What do calves grow up to be? Cows! Readers will learn how baby animals grow into adults as they are introduced to life cycles. Simple callouts ask the student to think in new ways, supporting inquiry-based reading. Titles in the 21st Century Beginning Library introduce students to vocabulary and content they will use for a lifetime as they are prompted to Look, Think, and Connect. Let your young readers discover the joy of reading for information as they grow into lifelong, fluent readers.