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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

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

Balancing Rocks: A Wobbly Game

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Temperature, Air Humidity and Static Electricity

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Why Do Apples Turn Brown?

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

What Causes Dew?

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

How to Inflate a Balloon Using Baking Soda and Vinegar 

In this CD hovercraft science project, students will construct their own DIY hovercraft.

DIY Hovercraft

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 science fair project idea determines which method of hand cleansing is the most effective.

Effective Hand Washing

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

Complete Circuit: How Does a Flashlight Work?

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

Thermal Conductivity of Metals: Which Metal Is the Best Conductor of Heat?

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

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

Caution Sign Safety

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

How Does Salinity and Temperature Affect the Density of Water?

This science fair project idea  determines what household items are good conductors of electricity.

Conductor or Insulator

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

Arch Magic: The Unbreakable Egg

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?

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

What is Condensation?

This science fair project idea determines what household items are good conductors of electricity.

Conductor or Insulator?

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

Heat Capacity of Water vs. Heat Capacity of Oil

Cleaning can be a chore, but not with this sudsy experiment!

Homemade Cleaners: Getting Squeaky Clean

Have your child kick off their summer vacation by making a miniature water slide!

Design Challenge: Making a Water Slide

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Show the Direction of Magnetic Field Lines

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

Rubber Band Heat Engine

This science fair project explores how osmotic pressure forces water through the root up into the plant.

How Does Water Travel Up the Root of a Plant?

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

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Ew... Brown Guacamole!

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

Example of Newton's First Law

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

Bust That Rust!

This science and writing inspired lesson combines the five senses with weather predictions! Kindergarten students will love practicing their observation skills as they imagine tomorrow&rsquo;s weather.

Five Senses Weather

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