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Left-Handedness: A Science Project

Left-Handedness: A Science Project | Science Fair Projects | STEM Projects
Have you ever wondered how many people are left-handed? This science project will help you find out! You'll observe people writing their names and record the number of left-handed people in each class. Then, you'll calculate the percentage of left-handed people in the school.


The hypothesis is that left-handed persons will form less than 10% of the total number of persons surveyed.

Method & Materials

You will visit two classes each day and ask the students to write their names in a registration book. You will observe which hand they use to write and record it in a register. You will repeat this with the remaining five classes over three days.
You will need a registration book for students to write their names, a pen, an authorization letter from the school principal, and a register of all the student names in each class.


After observing the students, it was found that the total percentage of left-handed students among the 12 year olds in the school was only 6.3%. This proves that the hypothesis was correct.

Why do this project?

This science project is interesting because it shows how left-handed people are in the minority. It also shows how the brain works differently in left-handed people.

Also Consider

Consider conducting a survey to find out how many left-handed people kick a ball with their left foot. Also, consider conducting a survey on how many people can fold their tongue.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

Related videos

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!
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