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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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1,594 results
1,594 results
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Visualizing Pitch
Science project
Visualizing Pitch
This science fair project idea examines if there is a reason that musical notes are at the pitches they are.
High school
Science
Science project
Reptile Activity Level
Science project
Reptile Activity Level
This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.
High school
Science
Science project
Retrograde Mode
Science project
Retrograde Mode
This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.
5th grade
Science
Science project
Solar System and Atom
Science project
Solar System and Atom
This science fair project idea teaches about the size of two different systems: the solar system and an atomic system.
High school
Science
Science project
How Much Sugar?
Science project
How Much Sugar?
This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.
5th grade
Social studies
Science project
Talking to Plants
Science project
Talking to Plants
This science fair project idea explores whether talking to a plant will help it grow.
3rd grade
Science
Science project
The Gossip Factor
Science project
The Gossip Factor
This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.
5th grade
Social studies
Science project
Training Cats
Science project
Training Cats
This science fair project idea explores whether cats can be trained in the same way that dogs can.
5th grade
Social studies
Science project
Upside-Down Plants
Science project
Upside-Down Plants
This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.
4th grade
Science
Science project
Bridge Project
Science project
Bridge Project
This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.
5th grade
Science
Science project
Anaerobic Energy
Science project
Anaerobic Energy
This science fair project idea determines an average personâs ability to use their anaerobic power system over a period of 2 weeks.
High school
Science
Science project
Backyard Biosphere
Science project
Backyard Biosphere
This science fair project idea explores what it takes to create a biosphere, or a self-sustaining ecosystem.
Science
Science project
Strong Bridges
Science project
Strong Bridges
This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.
5th grade
Science
Science project
Caution Sign Safety
Science project
Caution Sign Safety
This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.
5th grade
Social studies
Science project
Center of Balance
Science project
Center of Balance
This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.
4th grade
Science
Science project
Centrifuge
Science project
Centrifuge
This science fair project idea explores what common compounds can be easily separated out in a centrifuge.
High school
Science
Science project
Which Gender Has Better Memory?
Science project
Which Gender Has Better Memory?
This science fair project idea explores discover whether there are any patterns or trends in the memories between different genders.
Social studies
Science project
Do People With Warmer Skin Tones Tend To Like Warmer Colors and Cooler, Cool?
Science project
Do People With Warmer Skin Tones Tend To Like Warmer Colors and Cooler, Cool?
This science fair project idea explores if people with cool skin tones prefer cool colors and people with warm skin tones prefer warm colors.
Social studies
Science project
Should You Eat Before Or After Exercise?
Science project
Should You Eat Before Or After Exercise?
This science fair project idea determines whether eating before or after exercise is more beneficial to health and performance.
Science
Science project
What’s a Bug’s Favorite Color?
Science project
What’s a Bug’s Favorite Color?
Demonstrate that insects observe colors and choose favorites. Place colored pieces of construction paper on a flat, glassy surface, observe bug preference.
Science
Science project
Hairy, Fat and Warm
Science project
Hairy, Fat and Warm
Measure temperature change over time using a variety of insulation materials. Be creative with insulation materials: scarves, yarn, socks, feathers, oil, etc
Science
Science project
Let's Go Caving!
Science project
Let's Go Caving!
Science fair project that demonstrates how stalagmites and stalactites are formed.
Science
Science project
Which Fabrics are Most Absorbent?
Science project
Which Fabrics are Most Absorbent?
Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.
5th grade
Science
Science project
Does Text Color Affect Readability
Science project
Does Text Color Affect Readability
Discover whether the color of text correlates with ease and speed of reading.
Social studies
Science project
A Glass Symphony
Science project
A Glass Symphony
Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.
4th grade
Science
Science project

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