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Elementary School Science Fair Project Ideas

Great selection of elementary school science fair project ideas. These science fair projects can help you find elementary school level ideas for your science fair.

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Elementary School “human-anatomy”
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In this free science fair project idea we learn about how the human arm is a third-class lever.
Human Machine: How is Your Forearm Like a Third-Class Lever?
Elementary School
Engineering
The purpose of this science fair project is to investigate how the caffeine in soda drinks impacts the human heart rate.
Caffeine and Heart Rate
Elementary School
Kindergarten
Science fair project that constructs a model of a backbone to better understand human anatomy.
Constructing A Backbone
Third Grade
Easy
This science fair project idea explores the different parts of the human ear and models how the human ear reacts to sound waves.
How Do We Hear?
Elementary School
Fourth Grade
In this free science fair project idea, we replicate the sound of the human heart to create a heart beat.
Lub Dub: Why Does the Heartbeat of Mammals Make a Sound?
Elementary School
Zoology
What can you do with hair after its cut? This science project teaches you practical uses for human hair.
Can't Do a Thing with Your Hair? Think Again!
Elementary School
Fifth Grade
The goal of this fun science experiment is to explore the limitations of sight and learn working of the human eyes.
Retinal Blind Spots
Elementary School
Middle School
In this free science fair project idea we learn how warm blooded mammals keep their body temperature warm.
Warm-Blooded: How Is Water Used to Lower an Animal’s Body Temperature?
Elementary School
Zoology
What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.
What Causes Dilated Pupils?
Third Grade
Anatomy
Get free science fair project ideas for elementary school children that cover topics based upon animals.
Gripper: How Do Ridges on Fingertips Affect The Ability to Pick Up Objects?
Elementary School
Zoology
This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.
With My Eyes Closed Shut! Using all of Our Senses Except Sight, Can we Readily Identify Objects?
Elementary School
Easy
This science fair project idea determines if family members can recognize one another using only the sense of smell.
How Good is Your Sense of Smell?
Elementary School
Fifth Grade
Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!
Fingerprint Analysis: A Family Case Study
Second Grade
Anatomy
Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.
Optical Illusions
Elementary School
Kindergarten
This science fair project idea experiments with spinning color wheels and optical illusions.
A Trick for the Eyes: Color Wheels and Optical Illusion Tops
Elementary School
Fourth Grade

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