This Spanish-language book is one in a series of four entertaining What Do You Know About? books, for very young children whose first language is Spanish. Attractive color illustrations and easy-to-follow text combine to present factual information that younger boys and girls will readily absorb and understand. Tu ¡rbol geneal³gico, which is Spanish for "Your Family Tree," describes all the people that small children first come to know: parents, brothers and sisters, grandparents, and cousins. Four pages presenting activities for children appear at the back of the book, followed by a two-page section for parents, with tips on explaining the subject in more detail.