4th and 5th Grade Physical Science Resources

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

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

This science fair project idea explores whether talking to a plant will help it grow.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.