This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

This super fun science project, perfect for young children, combines crafts, dressing up as animals, outdoor play, and life science learning.

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

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

Make this easy composting dessert and then enjoy the yummy results!

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

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

This science fair project idea examines whether people can decode scrambled messages.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Determine whether fresh vegetables have more calories or less calories than canned vegetables.

This science project challenges students to take learned information about weather and climate control and apply it to come up with creative ideas of their own.

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

Discover whether cheap saline solution bottle cleans and disinfects just as well as more expensive kinds formulated with different ingredients.

With this activity, not only will you be experimenting with giving accurate information, you'll also teach your child how to write good scientific procedures.

Observe if dissolved aspirin will help plants grow healthier and faster in this science fair project idea.

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!