What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

In this science fair project caffeine will be extracted from Gunpowder Green Tea, illustrating the isolation of a naturally occurring product from a plant.

Check out this fun science fair project idea to learn how alkaline batteries convert chemical energy to electrical energy?

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

Use a dichotomous key to identify plants or animals.

Enjoy those warm spring and summer nights with your child while teaching some basic astronomy at the same time.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

Give your local birds a treat — and your young birdwatcher some fun — with this simple DIY bird feeder.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

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

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

This middle school project examines the strength of horizontal versus vertical pointing eggshells.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

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.

Discover whether eating certain foods will make you smell (not only bad breath) but through skin cells.

It's easy to plant your own in-home container garden! This planter contains pizza-themed herbs and is a perfect early gardening activity for kindergarteners.

This project examines the concentration of dissolved oxygen in water, with and without oil.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

This experiment provides a graphic illustration of the chemical reaction that occurs when you activate a hand warmer.

This science fair project idea explores the different properties & interactions of sugar molecules.

This experiment will test whether people are better auditory or visual learners and if there is a link between gender and either of these learning types.

Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

This experiment evaluates if people have an accurate perception of how much personal time they spend interacting with technology.

Learn how different types of soil affect how animal tracks form in this experiment!

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.