In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

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

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

Determine if each hemisphere specializes in dealing with specific functions. Include illustrations of the brain, it hemispheres.

This science fair project examines how carnivorous plants digest insects, and whether the plant can use nitrogen in the soil to compensate for lack of insects.

In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

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

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

What happens when light hits a hard surface? Find out by conducting a simple light reflection experiment with your preschooler.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

This science project examines the thermal properties of several major greenhouse gases.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

Who needs paint, glitter, or crayons when you have natural art supplies right outside your front door?

This fun activity makes use of pasta shells, paint, and glue make a crab while your child learns about this unique creature.

Show your teen how to analyze the nutritional value of her favorite meals. She may be surprised to find out how healthy--or not--her favorite foods are!

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

Explore whether pianists have the tendency to type faster than non-pianists.

In this science fair project, students use the streak test to tell minerals apart from each other.

Invite your kindergarten marine biologist to practice in scientific identification and categorization while creating a lovely treasure box.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

Science fair project which compares the rates of photosynthesis for various light sources. Which type of light will be best for photosynthesis and why?

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

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

This simple experiment serves as an introduction to the greenhouse effect.

Make edible amber fossils with your second grader to explore the fascinating world of science!

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

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