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

"This is the story of the Shapeless Shape's journey, and a struggle we all experience from childhood to adulthood: the challenge of finding a place where our ta

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

Learning to identify colors is an essential skill in the early elementary classroom. Learning to sort by color takes this aptitude one step further. Through acc