In Room 4 we did an experiment with paper telephones. We used paper cups and string.

So first we put a hole in the bottom of the paper cup and then we put a hole in the other cup.

Then we put the string through the cup and then tied a knot at the end of it.

Then my class and I tested it out by taking into one cup and listening into the other.

We noticed that the string had to be straight or else the sound wouldn’t travel properly.

We even started to cross the strings of four people’s cups. As long as the strings were straight and were touching, one person talking could be heard in the other three people’s cups!

it was great to experiment and learn about how sounds travels!