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In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

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

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

What's a crater, and how does it happen? Here's a kindergarten experiment with safe, nontoxic ingredients.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.

Every time a sound is produced it emits a sound wave. This experiment demonstrates how sound travels, using nothing more than a spoon and a string!

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

This project examines whether people's taste perception is influenced by what they see.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

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

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.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

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.

The next time you and your fifth grader go on a hike, take along this key to figure out which common North American animal left a track along the river bank.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Here's a fun activity that will have your child researching, collecting, and charting plant specimens from the neighborhood.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

If your child aspires to be the next Frank Lloyd Wright, we've got some tips on building sand castles that last.

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

Who knew that you could make beads out of rose petals? Not only can it be done, but the beads smell wonderful!

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Lead your first grader on a nature walk ... with a scavenger hunt-style twist! They'll try to capture photos that correspond to paint chip colors.