In recent years, most elementary science programs have focused on hands-on lessons that emphasize direct observations and firsthand experiences. Because high-quality, science-themed children’s picture books can bring a whole world of plants, animals, ecosystems, and natural processes to life, Perfect Pairs succeeds where science programs emphasizing hands-on activities fall short. Perfect Pairs allows students to fully explore science topics that can’t be adequately taught through direct experiences. Many elementary teachers do not have a strong science background. Some even report being intimidated by their school’s science curriculum and feel ill equipped to teach basic science concepts. Some students love reading fiction. Bringing high-quality science-themed fiction and nonfiction picture books into the classroom engages a broad range of students and supports the goals of the Common Core State Standards for English Language Arts.