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This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Can Crystals Show Color Mixing?

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

Discovering the Best Water for Plants

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

Growing Crystals

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

Building a Simulated Volcano

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

A Single Movable Pulley and Mechanical Advantage

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Color and Heat Absorption

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

The Growth Rate Of Pre-packaged Seeds vs. Seeds From Directly Inside the Fruit or Vegetable 

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

Exploring Soil Sandwiches

How powerful is the reaction between baking soda and vinegar? Find out here!

Baking Soda and Vinegar Balloon

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Turtle Habitat

In this science fair project, students create their own miniature salt flats at home.

Create Your Own Miniature Salt Flats!

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

How to Make an Anemometer

This science fair project examines how seeds hitchhike on animals and clothing.

How Do Seeds Hitchhike?

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

What Lives in the Air Conditioner?

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

How Do Weather Conditions Affect How Fast a Puddle Evaporates?

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

The Psychology of Feeling Watched

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

Erosion Experiment

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Animal Vision: Ocelli, Compound Eyes, and Camera Eyes

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Simple Machines

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

The Effect of Heat on Rubber

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Water Salinity

Science fair project that examines condensation and the conditions needed in order for dew to form.

Dew Point, Humidity and Weather

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

Light Absorption and Color Filters

Hold a magnet marathon! Explore the power of magnets with your kindergartener in this entertaining and simple science game.

Have a Magnet Marathon!

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Cats & Dogs

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

Halloween STEM Building Challenge

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

How do Plants Absorb Water?

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

The Photosynthesis Process and the Importance of Leaves

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Principles of Air Pressure

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

Nice Shades! How Light and Color Affect Sight

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