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

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Your child will create her own falling snowflakes using white paper and glue them over a tree, so it appears as if they are falling from the sky.

Who knew that you could make beads out of rose petals? Not only can it be done, but the beads smell wonderful!

With a clear bottle and a few plastic straws, you can easily make a hummingbird feeder and demonstrate the effects of atmospheric pressure at the same time!

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

Here is a nifty science experiment using Epsom salts to make "frost" appear on a piece of glass.

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot move in a pattern related to the sound and rhythm of music.

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

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

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

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

This basketball project explores the best way to make the perfect shot every time.

Science fair project which teaches you how to make your own homemade glue by combing curdled milk with baking soda.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

In this activity, your child will make her own "quicksand" to better understand how a substance can be both fluid and solid at the same time.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

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

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

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.

Household items and a bit of imagination will create a CSI kit for your child to have investigative adventures with. Explore the world of forensic science!

Using simple materials found around your home, you can reinforce the static electricity concept by helping your child build a simple device with zapping power!

This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.

Help your own young scientist tackle the wonders of static electricity from the comfort of his own home!

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

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

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!

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!