Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

This experiment will determine how different kinds of light affects the strength of bakerâs yeast.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

This experiment explores how microwave radiation affects fungi, bacteria, and plant life.

This science fair project idea discovers whether plants grow best in chemical fertilizer, organic fertilizer, or with no fertilizer at all.

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

This experiment evaluates if people have an accurate perception of how much personal time they spend interacting with technology.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

The objective of this science project is to determine the length of time for different seeds to germinate.

Plants and light seem to be good buddies, but how far does the friendship really go?

Check out this fun science fair project idea to learn about seismic waves and how fast they travel during an earthquake.

How does light affect plant growth? Do different colors of light work better than others? Find out in this classic science fair project idea.

Kids grow sunflower greens from seeds for a hands-on gardening experience in this kindergarten life science activity.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

How much gas is released into your stomach by your favorite beverages? This project examines which beverages produce the most gas.

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

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

This first grade science activity brings the green grass of early spring inside while teaching your child about the cycles of growth.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

In this activity, your kid has your permission to get his socks nice and filthy. In fact, it's a necessity, because those socks are going to make a garden.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.