Gr 1-3-These titles teach scientific principles through interesting stories with child-pleasing themes. The title character in Clever Trevor figures out a way to outsmart the playground bullies by using a fulcrum and lever. In Gotcha!, a camper uses a magnet to cause things to happen that scare his friends. Each easy-to-read book ends with an activity page. Cartoonlike illustrations feature a multiethnic group of characters. Useful books that provide instruction along with entertainment.-Anne Knickerbocker, formerly at Cedar Brook Elementary School, Houston, TX Copyright 2003 Reed Business Information.