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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?

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

The Single Fixed Pulley System

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

Design Challenge: Making a Catapult

In this activity, your child will be challenged to make a tower using paper cups.

Design Challenge: Creating a Cup Tower

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

Like Oil And Vinegar

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

What is a Wedge?

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Make a Pulley

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

How to Make A Thermometer

In this activity your child will create their very own marble maze!

Design Challenge: Marble Labyrinths

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

Design Challenge: Building a Bridge

This science fair project idea  investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Measuring Magnification

Reinforce your child&rsquo;s understanding of the alphabet by helping them construct all of the letters using pipe cleaners.

Design Challenge: Letters of the Alphabet

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

Design Challenge: Making a Boat

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

How to Make a Lemon Battery

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

Feeding Plants

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Balancing Rocks: A Wobbly Game

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Does Ultraviolet (UV) Light Pass through Some Colors More than Others?

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Rate of Evaporation

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?

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 classic children&#39;s game demonstrates how sound travels through air vs. through a solid.

How Sound Travels Through Air and Solids

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

Bridge Over Troubled Water

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot navigate around several obstacles.

Robot Obstacle Course

In this activity, your student will be invited to build a chair out of building blocks that is designed to meet the specific size and shape of a small doll or toy figure.

Chair Design Challenge

This classic children&#39;s game-connecting two cups with a string-demonstrates sound&#39;s ability to travel through air vs through a solid.

The Speed of Sound on a String

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Parachutes

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Bust That Rust!

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

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Hero's Engine: Example of Newton's Third Law

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

Why Do Greens Turn Brown?

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