Check out this fun science fair project idea to explore fun facts about fruit juices and learn why do juices turn bad in the fridge.

In this science fair project, students examine how temperature affects sugar transport within a plant.

This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

The project researches how lubricants affect the mechanical advantage of a pulley.

Science far project which determines whether the material of a baseball bat affects the distance that the baseball will travel.

The purpose of this science project is to determine which stimulus, gravity or water, will cause the greatest growth response in a plant.

Your mission, if you choose to accept it, is to construct a parachute that will deliver an egg safely to the ground. Good luck!

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.

In this science experiment, test the pH of soil surrounding a gas station to determine if gas stations have a negative effect on the environment.

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.

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

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

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

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.

Your kindergartener will make prints of his favorite fruits and vegetables and learn how to organize and assemble his very own book.

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

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.

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

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

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.

Try this simple activity with your middle schooler to help him develop an understanding of why scientific classification systems exist and how they work.

Here's how you and your teen can stage your own formal debateâbeyond arguing why chores are unethical! Formal debates improve teens' critical thinking skills.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.