Evaluate the ability of a biodegradable dish detergent to increase the penetration of water in hydrophobic soils.

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

In this science fair project, young children notice and track changes in trees throughout the year.

Polymers remove oil from contaminated waters. The purpose of this science project is to test the effectiveness of a polymer in cleaning up an oil spill.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

This project analyzes people's emotional responses to images in painting vs similar images in photographs.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

Explore the concept of receptive fields and why different parts of our body have different levels of sensitivity.

Thermometers are how we measure temperature, and we've all heard the terms "centigrade" and "Fahrenheit" tossed around, but what do they really mean?

Kids will enjoy this cool demonstration of Newton's Third Law and the conservation of linear momentum.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

Looking for a project on machines? Get a fun elementary school science fair project idea to design a compound machine using your knowledge of simple machines.

What colors can dogs see? Do they only have black and white vision, or can they see other colors too? Find out in this cool science experiment!

This science fair experiment examines the relationship between gender, age, and smiling.

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

In this project, you'll create Oersted's experiment, which relates to how electric currents create magnetic fields.

.Have you ever had problems with your wifi signal strength? In this experiment you will learn about how wireless signals pass through the air and solid objects.

This science fair project idea determines whether the diet and taste preferences of humans relate to their personality.

In this science fair project, high school students will try to determine the mathematical patterns in JS Bach's two movement preludes and fugues.

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

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

In this activity, you child will learn about how heat changes food. On the next sunny day, head outdoors to make a treat in an outside oven! Here's how:

Check out this hot project idea to culture bacteria and determine if the claims about the anti-bacterial properties of curry and cinnamon are true.