Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

This science fair experiment idea's objective is to understand the general concept of an acid and a base.

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

The science project fair idea explores the interaction between your nose, mouth, and brain when tasting a new food or drink.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

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

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

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

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

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

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.

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

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

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

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.