This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

This adventurous art project will send kids on a scavenger hunt for fall materials they can use in their artwork. This craft also teaches kids about seasons.

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.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

In this science fair project, students use the streak test to tell minerals apart from each other.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

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

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

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

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

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.

This fun activity makes use of pasta shells, paint, and glue make a crab while your child learns about this unique creature.

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

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

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Is our water polluted? Help your young scientist understand the importance of taking care of the environment with this simple experiment.

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

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

This science fair project idea examines the reason boats are shaped and engineered.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

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