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

This science fair project idea determines the most effective method of preserving food.

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

This science fair project idea produces varying pitches of sound.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

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

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

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!

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

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.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

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.

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

In this project, a model of a submarine is built to simulate the buoyancy and displacement of water and air.

This science fair project idea teaches to understand and explore the concepts of crystal formation and dissolving substances.

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.

This science fair project idea determines the probability of a coin landing heads or tails.

In this project, the affect of acid rain is simulated by the acid, vinegar.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

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 will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

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

In this science fair project, students make their own rain gauge to measure rainfall.

The project determines which type of birds prefer which type of birdseed.

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

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.