Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

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

In this project students experiment with making music using only glasses of water.

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!

Do different types of oil mix or stack? Find out in this science fair project idea!

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

Learning about how plants grow is a building block in the early grades science curriculum. Put a fun twist on this life science concept with these cup monster friends!

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

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

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

What happens when colored beams of light mix? You might be surprised.

Science isn't ho hum anymore when it involves building catapults to teach your fifth grader about projectile motion.

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

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

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

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

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

Science fair project in which you will start a fire from scratch without using matches or a lighter.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Hatch a praying mantis egg case in a homemade habitat with your child's help! This is an amazing experiment in science and nature for kids of any age.

Stir up some enthusiasm for experimentation with this candy-cracking science experiment!

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

This science fair project idea explores whether color affects a person's emotional state.

Introduce your child to the amazing, almost magical phenomenon of static electricity!