for What's the Difference? by Suzanne Slade and Joan Waites
You can celebrate the huge difference caring people make for endangered animals while you practice subtraction skills. In this sequel to her popular addition title, What's New at the Zoo?, Slade presents a new subtraction problem in each clever rhyming verse. The colorful watercolors include realistic animals set in lush spreads by illustrator, Joan Waites. So join in the celebration of our world's precious animals with this exciting title, and have fun practicing math skills along the way! The -For Creative Minds- educational section includes: Endangered Animal Vocabulary, Food Chains and Webs, Missing Links in Food Chains, Endangered Animals, and Fact Families.
Publisher description retrieved from Google Books.