Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

The purpose of this science fair project is to build a basic radio.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

In this fun activity, your child will create their very own solar oven to bake s'mores!

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.

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

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

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 an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

Learn how to make marbleized paper with simple everyday ingredients in this fun activity! Your child will learn about oil and water while doing this project.

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

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.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

Believe it or not, the common spud has enough electrochemical energy to power a small digital clock.

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

This science fair project idea experiments with spinning color wheels and optical illusions.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.