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This experiment examines whether social orientation (extroversion or introversion) is correlated with memory.

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

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

Science fair project which measures the amount of heat energy released by a burning candle by calculating how many calories of heat it emits.

Kids learn how fiber optics work with a dramatic total internal reflection experiment using a fish tank, water, and a laser pointer.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Science fair project that determines which materials cause the most friction by sliding blocks of wood down a ramp.

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

The project researches how lubricants affect the mechanical advantage of a pulley.

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

Become familiar with ratios and learn how to measure the diameter of the Sun and the Moon in this fun science fair project idea.

This science fair project idea determines what household items are good conductors of electricity.

Demonstrate which cooking method gets rid of the most fat.

In this wind tunnel experiment, you'll make a wind tunnel to test lift and airflow on a model plane and explore aerodynamics and the Bernoulli Principle.

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

Check out this cool and free middle school science fair project idea on how to make a solar oven.

Explore the neural and mental mechanisms at play in mental imagery.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

This science fair project demonstrates the "power of conformity".

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

This fun middle school science fair project idea helps student discover the concepts behind deep sea diving and how Cartesian divers work.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

This science fair project determines if the allelopathic chemical produced by the black walnut tree biodegrades immediately or persists over several days.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.