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What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

This science fair project idea investigates how the shape of an object affects drag.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

This classic children's game demonstrates how sound travels through air vs. through a solid.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

This project determines what category of person is most likely to be ticklish.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

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

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Science fair project that examines condensation and the conditions needed in order for dew to form.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

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

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

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

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.

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

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

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

Start your toy engines -- this is going to be a fast and friction-filled race!