A time zone is a region or area that observes the same standard Time. The world is divided into time zones with each hour difference roughly 15° apart. There are 24-38 time zones in the world ( depending on who you ask).

YouTube video explaining how time zones work

TimeZone trivia quiz for children

International Dateline Movie (interactive)

A brief history of time zones

The science of time

The Trouble with Time

Daylight Savings Time

Daylight Savings Time Explained (video)

Latitude and Longitude (flash)

Map Skills (flash)

Telling Time

Landforms

Continents

Geography Games