The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

This science fair project idea determines whether eating before or after exercise is more beneficial to health and performance.

Is exercise a cellular activity? Check out this fun science fair project idea to compare the carbon dioxide production before and after exercise.

This science fair project idea studies whether eating a hearty breakfast before and exam will get them better test scores.

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

This two-ingredient dough, sometimes called "moon sand," is a quick and cheap way to let kids explore their senses, build fine motor skills, and play.

This science fair project evaluates if and how eating a large meal affects ability to perform mental tasks.

Before digital cameras, before Polaroids, there was the original pinhole camera. Build a pinhole camera and see what true vintage photography looks like!

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

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

Assess physical and mental states of subject before and after drinking coffee. Compare initial expectations with their reported conditions.

Take a closer look at the soil that surrounds us, and give your child a lesson in Geology 101!

Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

In this activity, your kid will watch coal turn into crystals right before her very eyes, and learn some science along the way!

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

It's the day before the test, and you still have a ton to memorize! Sound familiar? Test memorizing techniques to help yourself out next time.

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

Research active ingredients in anti-aging creams. Test skin creams on volunteers, document the effectiveness of the creams with before an after photographs.

This science fair project idea discovers the average number on the Scoville scale that humans can endure in hot peppers before physical signs kick in.

Study the effect of music on blood pressure. Compare blood pressure readings before and after the listening session. Analyze results, write a detailed report.

Before your treat your child (and yourself!) to a yummy snack, help her learn a little about Sir Isaac Newton's First Law of Motion!

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

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.

This project compares the strength of one, two, and three-ply toilet paper.

Boost your preschooler's attention to detail by getting her to explore the differences between two different pumpkins: large and small.

Did you ever think you could make colors disappear right before your eyes? This science experiment is just like a magic trick: now you see it, now you don't!

In this project, you will observe and record changes in sunspots over two weeks.

Did you ever drink spoiled milk? Find out whether whole milk spoils at the same rate as 2% and skim milk.