Time zones presentation: this is a lesson on time zones that I use with my students. Includes a simple 10 question worksheet on time zones in the United States and an optional, somewhat more challenging worksheet on world time zones, where students have to determine what time it is at locations around the world given the current time. Included in the presentation are: Definitions of time zones, the prime meridian, the international date line, and daylight savings timeThe history of time zonesHo