Offer children these rich zoology resources, with natural-history quality information and illustrations. One book for each type of vertebrates class: fish, amphibians, reptiles, birds, and mammals.
A great complement to classification work, each book in the set covers the unique characteristics of one vertebrate class: food, habitat, locomotion, self-defense, life cycle, and importance.
Simple sentences face illustrations: "Most amphibians eat insects." The afterword explains more about the image using more complex language: "Frogs and toads capture insects by flicking their tongues out..." Paperback, 38-44 pages.