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Science Fair Project Ideas

Education.com has assembled a vast collection of science fair project ideas written by science teachers, professional scientists, and educational consultants on popular science fair topics ranging from physics and chemistry to biology and even sociology. We offer free science fair ideas suitable for every grade level, be it preschool, kindergarten, elementary school, middle school, or high school. Check the boxes in the sidebar to filter your results, or use the search bar to find that perfect science fair project or experiment your child will be sure to love.

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1,618 results
1,618 results
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Thermal Energy
Science project
Thermal Energy
Science
Science project
Electromagnetic Induction Experiment
Science project
Electromagnetic Induction Experiment
Kids make an electromagnet in this electromagnetic induction experiment to learn about induction, current, and the right-hand rule.
Science
Science project
How to Make Lightning
Science project
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.
5th grade
Science
Science project
Greenhouse Effect
Science project
Greenhouse Effect
Learn about the greenhouse effect- and get great science fair experiment ideas. Read more.
Science
Science project
How to Make A Thermometer
Science project
How to Make A Thermometer
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?
2nd grade
Science
Science project
Which Battery Lasts the Longest?
Science project
Which Battery Lasts the Longest?
Which battery lasts the longest? In this science fair project, kids will test popular brand name batteries like Duracell and Energizer against generic brands.
Science
Science project
How to Make a Lemon Battery
Science project
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.
2nd grade
Science
Science project
Open and Short Circuits
Science project
Open and Short Circuits
Does "short circuit" mean that electricity takes a short course? This science experiment provides steps to help you get to the bottom of this science mystery.
Science
Science project
Make a Rheostat
Science project
Make a Rheostat
This article provides steps for making a rheostat, a small device that controls the voltage by a dial or knob. Great for science fairs!
Science
Science project
Hydro-Power
Science project
Hydro-Power
Discover the force of water! This article provides step-by-step instructions for creating your own science experiment.
Science
Science project
Electrolysis of Water Experiment
Science project
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.
Science
Science project
How to Make a Steam Powered Rocket Boat
Science project
How to Make a Steam Powered Rocket Boat
Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.
4th grade
Science
Science project
Renewable Energy Project for Kids: Power from Water
Science project
Renewable Energy Project for Kids: Power from Water
Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.
5th grade
Science
Science project
Plants Help Keep a House Cool!
Science project
Plants Help Keep a House Cool!
Plants help keep a house cool! This article includes step-by-step instructions for completing this fun and interesting science experiment.
Science
Science project
Heat from Light Bulbs
Science project
Heat from Light Bulbs
This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.
4th grade
Science
Science project
Solar Hot Dog Cooker
Science project
Solar Hot Dog Cooker
Kids use applied math to build and test a parabolic mirror solar hot dog cooker in this cool engineering science fair project idea for middle school.
Science
Science project
Air Power for Transportation
Science project
Air Power for Transportation
Can the force of air be used to propel a vehicle? This science experiment provides step-by-step instructions to help you answer this question.
Science
Science project
Building a Wind Gauge
Science project
Building a Wind Gauge
How fast is the wind blowing? This science experiment provides step-by-step instructions to help you answer this question.
Science
Science project
How to Make an Anemometer
Science project
How to Make an Anemometer
Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.
4th grade
Science
Science project
How Light Affects Plant Growth
Science project
How Light Affects Plant Growth
How does light affect plant growth? Do different colors of light work better than others? Find out in this classic science fair project idea.
Science
Science project
Germination: "The Birth of a Plant"
Science project
Germination: "The Birth of a Plant"
Science
Science project
Do Plants Start Off Better with Distilled Water, Miracle Gro or a Complete Nutrient?
Science project
Do Plants Start Off Better with Distilled Water, Miracle Gro or a Complete Nutrient?
Science
Science project
Do Gender and Age Affect Smiling?
Science project
Do Gender and Age Affect Smiling?
This science fair experiment examines the relationship between gender, age, and smiling.
Social studies
Science project
Diffusion, Membranes, and Cryogenics: Can We Freeze Cells?
Science project
Diffusion, Membranes, and Cryogenics: Can We Freeze Cells?
Can cells be frozen? This science fair project provides information to answer this question.
Science
Science project
Tides in the Chesapeake Bay
Science project
Tides in the Chesapeake Bay
Science
Science project

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