2With an adult’s help, poke a small hole in the center of each cup.
3Thread the string through one cup and tie it to a paper clip inside the cup.
4Repeat this process with the other end of string and the second cup.
5Pull the string tight between the two cups.
6One person holds one cup to their ear, while the other talks softly into the cup.
How It Works
The string telephone helps people communicate over distances with sound. When one person talks into the cup, the sound from their voice vibrates down the string. The partner can then hear the message loud and clear in their cup.
Check out the Full Lesson on Communication Over Distances!
In this lesson, we learn that:
To communicate over distances we can use light.
We can also use sound to communicate.
We receive messages through light and sound every day.