P6M made string telephones and carried out a range of tests to find out which resources carried the sound most effectively.
We talked about investigations in Science, how they are carried out, the importance of a fair test and variables.
The things that the pupils changed/tested were:
- The materials that the cups were made of (plastic/paper),
- The length of the string,
- The type of string,
- How taut the string was,
- What if the string went around a corner?
- What if the string had a knot in it?
