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Physical Science

How to Make a Simple Electric Motor

Kids learn how to make a simple electric motor in this great engineering science fair project that teaches them how current generates its own magnetic field.

How to Make a Solar Oven

Check out this cool and free middle school science fair project idea on how to make a solar oven.

How to Make a Lemon Battery

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

Vegetable Power

This science fair project idea explores if an LED light can be powered by vegetables and/or fruits.

This project explores the effectiveness of various common household ingredients in cleaning tarnished and oxidized coins.

Candle Burning Experiment

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

Electrolysis of Water Experiment

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

How to Make a Bouncy Ball

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

How Does Microwave Radiation Affect Different Organisms?

This experiment explores how microwave radiation affects fungi, bacteria, and plant life.

Keep a Candle Burning Underwater!

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

How to Make Lightning

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

How Fast Does Light Travel in Water vs. Air? Refraction Experiment

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

Make a Pinhole Projector!

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

Oersted's Experiment

In this project, you'll create Oersted's experiment, which relates to how electric currents create magnetic fields.

Make Your Own Soap

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

Your mission, if you choose to accept it, is to construct a parachute that will deliver an egg safely to the ground. Good luck!

Bake a Chemistry Cake

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

Bungee Jump ... With Eggs!

Invite your middle schooler to bungee jump ... with eggs! This experiment will demonstrate Newton's laws of physics in an entertaining way.

Firework Science

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Separate Salt and Pepper With Static Electricity

What's the quickest way to separate salt and pepper? Let static electricity do the work! Your child will be fascinated by this simple experiment.

States of Matter in a Baggie

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Rainbow in a Jar

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Electromagnetic Induction Experiment

Kids make an electromagnet in this electromagnetic induction experiment to learn about induction, current, and the right-hand rule.

Construct batteries that make electricity from fruits with this fun science fair project.

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