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In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Science fair project in which you will start a fire from scratch without using matches or a lighter.

The purpose of this science fair project is to build a basic radio.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

This science fair project idea produces sounds by creating vibrations using different objects.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

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

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

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

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

Discover whether cold or hot water from the faucet will boil faster on the stove.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Take a dive into the candy jar with this yummy science experiment.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

In this science fair project, students create their own miniature salt flats at home.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

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 produces varying pitches of sound.

This project examines whether people's taste perception is influenced by what they see.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!