This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

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.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

This science fair project idea investigates the difference in reaction times between boys and girls.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

This basketball project explores the best way to make the perfect shot every time.