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Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

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

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?

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

How do organic materials become soil? This science experiment measures what materials biodegrade.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

This science fair project idea explores how length affects the weight a bridge can hold.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

How powerful is the reaction between baking soda and vinegar? Find out here!

This science fair project explores how osmotic pressure forces water through the root up into the plant.

This science fair project examines how seeds hitchhike on animals and clothing.

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

Will increasing the amount of salt in water effect how slow or fast the water freezes?

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Do you think heat can affect a plant's growth rate?

Cleaning can be a chore, but not with this sudsy experiment!

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.