Hands-on lessons can be fun and compelling, but when it comes to life science, they aren't always possible, practical, effective, or safe. Children can't follow a lion as it stalks a gazelle, visit the exotic kapok tree in a rain forest, or swim alongside the underwater life in a pond. But they can explore a whole world of animals, plants, and ecosystems through the pages of beautifully illustrated, science-themed picture books.

Perfect Pairs, which marries fiction and nonfiction picture books focused on life science, helps educators think about and teach life science in a whole...