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This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

Determining the Ages of Trees

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

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

Invertebrate Ecology

This science project teaches students to classify different shapes of leaves.

Shapes of Leaves

This science fair project teaches students the differences between fruits and vegetables.

Is it a Fruit or a Veggie?

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

The Wonderful World of Weeds

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Rats!

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Creatures That Bug Us

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

True or False? The Lying Experiment

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

Six Degrees of Separation 

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Fungi Biodiversity

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

Cricket Behavior

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Potato Chip Science: How Greasy Are Your Potato Chips?

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Does Storing Cucumbers and Tomatoes in the Fridge Spoil Its Unique Flavors?

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Changing the Period of a Pendulum

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

Is There a Relationship Between Tempo and Genre?

This project investigates the affect of storage temperature on microwave popcorn.

Where Should You Store Your Popcorn?

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

What Do Ants Eat?

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

Building Brick Challenge: Build a Tall Tower

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 experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

How Strong are a Bird's Bones?

This science fair project investigates why the number of visible stars changes from place to place.

Stars In The Sky

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

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Don't Rock the Boat

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

Guys vs. Girls: Who Has Better Reflexes?

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Heating Sugar

Start your toy engines -- this is going to be a fast and friction-filled race!

Car Friction: The Science of Going Fast

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

Capillary Action Experiment

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