8 verified, narrated animations about area, reviewed by hand and checked at animation steps. Watch free; download the video or adapt it to your lesson with any paid plan.
A circle is sliced into 16 equal sectors, then unfolded and reassembled into a shape resembling a rectangle wi…
A right triangle with legs 3 and 4 units and hypotenuse 5 units is drawn on screen, with squares built on each…
An animation shows a rectangle with fixed perimeter 20 changing shape as its width varies, tracing the area fu…
A unit square is progressively filled by repeatedly halving the remaining area, generating the series 1/2 + 1/…
An x-by-x square is joined by two strips of width 3/2, representing the algebraic expression x squared plus 3x…
A 48 by 18 rectangle is filled with the largest possible squares in stages: two 18-squares leave a 12 by 18 st…
Two identical large squares each contain four congruent right triangles arranged differently. In one square th…
This animation shows how the matrix A = [[2,1],[0,1]] transforms the plane by tracking where the basis vectors…
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