Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

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

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

In this science fair project, students use the streak test to tell minerals apart from each other.

How powerful is the reaction between baking soda and vinegar? Find out here!

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This science fair project idea demonstrates that plants give off water.

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

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

This science fair project teaches students the differences between fruits and vegetables.

This science fair project idea investigates the difference in reaction times between boys and girls.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

This science fair project idea explores whether white light can be separated into different colors.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!