In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

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

Test your friends to find out if you can replicate the placebo effect's incredible results.

Do you think heat can affect a plant's growth rate?

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

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

How powerful is the reaction between baking soda and vinegar? Find out here!

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

This science fair project idea explores whether talking to a plant will help it grow.

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.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

This science fair project idea explores how length affects the weight a bridge can hold.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

This project determines what category of person is most likely to be ticklish.

Is it a square or a circle? See if you can trick your friends with this zany science project!

Science fair project that examines condensation and the conditions needed in order for dew to form.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

This science fair project idea compares biodiversity between drops of water.

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

This science fair project idea investigates how color affects temperature.