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Every time a sound is produced it emits a sound wave. This experiment demonstrates how sound travels, using nothing more than a spoon and a string!

This simple activity is not only fun, it's also a useful way to organize children's closets — and offer kids some autonomy to boot.

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 does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

Young physicists learn about apparent weightlessnessâthat weird sensation you sometimes feel in elevators, turbulent airplanes, and roller coasters.

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

Develop your child's green thumb with this easy planting activity. These plants are guaranteed to grow fast and are "brown-thumb" proofed!

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

Is it a square or a circle? See if you can trick your friends with this zany science project!

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

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

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Use a microscope in this experiment to learn about different kinds of "good bacteria" that turn milk into yogurt!

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

In this science fair project, students use hot and cold water to simulate what happens when a warm front meets a cold one.

Salmonella and E.coli are common food contaminates. This experiment measures the time it takes for E.coli and Salmonella to reach hazardous levels in fish.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Summer is a great time to work on pre-kindergarten skills that will serve your child well in her first year at school, while having some fun in the sun!

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!