Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

This project tests the hypothesis that dark colors absorb more heat than light colors.

In this experiment, the weight of aluminum cans will be compared.

In this project, different brands of microwave popcorn are tested and compared.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

The objective of this science fair project is to investigate salt water density.

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

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

This science fair project idea explores alcoholic fermentation at work by making your own soda.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

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

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

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

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

In this science fair project, students create their own miniature salt flats at home.

In this science project, the center of gravity is explored.

In this project, waves of vibrations are experimented with using water in glasses.

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

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

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

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

How clean is the air we breathe? The answer might surprise you. Learn how to investigate local air quality with this cool science fair project.

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

Science fair project that examines condensation and the conditions needed in order for dew to form.

The project investigates how friction affects motion by using different surface textures.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

This science fair project idea investigates whether air has mass and weight.