Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

Demonstrate the capillary function in plants by adding food coloring to glasses of water. Slice stalks of celery and leafy tops. Compare color of leaves

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

A fun, life science sxperiment idea idea involving strategies for keeping birds away from crops using a distress call. What kind of distress call works best?

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

In this design challenge, your child will make a bottle rocket using typical household items.

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

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Science fair project in which you will stage an election campaign to determine whether people are more swayed by a positive ad or negative ad.

Science fair project that creates a pamphlet to help others learn about Epilepsy, its causes, symptoms and treatments.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

Explore the relationship between personality traits and birth order effects.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

This science fair project idea examines the reason boats are shaped and engineered.

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

In this activity your child will create their very own marble maze!

This science fair project idea determines whether dogs can be trained faster using a food reward or praise.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

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

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

Young physicists learn about apparent weightlessnessâthat weird sensation you sometimes feel in elevators, turbulent airplanes, and roller coasters.