Richard Little 
I Know Halves and Wholes [PDF ebook] 

Identifying half and whole shapes is a fundamental part of geometry. Young learners may practice first with flat shapes, but seeing this idea applied to foods they know is much more enticing! This charming book, full of bright photographs of favorite foods, is a great review of a crucial concept. Readers will practice vocabulary terms through accessible sentences as well as the application of the words "half" and "whole, " and a final activity allows them to check their understanding.