Rubber band guitar: a 1st grade sound and vibration experiment
What it is: a 1st grade science experiment where students stretch rubber bands over an open box, pluck them, and discover that sound is made by vibration. They compare thick and thin bands to hear high and low sounds.
Time: about 30 minutes. Grade: 1st grade.
Materials: a small open box or a plastic container per pair, 3 rubber bands of different thickness, and a pencil to slide under the bands as a bridge.
- Ask students to touch their throat and hum. Ask: "What do you feel?" Name it: vibration.
- Pairs stretch the bands around the box and pluck one. They watch it move and listen.
- Ask: "What happens to the sound when the band stops moving?"
- Compare the thick and thin bands. Which makes a higher sound? Which makes a lower one?
- Slide the pencil under the bands and pluck again. Record what changed with a drawing.
Safety: stretch bands away from faces, and pluck gently. Anyone with a latex allergy uses latex-free bands.
Differentiation: students who need support compare only 2 bands. Students who are ready try to play a simple tune and explain how they changed the pitch. Students with hearing loss can feel the box vibrate with their fingertips.
Quick check: ask a student to show you how to make a lower sound and explain why it works.
For more ideas at this grade, browse the other free activities on the Hub.
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About this resource
- Shared by
- @UpOnlyLearning · Curriculum team
- Posted
- Oct 30, 2026
- Type
- Lesson plan
- Grade
- Grades K–2
- Subject
- Science
- Language
- English
- License
- Free for classroom, co-op and tutoring use. Please don't resell.