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.

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

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

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

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.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

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

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 compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

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.

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.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

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

Science fair project which teaches you how to make your own homemade glue by combing curdled milk with baking soda.

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

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

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

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

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.