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This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

Stir up some enthusiasm for experimentation with this candy-cracking science experiment!

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

This science fair project idea experiments with spinning color wheels and optical illusions.