Tilted Squares

Students know from work in previous grades how to find the area of a square given the side length. In this lesson, we lay the groundwork for thinking in the other direction: if we know the area of the square, what is the side length? Note: A paper version of this lesson is also available. The digital version requires a paper supplement.

By Desmos Classroom

Learning goals: Learning Goals • Recall how to calculate the area of a triangle. • Calculate the area of a square with vertices at the intersection of grid lines using strategies like “decompose and rearrange” and “surround and subtract.”