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.

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.

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.

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.

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

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.

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

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

Will the shape of an ice cube impact how fast the ice melts?

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.