Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

This science fair project idea investigates the hardness property of minerals.

This science fair project idea investigates if fats add to the flavor of food.

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

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

This classic children's game demonstrates how sound travels through air vs. through a solid.

Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

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

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

In this experiment you will replicate the mummification process by making a hot dog mummy.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

In this project children practice the scientific method while playing with puffy paint.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

This science fair project idea explores how length affects the weight a bridge can hold.