This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

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

This science fair project teaches students the differences between fruits and vegetables.

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

This science fair project idea produces sounds by creating vibrations using different objects.

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

Examine the effect of pressure on carbonation in soda.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

This science fair project idea identifies trees using a dichotomous key.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

The goal of this project is to create an exciting topographical map out of dough.

This tricky building block challenge asks your learner to think creatively. They will work on their divergent thinking skills as they try to fill up an index card perfectly with building bricks.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Help your child plant a "tea garden": a garden made of herbs for making teas.