View Spread Why Do the Seasons Change? Explains the four seasons and why they occur. Describes the Earth's revolutions around the sun and the tilt of the Earth's axis. RL Grades 3 IL Grades 3-5 Details: Product type: Paperback Book ISBN: 978-0-7614-3367-5 Author: Melissa Stewart Copyright: 2008 Reading Level: Grade 3 Interest Level: Grades 3-5 Paperback Book — $9.23 / $7.85