An instant New York Times Bestseller! “Unreasonably entertaining . . . reveals how geometric thinking can allow for everything from fairer American elections

Talking math with your child is simple and even entertaining with this better approach to shapes! Written by a celebrated math educator, this innovative inquiry

What am I? I lived a long, long time ago. I had round eyes… lots of sharp teeth… This new concept book from Caldecott Honor illustrator Suse MacDonald is su

A three-in-one, updated compilation of Chris Hart's popular books Draw a Circle, Draw a Square, and Draw a Triangle, now complete with a new introduction and te

Three mice make a variety of things out of different shapes as they hide from a scary cat.