This science fair project idea examines which type of insulation holds in the most heat.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Many ancient cultures used the rising or setting sun to create calendars. Observe the setting sun once a week to come up with your own solar calendar!

Determine which kind of rock (igneous, sedimentary, metamorphic) has the greatest reservoir capacity, which is the ability to hold the most oil and natural gas.

In this project students experiment with making music using only glasses of water.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Examine the effect of pressure on carbonation in soda.

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

Discover whether a metal will expand under hot water.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

Teach your child how butter is created by shaking up cream the old-fashioned way.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Start your toy engines -- this is going to be a fast and friction-filled race!

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

Create your own cloud with an activity that will explain how important concepts such as evaporation, condensation, and precipitation work.

This project examines what types of objects burn and which burn faster and cleaner.

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Get your child math and science savvy with this fun outdoor classification game. Using chalk, your child will classify what she sees in the natural world.

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

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Introduce your second grader to the crazy world of static electricity with just a balloon and a sheet of paper.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.