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How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

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

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.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

Explore the chemistry of latex polymers with this outrageous, hilarious science activity.

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.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

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.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

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

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.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

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

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

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

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.