Datasets:
stemdataset
/
STEM

Dataset card Data Studio Files
xet
 Community
1
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-3
parallel-perpendicular-and-intersecting-lines
false
true
Are these lines intersecting?
"iVBORw0KGgoAAAANSUhEUgAAAGoAAABqCAYAAABUIcSXAAAKI0lEQVR4nO2df1CT5x3AP2iwGoMo+AO0FU5h2BYLKgqoMSGts1Ydmuvardtu2l3r7ma7tro7ux9Xe7v27F272V17u7o/am9bZ6tgrLX+THgBRUBUViOCtD2gWkAFo0kzioHsj8grVBBQyPs+efnccRfyhLxf7nPPN8+P7/skzO/3+xlC9QxTOoAh+oYqRbndLqVDUB2qE+V2u1j7XNaQrO+hOlFV1eWcqy7nz5ufUToUVaE6Uf9r8QLgkHby5pYXlA1GRahO1KiRevn...
[ "yes", "no" ]
null
0
math
kindergarten
fewer-and-more-compare-in-a-mixed-group
false
true
Are there fewer squares or triangles?
"iVBORw0KGgoAAAANSUhEUgAAAXoAAAA2CAYAAADJTVIzAAAFaUlEQVR4nO3dv28TdxzG8cc48Q9UQpKhqlCVplJS0SFRJ5giw0YRYihSp4iJDeUvgKqq1G78BzAydezQf6Bbp4olUJDAhBISDHZEEvtytq/DxeeAHMc/7r736/2SkCIlOn/OEc+d7558L+M4jiMAQGKdCnsAAECwCHoASDiCHgASjqAHgIQj6AEg4Qh6AEg4gh4AEo6gB4CEmwh7gDA9+m1dO+sfwh7Dc/bbM1q+8+3Y22G/zGC/0imOv69Un9FH6Zcl+TcP+2UG+5V...
[ " triangles", " squares" ]
null
0
math
grade-2
identify-the-fraction
false
true
What fraction of the shape is pink?
"iVBORw0KGgoAAAANSUhEUgAAAQQAAABkCAYAAABgi07kAAACB0lEQVR4nO3dsW0bQRRF0TcEG5CaUAUKmTBRpiLYhGtwEyqC2SZMGKoCN6EWxhEfDDcwC/CcbKP/gcXeATaZMeecAUhyTJLv39/5+fOzdpOZZDzv/Ne317z/el+3ACQ5JFkfg2RtDHYwfxfvgKd3/Pfh4+tjyRLbZdvF/NPnecn8+/W2ZC7877B6AWA/BAEoQQBKEIASBKAEAShBAEoQgBIEoAQBKEEAShCAEgSgBAEoQQBKEIASBKAEAShBAEoQgBIEoAQBKEEAShC...
[ "2/9", "5/9", "4/9", "5/10" ]
null
1
science
grade-4
compare-properties-of-materials
true
false
Which is the most flexible?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AAAy/UlEQVR4nO29d3Rc13W3/dzpDb0QjWAH2IvAXkWq2JRFFbe8tnqsOG7R6+VYrsuW7URx3jix9UWWFSeSJSWKFVrNKpYVqrFTFHvvBYVogzbADKbf8/2xMQBIgiQ6B9R91poFzGBw75l7f7PP2eWco+3wKVXqhhQzBgbDSlscjgWgJgIZFliaLq+bDEEaXC1SzFDqlt/98a7XTYYgDa4mCf1FVddrpqvTFAODS2OI0iDpMERpkHQYojRIOgxRGiQdhigNkg5DlAZ...
0
math
grade-1
compare-clocks
false
true
The clocks show two things Dale did Sunday morning: Which did Dale do first?
"iVBORw0KGgoAAAANSUhEUgAAAiIAAACZCAYAAAASJlG1AAAkOElEQVR4nO3deVxU9f4/8NcMAwMDyI6AyuJSLuSG8kOvpriviZZ7XvV6Ta+3VdHqZi5ptyz9pveW2nK9eEvrm2malQulpv5MTY0U9aYiaCgKKIsswzJ8vn8QBwZmgBlm5sDwej4ePB7nfM7nnPOecd7H99kVQggBapTE5kXAD19YbHm/3XdBYbHKIstydHVG6GeHoHRrYZHlETUVzEsiy1LKHQAZkfGbRTd2llaSr0XOF3Fyh0FkW8xLIotjIdJYZaTKHUGdtP9NlDs...
[ "fed the cat", "got dressed" ]
null
1
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/t0lAAAgmUlEQVR4nO3dcZCU9X0/8M8BkeNQ2aAQDkzcGzXAUYejhxR0Rg7TaQV7EZyhJrGTnFZrtG2iMSa2f8Qz0ZQ0aSVRMdqMYJImTrGKtYNknMJR6wDGK8cYkKQ2t6hwJ9q4CJwXAuzvj9RL+cERYJ/b53bv9Zpxhn2+d/t9X8jMvvneZ5+tKhQKhQAAABIxLO0AAABQSRRsAABIkIINAAAJUrABACBBCjYAACRIwQYAgAQp2AAAkKCSFeze3t7o7e0t1XYAAJCKkhXsjo6...
[ "no trend", "positive trend", "negative trend" ]
null
0
engineer
grade-7
identify-laboratory-tools
true
false
Select the round-bottom flask.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AAAGp0lEQVR4nO3Zy6tdZxnH8fdd+3auaVKrvUkFwYo40omK4AUER6FUm0NTUeofoCOHYvEvcOLATpVCSmkHKghCQYQW24lOFCFatFebxpxzmuSke++11+vEuaQ5Ocee3+cz2qOH52HtL2uwSgEAAAAAAAAAAACAD5R63Atw+z311K/PjEaLB1pXP9PV4cFhqHd3tZxppW3UUjZbLZPWaq2tLUst+620f5fa/twN05drnf9hZ2fnxnHfwK0R+gn05JNPTk6duetbk9H...
3
math
grade-5
three-dimensional-figures-viewed-from-different-perspectives
true
true
If you look at this object from the front, what will you see?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAElCAYAAADeN5VfAABD9ElEQVR4nO3df1zUdbo3/tcADiTIEKmgYMOvftnqMLiPzNUc0Ey3k4JCZxekAEu3R3YLw96ttd+jQHbuzXO3MlR6b+EP2FXRDXRaq401ZVQ66dldGaO0EmFM1NksGnBUQIb5/oHzCURwgM8wP3g9/ymH4TMXbY/25dvrfV0Sq9VqBRERERERicLL2QUQEREREXkSBmwiIiIiIhExYBMRERERiYgBm4iIiIhIRAzYNOKUlpbizjvvREJCAvR6vbPLISIiIg/DgE0jhl6...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA6AAAAElCAYAAAD6J4/zAABLDUlEQVR4nO3dfVjUBb7//9cAAgkyxGpS0g43dmfHAP1da51cAa10b1QUOrsQLWCru1f2k5v9ttb+VoHsfDfP6QhU+t3SFPao2IbKbrXfOJWMxl6reyNjttom6rh5w2bZiKiADPP7g5iVEORmYGB4Pq5rL4ubz7zprHt89X7P+21wOBwOAQAAAHAJg8Hg7hKAIcvL3QUAAAAAAEYGAigAAAAAYFAQQAEAAAAAg4IACgAAAAAYFARQjDilpaW68cYblZCQIIvF4u5...
0
math
kindergarten
hexagons
true
false
Which shape is a hexagon?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAACiElEQVR4nO3VO24cVxBA0Zrhx4As2RkNBwolL0Er4Sq1E+1AljMFphySEgHSHLSDhgDnbNwxxudE/fCAQgUX/XbLsiw3jzN/3M/cHWaeloFnO9/NvDqbefNi5pfLmd3Nw7J8uD32Wpyydz/NnH+6Xw+/Xs789uNaITzX3WHm47eZPx9nfr+f2d8+rRciY0uvztamZma+Hmb2h39dwJa+N/X3MrM/7ir8XwiNhNBICI2E0EgIjYTQSAiNhNBICI2E0EgIjYTQSAi...
1
math
grade-7
which-is-the-better-coupon
true
false
Which coupon will save Noah more money on a beach towel originally priced at $10.10?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAU4AAACRCAYAAACsTFEnAAAv+UlEQVR4nO2dd3ib5bn/v6/2sC15yEO2Y3kmsZM4wzZZkARCWAnQAgFOW0ah51CgLaNAT2kJ68f5ldFDgR4OPW1DaQttgFNCRoFsQpzEcYaT2I7jJe8hW56SJb0a5483li1rWHr1ypKc53NduZI8evXo0frqGff9vSmHw+HotgANRmDEBlgdIBAIBMIkBBQQywfyZUCKCKC6zQ5HxXC4h0UgEAjRwRVxgKDeyPwnTQTMlTOqSiAQCIQJRmxAnQHosgAXjQBv2Mr...
1
math
kindergarten
represent-numbers-with-shapes-up-to-5
true
false
Which group has 5 triangles?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAARwAAAEcCAYAAAAV9AvgAAAJ40lEQVR4nO3du29UBxbA4WPAFHkp1a62Sbe7UaSkTRcpVf48oqDQOA2mgdYVCJALUwxBcmVZysZIFJY2Fo0J8WM8ry0mJA62mfHce8997PdV+IXuQZ7fGN+55y5NJpPJLycRO4cRr0cRw0kAlOLaUsSHVyP++V7E369HLP3Sn0x+/LXuwwK67suPIq79fDh94x/XI/79/rRGAGV4PYr46SDivycR/zmMuPLrcPoBsQHK9uHVaVsiIn4bRVwZnfoAQNnetGUwibh...
0
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
[ "iVBORw0KGgoAAAANSUhEUgAAARwAAAC4CAYAAAAxDlOsAAAWc0lEQVR4nO3dd3QU94EH8O/Mdq0aqkhCBRCiGIxtHNsUA44xdnBwHDsJybtzHOLkSvL88u6l3jntJU5xuct7d4G8dMfl7HAxxBQTCNhUgYWpsilCQmVXZdWQtNrVtpm5P0YFVRZ2d2ZX+n7e4/FYaVc/MbPfnd935rcrKIqitASAai/gloCQAiKiqDAKQIoBmJME5JoBocWvKBU9eg+LiCa7u1MB42Wv+o88MzDXrqYREVE0uCXgkgdoDgBVXkDsCalfYNgQUbS...
2
math
kindergarten
times-of-everyday-events
true
false
Liz is making breakfast. What time is it? Choose the more likely time.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAeBklEQVR4nO2deXyTVb7/31mahiZp07K0laUFGkEFWqpCHaSgIyh0vOq4oHNdKsyMoxQEnTvKiFe8V8D5zYzDIuPIpR3qCmUAHW1HcEbbMkhF6cKihbQQEEja0hKapE3TJM/vj5jQNG1pli5C368Xr/IsZ8nzec55zvI93yMSBEEw2KCqCUwOsAsMcBkhFYFKApoIiJWByNAiCPsb+zpbA/QGUyNBqm1yHcTLYJzC9TYMcPlgcsBRC+htcKwJxI1214UBsS9PVBK...
0
math
grade-1
find-the-next-shape-in-a-growing-pattern
true
true
What shape comes next?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAADhCAYAAAC9ZMGZAAAZ+0lEQVR4nO3dXXAdZ33H8d/uedHRkSw5xjiJncAwoROY0kIYXtoGSGca0tJ2moGLDg0zvSjtXXJFxpmhCSEmXJAw7TSB0sTYmQQSaGAIDtM6OLQhIRkbx0YOxtgymDqyZRwplhVLOtLZPbvbCyFbsvVyztG+PPuc72cmF7G1u///8+x6fmf1nF0niqJIAAAAAKzgZl0AAAAAgPgQ8AEAAACLEPABAAAAixDwAQAAAIsQ8AEAAACLEPABAAAAixDwAQAAAIsQ8AEAAAC...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAz4AAADhCAYAAAAJS2C/AAAfBklEQVR4nO3db5Ac9Z3f8U/3zPT82dXssl4LIYFcV/hKcsWJDXXmkshnUgkmd0kqlP0g5eOq/MAkz+CRXaLqDo4/xg8MrqQCvjiAJQrbYIKvDsRVIk44xnCipBMSK06WpZVPF7HSrsWutFppd2d3uqe782AR2pX2z/zp//N+VemBdnd+/f3+ft1T85nu6TF83/cFAAAAIBMMw4i7hEQy4y4AAAAAAMJG8AEAAACQeQQfAAAAAJlH8AEAAACQeQQfAAAAAJlH8AE...
1
math
kindergarten
triangles
true
false
Which shape is a triangle?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACJCAYAAADUvSEiAAAGoElEQVR4nO2dTU8bVxSGj/lSmyat1EWrVuqyqdQ/kE1/SH9jBAKJLGABShYEiMGJAqqVBiSiItll4bE9YxgzM54uhqQE7Nhj34/z9UiRYozxDTwQc+c9963keZ43rwFOLgHCDCDNQVFmZqEC8Gge4NcHAD8uAVSa/Tx/1fW9LIUzT74FWHh/Wdz4aQngt28KCxVlVsIM4F0PoHEN8PclwFw3Le5QyRSTPJovnAIAiDKAuezWHYpiko9OJTnAnN+lKFJQ0RQnqGi...
0
math
grade-8
multiply-polynomials-using-algebra-tiles
false
true
Which multiplication expression does this area model represent?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADoCAYAAADVNpOBAAAUo0lEQVR4nO3dXWyV930H8N85xw6OHRyTxIkxNCSQ5oUmUcGja5ZmL+3ooI0qTdGmrKo05a5Sl66ackW3XUbrpEmdpmhtpVxs7ar0hU6buobGylhh2UhaTEmAlCQ4wSnG2CTGBhv8cs6zi6wME2DB/J3nPD6fz915EOf58r3xlz/POZSyLMsCAABIopx3AAAAWEwMbAAASKjpQhf7BqZjaLz2fmcpvK72cqy/+aoL/ppO50en6V2y05HeODrZn/yey1tXx/rOjcnfFwD...
[ "(3x+1)(3x+2)", "(2x+1)(2x+2)", "(3x+1)(2x+2)", "(2x+1)(3x+2)" ]
null
2
math
grade-1
compare-clocks
false
true
The clocks show three things Patty did Saturday morning: Which did Patty do first?
"iVBORw0KGgoAAAANSUhEUgAAArIAAACiCAYAAAC9MC4yAABF6UlEQVR4nO3deVyU5f7/8dcMM8O+qCBgKqhgpojglpX7bmlqZVbnmJpanY56sKz0pGVHKzvVVz1Wp8UK67SalVm5lbnwK81SRM0SVCQVEEyGRWC2+/cHMTECwuAwC3yejwePh9xzzX1/Zpw393XPfd3XrVIURUF4LmMZlrwMLPknseQdRzl/EktRHpQVopSXoJSXQGkBqNTgG4LK2x+Vtx/4BKMOCkcV2gF1q46owzqgbtUBtD6ufkVCeD7JpRDuR3LZJKmkI+thjKW...
[ "got dressed", "fed the cat", "made the bed" ]
null
1
math
grade-1
names-and-values-of-all-coins
false
true
Which coin is this?
"iVBORw0KGgoAAAANSUhEUgAAAKsAAACrCAYAAAAZ6GwZAABiJUlEQVR4nO19XUhbabf/b8rBCMEYEwQ/YnDCKKGOMR1QhLSgGEo6rRehpTpvy7RwpvJKKWUYpjTQi14UIh2GQYYi2DlQh/aMliletD31XyIWbKAonMb4pgR9iTkxfoAYt5GA8UL/F5m1fPbOjtqv6cfMglI1yc7ez157PWv91m+t9cnW1hb+lpeXzc3NrX379n1CPwOAJEnQ6/WQJInfl0ql+GetVgu9Xg/63N/ycvIf7/oEPgTZ3NzcIgVMJBJYWFjA2toaCgoKtgB...
[ "nickel", "penny", "dime", "dollar coin" ]
null
0
math
grade-2
which-picture-shows-more-up-to-5-dollars
true
false
Which is more?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAoUAAAClCAYAAAAqGofLAABuAklEQVR4nO3dd5hdV3no/+8+Z59e5kzvVaMZjXrvxZJlGzeMDS4U03MDhBhIbhJuSCBwb0K4JIRQEn6QS3EAY4yNuy3Zsi2ra9RnRpqRpvdyypxedvv9cTQHC1Nk8EiWtD7P40eSp+13n7XOvHuVd0mGYRjjGehOQFQD1UAQBEEQBEG4yskSeMww1wmlVpDG04ZxOHK5L0sQBEEQBEG4XNZ4QT6XyP6j3ArNrmzGKAiCIAiCIFzdohp0xWEsA2cTYIqo2Q+IhFA...
0
math
grade-1
subtraction-sentences-using-number-lines-up-to-20
false
true
Which subtraction sentence does this model show?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABhCAYAAADsidaRAAAWTUlEQVR4nO3de1BU590H8O9ykyKwoIJKSlihBYNB8BIBbYqX0dyjNpFqJhOxNSamfW004xgTO9GEVlNz0QmdTGxmam2Ko2LBmNbR9zWyOOEqglYZTaMuSBYMC4K7XISVff84noUFFBYOnHN2v5+Znd09u7P5PdnF57vPPud5NDabzQYioiGqsgDL/w8o+AEoWQrMDJG7osFxlXYQEZF8POQugIjU74gBSMgSwqmauUo7iIhIXgzYRDQkt9qB5/4X2DAV2JkkdzWD5yr...
[ "6–3=3", "6–5=1", "6–2=4", "10–2=8" ]
null
2
engineer
grade-8
laboratory-safety-equipment
true
false
Select the fire extinguisher.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AAAja0lEQVR4nO3de3gcZ30v8O9vZnellSVblmznQi52osaSd3fkZCGJkhScBsIlhQCpHnKhEM5pSMPD6dOnUCgUKIWWUiiHkvO0XMoJkCcFDj5QLoWUBqhIgRQOItZeYhMc4oCDjZF1W0nWXub9nT+0sxmNpdVtd9+Z3d/nefxo3tFI+u56fzuzM++8LyCEEEIIIYQQQgghhBBCCCGEEEIIIUQLId0BRP0kk8mOycnJF9m2/QoiuqxUKnUAaCt/Ox8KhWaZORsOhw9...
2
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. Wind turned the blades of a windmill that was used to grind wheat into flour. A torch burned natu...
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAp8AAADOCAYAAAB4pWlzAAEAAElEQVR4nOz9WaxtWXaeB35jzrnWbk57+xvtjYiMzMjMiGxIZUMy2Yhqq0hKIlCSKBQFFu1CyVWS+VAQpRcJehD0YsAPghoIJUiWLcgwYJSKJUMuCC4bYqFEudi5JJs9mZnMyIyMuP3pdrPWmnOMephz7ebcc++NLpkqe/2JnfvsvVcz99r7xvnPP8b/D/nFY7PXdmDPM2DAgAEDBgwYMGDAtwSnCX5zBnISzQbiOWDAgAEDBgwYMOBbjdMEYmb27V7IgAEDBgw...
2
math
grade-2
am-or-pm
false
true
Farmer Carson is getting up to go milk his cows. It is just before sunrise. His watch shows: What time is it?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABaCAYAAACCNCH/AAAISUlEQVR4nO3dT2ib5x0H8J/zdw4h0uhfBotgg3UnqesIOZS4MFKbsbmntoPOMjtEgoEDgzreoRtjNIFRp6flZPcUmR3awFZ7F6e71INB6WVWoe1Wyuatg4b+k9q0SZo22iGp58WNLcmv9Ur253OSJT16v7ynL4+f93n6Go1GIwAAgETsSDsAAABsJQo2AAAkSMEGAIAEKdgAAJAgBRsAABKkYAMAQIIUbAAASNCuZr/4yZufxod/vRSNz2ybzZfbsbcvDnxnX/Tndqc...
[ "4:45 A.M.", "4:45 P.M." ]
null
0
math
grade-2
which-tally-chart-is-correct
true
true
Mark and his family were at the beach. They went to the snack bar and saw these snacks. Which tally chart shows the right number of each snack?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADhCAYAAADyOcJJAABEmUlEQVR4nO3deXwb9Z0//tdodFq2ZdnyGSfBTshp0iQkhKUhtEnLEkoJoZSEYzl2Q7ssbaHdL/DoseXXPnrtttulXeix25YtRwsUCmy4Nj3IAeFIIAk5nTixE5+xfEiydc1oZn5/yNbtW7Yl+fX8y6ORRp+PksBLH7/n8xY0TdNARERERERpoZvuARARERER5RIGbCIiIiKiNGLAJiIiIiJKIwZsIiIiIqI0YsAmIiIiIkojBmwiIiIiojRiwCYiIiIiSiMGbCIiIiK...
null
[ "iVBORw0KGgoAAAANSUhEUgAABDQAAADrCAYAAACWycaTAACRO0lEQVR4nOzdeXxU5dXA8d+dNZPJZLIn7CTsEBGQxbqggvuG2gqofd2KttZu9lVatdUuVq21fW3r0sVq1VrFahVxK2oVFERAQVnDkn0jeybJ7Pfe948hk0wy2ROycL6fjx9y9+cZYsicOec8CqAjhBBCCCGE6Be6rlPuh0NuaFAhKL9tCyFEvzAp4DDClFhIt4CCBDSEEEIIIYToN+U+na2uwR6FEEKMbIviwTTYgxBCCCGEEGIkOegO/TnKAtPsoU8ThRBC9F2...
0
math
grade-5
range-find-the-missing-number
false
true
Sandra has the following data: If the range is 23, which number could z be?
"iVBORw0KGgoAAAANSUhEUgAAATMAAAAkCAYAAADl/N3JAAAICUlEQVR4nO3da1BU5xnA8f9eYMWwwAK6iCKI3KxIvBCNM15iI8ZonaYxGptRGzuaaTNtYkbrxNra1KSZpJlmJmYmiXWs0dpcTIxWJ6mWGlO8hHgXBC9QAUEEud/Z6+mHRQIVBMmeXdg+v0/sy9k9z3nPw3Pe91wWjaIoCoDdCa1WcCqgIIQQ/ZcG0GpgkD/otW1tiqIorTaw2L0amxBC9IlBD4P8QGt3SiETQgxcFrtrZqm12LwdihBCfDcWG2gdTm+HIYQQ343DCVo...
[ "12", "41" ]
null
1
math
grade-3
compare-area-and-perimeter-of-two-figures
true
false
Which figure has a greater perimeter?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAHMAAABcCAYAAABduYoFAAAG90lEQVR4nO2dX0xUVx7HPwNIZiiFnaay0BjaabOU7m7CTmxsgkvhPkzcRYEdlRZYVzMPZpGoyxhpUtPdjTEhITEt44tv9j4yJkXSmmii0XFifDCuuaIRaU2dxOhqdtGrA2jHIXcfRqbQpcoMc+f+4XwSApN7b85v8sk53znn3jM4NE3T7iXg5jTEZyCpIbAIRQ54tRB+VQK/LAbHvR807eJjo8sSLJUPyqDou+nUi6piePeVlGmBNYjPwPgU/DsB305DweNk6oA...
1
math
grade-8
apply-addition-and-subtraction-rules
false
true
The number line shows an unknown number, a. Is 1+a positive or negative?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAApCAYAAAAPgl6QAAAGWklEQVR4nO3dT2yT9x3H8c/jP09M4mzxulCkLVnQ1G2KSNNAMAlDg2qTdqCoCkKTkCaEtBUJxMZhm7h0pyI0DkM7wAGJXZiUZUwKrThM2mkm+2M7GOQ2Sg7TFJOMUgHZoLXnf7GfHRJ7mKSkE7Z/Nn6/Ts8fHz7S8xw++ur3/Gw5juMIaGLj4+OyLEuHDx82HQV1wjMHADQyj+kAwPNaXFw0HQF1xjMHADSyz1yw8/m8YrGYIpGINm/ezOQIAFA/y4+U//tP5aTvqPj...
[ "positive", "negative" ]
null
0
science
grade-7
compare-thermal-energy-transfers
false
true
The table shows the same data about how the temperature of each phone battery changed over 5minutes.
"iVBORw0KGgoAAAANSUhEUgAAAvgAAABfCAYAAACdpLOcAAApvklEQVR4nO3deVzU1f4/8NesjAsugDvZABcBCUdFUEzFC3ZTs1KsFMGtUG+aQuUahomIWHbTm4hXQTOXxP0h6e+rlkuuaZJi6HUBRIVMUZBtmI3z+4PLyDAMfGaBAXw/H495POp8zuec9zlzzofjZ858hif/WcxACCEvGMmrf6Ds7CvWDoOQJo3mESHcSAIUDVofv0FrI4QQQgghhNQrWuATQgghhBDSjNACnxBCCCGEkGaEFviEEEIIIYQ0I7TAJ4QQQgghpBmhBT4...
[ "Thermal energy was transferred more quickly out of the battery in the more expensive phone.", "Thermal energy was transferred out of both batteries at the same rate.", "Thermal energy was transferred more quickly out of the battery in the less expensive phone." ]
null
2
math
pre-k
count-scattered-shapes-up-to-10
false
true
How many shapes are there?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAGbCAYAAACxquSKAAA/10lEQVR4nO3d7W9U9733+8/ceTwzxjcY32AT48GGkgKBBEqudreRkk2kq42O9tZpr0rVVtQqyh9wPbzOOU83Und7lD5on0SKolTRViKyadqcwC4bQnoBaoqLs4E0sIPjhFKwTWw89tgzvhnPzHngONwa2zNrrd+6eb8etsnMN8v2/D7zW9/fd4XK5XJZAAAAAHwhbLoAAAAAANYh4AMAAAA+QsAHAAAAfISADwAAAPgIAR8AAADwEQI+AAAA4CMEfAAAAMBHCPgAAAC...
[ "4", "6", "10", "2" ]
null
2
math
pre-k
addition-sentences-up-to-10-what-does-the-model-show
false
true
Which addition sentence does the picture show?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABUCAYAAAC4PkCPAAAPeklEQVR4nO3dW2wc12HG8W9m9r5ciRZJRSRFU7YVKRZsC6lUGDJqqUAR+SEybDQGnKcgDVqneYtfChhom6Qt6pcW7UuMFi16AQy0fXCAIkGDBEhS1Jbch9iOK7u1JVmWdaEu5upCcm+zM3P6sKJEydRlxZkze/n/AAHSanfO+fQgfntm5oxjjDECAAAAEAs37QkAAAAAg4SCDQAAAMSIgg0AAADEiIINAAAAxIiCDQAAAMSIgg0AAADEiIINAAAAxIiCDQAAAMSIgg0...
[ "2+3=5", "4+1=5" ]
null
1
math
grade-8
similar-and-congruent-figures
false
true
Are these shapes similar?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADECAYAAAClWFbMAABHZUlEQVR4nO3dd1xV9R/H8ddlyxQFQi0V3KiUpaCIM7c4EMNVBqihZIplmeUvJS03jtxBmnvgSk0tzQ2OFATFgYJbBFNBQPb9/XEVI2d24TA+z8fDB3jvuee+j4+C9/ne7/kelVqtViOEEEIIIYTQCh2lAwghhBBCCFGSSMEWQgghhBBCi6RgCyGEEEIIoUVSsIUQQmjVunXr0NPTQ09PDx0dHXR0dPL+PmPGDKXjCSFEgVPJRY5CCCEKSs+ePXF1dcXf31/pKEIIUWh...
[ "yes", "no" ]
null
0
math
pre-k
count-sides-and-corners
true
false
Which shape has 4 corners?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAACiklEQVR4nO3VvW4UZxSA4bPrtQt+ki5RKqokNRWXxbVwWzSpCWlS4bQ2toTjZShGSKmX1bvK8jzVjD4dzSlezbdZlmW5fpj5637mdj/zuAx8s91m5vnFzK9PZn6+mtlcf1qWtzenXotz9uqHmd37+/Xll6uZ35+uFcK3ut3PvLub+fAw8+f9zPbmcT0QGcf0/GJtambm435mu//PARzT16b+XWa2p12F74XQSAiNhNBICI2E0EgIjYTQSAiNhNBICI2E0EgIjYT...
0
math
algebra-1
identify-functions-vertical-line-test
true
false
Which of these relations is a function?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAATIAAAE3CAYAAAApC812AAAdEUlEQVR4nO3dbVBb14EG4PcKCUkIFNXExiUtKWmKWTYz4DHdwHRid+NsCk6xa7p2YsdtnThkpuMZhha2s7M/Op1N08lMoeMlpl2alDhOXNvZhHqMUztpNm6aHyIdPBYTl8Xs7sjGUwL2EssSQgJ93P1x4MrE36Cr+6H3+dMcPq5OkfLm3qtX50iyLMvjs8D/TAOhBBCXQUSka1YJKMgBvpIHFOUC0viMLP85qPW0iIgW50E3YP3vaTH4fC6wyiVSjohIz0IJ4Gw...
2
math
calculus
determine-continuity-on-an-interval-using-graphs
false
true
Is the function f(x) continuous on the open interval ( – 2,2)?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB2sElEQVR4nO3de3xU9Z0//teZ+2Rymck9BBJAEA0mKIgKgmKh3rBuwXZR11q7rq3dWnuv1u1219Z6aatdrbptd/v10rrr1l+9VDBQlGuDgkQIJCBgCLlPkklmJnM958yc8/sjJiVcJIHzYTLJ6/l48MdM5rzmzTkzZ97zmc85R9J1XQcRERERERnClOoCiIiIiIjGEzbYREREREQGYoNNRERERGQgNthENMyGDRswdepULF++HADwmc98Bq+99toJH6uqKi677DK8995...
[ "no", "yes" ]
null
1
math
pre-k
circles-squares-triangles-and-rectangles
true
false
Which shape is a square?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACbCAYAAACao4KyAAACdElEQVR4nO3Uu2qUURSA0T2TZAqvneIDqOAL2Pnwlj6A4KU3tkkMGDP8Fj+CvcM3MK5VncOBzS4+zmZZluXybubr7cz1fuZ+Gfhn55uZx2czLx/MPN/NbC5/LsuHq2OvxSl7+2Tm/Mvtenmxm3n9cK0Q/tX1fubTj5lvdzOfb2e2V/frg8g4pMdna1MzMzf7me3+rwc4pD9N/Vpmtsddhf+F0EgIjYTQSAiNhNBICI2E0EgIjYTQSAiNhNBICI2E0EicH3LY3cd...
0
science
grade-3
predict-heat-flow
true
false
Two solid blocks are heated to the temperatures shown. The blocks are placed so they touch. Which diagram shows the direction heat will flow?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAARwAAADWCAYAAAAD8D2GAAAY+UlEQVR4nO3deYxcd2EH8O875j52d3bG3jOOHSd2bJq7iZ1AEhITUiCBgEhbBFQUqoqKFAkqNZRStVAk2lKJthxVyyFxtSShScmhEpIQ4gDOwZFADt/X7s6ecx9v5h2//vFmZ73ecTzrnX3zZub7kRJpd2dmf+sdf/173/fe7ycJIcR0FThUAvImYAgQEbWEKgERBbgwCGz0AtJ0RYhnc+0eFhF1u2uigHqwZH8w7AW2hew0IiJqhbwJ7C8CySpwoATIOcP+AsO...
0
science
grade-3
predict-temperature-changes
true
true
Two identical blocks are heated to different temperatures. The blocks are placed so that they touch each other. Heat can flow from one block to another but cannot escape from the blocks. Later, the temperature of each block is measured again. Which pair of temperatures is possible?
"iVBORw0KGgoAAAANSUhEUgAAAQQAAACgCAYAAADq8hJGAAAWvklEQVR4nO3dd3gc9Z3H8fds0+5Kli25yE2WAxh3TLPBdIPpJZRALoSQ55JwSY4jXJ5Ljjyp3F24S4DkAmmXCwm5QBJKgnEMmGJjBxfAxrgK926r2FbX9t2Z++O7O7Is2V5ZZXal7+t59Iw1uzv7W/9Gn5n5zm92DMuyLJRSCnA53QClVO7QQFBK2TQQlFI2DQSllE0DQSll00BQStk0EJRSNg0EpZRNA0EpZdNAUErZNBCUUjYNBKWUTQNBKWXTQFBK2TxON6BHxEJ...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAiAAAAC4CAYAAADaI1cbAAAgrklEQVR4nO3deZxU5Z3v8c+prat6g252BJq4AYLiivtOjGvGaDSbSV43y0xyc03u3JtMFjOTzEyiiTHzyj537pg4NzqJmkzUqEEjCJFFRZFdGkR2upulF2hqX87946nqpukGCrr6nFPV3/fr1a9Dnao69RTP07/+1Tm/5ykLsBERARbuTbOsPQOAhQ1Y7jZIRCqIjY0FNlwxOkDA7eaIiHe82p45LOVQ8iEipWSZqGLB0vaMEhAR6VU45zG9zseVY4KMDikJEZH...
0
math
grade-2
names-and-values-of-all-coins
false
true
Which coin is this?
"iVBORw0KGgoAAAANSUhEUgAAAPYAAAD2CAYAAADlEnrIAACv4ElEQVR4nOz9XUybZ9Y2DB+9uWNkTGR+Igdi3sltiBUECnpwOiJ0UuSwUfLp/SI1ASqSjU6jyWwMtDOVlWwUlL76poJuJEKdJqYbk9Hc040EFUgqRY8eyAZBNFOCpphHREFEDvhJX36tgG0FY+EI5dtw12Jdpy8bk1/S6ZKQjX3Zvnz5XOf6O9ax3njy5Al+kV/kF/l5yX+86hP4RX6RX+T5y3++6hP4RZ6vRFcj7IIZ0o1v0P8LCwvYuXMnDOnGN/SOS/TYL/J6yhu...
[ "quarter", "dime", "half-dollar", "dollar coin" ]
null
2
math
grade-7
similar-and-congruent-figures
false
true
Are these shapes congruent?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEaCAYAAAArGyAnAABvRUlEQVR4nO3dd1xV9R/H8RdLQZYKIrhiCSqu0gzNkSP3iBw5S3FgrlwpLhRH7pF7j0pTHDnI0c8cmTgLcAuouQAVVBBkc35/IDfJBXrhMD7Px4NHcc65575vj9SPX77n89FRFEVBCCGEEEIIoRW6agcQQgghhBAiP5ECWwghhBBCCC2SAlsIIYQQQggtkgJbiGzQq1cvvLy8MhxLTk6mcOHCREREqJRKCCGEEDlBCmwhssH58+epVKlShmMhISEUL14cS0tLlVIJIYQ...
[ "no", "yes" ]
null
0
math
grade-6
changes-in-mean-median-mode-and-range
false
true
Look at this set of 5 numbers: How would the mode change if the number 98 were added to the set?
"iVBORw0KGgoAAAANSUhEUgAAAMsAAAAkCAYAAAAn6c5kAAAGcklEQVR4nO3de1BUZRzG8e85e2TlolCrLJEVGAloSmnmCGKhhiOTkaXm5ESW2WRkk1nZdcqxzC7TzfGSlZOlBnmlG2oZXpMQSbKS0bBIM0BQQC7LsrunP8qdCHDP5rvp6vv5891z9nnmnfnt9eysouu6DmB3OWhsseHUXehI0vlNAUyKSlCnzgSo2l9ruq7rDY5mmhzNZ7adJJ2lgjQzQZoZze50yEGRpFNodDSjKSbUJqf9THeRpLNek9OO6nA5z3QPSTrrOVxOVF2...
[ "no change", "increase", "decrease" ]
null
0
math
pre-k
cubes
true
false
Which shape is a cube?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAUrUlEQVR4nO2d2XMc1X7Hv6f3nkWSLcsbxmKRMbZlbNlwCakKSdUND1TlVkilKuSFpyQv+R/ymrykKlV5u6m6D6mkErhsxmD7YhMgwA3YF2wwEGwTU8i5kWRp9ulZes/DmTOLNLK19Ewvcz5P8mjcczTznV+f7v6dTxPf9/0lC/ifOlB1AccHhxM5JAJkReBQCtijAGTJ9P0rlbCHxeFsnKfHAOn7Ov3HPgU4nKap5nCiRtUFbtaARQu4VQeEikN/wUPLiTJZkWY...
1
math
kindergarten
subtraction-sentences-up-to-5-which-model-matches
true
false
Which picture shows 3 − 1 = 2?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAARIAAABKCAYAAAB3ndsNAAAOFklEQVR4nO2daZBU13mGnzvd0zPTPTPMxgxILIJhF0gsMhKRkYhsUrZjbEsmKDKpFMZVSqSqqJQ4qcqPOI71I38S2UmsKsVSRYXiEEqueFGEVHISYTCgkYBhG7HMAgzDMPve+3ry4073bD3dTd/b3UPzPVVd03c757zw9XvPPcs9mlJK9QSgzQPOMIQUgiAICbFqUGaBlXaos4HW41fq1FiuiyUIwt3Ko+VgbfXoGwttsNqhu4wgCEIinGFodkN3AFo8UDAW0g+...
1
math
precalculus
determine-continuity-using-graphs
false
true
Is f(x) continuous at x= – 2?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAAB/WklEQVR4nO3deXiU93kv/O8zq5aRNEICSSwSYAwYLGGwsQ0GGwfHdu3ECTipnbxZnDdNj9Osvdqek9OT5jptXL9pm+WNY6c5aXNiu81pGr+x43iRCTbYEBGQkUEgsZpFC6BlpNFo1md//xjNoAEJzUjPTzMjfT/XxSU0yz33PM/MM/fc+v1+j2SapgkiIiIiIrKELdsJEBERERHNJCywiYiIiIgsxAKbiIiIiMhCLLCJKMWuXbuwePFiPPjggwCAD3/4w3jppZfGvK2...
[ "yes", "no" ]
null
1
math
grade-1
times-of-everyday-events
true
false
Todd is running errands during his lunch break. What time is it? Choose the more likely time.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJYAAAA2CAYAAAAlHWAMAAAKR0lEQVR4nO2dfWxT1RvHv31Zy7bupaN0rSsbdtmmAQKRhW3oBDOI0w2VyZjVOcyERAgR/WuyTMCILhqNCWIFjYkSnBGCEWVmaIIRFic/ofKiZmXjRVEpDGrYunVs676/P2Ybrm330u5uSM4nuVnueZ7zPM85++7unnPbXAVJuvqA9h6gywcMEALBmFErgAQVkBUHpGoAhes6+b/OyS5LcCuRlwio23qGTswaICd+SHUCwVjp8gHObuBiH3C6B1B2DgwZhKgE0ZC...
1
math
kindergarten
cubes
true
false
Which shape is a cube?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAAO1ElEQVR4nO2da3BU5RnHf7vZ3BMgEJJAokEjQaAkIlRndOptbK0VER1rL15qrdpOOx07vXxoO9PaD7ad1g/ttJ06XkAFraIdnWCVoiNamtZQY00sSIgRiISEgJBkE5INSbcfnj09u7mRwNk95z37/GaYHA6bsy/Jb5/3vOf8z/sGotFotGsYPjgB4VEYiaIoniMUgMIMWJwHpVkQ6IpEozv73G6Wokyfi2dBqPWE/GVBFizJF6sVxWuER6FlADqHYe8JCPaNyD+...
2
math
precalculus
find-limits-at-vertical-asymptotes-using-graphs
false
true
The graph shows f(x). The dashed lines are vertical asymptotes.
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH3CAYAAACBwSh7AACHw0lEQVR4nO3de3hUZ702/ntOmZlkkkwOkISEhGNSQgmUU0kLBVpULLWWKrvWWq1762u12uqrvh7rVku7/anVrW91V1/dbbXd1VZ7hNKWlnBoOAcIJEASAjmTwySTyZzXrFnr90eYQCCQmWStzCH357q8bJI193wzzKz5zpNnPY9GlmUZRERERESkCG20CyAiIiIiSiRssImIiIiIFMQGm4iIiIhIQWywiSaRHTt2YMaMGdiwYUO0SyEiIkpYGl7kSDR5rFu3Dvfffz8...
[ "$\\lim _{x \\rightarrow-3} f(x)=-\\infty$", "$\\lim _{x \\rightarrow-3^{-}} f(x)=\\infty$" ]
null
1
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?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEuCAYAAAC08GWcAACFQUlEQVR4nO3dd3hUZfbA8e/0kklvtAApdEKRqoiAiChiQcACioplLdh11XXtqD9d67q6ay8gooACioqg0nvvvbf0NpnJ1Pv74yZDkF6SKTmf58mTYZJMzoTkzrnnnve8GkVRFISoQ3Icfg6U+yis8FPuUXB4/Ti9Cg6PgsOrqLcr/x24XXW/x3+M+xTKPOqfUZReg1mvwazTYNaDJXD78Pu/3mepvC/WpCXOpCHepCXerCXOpCXepL6PMWqC/FMTQgghxKnSSIItIkV...
[ "194", "–28", "7", "– 2 5" ]
null
3
math
grade-2
equal-sides
true
false
Which shape has 4 equal sides?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAH9ElEQVR4nO2dXU/bSBSGXydO6KYQehHtBwIVqdpFRQIJLkDQwo+HEkQkQAKJii2VIoHYrpSLNgEXglPvhUHNhjixE3tmzpnz3LV86IQ8GdvzzsxxgiAIvrSBCw9odQA/gCCMjesAU3ngzxLwWxFwvtwHQa2puyyBM+tlwP3khf/4owgsvAwtFIRxaXWA81vgnzbwtwfkmn74BZFMSJOpfOgUANx0gFyn6wuCkCZPTj0EQE5vKYItiGiCEkQ0QQkimqAEEU1Qgog...
0
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?
"iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAArKElEQVR4nO2de5ybVZ3/P9+T5HkyMy2WS0tBERFLkxkoUMpFaDtJmwGBRQUEXdbFXV3dxZ+rsCqigLcF8bIK7sUbu7qKrFIQFLBSJp0kvXEbKVAyybTcpCqFglw6M83zJDnf3x9JSmbmueU2mRnO+/Xi9aLPOed5ziT5POec7/me7xdQKBQKhUKhUCgUCoVCoVAoFAqFQqFQKBQKhUKhUCgUCoVCoVAoFAqFQqFQKBQKhUKhUCgUCoXCGmp3BxRAOjGyUIjAf4JxFoA...
[ "1\n5\n of a full turn", "1\n2\n of a full turn", "1\n8\n of a full turn", "1\n6\n of a full turn" ]
null
3
math
grade-2
equivalent-amounts-of-money-up-to-1-dollar
true
true
Look at these coins:Which group shows the same amount?
"iVBORw0KGgoAAAANSUhEUgAAAXwAAABECAYAAACCuY6+AABmKElEQVR4nO29d5jdZ3nm//nW0+uc6b3PSCPJ6t29F2wMNqYTQhLisAa2ZHdTF7Ibdjf5JWxMWBabEqoNxOBeZVuyZFm9jcpImt5nTpnTy7f9/jgzBwsMSC7IQXNfV64IWTPne5/3nOd93+e5n/sRLMuyWMQiFrGIRfzOQ7zYD7CIRSxiEYv47WAx4C9iEYtYxCWCxYC/iEUsYhGXCBYD/iIWsYhFXCKQL/YD/C7DNE0Mw8AwDPL5PHNzc5imSSaTIZ1Ok0wmcTgchEI...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAtsAAACnCAYAAADAD5A7AAD9F0lEQVR4nOy9d5wkh1mn/1SuzmFyzrMzm3PeVZZlK1g2xgnLCTgbH4eBO3N3wJHMjzuSCYbDOIATzpZsJSutwkranHOcnEP3dO6u+PujZwcMhluttEHeev4ZfVY7XfWt992ut956gwC4eHh4eHj81OO6LhMGXMhDxgbL+/b38PDweMORBQhJ0OWHGhUEvGDbw8PD46ZgouSyL329z8LDw8Pj5mFDGOTrfRIeHh4eHteG8/nyzzoVFgXKmRcPDw8PjzeWjA1nczB...
1
engineer
grade-8
identify-laboratory-tools
true
false
Select the round-bottom flask.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AAA1a0lEQVR4nO3deXRc5WH38d9dZt9ntG+WLS/YsiWvsi3JtmwgkDZrEy8Ymr4Ji1fWlKZtmlbtaWgJbwivgYBJAjQtXiBtk0CApMUIYuNVkrXLkrUvo12zr3d5/5BlvMyMRpqRNBo9n3M4J9hzFyt8fe/c+9z7AARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEMT0oWZ7BwgilnzrW98y+f38F0V...
2
math
grade-5
understanding-probability
false
true
If you select a marble without looking, which color are you more likely to pick?
"iVBORw0KGgoAAAANSUhEUgAAAQkAAACxCAYAAADXhkjIAABWr0lEQVR4nO29e5QU1b33/anq7pnp6ZmBmWFgYIBBBASCokEjiBlP8AgkkidechD1+BpNVjS+73pzImetxBjjefIo6sk50bXyHJ8k7zHx8mhM0AfJMUeNl3g9IjARlAAid2Zg7pfumb5UV+39/rGrqqt7em4w0zNgf9eCPXXpql27an/39/f77YsmpZTkkUceefQDfawzkEceeYxv5EkijzzyGBB5ksgjjzwGRJ4k8sgjjwGRJ4k88shjQORJIo888hgQeZLII488BkS...
[ "black", "light blue" ]
null
1
science
grade-3
animal-adaptations-beaks-mouths-and-necks
true
true
Ringed teals eat invertebrates and plants that live near water. The shape of the ringed teal's beak is adapted to filter through mud for food. The ringed teal gathers muddy water in its beak and then pushes it out through gaps along the sides. Bits of food, such as plant roots, are left behind inside the teal's beak. W...
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAEKCAYAAABnkCFsAAEAAElEQVR4nOydedxVVdn+v/e91j7nAeRBBURRcABRFCfSnBLFISWNnIe0QUttstQcq7cyLS3HVyVn0xx+mWYWlolDOSGiiOQsKuCQiqIy85y917p/f6x9DjwyPRBm+p7r83k+cM7ZZ+219157n3vd67qvS8zMiqIgxkgTTTTRRBNNNNFEE0008fGEquK9R/I8t2Zw30QTTTTRRBNNNNFEEx9/qCraDO6baKKJJppoookmmmjik4EYI/pRd6KJJppoookmmmiiiSaaWHF...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA88AAAEKCAYAAAAsMWftAAEAAElEQVR4nOz9ebwmVXXvj7/X2rue55weTs8NNNDMkwIqwZigEME4EIeoQROjMVETk5vEb9TrmJvcqzFRE5XkOlxn4xSvicZoMPGKUxQHBBEQUJlnuumGns/wVO291u+PVedAy9QgCerv+fjiZfcZ6tlVtat6r70+g7i7l1IwM8YYY4wxxhhjjDHGGGOMn06oKjlnROSBHsoYY/xMQseF8xhjjDHGGGOMMcYYY/z0w8wopTzQwxhjjJ9Z6LhwHmOMMcYYY4wxxhh...
0
math
kindergarten
classify-shapes-by-color
true
false
Which circle is brown?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAIGklEQVR4nO3df0zU9x3H8df3fgDH75tIRT1xEemc0vBTMirWLbbOrP3Ddt3WLms2V/uHMfvRzXVxa7JmWZqspvsR1/3OakzXNv3FWNIurWtT/rAqaMGhU3EdN6kICBwc3AHH8d0fN5KlhSrc994fPp97Pf5RguFeh0+/3/slZ9m2bV+dAi5FgHAcmLZBlDSPBeS5gfXZwE0ZgHV10rZPjqqeRSarzwc8XZHEByUZwM05iQqJkhWOAxfGgd4p4GIEcI1OJz7ByMh...
0
math
grade-2
more-less-and-equally-likely
false
true
On which color is the spinner more likely to land?
"iVBORw0KGgoAAAANSUhEUgAAAXQAAABkCAYAAACWwst8AAAOc0lEQVR4nO3da1Bc12EH8P+KBXaXhb0rgSvbAiPUWqoeIO2CrTiu9bDiR235NbEFCNuV5cQZ1Y9JY2c8bRwaTWasSG2nzfRDkzrJTF0eUiRku+lkauuF00qK2F0EgliWeUggyY6ItPfy0IJYcftBwcawC7tw9567l//vi8QC5/z3y58755571qKqqgoiIkp6c0QHICIibbDQiYhMgoVORGQSVtEBpmNg4CpkRYYclBGUZSiyDABwSRLckgTJLUFyScjIcIgNSkSkI4u...
[ "neither; white and green are equally likely", "green", "white" ]
null
0
science
grade-6
identify-elementary-substances-and-compounds-using-models
true
true
Look at the models of molecules below. Select the elementary substance.
"iVBORw0KGgoAAAANSUhEUgAAAREAAAAiCAYAAAB4De05AAAKEUlEQVR4nO2cW0xT2RrH/zXsUgot1EsiERorgtAW0RoVo2cm3kXHwINxxIgxIyoOHC+IROdEvERBjQM46swYYR4Mjp4YteSIAvN2HLw82FMtZbwE0AIZnCqtZSyFTeA8YJkRWrpvls5k/ZL90rXXt/5kl3/X+va3lqi/v78fBAKBwJExoy2AQCD8tSEmQiAQeEFMhEAg8IKYCIFA4AUxEQKBwAtiIgQCgRdBfDq7XC7QNI3u7m7QdA8AgKLECA4OBkVRkEgkgoj0Nwa...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAcAAAADMCAYAAADkkHO8AAAcoUlEQVR4nO3de3RUVZ4v8O8+lapKhVRehIctRMOrAyHyFnLx2QqK3ax2ta5p6CXaPYCNT1TAUec26giCDoqtl+nuaeh2cWF0ri2Co4203mnv+ACah1HABqd5GIKiARKSkFTVOWfv+8epKvJOVeoQEvb3s1YZcs6pfX6JWflmn7P3PgKAAhFRJ+04rfDdXkDQc74rIWpdrQ0cOAN8HQFy04Arcpztxnmtioh6PIYfdXdBj/NzCgB19tntDEAiSgnDj3qC2M+p2ei...
0
math
algebra-2
outliers-in-scatter-plots
true
false
The three scatter plots below show the same data set. Choose the scatter plot in which the outlier is highlighted.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAU4AAAFGCAYAAAAFAHYEAAAvkUlEQVR4nO3df3AT550/8PfqN0aSbRmTryEGl8hQfjikONg4MRPINErmjsxN0/wwvSS92mmbcwqh10ma3JAvPprjxoFjGgIcYdp6MnfnFkKTlDCZQr5XwFdibAUfFGyCzQ8BwT4QlsFa7PVK1n7/MBaWLRkLtJJsv18zjb0frbWPXHjz7O6zzyMoiqL8rwyc7gK8vYBfARERDaATAIsWyE0B7jEAwv/2KEp9Z6KbRUQ0OhRaAV1LV99GlgGYNbEvVYmI6BZvL3D...
2
math
grade-2
ordinal-numbers-up-to-10th
false
true
The first picture is a house. Which picture is eighth? first
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABdCAYAAACfMRFHAAAguUlEQVR4nO3de3xU1aEv8N9OZgbzmAkhkYSQCCS9PELCo7zjsdBjCPjsQR49gqeUKpbWXsAX9tOrIn64n15RPILWtw0eUT94oNArKhJqodYERAqGl2ATQyc8hssUM3lgZiaZ+8cmk5lkHnvP7D0z2fv3/XzgEzL7sfixsvZi77XXEjwejwdERERERKSIpHgXgIiIiIhIS9jBJiIiIiJSkGod7G9dHgz72IHxnzTjWxdHoRARERGRPkTUwd5x3oU1X30XsuO895IbDW2...
[ "dog", "house", "paw" ]
null
2
science
grade-5
identify-earths-land-features-using-photographs
true
false
An island is a piece of land that is fully surrounded by water. Select the island.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOEAAAC0CAYAAABi8Es+AAEAAElEQVR4nIz9ye8tSZbfiX3MfPY73/ub3xQR78WckZVZA6vILk7VTbZaosRuobWQIKkBARKkRS8a0kotAdpILYCgNi1opb9AA9CN3lAQ2ZxZrGJVJTMrMyIzpje/33xHn90GLfwOfn/vJVsXEe/n7tfc7Nixc77n2LFjdsU/+sW5BQFs/rVYQAiwtvkLls1nU1K0nm1KiHdc/5s+9q0bu77c1WTtrtVtUbtuQew9vEPR243Yu/9uCRXbG4ul+W/9pWVNw+6dTQ3...
2
math
grade-1
time-and-clocks-word-problems
true
false
Steve and Mark went to a concert. The concert started at 2:00 and lasted for 4 hours. What time was it when the concert ended?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAHwAAAB8CAYAAACrHtS+AAAdH0lEQVR4nO2de3hU1dnof2vvuSSZmSTcJqESbgkgBhK81ZqgliqgVj0VrJ6vLdbvO61S+XjO+RTkfH71gpc+VVD7HEDwtKefgrafrUgvtnJReSqYtiAlCQnXGW5BmBluSSaZzGXvvc4fkwwZEi5zSzDk9zw8ZPaevdY7+91r7bXe9a73FVJK6QmDKwB+HTRJP30IkwCHCmNyoMACwhOScktzb4vVT09wQy6Y9gWiH4ZaYJwt+jT003fw67CnFY6FYW8AlGYteqJ...
1
math
grade-2
fractions-of-a-group
false
true
What fraction of the shapes are circles?
"iVBORw0KGgoAAAANSUhEUgAAASgAAADeCAYAAACOu52pAAAcgklEQVR4nO3dTWwT6f0H8O9iOyGeOH5N2uKEOAoNTYwq7QECEghaqSDxP+6C9rgShQNcSnm59MCueluWshdyKOyeK7I9Fomt1KVqpLxwq7CzRKRx1k7U2vF7xkk8Y/M/JM6ywcHjsT0zdr6fI2Hs3/OV88v4mXmeee/169evQURkQPv0LoCIaDdsUERkWGxQRGRYZr0LKAnGpgAAYj4DABDaugAAI93HdavJiJiTMsypNWjeoEKpAJ4v/R2B6CRCyQByUlbRcVaLDT6...
[ "2/6", "4/8", "4/6", "6/11" ]
null
3
math
grade-4
multiply-fractions-by-whole-numbers-using-models
true
false
Which model represents the product 3× 1 5 ?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAHoAAACOCAYAAAD+WhzrAAAOiUlEQVR4nO2db2wT5x3Hv8YU0qz1GYlsWVfkC+GPmg75aKWWClaMhCBVt9qItgkvpiRL6LoiNY7yJryobIsXq1StCZPYygRdqkkjwMgcVipoqewAgwVp+NAwLW3AlyUdVK7kc9ICYWG3F8dzsRMncZy75865+0ioTRw/z+P7+Pk9z+/uuedskiRJt+4B/beBkfvAmASLecBCG/CoHVhZCvxgEWC7NSpJF4f1bpaFljzrABZ+eVv+4YeLgNXfk78FFsXPyH3g2nf...
0
science
grade-5
identify-vertebrates-and-invertebrates
true
false
Select the invertebrate. Hint: Insects, spiders, and worms are invertebrates.
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK8AAADMCAYAAAAF8vOBAADp4klEQVR4nOz9Sexk+XbfiX3Ob7r3RsR/yH9OVZVVr+rN75GPpEiKFIemRUqiNViE24AtNxpeNGAY7QlowL03PACGAW8Mr+yFAQP2wjZso92C1YJhq9XslqgWKYqk+Ob3asyqnP9TRNzhN5zjxU2iF6aMB9SmDSg2mUgkkBnxP3HuOd/zHeT3b8y+voUTz796/avXfy5f+wbfP8KTDHcC/Gvn65+7f1W4/+r1n/fXiYevb9ffH9p/9ufuXxXuv3r9/8Prz+q02H/...
2
science
grade-4
compare-properties-of-materials
true
false
Which would smell the most?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAKUAAADCCAYAAAAo2gI4AABlTElEQVR4nO29eZQl2V3f+bmxvf29fLlWZta+dS29Sa1Wt3ZhJMGAQUaCwRoNyIMGLIM9AmM8nrFn8BnwGTBm7DFwZB88lmzLyMYII2SxCCQhqdWA1u6u7q59r8rKfX9rLHf+uBHxbsSLl5nVXd1dkup3TuaLuMvvbt/7+93f3UJ8ZU3K+0pQMblH9+hlpQ0fzjbgVhfqFrxxSLkb9wB5j14pqphwX0k9b/o9d+MeIO/RK0kR/lzZc7Nemazc/eQHkq7n4weSZte...
1
math
grade-3
parallel-sides-in-quadrilaterals
false
true
How many pairs of opposite sides are parallel?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAEOCAYAAACzXGCqAAAmSElEQVR4nO3de3Ccd33v8c8+erRX7Wp1syxbvkQOBDcGGkJIQkhgUihJCumh7QxnhjKdc3p6OSWnFEraACFxQgwBCoe0gdPL9HQ4tEOZKTAnSZNwAhRCShJyAUJI6kAc27It6y7tarUXPfs85w/H+9uVZVmX3X328n799TzP7EpfS+uZj3a/z/cb8DzPEwAAAICqsPwuAAAAAGglBGwAAACgigjYAAAAQBURsAEAAIAqImADAAAAVUTABgAAAKqIgA0AAABUEQEbZ3X...
[ "1 pair", "2 pairs", "no pairs" ]
null
2
math
algebra-2
describe-linear-and-exponential-growth-and-decay
false
true
How does g(x) change over the interval from x=4 to x=6?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABwgUlEQVR4nO3de3xU5aEv/N/cZ3IPuUxCIAFE0CCgKCgIitWqrdYt2G6tby/2Y7u33b2/+7T1xbsi9ezdy6lVT0/P7lZ7dt9217formKgKCg0VJAIwQSrMUAmATKTSTKTua77+0ecmCFcMrCezEzy+/6jGTK/ebLWzJrfPPPMGothGAaIiIiIiMgU1mwPgIiIiIhoMmHBJiIiIiIyEQs2EREREZGJWLCJaNzeeustXHHFFVAU5aT//sc//hGf+cxnJnhUREREuYUFm4j...
[ "g(x) increases by 100%", "g(x) increases by 2", "g(x) increases by a factor of 2", "g(x) increases by 3" ]
null
1
math
grade-4
compare-area-and-perimeter-of-two-figures
true
false
Which figure has a greater perimeter?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAKAAAAB6CAYAAAA4alhkAAARfklEQVR4nO2de1AT5xrGnxASA4IEI1fjAC3gEfBQixRb5Sa0og7FVq20Yjn1tAoCEhE8KF5QvHQUrfcRrVoV22KNF6qODLZO40zHtB0u7YilICOoxRaVaiQ1hmTPHzFpEBSUJJvdfL9/JNn9vn2SeTYm3777vByKoqibD4FGJaDQAJ0UCASzYc8BnLlAgCPgwQc4N1UU9cM9umURbJGIQYB9g1L3wIsPDB+ocyeBYC4UGqC+A2h9CPymBOzudeo2EPMRLIEzV+c...
0
science
grade-4
use-evidence-to-classify-mammals-birds-fish-reptiles-and-amphibians
true
false
Amphibians are a group of animals with similar traits. The following traits can be used to identify amphibians: They spend part of their lives in water and part on land. They have moist skin. They make eggs with no shells. Observe the animals and read the descriptions. Select the one animal that has all of the amphibia...
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAp8AAACmCAYAAACcAuREAAEAAElEQVR4nOy9ebxkVXnu/33XWnvvqjpTz3M30MwCMimDzLOgIhpAUFBz0WiiXpGoSdREbzRXvCYSB/Rn9IoKiiSCohIUDCijTNLMMzRjz+MZqmrvtdb7+2PtU3LAAb0q92I9n09/uk9X1a61165zzrPf932eR27apLr9AAxZ+uijjz766KOPPvro4w+C0QD3jYNs9qp94tlHH3300UcfffTRxx8aowFEVfX5XkgfffTRRx999NFHH38acE//4jNfPgLjMsa0ZF2...
1
math
grade-2
select-three-dimensional-shapes
true
false
Which shape is a cylinder?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAK4AAACuCAYAAACvDDbuAAARU0lEQVR4nO2d2W9b2X3Hv3fhdklJlLVa0WJbo8XWanvQDJqg85CHAkVTNAXyMkCQQVEgfeh/U/Slde2OPZpxYdRJPJ4EM4CTesYzdVKlXmTZki3LY5uWJZKSuG9368PlpUhRtEmJIu8hf58Xw5R4dUh++Lvn3PM953K6ruvrGWAlAURVQNFBEJZD5IAWARiRgB47wK2ndf2PkXo3iyDK5/utgPgkYfznqB0YcxtWE4TViKrAchx4nQEeJwA+ohg/IGkJK9MiGI4...
2
math
pre-k
count-shapes-in-rows-up-to-10
false
true
How many stars are there?
"iVBORw0KGgoAAAANSUhEUgAAAvgAAAE0CAYAAABZ4EexAAA/JUlEQVR4nO3deXBc9Znv/09v2hdLsi3LkjfJGIxNjI0Bhy12bJIQICzGQBKWDDOJk9QkhJ0wgaqZW5Pcm1TCnbq/Ku6dqblJpiYDJJDJ1Nw7Q7YBApdkwEsMxvumrbV2y5Zavam7z+8PoYAdy1r6fPt0n36//iGFus95TD6I55zznO/XY1mWJQAAAACu4HW6AAAAAAD2ocEHAAAAXIQGHwAAAHARGnwAAADARWjwAQAAABehwQcAAABchAYfAAAAcBEafAAAAMBFaPA...
[ "6", "3", "10", "8" ]
null
3
science
grade-3
identify-properties-of-an-object
false
true
Which property matches this object? Select the better answer.
"iVBORw0KGgoAAAANSUhEUgAAAKwAAADQCAYAAACa0YpiAABF20lEQVR4nO2debwkZXnvv2/tvZ119pUZlgEEZFdBBYNKEIOSSNySq8GLJkZjRC/JjZrERGMSdyO5LlExAReUuAsIIotBtgGHHWZh9pkzZ+Zsfbq79vf+8VSd7jMLzAwDQw/1+3xqzpnT1dXVVb963uf9PcurtNYawPd9tmzZwsTEBHEcU6DAwYZlWfT09DB37lw8zwNAaa11q9Vi9erVLF68GM/zsG37IJ9qgQIQRRG+77N27VqOPPJIPM9DtVotvXLlSo4//viDfX4...
[ "bumpy", "stretchy" ]
null
0
math
grade-2
compare-vertices-edges-and-faces
true
false
Which figure has fewer edges?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAIAAAACACAYAAADDPmHLAAAWGElEQVR4nO2de1zUVd7H3zOAIohY4QWVB0UuwWOCKGYbrqhPhbnlPXSjVBAN1wR5uaso7mAtgZcEFS9ZCWoZigVqbpqlFOqmJQgWxkVhoxzkpjBigMPM88cME5mKwlx+A/P+R4HhnC+v85lzfud7Puc7IqVSqSxrhKJbIGsCuRITHRhzEdiYgYsV9OkCorIGpfJcraHDMmEInuwB5oW3VF/YdwE3a5U6THRcZE2QXwfSRii4BeJaueoHpsHvHNiYqcYa4GYTiJt...
0
math
pre-k
one-less-with-pictures-up-to-5
true
true
Count the spiders in this group. Which group has one less than the group you counted?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABmCAYAAADxjOYpAAA2o0lEQVR4nO3deXxb9Z3v/9eRrdWSbEu2vEnel8RL9hBnIZBQCNACHaC9TKHT6UCn28AsnaGdub+2M11m2oHeX3tbpjMtXaaFlt5CKdCWfQuQhWxObMeJF3mTZVu2ZEvWLlnn/qEkNJcQAjGJA5/nPyTO0Tlf6eTzyJuvvuf7UVRVVRFCCCGEEEIsCM35HoAQQgghhBDvJhKwhRBCCCGEWEASsIUQQgghhFhAErCFEEIIIYRYQBKwhRBCCCGEWEASsIUQQgghhFhAErC...
null
[ "iVBORw0KGgoAAAANSUhEUgAAA7sAAAB+CAYAAADlVwZsAABqHklEQVR4nO3dd3xcV5nw8d8dTdcUlVHv1baKe7fjJE5zAkmABDaQsCwQYJe2hbrvLmVh910gYReWti+EshBCWBJIgSR2qp3EvciWZNkqozYzkqZImt6kue8fYysxsR2nuT7fzycfKdKde8/cM0c+zz3lUQAVIYQQQgghxJtCVVXGU9Afg/AszEhvW4izQquANQeazFCiBwUJdoUQQgghhHjTjCdVdofOdSmEuLStsoH2XBdCCCGEEEKIi0lfLPu1TA/zcrMjTUK...
0
math
grade-6
identify-equivalent-expressions-using-strip-models
false
true
This model represents the expression 5+3t. Which expression is equivalent to 5+3t?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAA+CAYAAAARUWyzAAAHOElEQVR4nO3dWWwcdwHH8d+O7V0fu+tjfdtJ3GLHiWtEglMUSGJqqhDRgxdEQLxwI1UCVeIBoTYIIVHKC6AKqQ8IlTwgeKAI1EKVErVpEzd1GymJaRMTO7bjuHbrY33tYe81w4OldZakbYpmdzzx9/PkuaSfVhrPb//zn1mPZVmWJE1GruiZtx/X4NyriiQWBLhVV+1+PdX3Wnb50VcO6PLcgIOJALhNwFejPfX36dvdT6rF3+50HAAu47EsyxpeOqfH+x9Wb8fDCpa...
[ "3t+5", "9t", "8+t", "8t" ]
null
0
math
kindergarten
count-corners
true
false
Which shape has 3 corners?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAAGnUlEQVR4nO2cy05bVxSGf3PJIE3aWas+QNNHyLSP23dolAZVYpAwaKRSZJNaIqUuUZErIEYyxZwONoibjzkHn732uvyfFOEbzg75gLPXXuvvVVVVHZwBH06BkxlwXoGQpVnrAc9Xge+eAt88AXoH06p6e1x6WcQzL78E1nZP051vnwDff5EsJGRZTmZAfwL8fQYMToGV4/P0BCUjXfJ8NTkFAJ9nwMrsxhOEdMmVU/9VwErZpZAoUDQiAkUjIlA0IgJFIyJQNCI...
0
math
grade-1
more-less-and-equally-likely
false
true
If you select a marble without looking, which color are you more likely to pick?
"iVBORw0KGgoAAAANSUhEUgAAANkAAACRCAYAAABOtR13AABAxklEQVR4nO29eXxc1Xn//z53Rhrto9WLZGwjG2yDARtjMJtIoJgtKRgCmABNQmkCpG0KNC2kTZP0yxKSFPJL2kDza+kvOyn4C07ThiVQwBDAxrEBY5vgDWxJtrUvs997zu+Pc+4ykmxLskaSzXx44at7ZzRz79V85nnO5zyf5willCKPPPLIGayJPoE88jjaEZ7oE8gjj7FGc6yNzV272JfoojXWwd5EJz3pGFOKK5laXMX0khqmldRwUnUjVZHynJ+PyKeLeRzpsKX...
[ "green", "black", "neither; black and green are equally likely" ]
null
0
math
grade-7
changes-in-mean-median-mode-and-range
false
true
Look at this set of 8 numbers: How would the mode change if the number 75 replaced the number 41 in the set?
"iVBORw0KGgoAAAANSUhEUgAAAT0AAAAkCAYAAAD7Ne16AAAHlUlEQVR4nO3ce1BU5xnH8e+eXViBVVAQkEEC3vEa75VIFLVaGS81jTGtDTW1zISJ2lxm0uZmYm1tUqdOotUmrWZqYxXrLSaTIloLxihWgYi2YkOJ0jgqCgaUy7K30z9U2g3ILuGw7OY8n/943wPnmd95efbsOXvWoKqqCmBzOWiwW3GqLlSEECLwGQCjQSE0qBvBiun2mKqqar2jiUZHU9dWJ4QQnSjUZCbUZMZkdzml4QkhvvYaHE0EKUaUBml4QgidaHDYUBwuZ1f...
[ "increase", "decrease", "no change" ]
null
2
math
grade-6
nets-of-three-dimensional-figures
true
true
Which net will make this figure?
"iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAAQJElEQVR4nO2de1hU5b6A3+GOiAMoJN4GUcvCxMsua+d2LHduMw12WJY3VMigk8dBOUrpacjtbZ8kMM8O1Ai0QvKGGokpOmBZqangFiFRGSUBuQnIdWBm7T/Yw3F7RIG5wuZ9Hp4HHtas77d4+b61vt/vW2uJBEEQ6MRkZWURFBSESCQiOjoaLy8vU4ekG0InpaysTAgKChKAf/kKCgoSysvLTR1eh+mUQjZv3iy4uLgIgODcRyyErl8khK5/S3DuIxYAwcXFRYiOjjZ...
null
[ "iVBORw0KGgoAAAANSUhEUgAAAUkAAACzCAYAAAAE9O5jAAAV3klEQVR4nO3de1xUdf7H8deA4N1BC/OWoIKhkKauqa0plllrKWZuullima1uS5JWmm1C1mpeCjIr/XlBbdfY8n6/BnTZVlsTW+/XMUtM1OSqDJf5/cEO5aonkRnm4vv5ePgYHzpwPl9l3vM9M+fzGRNgQ9yGzWbjlBUO50NOMRTpf0ekUlUxQW1fCK0Bt/iDCYWkWzlVYGN7tqurEBGATnWgiquLkEsdyi+9begPt9UsfUYTkcqTUwwH8iDDCgfzwcfVBcmlsot...
0
math
grade-3
fractions-of-a-group-unit-fractions
false
true
What fraction of the shapes are rectangles?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAACUCAYAAACp1l47AAAWZUlEQVR4nO3d3VIbZ57H8Z9lSViyaAnsiNcsdjKO41qzfkltFTkxTE3FczBbFXIFxnfg8z0YUnsDzhWEXMHgqp2TuFIjfDKu2hqbrKny20yMdwCJngBCCBS90OyBEZkkYB5Bd+vt+zmFlp7ne6J/tVrdJ3Z2dnYEAAAAwBWBei8AAAAAaCUM2AAAAICLGLABAAAAFwXrvYCqGTstScqWSpKkRDgsSRpN9tVtTY2ITmboBAAA6sX3AXt2bUX3Fl8rtZzW47UVrZdLRsf...
[ "1/3", "1/2", "1/8", "1/6" ]
null
2
math
algebra-2
describe-linear-and-exponential-growth-and-decay
false
true
How does h(t) change over the interval from t=1 to t=3?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH/CAYAAABtkqoWAABuvklEQVR4nO39eXRU550n/r9vrdoXtJSEQMIYQwwGzG42GzeO7bYdt8ELON1xPMfJd5LJ1jm/033y7ZPJmc64fXJOd9LfeJxMkum07cz0tG1s7I7BAuOAjSwBAhkEEhjLLFoAVakk1b7cusvvD1FCMgKqpPtwq6T36x+7SnXf+nBv1a1PPXrquZKu6zqIiIiIiMgQFrMLICIiIiKaTNhgExEREREZiA02EREREZGB2GAT0SgPP/wwtm3bNubPDh48iLvuuguJRAIA8O/...
[ "h(t) increases by 6", "h(t) increases by 9", "h(t) decreases by 6", "h(t) increases by a factor of 6" ]
null
0
math
grade-6
line-symmetry
false
true
Is the dotted line a line of symmetry?
"iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAAeI0lEQVR4nO3deXxU1d3H8c/v3pnsQMgk7IKyFLRVQVHb6oPlsZsKtZvWilutBauExQVwqYy2KlArQsBWq7W2oj7a1ipSt1p3axVFLai4oAjIlpUQsszM/T1/zBCSMHMzmZmQZOa8Xy9emrnn3nNC+OYu59xzwDAMwzAMwzAMwzAMwzAMwzAMwzAMwzAMwzAMwzAMwzAMwzAMwzAMwzAMwzAMwzCik65uQCbQ21d7yd92DehUoAR4HeVKOWfyc/vKrMyjgF+inAsUgr6...
[ "no", "yes" ]
null
0
math
grade-2
compare-sides-and-vertices
true
false
Which shape has fewer vertices?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAALgAAAC4CAYAAABQMybHAAAES0lEQVR4nO3dzW4bZRiG4ddO0kVpgRWIAwAOoafCYSGkLDgYBIhdD6BSKawQSiqQQHEaNcHOsDCj/pA/2zN25pnrWnk8svQubn0az3yyJ03TNMcXVb+cVc0WVfOmYLD2J1WP96o+f1j16YOqyfF50zw92fVY0L0nH1btvzhbHnz2oOrLD5b1w1DNFlXPX1UdXVT9fFY1PZkvT4ibBI/3li1XVZ0uqqaLt05Agrblf5qq6W5HgX4JnGgCJ5rAiSZwogmcaAInmsC...
1
math
grade-7
make-predictions-with-scatter-plots
false
true
Based on the scatter plot below, which is a better prediction for y when x = 5?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAFhCAYAAABK/t0lAAAiWklEQVR4nO3df3CV1Z0/8E8UJUJMIiqxqAkaFxE2iTR2VmkTVhfd6VZKq7V2h4C1Sk1d3M5Ucfqd0RW331kr/uhW7S5T9Ys/yozVKkvdrRVpK9AKLaYlQa1Kk0K0QFhbiQZLLHq/f7hmTSERc5/cJzd5vWY6w30O9znvYMf79nDueQoymUwmAACARByUdgAAABhOFGwAAEiQgg0AAAlSsAEAIEEKNgAAJEjBBgCABCnYAACQoJwV7D179sSePXtyNR0AAKQiZwV748a...
[ "2", "9" ]
null
0
math
pre-k
fewer-and-more-compare-in-a-mixed-group
false
true
Are there more circles or squares?
"iVBORw0KGgoAAAANSUhEUgAAAQ4AAAA2CAYAAAA273fRAAAHHElEQVR4nO3db2wTdRgH8C/Y0nZd6zo2e8OVqAXMKoHxYon7gwm+EPrauL0j+IZ34N4uRAkY3RtNBrzTFxjfVcPryhtJhFWTvdhCgCmjaDykNwvb7LXrlavMF3pFh7R36213v2fP5+XS/ni+yd33yvV6t2VlZWUFjDFmwVanB2CMiYeLgzFmmcfpAZi7fD8/AwD441ERAPD8tlYAQH+016GJ7EE1l1O4ODYxuZjDN/I1ZJRpfCNfM/WeI7EhDEgHcCQ2hFhr1zpPuDZ...
[ " circles", " squares" ]
null
1
math
grade-8
identify-linear-and-nonlinear-functions-graphs-and-equations
false
true
The graph shows a function. Is the function linear or nonlinear?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAH8CAYAAADrBti4AABeX0lEQVR4nO39e3Bc9Z3n/79a3a371ZItGRnJGGODjeQLGLCxwYwJMJAwsRPWJJUL+TGZIRtyq6nZSk1lU5ssS6Vqhsw3BJhsdrOBzOb7zYQKkICRHQPGduRgY2HLlgAjfNHFti6ta99Pd5/z+8NIsfBNss/H7baej6pU6Fafl94+p/v0q49Od3scx3EEAAAAwBVZ6R4AAAAAuJxQsAEAAAAXUbABAAAAF1GwAYy57bbb9NJLL41d/sMf/qDrrrtOtm2nbygAADIMBRv...
[ "linear", "nonlinear" ]
null
1
math
grade-4
identify-faces-of-three-dimensional-figures
true
false
Which shape has a square as a face?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAOAAAADgCAYAAAAaLWrhAAAiVklEQVR4nO3deXhb5Z328a8kS5b3fd8T24ntLE6cOPtCdiAByhIoHSAlbekyhXaYvlcHWigU2nc6tGX6lmFom0Jp2ZfSJoXQ7CH7ZieOnXhJYsf7GtuyZVmydN4/FDu2Y2exJZ0j6flcF1eIkliPIbeeo9+5z5FKkiSpwQwVRjBYoU9CEAQn8VFBkAYy/CFGB6qGXkk60in3sgTB+8wJBp9yo/0ncTqYFGBPpyAIzmGwQmk31JuhzAjqzj77L4jwCYLzBWnsWQP...
0
science
grade-2
read-a-thermometer
false
true
Select the temperature shown by this thermometer.
"iVBORw0KGgoAAAANSUhEUgAAAI4AAAHPCAYAAACFjuJ1AAAfoklEQVR4nO2db2xb533vv/wj6+85XRIXjcmDtoA9jSxu0bm2yVd3F1ZJIFuAylLz5gJiqLsWGCKa2LJ7AdPWq4tbydIKrItoGxcrWlCRgL2JqMrYgm1iHFxsQ0MOadEhKBklrwJS+bPaiA+VyBL/3RcKT0mRkqXz8FDn+Pf7AEKsc3gePk4++Z7nOX9+j+3+/fs1MMwxsZ90BxhrwuIwumBxGF04D9pRq/HQh9nDZrO1bGsrTqlUgqqqhneIsQb9/f0YGBho2sanKkY...
[ "80°F", "100°F", "105°F" ]
null
0
math
pre-k
addition-sentences-up-to-5-what-does-the-model-show
false
true
Which addition sentence does the picture show?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABUCAYAAAC4PkCPAAAOsklEQVR4nO3dTWwc533H8d+87fsuKVOSKdEU1diWbDiuG8tA7IPtQwGncALYRYwAOcVogRybYw9F4RYFmvTYHoIcUxRIT8mpKJAcUhROHQMF7Lqx69hS68gSqVeKL/u+M/M8PawoURJFecnZmeXs9wMIEqnZef6/g4A/Hz3zH8daawUAAAAgEW7WBQAAAAB5QoMNAAAAJIgGGwAAAEgQDTYAAACQIBpsAAAAIEE02AAAAECCaLABAACABNFgAwAAAAmiwQYAAAASRIM...
[ "3+1=4", "2+3=5" ]
null
0
science
grade-3
use-climate-data-to-make-predictions
false
true
Select the statement that is true about Sydney's average monthly precipitation. Use the graph to answer the question below.
"iVBORw0KGgoAAAANSUhEUgAAAcsAAAFJCAYAAAD0egaUAAB3pklEQVR4nO3deVxU97n48c/MsO/7ogioiIgggguIC66JiTERY5q1iU1ubuqN96ZtetM1vW3Tpre/tnaLaZvbNIlNWqMJpq5R44I7UWQVEFQW2fdl2IZZfn/YOXUEROMMoD7v1yuvyJkz5/keOOc857uc71GZTCYTQgghhBiUeqQLIIQQQox2diNdgLtVcXExv/rVrwAYN24c3//+90e4RHend999l5MnT7J48WIeffTRG/7eiRMneO+99wgJCeHVV1+1erlsvf2BfOc...
[ "March is the driest month of the year.", "Each month has about the same amount of precipitation.", "More precipitation falls in June than in December." ]
null
2
math
kindergarten
rectangles
true
false
Which shape is a rectangle?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAJoAAACaCAYAAABR/1EXAAACeklEQVR4nO3UO24cRxhG0b+Hj0AvZzK8AFtL0G6UeF8MvBztQJZy0ykpERDNQTtoEDCccnAboM6JqlDJF1zUsq7ren0/8+Vu5vY487AOPNn5MvP6bObXFzM/X84s19/X9ePN3rN4zt6/mTn/fLddfrmcefdyqxCe6vY48+nbzF/3M3/ezRxuHrYHkXFKr8+2pmZmvh5nDsf/PMApPTb1zzpz2HcKPwqhkRAaCaGREBoJoZEQGgmhkRAaCaGREBoJoZE433vA6a0...
0
science
grade-3
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.
"iVBORw0KGgoAAAANSUhEUgAAAhAAAACBCAYAAACRpYNGAAAOKUlEQVR4nO3df2xU5Z7H8c+ZactAi6WlrbQULNiCF7PqLmKlclmtV0QJSV1vEXcN/+xG/AlqRGUr7DXKLqCoQPixF2OV4JIuC2Q3XW5WGwqFRiiFgmtWvVT53aFykSkBOtLOzP5BmE2VpfPUmTlzpu9X0qQzPec533P6PN98ZjoztUKhUEgAAAAGXHYXAAAAnIcAEScVFRWyLKvHV25uru6//341NDQYjfXll1/Ksizt3r3buI5AIKDXX39dLpdL77//vvH+AKIvEfp...
[ "The magnetic force is stronger in Pair 1.", "The strength of the magnetic force is the same in both pairs.", "The magnetic force is stronger in Pair 2." ]
null
0
math
grade-1
even-or-odd
false
true
Is the number of birds even or odd?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAAClCAYAAABm8IozAAAQq0lEQVR4nO3dfZBVdcEH8C/4mrqLZlrIrjbPTDOoaD5/qGhvM83A5Gg1aaMZmQOlJjliL+NLJFbYi2k94lNi5oM2I2qT2NRgTTRo+bYr6mjArqJmIpfViUj2giwi7H3+2FrlxTzAuXcv+Pn8A/fcc8/58f3nfDn3d39nWK1WqwUAACjF8KEeAAAA7EoUbAAAKJGCDQAAJVKwAQCgRAo2AACUSMEGAIASKdgAAFAiBRsAAEqkYAMAQIkUbAAAKJGCDQAAJVKwAQCgRAo...
[ "odd", "even" ]
null
0
math
grade-2
match-digital-clocks-and-times
true
false
Which clock shows two o'clock?
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAMIAAADICAYAAAC6ej5XAAAOt0lEQVR4nO3dX2wcV6HH8e/6T+I/kzZSS7KR2hDk5baigt1IEJBs0ydwkAoPdkt1e6W4SLRX2HloUuHwkOSqdh+wJdKXOlKTPpD0n1SaSBd48BaScqmNSqsgGxVCymyulIC65gYKyaz/23MfNnbW4/zZs39m1ju/z0udZM+ecff8zjlz5sxsxHVdNz0H9hRcW4QFF5GqVxeBTbXw2SbYugEi6VnXff9q0IclEpwv3wV1f57K/mHbBnigOZsSkWp3bREuZODjOfh...
1
math
grade-5
types-of-angles
false
true
Is this angle greater than, equal to, or less than a right angle?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAABwCAYAAAAkAwevAAAIyUlEQVR4nO3d0W+ddRkH8O9Zzjqzlo5tosnZFHRgBmNtp4wl3M6iNxpR/wDilZrIpSPRS0MC8cob1Du8hl0T0SsTyBhsbR10wNCJmxDZ1nFowa7HvV50LRuuXU/7voeens/n7rw5eX/P5TdPnvf31IqiKLKMh0efzx9f+PZyfwEAAK7ZdKs/nD07nZnpVidqAQCArnfLgJ0kJ09erLoOAADYEJYM2M3mXB4/cjxFkfzoR3/J40eOp9mc62RtAADQdWpLzWD/5Mcv5s9...
[ "less than a right angle", "greater than a right angle", "equal to a right angle" ]
null
0
science
grade-5
compare-magnitudes-of-magnetic-forces
false
true
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes.
"iVBORw0KGgoAAAANSUhEUgAAAksAAABwCAYAAAAOnzRFAAAgR0lEQVR4nO3deXxU1dnA8d8sGQYSBAJhSSCJkAgaURRC4NVWCCAiLiCLG4hYLVpA4a0VeUXaV+3rUipikMUFMI2iIouAaCsCIlhlDYtATCAbJEA0JBLIMst9/7hMGhKYzCR31jzfz2c+mjBz58zMnZPnnvOc5+gURVEQQgghhBCXpPd1A4QQQggh/JkESwEsPT0dnU530c1kMtGjRw+effZZysrK3Dre6NGjGTx4cIPacuDAAXr06EHr1q0b9HghRHAYMWJEnX4pIiK...
[ "The magnitude of the magnetic force is the same in both pairs.", "The magnitude of the magnetic force is smaller in Pair 1.", "The magnitude of the magnetic force is smaller in Pair 2." ]
null
1
science
grade-6
identify-rocks-and-minerals
false
true
Hematite has the following properties: found in nature fixed crystal structure not made by organisms pure substance solid Is hematite a mineral?
"iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAACyvUlEQVR4nOz957Nt+XnfiX1WTjvnk8PN3be7b3ejA0CQoEhIMmc0pkLNSLLGNS6X/wC7ajzz2q9UqnK5Si5LsizJdk2NzJFdGmokEgABggQBNNCN7tv55nNPTjvnvfJafvHbZ6MbpJrQgESgzlN1qu89fe4J+6zn93vCN0hpmqZcxmVcxp8Y8s/6G7iMy/h5jssEuYzL+Iy4TJDLuIzPiMsEuYzL+Iy4TJDLuIzPiMsEuYzL+Iy4TJDLuIzPiMsEuYzL+Iy4TJDLuIz...
[ "yes", "no" ]
null
0
math
grade-6
interpret-graphs-of-proportional-relationships
false
true
Hannah wants to save up some money to buy a new smartphone, so she babysits on the weekends. The graph shows the proportional relationship between the time Hannah spends babysitting (in hours), x, and the amount of money she earns babysitting (in dollars), y. What does the point (1,10) represent?
"iVBORw0KGgoAAAANSUhEUgAAAisAAAI0CAYAAADcLmlmAABhgElEQVR4nO3deXxUhb0+/meyL0AWsgEhM6AYiUIEISFKWJQgkAACUsyV9lJqNCAuveqtP+u3vdpK23tFWwVU3KhXb1spQckmIrsgAZIQSgBZJJMEmCQD2ZOZycw5vz8mGROTQCbMnDNn8rxfr75qzmxPhsmZZz5zFpUoiiKIiIiIXJSH3AGIiIiIrodlhYiIiFwaywoRERG5tAFRVqZNm4bPP//c9vP27dsxduxYCIIgXygiIiLqkwFRVsaPH4/S0lLbz2vXrsXLL78...
[ "Hannah earns $1 babysitting for 10 hours.", "Hannah earns $10 babysitting for 1 hour." ]
null
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.
"iVBORw0KGgoAAAANSUhEUgAAArwAAABwCAYAAAD8D6OlAAAk2klEQVR4nO3deVRTd/o/8HcSCIEEEQS1uCOggrLIbtUqKlY7VlFxm67TduxiW6zTWqfLjL/WmbZjFWutbcdqtWjrblurrVqLVBQEZFFwwwpVwa3sSyAk+f3BF8bdBJLc5PJ+neM5Asm9n5tz88mTz/I8Er1erwcRERERkUhJhW4AEREREZE5MeClW0yaNAkSieSGfx4eHhg1ahSSk5ONOtbx48chkUhw8OBBo9uh1Wrx5ptvQiqVIiEhwejnExHZCmvod7VaLZYsWQJ...
[ "The magnitude of the magnetic force is greater in Pair 1.", "The magnitude of the magnetic force is greater in Pair 2.", "The magnitude of the magnetic force is the same in both pairs." ]
null
0
science
grade-8
identify-the-photosynthetic-organism
true
false
Use the evidence in the text to select the photosynthetic organism. Racomitrium lanuginosum moss is green because its cells contain chlorophyll. This moss uses chlorophyll to capture energy from sunlight. The moss mantis is green and brown, which helps it hide among mosses and leaves. This camouflage helps the mantis s...
null
null
[ "iVBORw0KGgoAAAANSUhEUgAAAp8AAADOCAYAAAB4pWlzAAEAAElEQVR4nOz9Z4xseXreCf6Ot+EzIn3m9beuLW+7m8127KZtUU1JlDgixdEMKVGizMwCwg6wwAgSRgMB677sALMakRxpNYKE5Y5IiqRIdnU321R1VXW5e+t6lz4z/DlxvN0PJ+uSNfNRrSZQEz8gkIjIjLx5M84f+cb7vs/zCG86ZXnegprEnDlz5syZM2fOnDn/SZjlcNsHwc3Kcl54zpkzZ86cOXPmzPlPzSwHoSzL8s/6B5kzZ86cOXPmzJnzfwzkP33nV/7...
0
math
grade-4
classify-triangles
false
true
What kind of triangle is this?
"iVBORw0KGgoAAAANSUhEUgAAAtgAAADOCAYAAAAEw3WqAAAhTUlEQVR4nO3daXiU5dnG8TOTFQiEQCBABJEs7FESWayUiFjBSlsFW1yQrVAruJVSNmtcUBTErZVNFASrcWOLCSGJBAghSBBcoIkRQRahCThsA2QSJpP3g2/CDllm5plJ/r/j8EN7DM9zfTxzH9d9Pl5lZWVlAgAAAOAQJqMHAAAAAGoTjw/Y06dPV1RUlJKTk40eBQAAAJCXp6+ItGjRQoWFhZKkO++8U7Nnz9a1115r8FQAAACoqzz6BHvXrl0qLCxU/SB/tYhoouT...
[ "isosceles but not equilateral", "equilateral", "scalene" ]
null
0