This science fair project idea identifies trees using a dichotomous key.

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

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.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

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.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

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!

Use pepper and soap to discover some fun facts about the properties of water.

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

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

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.

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!

Plants and light seem to be good buddies, but how far does the friendship really go?

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

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