Insect wars, shark feeding-frenzies, worms searching for a date… Readers will be intrigued by these titles and their quirky approach to teaching about body systems, classification, life processes, food chains and webs, nutrition and exercise, microorganisms, ecosystems, and habitats. Raintree Fusion is high-interest nonfiction aligned with curriculum, at a reading level accessible to struggling readers. It uses engaging photographs and illustrations. Background knowledge of subject matter is also incorporated into the text. All vocabulary is defined at point of use. Each title has a clean, clear design that supports readability along with clear, predictable text structures.