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

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

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

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

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

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

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

Try this chemistry experiment with your curious kid and get some "shocking" results!

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

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

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

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

Teach your kids about entropy with this fun, easy exercise, and teach your money to dance while you're at it!

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

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.