In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

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 which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Unlike other seed sprouting projects, this one allows kids to compare five different sprouts (either 5 herbs or 5 flowers) by watching them grow in a glove.

Celebrate autumn with a seasonal bash. Welcome the fall with a festive party for your little one and her friends, full of crafts, snacks and fun games.

Let your fabulous crafter use their favorite flowers, fruits and herbs to whip up a delicious perfume that they can proudly present to a friend or a loved one.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This project examines whether people's taste perception is influenced by what they see.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

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

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

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

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

This science project teaches students to classify different shapes of leaves.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.