Build young readers' vocabulary knowledge with these exciting, new nonfiction readers! This series introduces young, inquisitive readers to a broad range of science and social studies topics while building and strengthening their content-area vocabulary. Full-color photographs illustrate how animals are born, grow, and change; how some animals live and survive in their habitats, and how animals are classified. Other titles explore each planet, the seasons and weather patterns, and the different helpful roles people play within their communities. This series also highlights inventors, explorers, and scientists.