This math and social studies worksheet is designed for third, fourth, and fifth graders and aims to teach them how to calculate time differences across time zones. It includes a map of the United States divided into four time zones: Pacific, Mountain, Central, and Eastern. By using the map, students will learn how to determine the time in one time zone based on the time in another and will also identify the time zone they live in. The worksheet provides an easy-to-follow introduction to time zones and time differences.