Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

Make a backbone model to explore human anatomy and life science.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

This science fair project idea investigates if fats add to the flavor of food.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

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.

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

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.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

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.

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

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!

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

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