Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

In this activity, your kid will watch coal turn into crystals right before her very eyes, and learn some science along the way!

Find out which type of sponge holds the most water.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

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

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

This science fair project idea identifies the properties of soap bubbles and invents a new or improved bubble solution.

Here is a quick experiment you can conduct at the playground to introduce or reinforce the concept of Newton's First Law, The Law of Inertia.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Teach your fifth grader about the wonders of wind by making and observing this winter wind chime.

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

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

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

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

In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.

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 investigates how the height at which a pendulum is released affects the length of time it continues.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

This science fair project idea measures and compares effects of chemical weathering, specifically carbonation, on different kinds of rocks.

This science fair project idea researches the effects of acid rain on plant growth.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

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