Gr 4-8-These books are absolutely packed with wonderful science projects and experiments. The best feature is that each procedure includes an explanation of the scientific principle behind the activity. Children will make a barometer, learn about earthquakes, create a constellation of stars, construct a kite, and learn to understand air pressure. B&w sketches accompany each experiment, so readers can follow the procedure with confidence. Teachers may use these books as additional resources for the classroom. The Spanish translation includes high-level vocabulary and is appropriate for middle-school students. Recommended for all libraries and bookstores.Paul M. Kienlen, Alicia R. Chacon International School, El Paso, TX Copyright 2002 Cahners Business Information.