Science Fair Project Ideas

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Soil pH: Acid or Alkaline?
Soil pH: Acid or Alkaline?
Science Project
Soil pH: Acid or Alkaline?
Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.
4th grade
Science
Science Project
Oxygen in Water: A Bubbly Science
Oxygen in Water: A Bubbly Science
Science Project
Oxygen in Water: A Bubbly Science
Sure, you already know that water is made up of hydrogen and oxygen, but did you know that oxygen levels differ in different types of water?
Science
Science Project
Gravitropism
Gravitropism
Science Project
Gravitropism
What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.
2nd grade
Science
Science Project
Candy pH
Candy pH
Science Project
Candy pH
Take a dive into the candy jar with this yummy science experiment.
4th grade
Science
Science Project
Sand Bridge
Sand Bridge
Science Project
Sand Bridge
Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.
4th grade
Science
Science Project
Candy or Medicine?
Candy or Medicine?
Science Project
Candy or Medicine?
Uh-oh! Is that a pill sitting on the counter or a piece of candy?
1st grade
Science
Science Project
Speaking Cat
Speaking Cat
Science Project
Speaking Cat
Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.
2nd grade
Science
Science Project
Do It Yourself Weather!
Do It Yourself Weather!
Science Project
Do It Yourself Weather!
This science project challenges students to take learned information about weather and climate control and apply it to come up with creative ideas of their own.
Science
Science Project
Testing the Solubility of Common Liquid Solvents
Testing the Solubility of Common Liquid Solvents
Science Project
Testing the Solubility of Common Liquid Solvents
In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.
4th grade
Science
Science Project
What Causes the Phases of the Moon?
What Causes the Phases of the Moon?
Science Project
What Causes the Phases of the Moon?
What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.
5th grade
Science
Science Project
Series and Parallel Circuits
Series and Parallel Circuits
Science Project
Series and Parallel Circuits
How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!
5th grade
Science
Science Project
Energy Transformation
Energy Transformation
Science Project
Energy Transformation
Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.
Science
Science Project
3-D Model of the Sun
3-D Model of the Sun
Science Project
3-D Model of the Sun
In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.
5th grade
Science
Science Project
Van de Graaff Generator Experiments
Science Project
Van de Graaff Generator Experiments
Explore concepts in current and coltage with these Van de Graaff generator experiments.
Science
Science Project
The Effect of Caffeine on Plant Growth
The Effect of Caffeine on Plant Growth
Science Project
The Effect of Caffeine on Plant Growth
The goal of this middle school science fair project is to examine the effect of caffeine on plant growth.
Science
Science Project

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.