Use a dichotomous key to identify plants or animals.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

Determine how we can separate the components of a solution

In this activity, your kid will watch coal turn into crystals right before her very eyes, and learn some science along the way!

Science fair project that cultivates slime mold and monitors the stages of its development.

Use a fish tank to simulate a pond! This science fair project explores the relationship between acid rain and the dissolved oxygen concentration of water.

Learn about the greenhouse effect- and get great science fair experiment ideas. Read more.

Science fair project about different digital image file types, compares different encoding algorithms used to compress the data.

This science project examines the effectiveness of various types of laundry detergents on stains trapped on a white handkerchief.

Science fair project that uses iodine solution to demonstrate how starch is turned into sugar when it is chewed in the mouth.

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

Plants help keep a house cool! This article includes step-by-step instructions for completing this fun and interesting science experiment.

There are hundreds of properties in rocks which you can describe, so get your geology goggles on and get ready to rock your child's science skills.

This science fair project idea explores how length affects the weight a bridge can hold.

This science fair project idea explores whether dry ice will cool a beverage faster than wet ice.

Science fair project that helps you create your own compost pile in order to test the efficiency of different methods of composting.

Got a young scientist at home? Try this project with him!Create your own molecule design with this home-made clay recipe and some toothpicks!

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

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.

Give your child a chance to experiment with how things grow. And throw in something extra to up the fun factor even more...her very own grass pet!

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

This science fair project determines if the allelopathic chemical produced by the black walnut tree biodegrades immediately or persists over several days.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

How can you tell the difference between a spider and an insect? Your child will find out as he makes a tray of yummy creepy crawly snacks.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

In this science fair project idea, kids make water dance on the surface of a hot pan with the Leidenfrost Effect.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.