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

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

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

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

In this activity, your child will make her own "quicksand" to better understand how a substance can be both fluid and solid at the same time.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

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.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

This science fair project idea examines the reason boats are shaped and engineered.

Teach your child how butter is created by shaking up cream the old-fashioned way.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

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

Discover how and which salt melts ice the quickest.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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 experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

This science fair project idea explores the different properties of matter.