Opposites Bidininaaji is a board book about the concept of opposites originally written and illustrated by Brian Wildsmith. Now this early childhood education title is now available as a dual language board book in Navajo and English. Featuring ideas such as high low, big little, open closed, many few, front back, near far, on off, and inside out written in English and in Navajo. The Navajo is written in Roman Orthography by Thomas P. Benally. Published by Star Bright Books.