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Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

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

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Take a dive into the candy jar with this yummy science experiment.

This science fair project idea experiments with spinning color wheels and optical illusions.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

In this experiment you will replicate the mummification process by making a hot dog mummy.

This science fair project idea investigates how magnetism can defy the force of gravity.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

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

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

This science fair project idea examines whether boys and girls differ in reflexes.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

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

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!