This science fair project teaches students the differences between fruits and vegetables.

This science fair project idea investigates the difference in reaction times between boys and girls.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

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.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

This science fair project idea explores whether white light can be separated into different colors.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

This science fair project idea determines the most effective method of preserving food.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Construct and experiment with a periscope using reflected light rays to gather an image.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Examine the effect of pressure on carbonation in soda.

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

This science project teaches students to classify different shapes of leaves.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

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

This science fair project idea investigates how color affects temperature.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.