Pattern Blocks

Pattern Blocks
Originally uploaded by jjfbaltzell.

A pattern Jonathan made one morning. We were measuring perimeter, made easy by the fact that each side of each shape is 1 inch long. We also measured the area (based on the smallest units--the green triangles) of some of his designs. All of the boys have spent hours and hours playing with the pattern blocks. They've been a big hit for years, now.