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What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Discover whether a metal will expand under hot water.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Do different types of oil mix or stack? Find out in this science fair project idea!

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.