How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

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

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

Learn whether writing things down really makes things easier to remember.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Find out whether packaged seeds actually do expire in this new science fair project idea.

This science fair project idea explores substances that cause a bubble to last longer.

This science fair project idea determines if the color of light affects the growth of plants.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

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

In this CD hovercraft science project, students will construct their own DIY hovercraft.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

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

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.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

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

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.