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.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

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

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.

Discover whether cheap saline solution bottle cleans and disinfects just as well as more expensive kinds formulated with different ingredients.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

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

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

Research active ingredients in anti-aging creams. Test skin creams on volunteers, document the effectiveness of the creams with before an after photographs.

Study the impact of environment on seed germination among three materials: soil, paper towel, and cloth. Note when seeds germinate and how well they germinate

This science fair project idea shows kids how to grow mold and whether mold grows better in dry or moist conditions.

A fun, life science sxperiment idea idea involving strategies for keeping birds away from crops using a distress call. What kind of distress call works best?

Research information on vitamin content in foods, Examine the effect of vitamins, test organic samples of fruits, meats, grains for vitamin content.

Science fair project that examines how cell membranes allow the inward and outward flow of materials as demonstrated by eggs.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Are you ready to pilot your own airplane? Well, then take to the skies with this high-flying project!

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Test whether spot magnets can help improve the symptoms of an injury.

This science fair project studies which color(s) of flowers butterflies & bees are attracted to and if color plays a role in flower selection for pollination.

Administer IQ tests to volunteers. have one group practice typical IQ test problems. Then compare results of the two groups.

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

This fun middle school science fair project idea explores the process of respiration and determines whether boys and girls have the same lung capacity.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.