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This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

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

Try hammering some plants with your kids to teach them a valuable lesson in flower science while making beautiful artwork in the process!

This biodiversity project examines the biodiversity in your own backyard.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Using scherenschnitte, your science-savvy second grader will be able to create and display each part of a vegetable!

In this experiment we will be determining whether birds prefer certain colors of seed.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

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

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 classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

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 simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

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

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

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.

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

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Planning a beach vacation? Here's a cool nature craft you can make in the sand with your child.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.