Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

This science fair project idea explores whether color affects a person's emotional state.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

This project explores ways to prevent static electrical shocks.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Construct batteries that make electricity from fruits with this fun science fair project.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

This classic children's game demonstrates how sound travels through air vs. through a solid.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

In this science fair project, students create their own miniature salt flats at home.

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

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

In this science fair project, students make their own rain gauge to measure rainfall.

This science fair project idea determines what household items are good conductors of electricity.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

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

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

This science fair project idea determines what household items are good conductors of electricity.

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

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.

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.