Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

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.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

The purpose of this science fair project is to build a basic radio.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

This science fair project idea researches the definition of ‘biodegradable’ and explores this in a real-life setting.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

In this project, a magnet is used to collect iron from breakfast cereals.

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

In this project, different childproof containers are tested to see how childproof they really are.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

The project determines which laundry detergent is best for cleaning clothes.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

In this project, the affects of vitamin E are observed on a rose petal.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

In this project, vinegar and salt act as preservatives keeping bacteria from growing in the bouillon mixtures.

The project is to investigate yeast fermentation and its results on hand of latex balloons.

The project examines absorbent polymers absorbency in disposable diapers and their unique ecological problem to the environment.

In this project, the fingerprints of family members are compared to determine if people from the same family have similar fingerprints.

This project examines whether playing music during class helps students learn or if it distracts students from learning.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

This science fair project idea observes products available in the school cafeteria and waste produced by these products.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

This science fair project has kids conduct a blindfolded taste test to determine how smell influences our ability to taste foods.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

This science fair project idea researches the effects of acid rain on plant growth.