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

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

This science fair project idea investigates the difference in reaction times between boys and girls.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Cleaning can be a chore, but not with this sudsy experiment!

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

This science fair project teaches students about wilting and browning of salad greens.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

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 science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.