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Determine which metal has the highest rate of conductivity.

This experiment investigates the relationship between the temperature of a candle and its burn rate.

Demonstrate how to tell the age of an egg without having to crack it open.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

This science project teaches students to classify different shapes of leaves.

In this experiment, recycled objects are separated to demonstrate how mixtures are made and the variance in the physical properties of their ingredients.

The objective of this science fair project is to observe the properties of friction and apply this knowledge to search for a near-frictionless surface.

This fun elementary school science fair project idea helps students in designing an amusement park using their knowledge of forces and simple machines.

Study history of aerodynamics of arrow design to create a perfect arrow. Test arrows by shooting at an archery target.

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

The objective of this science fair project is the compare the rate and efficiency of disaccharide and polysaccharide fermentation by yeast.

Find out whether people within a family tend to have matching fingerprints.

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

In this experiment, you will be making your own paper flashlight by conducting electricty with graphite.

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

Looking for a fun earth science project on continental drifts? Check out this fun science fair project idea to explore how Pangaea may have broken up.

The goal of this science fair project is to attempt to build a perpetual motion machine and analyze the Laws of Thermodynamics.

The goal of this science fair project is to investigate the effect of irradiation on the germination and growth of vegetables, such as the tomato plant.

Determine how we can separate the components of a solution

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

Place mushroom caps on poster board, label samples. Check beneath mushroom caps for "prints" of spores. Record and interpret prints left behind.

This science project challenges students to study the salt content in tap water and learn about electrochemistry.

Find out whether matte or shiny nail polish lasts longer.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

Find out whether freezing or refrigerating destroys more bacteria. This is essential to consuming safe and germ-free food.

Do suds equal more clean or does a sud-free cleaning agent works just as well or even better?

The purpose of this science project is to determine whether the amount of air in a soccer ball affects how far it goes when kicked.

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