Find out which type of sponge holds the most water.

This science fair project idea experiments with spinning color wheels and optical illusions.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

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

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

The goal of this project is to create an exciting topographical map out of dough.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

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

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

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

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

In this activity your child will create their very own marble maze!

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

This science fair project idea determines what household items are good conductors of electricity.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.