In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

This science fair project idea produces varying pitches of sound.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

Learn with makes water molecules work with this fun and easy science activity!

In science fair projects, middle school students discover why nitrogen fixing bacteria are important to plant growth.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

Are you looking for an out-of-this world activity that's both fun and educational? This solar system garland is a great way to introduce your child to astronomy.

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

This science fair project idea explores the different properties of matter.

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

This project examines Newton's First and Second Laws of Motion with a bicycle and water balloons.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

This simple experiment serves as an introduction to the greenhouse effect.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

This science fair project idea identifies trees using a dichotomous key.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.