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This science fair project idea investigates the hardness property of minerals.

Use pepper and soap to discover some fun facts about the properties of water.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.