Ace enters a mountain bike race in this fast-paced, STEM-themed early reader! Pick a book. Grow a Reader! This series is part of Scholastic's early reader line, Acorn, aimed at children who are learning to read. With easy-to-read text, a short-story format, plenty of humor, and full-color artwork on every page, these books will boost reading confidence and fluency. Acorn books plant a love of reading and help readers grow! Ace...