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Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Demonstrate if cooking destroys all bacteria that is present in raw meats such as salmonella.

Discover which method for odor removal words the best for stifling refrigerator odors.

This science fair project idea examines the differences between bottle water, filtered water, and tap water.

This science fair project idea designs safe bicycle routes using GPS.

This experiment evaluates whether frequent texters have better finger dexterity compared to people that rarely use text messaging.

This experiment investigates whether the primacy effect is observed more frequently in specific populations of people.

Construct a model of radioactive decay. Learn more about radioactive decay by modeling the process using coin flips.

This science fair experiment examines the relationship between gender, age, and smiling.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Find out whether matte or shiny nail polish lasts longer.

Help your child add some flair to the family garden with pencil pinwheels!

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

Examine the effect of pressure on carbonation in soda.

Science fair project that determines what percentage of air is made up of oxygen by examining the chemical reaction between oxygen and rust.

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.

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

The objective of this experiment is to find out if cooked beans grow faster, if at all, than uncooked beans.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

Construct and experiment with a periscope using reflected light rays to gather an image.

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

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

Investigate the kinds of memories we tend to store and the emotions we store with them. Determine if memories have a strong emotional component.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.