Showing Results for clocks

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.