Two titles introduce concepts found in both physical science and nature: the flight of animals as well as man-made aviation is discussed, and patterns in nature and those created by technology are presented. Each double-page spread contains well-written paragraphs, an array of outstanding color photographs, and a simple experiment. Of concern is that knives and scissors are needed for the experiments and the brief note of caution is difficult to spot. Glos., ind. (c) Copyright 2010. The Horn Book, Inc., a wholly owned subsidiary of Media Source, Inc. No redistribution permitted.