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.

This project compares the strength of one, two, and three-ply toilet paper.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

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.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

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

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

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

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

This season is a great time to explore the many shapes, sizes, and species of evergreen trees. Download our "field guide" activity and learn more!

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

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

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

This science fair project idea investigates whether plants can survive being frozen.

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

In this design challenge, your child will create a parachute for a small toy using typical household items.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

Cherries usually burst with flavor, but in this science experiment they burst with osmotic pressure. This science activity will blow your curious kid's mind!

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

In this project students experiment with making music using only glasses of water.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

This science fair project idea examines which type of insulation holds in the most heat.