Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

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

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

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

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

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

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

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

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

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

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

An home science experiment for older students that teaches about the science behind heat.

Teach your child how butter is created by shaking up cream the old-fashioned way.

Your child can explore the wonders of science, and the concept of dehydration, along with creating a healthy and tasty treat!

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

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

This science fair experiment idea's objective is to understand the general concept of an acid and a base.

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

Making your own glass cleaner is easy, effective and inexpensive!

Learn whether writing things down really makes things easier to remember.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

In this science fair project, students make their own rain gauge to measure rainfall.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.