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This experiment explores the most common colors that appear among a sample of crossbred guppies.

Check out this cool middle school science fair project idea to determine if shopping carts are really carriers of harmful bacteria.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

Use a microscope in this experiment to learn about different kinds of "good bacteria" that turn milk into yogurt!

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

This project examines the vulnerability of fruit flies, Drosophila melanigaster, to irradiation. Will exposure result in mutations?

The objective of this experiment is to evaluate the effects of acid rain on plants.

Discover whether a metal will expand under hot water.

In this experiment you simulate radioactive decay in order to gain an understanding of the basics of half-life.

This interactive project invites science fair-goers to participate in examination and recording to demonstrate the importance of firsthand observation.

In this activity, your student will be invited to build a chair out of building blocks that is designed to meet the specific size and shape of a small doll or toy figure.

This experiment will explore how mallets of various materials and weight create sonic tones of varying lengths.

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

More height, more steep, more speed! This science project investigates whether there is a correlation between the height of the roller coaster and the slope.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

This science fair project idea determines whether eating before or after exercise is more beneficial to health and performance.

Compare different remedies for cooling the mouth after eating spicy food.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

This experiment will evaluate if the environments that people work in affect their speed and accuracy in performing mental tasks.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Show your middle schooler how a quick whirl of spinach in the blender will reveal the cobwebby "stuff"--or DNA--of life!

We're all familiar with the idea that some songs âget stuck in your head.â This experiment explores the validity of that claim.

This experiment observes inattentional blindness and investigates whether certain age groups or genders are more likely to demonstrate this phenomenon.