Evolution

In another superior entry in the Let's-Read-and-Find-Out science series, two well-respected creators of children's books are paired in a comprehensible and interesting introduction to a difficult theory. Cole's exposition begins with a farmer finding a rock that looks like a bone and a child finding a seashell-shaped stone. ""Are they accidents? . . . Could these rocks be the remains of real plants and animals?'' With evidence found in rock layers or strata, she describes how one-celled organisms evolved into more complex plants, animals and human beings. Aliki's colorful pencil drawings and charts make the clear narrative even more accessible to youngsters. Ages 5-9. (October)