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

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

This science fair project examines how seeds hitchhike on animals and clothing.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

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

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

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

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

This project examines whether people's taste perception is influenced by what they see.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

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

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

Find out whether a longer airplane will fly farther or a wider paper airplane.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

This science fair project idea explores the egg's thin membrane.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.