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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.

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.

This science fair project idea experiments with spinning color wheels and optical illusions.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

Find out which kind of bubble wrap fares best when put in impact.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Discover whether cold or hot water from the faucet will boil faster on the stove.

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

This will encourage your child to utilize their observation skills, develop aesthetic awareness, build artistic drawing abilities and learn about the seasons.

Who needs paint, glitter, or crayons when you have natural art supplies right outside your front door?

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

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.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

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 plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Come take off your shoes and explore with your feet. Your child will embark on a barefoot adventure as he plays with different textures.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

In this science fair project you will make a model of a cell membrane using very simple material.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

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

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.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Determine if gender affects the ability to identify different smells.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Construct and experiment with a periscope using reflected light rays to gather an image.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.