | grade-2 | choose-the-appropriate-measuring-tool | true | false |
Which tool would help you add the right amount of curry powder to a recipe? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJYAAACoCAYAAAACcRc/AAAUe0lEQVR4nO2da0xb5/3Hv75gO8EGUyi3cs0F/7esMVsTAluXhGqNW1WNO3UlW14wpVvVTKq0vdgLJqXdu6qbJk2qJq0vpipqtaXptlYl2dpMNFOihoiEtibgLiaBcEnAlJttbHOz/fu/MOfYB5trOMcm/D4SsnzOc+znwIff+T3Pec7zqIiI3HPA7SAwFQZCBIZZM1oVYNIAu7cDBTpA5Z4luuZLdbWYB4kDWYD2VjD6pkgHWDKj1jHMWpkKA64AMDwHdAcBtS8... | 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. | "iVBORw0KGgoAAAANSUhEUgAAAiAAAABmCAYAAADyFypEAAAcCklEQVR4nO3daVRUZ77v8W9RDAWUIAoqiAYVDUg0TqCo7YRDUE80iYkZtBPT7dF0YoZ1ck73ujfpm3WSrNvpzurEdXM7MZ3raad4MnSftFFzkghKEicGB1SccGZQUQqwKAqo4b4wRcdgtAp27b2r+H/W8gXUrr2fwoeHf+36Pc9jcLvdboQQQgghVBSidQOEEEII0fVIARLADhw4gMFguOFfeHg4aWlp/OY3v8Fqtfp0vgULFjB9+vQOteXQoUOkpaXRvXv3Dj1fCKE... | [
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1."
] | null | 1 |
math | algebra-2 | match-exponential-functions-and-graphs | true | false | Which graph matches this equation?
\[ y=-2\left(\frac{1}{4}\right)^{x}-2 \] | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAVUAAAE1CAYAAABX+HN0AAAdYElEQVR4nO3dfXBU9b3H8c9uyAN5MLHmyfoQAvaSAmoglSQtQ8QOBRRnCk5FGWwBpRdrnN4Z/UO914vTaRU7NjPX6/hQUaSlotfKOAaHB1vDqGMShsCiyA1wgWjBJBuBDSQhCdmc+0e6m10SIA9n95yzeb9mHHfPnrO/b3bPfjhPv99xGYZhNHVL/9chnfVLPYYAAEM0ziWlxUnfS5ZyEiRXU5dh7DpjdVkA4HzFV0jjDnf0Pbk6QZqc0pe4AIChOeuXDrZLjd3... | 1 |
math | grade-8 | identify-congruent-figures | false | true | Are these shapes congruent? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEXCAYAAACXhTP5AABbmUlEQVR4nO3deVhUdfvH8fcwDCDIKiiaqAhi4C/3LUtzyR13XCJaKEvNxDWl0swyNXPD3E2t1NzAPfctNXtcMESFFFRKjEQREEQRhvn9gY6SSyoDZ2a4X9flZbOccz7neubBmzP3ub8qnU6nQwghhBBCCGEQFkoHEEIIIYQQwpxIgS2EEEIIIYQBSYEthBBCCCGEAUmBLQAIDg7ms88+K/Bcbm4u1tbWXL16VaFUQgghhBCmRwpsAcDJkyfx8/Mr8Fx8fDwuLi64uro... | [
"no",
"yes"
] | null | 0 |
engineer | grade-6 | laboratory-safety-equipment | true | false | Select the gloves. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AABAqUlEQVR4nO29d7xkV3Xn+1t7n1jp5tutbrWkVkAoWiCSQTIIcCAZbEsyfgSPnGTGHzx+DoOfx++N7LE/H489Hg8ef5jBCLAxPH9o0mOwwRpjJIxsgxCSLBEkJNTKHe69fWPViXuv98epqlvh3Bwq9P7yaVTnVNU5q+456+y1116BsEucDoK/JOCdu3W8Nfgr5XnvOkhU3ePzGAxDBe3GQWaq1WshxD0AxG4cbz0Y+CYR3TjleY/s9bkMhmFhdxRTiD/YtWNtAAF... | 0 |
math | calculus | find-limits-at-vertical-asymptotes-using-graphs | false | true | The graph shows f(x). The dashed line is a vertical asymptote. | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AAB4Z0lEQVR4nO39eXRU550n/r9rr9IuJJCEQGIz2MISNhgwNhgSk5g2iWNI3E76m623byaTrXN6+pt0H598f5OhMzmdTvJNj5P2dE8mdnd6Ook7jhMbyzYOGLAwYAQIJDYhgxaElpJqX+5S9/7+kKpQgZaS6j6qkur9OscHq5Z3PRSqW5966nOfx6Trug4iIiIiIjKEOdMDICIiIiKaT1hgExEREREZiAU2EREREZGBWGAT5ZCDBw9i2bJl2L17d6aHQkRENG+ZeJIjUe7... | [
"$\\lim _{x \\rightarrow 4^{-}} f(x)=-\\infty$",
"$\\lim _{x \\rightarrow 4^{-}} f(x)=\\infty$"
] | null | 1 |
science | grade-3 | animal-adaptations-beaks-mouths-and-necks | true | true | Frillneck lizards are reptiles. Their predators include owls, eagles, and snakes. The lizard uses its neck to appear large and scary to a predator. Which animal is also adapted to use its neck to appear large and scary to a predator? | "iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOzdd7xlVX3w/88qu5x667Q7lZlhaAMDCEpRpKkUFVSiomhiopgQY+Exsfye6ENI9In1iQQNRlHEjhEJRiNGgzQRGGBk6FOYXm87ZddVfn9cuS8GQQYcRc15v17zes05Z5e111lr33XW/q61hPfeG2NwztHT09PT09PT09PT8/tJSonWGlGWpe817nt6enp6enp6enp+/0kpkb3GfU9PT09PT09PT88fBucc8tlORE9PT09PT09PT0/PvtNr4Pf09PT09PT... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOz9d7xtZ1Xvj7/HU+aca61dTkkPKSQhtIRAFKUI0qUpeM0FqVeU4s2PL2AEQSxciMKVUO4FQUFAkCblglwUJF790qUlJF8SAhIS0uspe+9V5pxPGb8/nnU256SQkxCNctf79To5Z6+91izPfObM+jxjjM8QVdUYIzlnFixYsGDBggULFixY8B8TYwzOOUTkjj6UBQt+IjEL4bxgwYIFCxYsWLBgwX98cs7EGO/ow1iw4CcWsxDOCxYsWLBgwYIFCxb... | 1 |
math | grade-3 | select-fractions-equivalent-to-whole-numbers-using-models | false | true | Count the equal parts. What fraction does this picture show? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAABkCAYAAAC8REciAAApJUlEQVR4nO3de3zT9b3H8Vea9H4LFFpK6ZoCFsSWZlMp4lwDODfPBIpMXXXacCZO3YWo21S2HepxsLnpbN3FncFmOG56JiIF51QESXGK3DSVe7k05U5L26T3S5qcP0KvSdokTYFun+fjwYOS3+2bvv/4fvj+fr/vV+F0Op0IIYQQQgghgiLkcjdACCGEEEKIfyVSYAshhBBCCBFEUmALIYQQQggRRFJgCyGEEEIIEURSYAshhBBCCBFEUmALIYQQQggRRKrL3YCBtJw... | [
"2/2",
"2/6",
"3/6",
"6/2"
] | null | 3 |
math | kindergarten | rectangles | true | false | Which shape is a rectangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGT0lEQVR4nO2dS08bZxSGX3NbpEm760VZ97Lpmj/T39cEBSkbuonUDbsYkBIRlKZUiEUCVIIFOEYO2EwWn2go2Nhjz3e+c3kfyRL2zMQj9OB4zrznO62qqqqjC+Cfc6AzAPoVCJmZhRbwaB748QHw3RLQOvpUVe2z0qdFPLP8NbCwe56e/LAE/PxVspCQWekMgHdd4PAC+PscmDvrpw2UjDTJo/nkFAB8HABzgxsbCGmSa6cuK2Cu7KmQKFA0IgJFIyJQNCICRSM... | 2 |
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? | "iVBORw0KGgoAAAANSUhEUgAAAQkAAACxCAYAAADXhkjIAABYY0lEQVR4nO29e3Bcx33n++kzT2DwBkiCb+oFUS+TdmTZimzZK9myYuturES2/Li1ih+7JSVVt7LaVKV2bceO997dzSZru+ruXtfakR9bsVeJkijxSlnbkuVYUSL5JROyLNIiRVIkSIIA8RxgMHNmTvf9o7vP6XNmAAIgAALU/KrIxjnz7tPn29/f79f9/QmllKJpTWta0+Yx72J/gaY1rWnr25og0bSmNW1Ba4JE05rWtAWtCRJNa1rTFrQmSDStaU1b0Jog0bSmNW1... | [
"impossible",
"certain",
"probable",
"unlikely"
] | null | 0 |
science | grade-8 | use-scientific-names-to-classify-organisms | true | true | This organism is a Chinese mitten crab. Its scientific name is Eriocheir sinensis. Select the organism in the same genus as the Chinese mitten crab. | "iVBORw0KGgoAAAANSUhEUgAAAvgAAADMCAYAAAAGVtdxAAEAAElEQVR4nOy9ebwkVXn//z5bVXX3XWZj2JEdRDZFgaBgFFBEgkYxApKoGI0iP4korl81ROOGQQ3BXVyiUdTEGMwiYtxQcRQMDIgg+w6z3qW7q+psvz9Odc8MDMhyjYbUm9d9cW/f7tOnlr7znOd8ns8jYozROUcIgZaWlpaWlpaWlpaW/51IKdFaI6y1sQ3uW1paWlpaWlpaWv73I6VEtsF9S0tLS0tLS0tLy6ODEALydz2JlpaWlpaWlpaWlpaFow3wW1paWlpaWlp... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA6IAAADMCAYAAABp7h4wAAEAAElEQVR4nOy9d9gtZ1nv/3nqlFXesmt2eoEAhi5ViGJAASOiRqkKBEWIHBAkUn4HNOI5oKFJRBAQkANKu+QgliPgERAQIgkn0sH0ZGfXt60y5Wm/P2a9b3rYwQAa1yfXe+1VZ56ZeWZl7rnv+/sVKaXkvSfGyJw5c+bMmTNnzpw5c/5zIqVEa40Q4gc9lDlzviNyHoTOmTNnzpw5c+bMmfOfnxgj3vsf9DDmzDki9DwInTNnzpw5c+bMmTPnzkGMkX9ZT5zag4H... | 0 |
math | grade-1 | which-picture-graph-is-correct | true | true | Fred was at a farm. He saw these foods. Which picture graph shows the right number of each food? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADhCAYAAADyOcJJAAB5VUlEQVR4nOzdd3xcd53v/9dpc84USaPqyLYsd8d27MROI5WEBDaFFiABboClLOxvF1i4sA247O6FZS/cC6GzSw8lbAiwSTYhCaQQUolTnMRx75asYrXR1NPP74+xRx5L7rIs2Z/n47GPh+ecM0ff71hh3/P153y+ShRFEUIIIYQQQohxoZ7sAQghhBBCCHEqkYAthBBCCCHEOJKALYQQQgghxDiSgC2EEEIIIcQ4koAthBBCCCHEOJKALYQQQgghxDiSgC2EEEIIIcQ... | null | [
"iVBORw0KGgoAAAANSUhEUgAABMwAAADwCAYAAAD8Q/imAADJ8UlEQVR4nOzdd3hc1Zn48e8tM3equmTLlizb4A4Gm2rAlFCWEhIgoWycENIgpGyy6YTNJr90No0s6ZsCbGCpAUJN6B2MwdjGFXfZktVH02///TH2jAfJuGCrmPfzPH6suffcO+e8luSZd855jwL4CCGEEEIIIfYL3/fZZsHaLKRccOTVthBCCDHi6QrENZgSgTFBUJCEmRBCCCGEEPvNNtNnYXK4eyGEEEKIfXVcBejD3QkhhBBCCCEOJm9mC383BmFatPBptRB... | 1 |
math | pre-k | cylinders | true | false | Which shape is a cylinder? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAYEUlEQVR4nO2dSXAb15nH/72jG01QBChxcRXpqpgaa5mDlhrZB8kXT02U5RCpKrkkuczBOWZydm7WNancRoecnKuXSspRpsaXUAcvpeUwIuWITpVIl7mIBCkAjQZ6fXN4fA2ABGk0NjaA96tSSQJJdBP966+/971NIISQTRf42gZKAeATcDiJQxaAMQlYMIApFRA2HUK+LJ70aXE4rXMtA8grNv3PjAr8S5pazeEkjVIA/KMMbLjAMxsQiz79ApeWk2TGJOooAFg... | 1 |
math | pre-k | count-on-ten-frames-up-to-10 | false | true | How many triangles are on the frame? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAACQCAYAAAAyRxwtAAAOAElEQVR4nO3dT2tUWRrA4ffWv1u9HWjmC/R2ZjOfoD/BfK4EArpo3WhvdGtgVtLkn6Rp0xgGDBFsbFRwkWShCUYs6YpVNQtn6B5NWyY5995KnefZJamce36chS+FdVKsH5xMAoD49q+dprcAwBxoNb0BAACYJwZsAABIyIANAAAJffIfDv/xl3YT+2jMvw9H//e1fv050T+a/iIAOCPvYAMAQEIGbAAASMiADQAACRmwAQAgIQM2AAAkZMAGAICEDNgAAJCQARsAABI... | [
"10",
"1",
"3",
"8"
] | null | 0 |
science | grade-6 | identify-earths-land-features-using-photographs | true | false | A canyon is a deep and narrow landform. A canyon has steep cliffs on both sides. Sometimes, a canyon has a river running through it. Select the canyon. | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOEAAAC0CAYAAABi8Es+AAEAAElEQVR4nHz9WbNtSX7Yh/0y17THMw93qntrruqq7gbQBEFCBEiIo8QwHZYfHHYo/Ognv/kD+MlP9gdwhB18sUIhK0K2wrJkBilYBEigG41Go7uru2uuuvNw5j3vvYbM9EOO+zbkXXHrnLP2Wjn85yn/S4j/wwsDIBBgwGA/wv3P/21/E8mX/yMfAYjX7hPmN6/5r9LLwk4j3bz+MYMhE4LcLUMDnbFfKiADCgGZINwjBEjsPwGUQtAThp4QjDLBIIOBhJ6EXAg... | 2 |
math | grade-6 | identify-polyhedra | false | true | Is this figure a polyhedron? | "iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAAIe0lEQVR4nO2ca2hU6R2Hn4kTuxrXVRM1i3SSoK7NZN1qUm13S63sJW3dSummH0pFNtuEQqFQAvmSFpe4NbQFg0JLKeSDtRcsxt3W0oV2KTXby4KbRic0qKhp1DUkJrFrxWjIjHP6wZzhn9vMOWfe95z3JPvAfMlczsk8/H6/nElIxLIsi48whoKgT0AF7e3ttLe3B30aSogGfQL50tvbS3NzMwCTk5O0tLQEfEZ5YoWYZDJpxeNxC8jcDh8+HPRp5UWohbS2tk6TYd+... | [
"no",
"yes"
] | null | 1 |
math | grade-6 | rotational-symmetry-amount-of-rotation | false | true | This image has rotational symmetry. What is the smallest fraction of a full turn you need to rotate the image for it to look the same? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAAlA0lEQVR4nO2deVxU9f7/X58zLMOi4r4nKAhqIiqCC4KWmbfya7fS1t/Num65V1ouiBSmqZVKopmmdfPaopZ1b3Ztx9RkUxAQZEAQFVdkEZiBmTmf3x8jpAYyZzifs+B5Ph79EZ7z+bxm5rzO5/3Z3h9AQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0ND466GyC1Aw0a/fv1cWrdu7QEAJSUllZmZmTVya9LQDMK... | [
"1\n4\n of a full turn",
"1\n5\n of a full turn",
"1\n3\n of a full turn",
"1\n7\n of a full turn"
] | null | 1 |
math | grade-5 | multiplication-input-output-tables-find-the-rule | false | true | What is the rule for this input/output table? | "iVBORw0KGgoAAAANSUhEUgAAAFgAAAB/CAYAAABrPAW6AAAKMElEQVR4nO2dbVBU1xmAn1WDGkVpVDBUcbeGUbNoQy3yoTCxQjSuNoPRVpRErTFjTcYwomBArIDMIIxxnKZjHQ1VCog1sSaiCFMhzGjVxsZRSIhpWCMIpgtGFDcIG7n9sdmlG8kE5Bx1nfP8ucu5u+/77sPZe8/uPXtWp6VN0nAHXjsMf5r7oKvoGSnn6fOga3jUUYIlowRLRgmWjBIsGSVYMkqwZJRgySjBklGCJdOvV4+elwkj/GHni4LKEYTH4/DsazBmMjzhB5Y... | [
"× 2",
"× 8",
"× 10",
"× 3"
] | null | 0 |
math | grade-6 | classify-rational-numbers-using-a-diagram | false | true | Use the diagram to help you answer the question below. Which of the following is a rational number but not an integer? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEuCAYAAAC08GWcAACGJklEQVR4nO3dd3hUZfbA8e/0mWTSGy1AQuiEIlURAWmKqCBgAUWXVdeCa1vXdV17+9nFtpa1ARYEFFBUikqT3nsNHdLbTKaX3x83GUCQImRazud58sxkMpl5Z5K599xzz3teld/v9yNEHVJg83G4ykupw0eV24/N48Pu8WNz+7F5/Mr16u8D12tud/tOcpsfi1v5GMVqVRi1KowaFUYtmALXj17+/jZT9W0JBjWJBhVJBjVJRjWJBjVJBuUyXq8K8bsmhBBCiDOlkgB... | [
"16",
"119",
"–36",
"1 3/8"
] | null | 3 |
math | grade-7 | front-side-and-top-view | true | true | If you look at this object from the front, what will you see? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAE2CAYAAABbdeVqAABKMklEQVR4nO3dfVzUdbo//tdwn3KnZkJizKCUa2swnPMNNHMYz2q0VtzIWYxKwNSK3d9hRttt6/vVYfKcdt2TzXDORmuwAtVB6SHNuGVp9ovRJcX6/WRM11wX5cNCQTe6I6DcyDDfP3A+SQhyM8PMwOv5T+sw857Lbc/jcfE+1+d6SWw2mw1EREREROQQXq4ugIiIiIhoImGDTURERETkQGywiYiIiIgciA02EREREZEDscGmSaesrAzTpk2DUqmE2Wx2dTlEREQ0wbD... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA3gAAAE2CAYAAAAzozB7AABReUlEQVR4nO3dfVSU993v+/fIk1GeNDFCxA74kFhTA8M+p6IxDpNWY2oTAbmrMQ+gUZvans1g0qbp2QrEe6e1Owa478bWSAWS3CpZErCJSazZYTTWYLqPjNFaazFcVhNoUtMRUUHBOX8g0xgVeRgYwM9rrSzCcM3v+hIna/lZv+/1+5rcbrcbERERERHxCpPJ5OsS5AY2yNcFiIiIiIiIiHco4ImIiIiIiAwQCngiIiIiIiIDhAKeiIiIiIjIAKGAJzec4uJihg0... | 0 |
math | pre-k | subtraction-sentences-up-to-5-which-model-matches | true | false |
Which picture shows 3 − 1 = 2? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAARIAAABKCAYAAAB3ndsNAAAMM0lEQVR4nO3d629b9R3H8bevSZ3EubW50aZtaBoaAiIpKpROgGg3mCiaphYE67SVSQykSWgC/gAeb9Ie8mDsAdqEQBs8GUhDkyZNG7RSoSHQtF2TtmnTJnGudhw78e347MGxHTtxYsfn2Cd2vy8pSmyfc/z7RF9/z/G52BZVVVVPBK4vw5ICMRUhhNiU3QJ1Nuh2QasTLJ6wql7wmz0sIUS5eswN9tFl7Ua7E3pqtC4jhBCbWVLgWhCmIjCyDFZ/THtAmogQIl9... | 2 |
math | algebra-1 | domain-and-range-of-exponential-functions-graphs | false | true | What is the range of this exponential function? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABjpUlEQVR4nO39a3RU553nff9KVaWzkISEJRCWMMbIASMMGNtgiHFwbLftOIF0BndPErtvZ9JJx51MZj393Fm5O5nu3F6erO6V7hVPks64OxMnM3lWOp5gJwYLggMGImIwMggkm4NlEBKgs1Sq867Dfl4IyYijCvalUqHv502pSrV/9dfeVbv+demqvV22bdsCAAAA4IisdBcAAAAA3EhosAEAAAAH0WADAAAADqLBBjBGVVWV9uzZM3r9xIkTmjFjhtra2tJYFQAAmYM... | [
"$\\{y \\mid y<-1\\}$",
"all real numbers",
"$\\{y \\mid y>-1\\}$",
"$\\{y \\mid y \\leq-1\\}$"
] | null | 2 |
science | grade-6 | identify-rocks-and-minerals | false | true | Calcarenite has the following properties:
solid
not made by living things
no fixed crystal structure
not a pure substance
found in nature Is calcarenite a mineral? | "iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAADG3klEQVR4nOz9Z5AkeZreif3cPbTWIiO1ViUyq7pkV1fL6d2ZnpnVArvg8QDizkAeQH4jaSSOxjPjHezujEYDgT0clwCWe1isABa7o3pmurumu6uqu3RlqRSVOjMyQ2vtER7u/OBZ1dU9PTWznJ3poV0+ZmkZGemhPP6Pv+//Fc8raJqmcYhDHOJzIX7Rb+AQh/hFxiFBDnGI5+CQIIc4xHNwSJBDHOI5OCTIIQ7xHBwS5BCHeA4OCXKIQzwHhwQ5xCGeg0OCHOIQz8E... | [
"no",
"yes"
] | null | 0 |
math | grade-7 | front-side-and-top-view | true | true | If you look at this object from the side, what will you see? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAFHCAYAAACbCzsOAABaZElEQVR4nO3dfVzUdbo//tcw3Ch3g/ei5VAnd0Ut0DTN0wHctNT2saK4Wj8TNHNXjyUQ7VnppDNkm+53F8HS7Cya3OxWuhKsuyHtUiCV98pYCq66MUpAihoz3MjdML8/hvmsICA3n898ZsbX85+NGWAuHno817y53tdLYTabzSAiIiIiIlG4yF0AEREREZEzYYNNRERERCQiNthERERERCJig01EREREJCI22NRv1dXVWLFiBRQKBRISElBdXS13SURERESyUXCLCPX... | null | [
"iVBORw0KGgoAAAANSUhEUgAAA8gAAAFHCAYAAAB9K2UmAABmfklEQVR4nO3de0DUBbo//vcwXJTb4F00namTragFGqZ5OoCbltp+VxRX62eCpu7qsWSI9hzppAPZBp1dBEuzs2hy2a10Rdh2Rdq1GGjzfpkKwVV3GUVARW1muMhtmN8fw8wqAnKZmc988P36p+Q2D0ft7Jvn+TyPxGQymUBERERERDYhkUiELoGIeslF6AKIiIiIiIiInAEDMhEREREREREYkImIiIiIiIgAMCATERERERERAWBAJhvQ6XRYsWIFJBIJEhISoNP... | 0 |
science | grade-3 | identify-properties-of-an-object | false | true | Which property matches this object? Select the better answer. | "iVBORw0KGgoAAAANSUhEUgAAAKwAAADQCAYAAACa0YpiAABU5klEQVR4nO29eZQl2V3f+fndG8vbc629qquq1bsa7QixGAlkSQbNwMiIYUBgc5CR7Zlzxgz4cGAA2aMxRsYjy8xgBjAG2UiaPuPBNhjQAYEQMhItqVsWaqnVUm/VWy1ZuWe+LZZ754974714L19WVXdXZXa23rdO1IuM9UbEN37xvb/7u78r1loL0Ov1uHDhApubm2RZxhRT7DeCIKDVanHs2DEqlQoAYq213W6XRx99lNOnT1OpVAjDcJ+LOsUUkKYpvV6Pc+fOceu... | [
"shiny",
"bouncy"
] | null | 0 |
math | grade-2 | read-a-calendar-ii | false | true | What date is 2 weeks before February 16? | "iVBORw0KGgoAAAANSUhEUgAAAssAAAF2CAYAAACYtNXtAABXAklEQVR4nO3de1iUdf7/8SfDQRQF5OxZFM/iicwDEuUhNTvsmrVp7rppxzW/tfazXFqt3TI3rXazdrPdak07aOaaqBWpBYqnVBQVj4iKiHhCUECOM78/iFGCWwcFhqHX47q8wLnvmXnPm3tmXvO5P/c9ThaLxcKhWEjeCBczEBEREZFq4BkEIeHQ8XZ7VyI3wcly8AcLF05Al+Hg5AwWi71rEhEREXFsTk5gKYF9MdC0JXS6w94VyQ0ykbyxNChjUlAWERERqQ4WC2C... | [
"February 14",
"February 2"
] | null | 1 |
math | grade-7 | identify-trapezoids | false | true | Is this polygon a trapezoid? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAADACAYAAAA+yRTaAAAZvElEQVR4nO3deXRU533G8WcGSUggBBLIYhNGCAQGA8Ysxo4N2E4TJ3HSxlnc2Ng5Weo9jXNat2mbNqc5TZe0SdN6d5OexAtxXCdx7Tiu4w3wApjFC/siEAItICRASEISo7n945K8M7IkZrn3vtLM9/OH+d3L5N7nHJuTh9G97xtyHMcRAAAAAE+EbQcAAAAAMgkFGwAAAPAQBRsAAADwEAUbAAAA8BAFGwAAAPAQBRsAAADwEAUbAAAA8BAFG0Pfb/9Vuv9T0rvP2E4... | [
"no",
"yes"
] | null | 0 |
science | grade-7 | compare-concentrations-of-solutions | false | true | The diagram below is a model of two solutions. Each purple ball represents one particle of solute. Which solution has a higher concentration of purple particles? | "iVBORw0KGgoAAAANSUhEUgAAAbAAAAEVCAYAAACBn7B3AABtqklEQVR4nO19eZgV1Zn+e+revt1Nd9MrWyPQzSrQrAqo4AIGRcUtOnESxwlmjBmfTCaJYzJmyC+TmDGbYzRmJiYmmRhnTDKjRkkCQQVRjDubKCBr0ywNDXSz9Hq3Or8/qs6pc+rW3e/tvlV93ueBrnvq1Fmqzlvf+33nVBWhlFIoKCgoKCi4DNpAN0BBQUFBQSETKAOmoKCgoOBKKAOmoKCgoOBKKAOmoKCgoOBKKAOmoKCgoOBKKAOmoKCgoOBKKAOmoKCgoOBKKAO... | [
"Solution B",
"Solution A",
"neither; their concentrations are the same"
] | null | 2 |
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 | [
"iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAXYklEQVR4nO3deXhU9b3H8fcsmWwkIUAIW9h3DJEqi6i4YC0quILXe7VVa2ulvdZ6rRUrqFWwWq3F3mrvtbXLbW2rINQFUKkiQtgsSyCBEBZDAiQhCSF7ZjIz5/4xYSCQwoQM50ySz+t5fEzOzPzOd57f8MmZ75zfHJthGEaxB/bWQbUPvAYiImHhtEGCA4bFQaoLbMVuw9hUZXVZItLRTUwE5566wC+9XTAiPpBGIiLhUO2D3bVQ5IG8OrBXeQM3KGxEJNwSHIF... | 1 |
math | algebra-1 | identify-functions-vertical-line-test | true | false | Which of these relations is a function? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAATIAAAE3CAYAAAApC812AAAbQElEQVR4nO3df2zU933H8df55/kHd5cAMSFxK1Yz36JQ7IYYI6/Ma9UI8yMJpA00ydJAgqYijcmqhcYwSSrsECFUJNoQVckoSUtDF8pIQCVKtgStQzZemK8lyY7MEmRMYNM4uTv/4Gyfffvj7DtsjMH23X3ve9/n45/6Y+PvfWqfX7kf3+/rbQuHw+H2fqmtV+oalEJhAUBKy7JJMzKl+flSUY5ka+8Lh1sCRm8LAKZmsUPK+p/eyOLOHKm0IJJyAJDKugalcz3... | 3 |
math | grade-3 | choose-the-appropriate-measuring-tool | true | false | Which tool would you use to find out the height of a volleyball net? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJYAAACnCAYAAADzJ6XqAAAbKUlEQVR4nO2deXRUVaKvv30qU01JyEgFSBgkIFMgjALiDDxFrsuhvTTNVbn30r5le3ku7dUu7bdWd6ut94naioqKgqAg4HsgwQEFQWxAwhwCZiBkJjOZqlIQkqr9/jhJkQIUUCpVFfa3FutQJ/vUOSd8/PY+++yzj5BSyqqzUOAEuwvaJQrFFRMiwGqAwSZIDANR1Srl3mZ/H5aiJzExEkKOO/UPtjAYYtatUyiuFLsL8lqg8izkO0Frbtd/oKRS/BqsBt0hAIc... | 0 |
math | grade-6 | mean-median-mode-and-range-find-the-missing-number | false | true | Dean has the following data: If the range is 8, which number could g be? | "iVBORw0KGgoAAAANSUhEUgAAALsAAAAkCAYAAADRoEv8AAAGxklEQVR4nO3de1BU5xnH8e9eXK4CIogwJOGi4goGRcWIUA1ORK0O0YxaGyXaxia0sa2mmUm0MTWmaTpNmWQ01iQmbYLXpJXijZg2QaWBKAaJQgBvgFC5iHLfXfZ2+ocJE9JMM9M974Lwfv7jYTi/92GfObzn7NlBoyiKAmB12jHZLDgUJwqSdGfTADqNFu9hnhi0+ts1RVGUbnsPZntP/65OkgTx1nvgrfdAb3XY5aBLg5rJ3oNeo0Nrdlj7ey2SJJzZYUVrdzr6ex2... | [
"8",
"14"
] | null | 0 |
math | pre-k | triangles | true | false | Which shape is a triangle? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAJAAAACVCAYAAAC3i3MLAAACZUlEQVR4nO3UMW5UVxiG4X/GYxdgoEuUhg7YQVhYthE2BisgpEoTp7WNJRxPboorJBoE1itrMsrzVPfq6Ehf8epslmVZLm5nfr+ZudrP3C0DX7XbzDw5mXnxaObHs5nNxadleXt56Fkco9dPZ3Yfbtafn85mXj1e64KvudrPvP848+ftzG83M9vLu/VAPHyPJydrKzMz1/uZ7f6LA/gen1v5e5nZHnYKx05AJAIiERCJgEgERCIgEgGRCIhEQCQCIhEQiYBIBEQ... | 2 |
math | grade-8 | apply-multiplication-and-division-rules | false | true | The number line shows an unknown number, q. Is 2q positive or negative? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAGq0lEQVR4nO3dX2xT1wHH8d81tZM6ZCFlyUokEJSyjSzjbzAJY8DLpI2IFUdUGi8sEhoSCIk9bGLtHtaHlA5N4mVBJRKaMiZFaNICGyKTpqnEQCXbwQRvEe60aXGJWCmQdbQJceIkdw+xDVHzh3bJPdfz9/N077n34SddP/x0fO65lm3btgAgj7S3t8uyLO3fv990FDiEZw4gnzxnOgAAfFb9/f2mI8BhPHMA+eSZC3Y6nVYsFlMkElFlZSWzCA5oS3Tq1+/9Ubce/F2... | [
"positive",
"negative"
] | null | 1 |
science | grade-5 | match-chemical-formulas-to-ball-and-stick-models | false | true | Select the chemical formula for this molecule. | "iVBORw0KGgoAAAANSUhEUgAAAV4AAAFCCAYAAAC5P7X6AABkcUlEQVR4nO39ebwkVX3/jz/Pqer17nNnYRYY9gFkX8UNEBAQ4hY31LgRE4PKJyrGJfl8/H3y+zyMRpG4xCRIjIhrUKMSxSAgOwgCIjszwzr7zJ27dd/eqs75/lFV3dX7crt77sw9T+i53dVVp05X1XnVu97nfd5HaK01BoPBYOgbck9XwGAwGBYbRngNBoOhzxjhNRgMhj5jhNdgMBj6jBFeg8Fg6DNGeA0Gg6HPGOE1GAyGPmOE12AwGPqMEV6DwWDoM0Z4DQaDoc8... | [
"BF2",
"BF3",
"BFe",
"B"
] | null | 1 |
math | pre-k | fewer-and-more-compare-by-counting | true | false | Which group has fewer? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAGfklEQVR4nO3dO25d1xmG4Z+6+RJL7hKkNpLMwCo9CY/A05GGI3XUBFxTheP0UTpBtA9hUdROcUSYWDDN29n7W2ev56lIsODCD7w8X8eDaZqmN++r/rOpOj6r+jAVMJMHB1WP71f948uqvz2qOnjz2zT9+C79LBjP0ydVD37ebL/5+6Oqf/1lWycwj+Ozqp9+rfrv+6p/b6ruvfuw/YH4YH6P729bq6r65azq3tmFHwDzO2/tdKq6l30KjE2AECRACBIgBAkQggQ... | 1 |
math | kindergarten | flat-and-solid-shapes | true | false | Which shape is flat? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAMwAAADMCAYAAAA/IkzyAAADE0lEQVR4nO3VPW5VVxiG0e9e/xRgJx0olauEITAkSxkQElNiBgQaKpzWBks4vjopTiyBUJCe6hhprWpv7eZtHu3dsizL1d3M+9uZm8PM/TLAf453M+dHM78/mXl+OrO7+rIsb663ngWP38tfZo7f3a6X305nXjxdawJWN4eZt59nPt7N/HU7s7++Xx/EAt87P1rbmJn5dJjZH756AL730MY/y8x+2ynwcxEMBIKBQDAQCAYCwUAgGAgEA4FgIBAMBIKBQDAQCAY... | 0 |
math | grade-5 | multiply-unit-fractions-by-whole-numbers-using-models | true | false | Which model represents the product 2×
1
5
? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAT4AAACOCAYAAACohWTxAAAF6ElEQVR4nO3cMW9TBxiF4eMESORAu4RUKFG7pO2cqlLCFG9k6S/wRNSpU0BCsOVmYwr8AmhnNneJN3uKw8JWROkAyFYpyRAlJLJTrNvBMuqALGx/N4l83keyACF9sXykV5Yi3VyapunbE+mvY+mwLX1IBQAj5UJOujIufZuXvrok5d620vTpwVm/LQA4HYtfSBdeHnf+ce2S9P1Up4oAMEoO29KLI+nvE+nPY2ns4EPnP4gegFF1ZbzTOEl635bG2v/7DwAYVd3... | 1 |
math | algebra-1 | identify-linear-and-exponential-functions-from-tables | false | true | Is this function linear or exponential? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAEqCAYAAAAvYSeKAAAfuUlEQVR4nO3daVSU993/8Q8wghvRWkUILiwmQjRUDG5Va12C+Sensca4IEpRXG5NosmxUmMTFxKpBq1gclxy4tZKNeKS1IQI2gZjYyE2ETVVjDlGI8YEqvVmERUY7gce5+7coED8XeE/+H6dwwOuueb3+86z91znmhm3sr94VskFNO3/ua593L2hx7grTYdcb+gRAAAAYDH3hh4AAAAAaEwIbAAAAMAgAhsAAAAwiMAGAAAADCKwAQAAAIMIbAAAAMAgAhsAAAAwiMA... | [
"linear",
"exponential"
] | null | 0 |
math | grade-1 | select-three-dimensional-shapes | true | false | Which shape is a cylinder? | null | null | [
"iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAW/0lEQVR4nO2deXRb1Z3HP0+bZdmyvG9x7JDNAYfYiUMCJEAStgItUGinTAstPeVAl4E5dKPQOaczf5Q2LVPOlJm2zIFu0BZKoSylTGlIQhrIAk7iLCROiBMTx1a827Jk7W/+kJ4sO4Z4eU9PT74fzkHxe/fd+7P81dVdv1eSZVl2B+F9H3giEJYRCNIOiwROMyxyQJkNJHdAlncP6R2WQDB5VueB5Zgv9kOFDWpzYqoWCNINTwRavNAZhKM+MA2FYzeEaAXpjNM... | 1 |
math | grade-3 | multiplication-input-output-tables-find-the-rule | false | true | What is the rule for this input/output table? | "iVBORw0KGgoAAAANSUhEUgAAAFgAAAB/CAYAAABrPAW6AAAKy0lEQVR4nO2df1ST1xnHvxHQSEGgMEDkRzJQ1oYTYeqgOHEoFhSs1U4ZG1NZLT3196pzlo62FDgFXFepHvTMHqgtaG3VuZ4DiXg8jlnnD1qdxRWPhx9KCkJw8jPGEMjdHzbpUrIVzH3EeO7nHP7Ifd/3eZ58uLx5k/fmQfJSTSSDA/CK8hDe+jJ1rMsYFSVxlzBurIt41BGCiRGCiRGCiRGCiRGCiRGCiRGCiRGCiRGCiXG25+DfPPEWAlzDkPfFcl71cGGCkysWy9Z... | [
"× 10",
"× 2",
"× 8",
"× 6"
] | null | 1 |
math | grade-4 | points-lines-line-segments-rays-and-angles | false | true | What is this? | "iVBORw0KGgoAAAANSUhEUgAAAtgAAAAyCAYAAABmk6zIAAACnElEQVR4nO3dMU7kSBSA4TeribmAO3FIX4BOSEmc+gROCOkALkBKQt+CwL6AOQAmJTAhSfcFfAE2WrTS9gQzU7XFoO+TOilL/Sr8Zdnlb+/v7+8BAAAk8VfpDQAAwFcisAEAICGBDQAACQlsAABISGADAEBCAhsAABIS2AAAkJDABgCAhAQ2AAAkVDyw+76PpmmiruuPX9M0MQxD6a0BAMBP+1bqU+nLssTNzU08PT1F13Wx2WxivV7HPM/R932M4xgvLy8ltgYAAL+... | [
"a line segment",
"a line",
"a point",
"an angle"
] | null | 2 |
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