Make Your Own Star Clock -- [ Kids/Teens/Mature Teens ] - Learn how to tell time by finding constellations in the night sky. Visit

The Galileo Project - Pendulum Clock -- [ Teens/Mature Teens ] - Describes Galileo's work on pendulums & the pendulum clock. Visit

International Standard Date & Time Notation -- [ Mature Teens ] - International Standard ISO 8601 specifies numeric representations of date & time. It helps to avoid confusion caused by the many different national notations. Visit

When Does Daylight Savings Time Occur -- [ Teens/Mature Teens ] - Explanation of when & why we have daylight savings time. Visit

Making a Sun Clock -- [ Kids/Teens ] - Before there were clocks, people used shadows to tell time. Learn how to make your own sun clock! Visit