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Arm Muscles Model Activity

Arm muscle model: students roll cardboard into a humerus, ulna and radius, attach long balloons as muscles on the front and back, then contract them and record what happens.
Grades
Grades 2–8, Elementary, Middle School
Pages
1
File type
PDF
Preparation
Print ready

Updated Oct 13, 2026

Subject
Science, Life Sciences, Human Body, Biology
Topic
Arm Muscles Model Activity, Arm Muscles Model
Resource types
Activities
Preparation
Print ready

About this resource

What's inside this resource

Activity Introduction

The human body is full of fascinating wonders to learn. This activity is created to help the students recognize the anatomy and the job of the human body.

Arm Muscles Model

Every part and organ in our human body is vital so let's see how important they are.

Have you ever imagined how we look like if we didn't have a skeleton?

Did you know that because we have our amazing muscles we can stand!

Do you know how many teeth do we have?

Have you ever wondered about the food journey inside our body?

Can you name all the glands in our body?

Why do we have skin?

Our nervous system is really good at sending signals. Can you tell us more about it?

Are you really good at Mathematics, painting, or any other thing? You should really thank your brain about it!

The famous five senses are really doing a great work? Can you explain how every sense works?

The activity is perfect for encouraging the researching skills for the students, while learning more about our fantastic human body.

Arm Muscles Model

This friendly designed worksheet is suitable for students at school, homeschooling, and as a group activity.

Instructions

  • Make 3 rolls out of cardboard, one should be wider in diameter, and the other a smaller diameter.

  • Label the biggest one "humerus", and the others "ulna" and "radius".

  • Attach the three bones you just created together using the paper clip or a wire.

  • Blow up the balloons with little air in the middle.

  • Attach one balloon to the front of your bones, and one to the back.

  • Try to contract the balloons now and write down what happened.

Format

Available in a PDF format.

In the classroom

Teaching tips & learning objectives

Learning objectives

  • Name the humerus, ulna and radius
  • Describe how the arm model moves when the balloon muscles contract

Teaching tips

  • Gather cardboard, a paper clip or wire, two long red balloons, a rubber band, yarn, tape and a marker before building.

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