This science fair project idea explores the egg's thin membrane.

This science experiment has students test whether a snail moves faster on concrete or dirt.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

This classic children's game demonstrates how sound travels through air vs. through a solid.

This project determines what category of person is most likely to be ticklish.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

This science fair project idea determines which method of hand cleansing is the most effective.

This science fair project idea explores how length affects the weight a bridge can hold.

Explore if planting seeds in a certain direction will affect how fast it germinates.

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

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

This science fair project examines how seeds hitchhike on animals and clothing.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

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 investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science fair project idea examines which type of insulation holds in the most heat.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Using a toy race car kids create a visual model of the Doppler Effect.

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

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 investigates how the height at which a pendulum is released affects the length of time it continues.