Grade 3-5–In each of these titles, 13 one- or two-page chapters begin with questions such as What Is a 'Living Fossil'? (River), followed by brief, clear answers. Additional intriguing facts (Anteaters have no teeth in Soil) are included in small Did You Know? bubbles. Text is accompanied on every page by clear, captioned photographs; colorful, well-labeled illustrations; or realistic paintings. Each book contains two see-through pages that must be held up to a strong light for viewers to see the complete painting. Though the material is appealing, the inclusion of some animals is questionable. City, for example, highlights raccoons, dingoes, alligators, and polar bears. These volumes have high visual appeal but are not well organized.
