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This science project allows students to study the psychology of happiness.

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

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

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

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

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

This biodiversity project examines the biodiversity in your own backyard.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

Examine the effect of pressure on carbonation in soda.

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

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.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

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

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

This science research project challenges students to think of more effective lobster farming methods.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Use pepper and soap to discover some fun facts about the properties of water.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

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 makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

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

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.