Tap scissor rails to cut an L, T, U, house or barn plot into rectangles, triangles and trapezoids, set each piece's area, and watch the total add up — or fill a notch and subtract it.
Compound floor plans sit between two scissor rails; tapping a rail at a grid line cuts the figure there, and only a cut on an inside corner lights every piece up as a rectangle. Players then set each piece's area (½bh for triangles, ½(a+b)h for trapezoids) and the running sum is the composite area; a subtract mode fills the missing notch or hole and takes whole minus hole. It targets the slip of cutting in the wrong place or treating a slanted side as a height. Best for Grades 7–8.
A free, no-signup, no-ads math game for Grade 7 — practising area, composite-figures, decomposition, triangles, trapezoid. Play in your browser on the KidsDoMath games hub or explore more Measurement games.
By grade level: 7th Grade Math Games
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What math does Composite Area Atlas practice? Composite Area Atlas practices Area, Composite Figures, Decomposition, Triangles. Compound floor plans sit between two scissor rails; tapping a rail at a grid line cuts the figure there, and only a cut on an inside corner lights every piece up as a rectangle.
What grade is Composite Area Atlas for? Composite Area Atlas is built for Grade 7 (ages 12–13). It sits in the Measurement strand, and it ramps across 8 levels so younger or older players find their own pace.
How do you play Composite Area Atlas? Tap scissor rails to cut an L, T, U, house or barn plot into rectangles, triangles and trapezoids, set each piece's area, and watch the total add up — or fill a notch and subtract it.
Is Composite Area Atlas free to play? Yes. Composite Area Atlas is free, with no ads and no sign-up, and it runs in the browser on a phone, tablet or computer.