Area of rectangles (3rd grade math)

The basic idea in AREA is that we cover the shape with little squares. The number of those squares is its area.

The area of a rectangle can be found by multiplying. In my example, the rectangle is in a grid. We can count the number of columns and rows, and multiply those to get the area.

See also

Area of a compound shape — video lesson

Math Mammoth Early Geometry — a self-teaching worktext for geometry topics in grades 1-3

Math Mammoth Grade 3 complete curriculum

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