This annotated bibliography contains selected children's science trade books published in 1990. The books are aimed primarily at preschool to eighth grade and evaluated by a special book review subcommittee appointed by the National Science Teachers Association and the Children's Book Council. Selections are based on three criteria: accuracy, readability, and pleasing format. Each annotation includes grade levels for each book, International Standard Book Numbers, book prices accurate as of January 1991, and availability of paperback editions. The bibliography contains a total of 90 entries. The books are presented in eight categories: (1) "Animals" (26 entries); (2) "Archeology and Paleontology" (7 entries); (3) "Space Science and Astronomy" (4 entries); (4) "Earth Science and Life Science" (18 entries); (5) "Environment and Conservation" (17 entries); (6) "Medical and Health Sciences" (8 entries); (7) "Physics, Technology, Engineering, and Mathematics" (5 entries); and (8) "Observation" (5 entries). (MDH)