What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

This science fair project idea explores the different properties & interactions of sugar molecules.

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 it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

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.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

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

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!

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

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

This science fair project idea investigates whether plants can survive being frozen.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

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

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!