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This science fair project idea  provides evidence that air is everywhere and takes up space.

Air Is Everywhere!

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

Invisible Fingerprints: CSI Style!

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old &ldquo;why&rdquo; questions. As you walk with your child, you can encourage them to ask questions.

Inspire Simple STEAM Exploration

This science fair project idea explores whether talking to a plant will help it grow.

Talking to Plants

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.

Gender Probability: Male and Female Chromosomes

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

Retrograde Mode

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Floating Paper Clip

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

How Lefties Write

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

How to Separate Salt from Water

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

Counting Tree Rings

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

How Do Icicles Form?

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

The Mozart Effect

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

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years.  In this science fair project, kids learn how dinosaur tracks were left behind!

Dinosaur Tracks: How Are Fossilized Imprints Formed?

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

Determine the Effect of Gray Water on Plant Growth

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Star Clock

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Mineral Streak

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

Melting Crayons

This project examines whether playing music during class helps students learn or if it distracts students from learning.

Does Music Help or Distract from Classroom Learning?

This science fair project teaches students about wilting and browning of salad greens.

Why Do Greens Turn Brown?

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Specific Heat of Water vs. Specific Heat of Sand

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

How A Kazoo Makes Sounds

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Compost Sorting

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Rust Chemistry: How Does Rust Form?

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

Tensile Strength Test

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

Surface Features of the Moon Model

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

Cleansing Power: How Does Dishwashing Liquid Work?

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Digging in the Dark

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

What is Biodiversity?

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

What Is a Compound Microscope?

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