What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

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

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

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!

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

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

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

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

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

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

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

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.

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.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.