This science fair project compares the allelopathic chemical produced by the Black Walnut tree to a commercial herbicide in stopping the growth of a shrub.

Research basic components of vacuum cleaners, consult vacuum cleaner manufacturers for advice. Design vacuum with attachments that change automatically.

This science fair project idea explores discover whether there are any patterns or trends in the memories between different genders.

How to test for acids and bases? In this activity you and your child can make your own indicator from red cabbage!

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

This science fair project idea produces varying pitches of sound.

Science fair project that measures the relative times it takes a plastic bag and a biodegradable plastic bag to decompose.

Place mushroom caps on poster board, label samples. Check beneath mushroom caps for "prints" of spores. Record and interpret prints left behind.

This fascinating science fair project explores eye color genotypes.

Science fair project that compares the relative carbon dioxide concentrations of various gases, including different types of vehicle emissions.

This science fair project determines which of two chemical agents can be used to release the drug (tea) from hydrogel crystals.

How is NASA able to launch something into orbit around the Earth? Learn about the relationship between gravity, speed, and orbit in space in this cool project!

Explore concepts in current and coltage with these Van de Graaff generator experiments.

Easy and cool middle school science fair project on ripening process of fruits and measures you can take to prevent fruits from rotting and delay ripening.

This project examines whether people's taste perception is influenced by what they see.

Got a young scientist at home? Try this project with him!Create your own molecule design with this home-made clay recipe and some toothpicks!

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

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

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

Can you stain teeth with tea, coffee, or coke? Explore how in this science fair project idea.

In this experiment, you will find out how human error can cause faults in any science task. This includes experiments conducted by famous scientists also.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Check out this fun science project idea to measure the amount of vitamin C in ripe, half-ripe, unripe and stored oranges.

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.

In this science fair project, students evaluate the alleged pain-relieving properties of amber.

Make a periscope with milk cartons and mirrors! This preschool activity is great for playing secret agent and learning simple physics.

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.