CHANGING YOU!

In the note to parents that precedes this chatty offering, Saltz says, “By [ages seven to ten, children] know that the sperm is in Daddy and the egg is in Mommy, so naturally they are wondering, ‘How does one get to the other?’ ” The answer is here, in nicely anatomically cross-sectioned detail, along with an introduction to the changes that come with puberty leading up to the egg-and-sperm moment, and a brief discussion of the pregnancy that may well follow. In both its address to parents and children, the text is appropriately reassuring and matter-of-fact (much care is taken to use medical vocabulary for genitalia), although much is missing. There is no discussion of birth control or STDs, and it assumes a values system in which sexual intercourse and having babies are linked, without marriage as a prerequisite. Cravath’s cartoon illustrations are accurate and amusing, and take some care to depict a multiethnic cast. In comprehensiveness, frankness and warmth, however, the whole cannot hold a candle to the Robie H. Harris/Michael Emberley trio of sex-ed books and must therefore be considered an additional purchase. (Nonfiction. 6-12)