No Prep Sub Plans: Time Zones Research + Group Project | Build a Global Clock Guide Grades 5–8 Help students understand how the world stays connected through time zones with this engaging, real-world geography and research project! In this collaborative middle school activity, students explore how Earth’s rotation connects to time zones, UTC/GMT, daylight saving time, and global scheduling. Working in groups, students research world cities, compare time differences, solve real-life scenarios, an