Introduction

_{In this hands‐on lesson, learners will explore sound waves through the concept of vibration. They will investigate how sound travels through string and air and use this knowledge to design their own telephone using a paper cup and a string.}

Lesson Objectives

Learners should be able to describe how sound travels in different media.
Learners will work collaboratively in pairs and small groups to carry out simple investigations about sound waves.
Learners should use tools and materials to design and build a device that uses sound to communicate.
Learners should understand that technology has helped people communicate over long distances.

Vocabulary

_{Sound: Vibrations that travel through from their point of origin to a person’s ear Vibration: a shaky, back and forth motion of tiny particles that form materials Sound waves: pattern (wave) that particles make when they vibrate to create sound}

Alexander Graham Bell: Inventor of the telephone.

Medium: A substance that sound travels through