As part of their science lessons, learning about sound, Year 4 were tasked with being acoustic engineers this afternoon! They had already explored a range of instruments and found out that sound is created by vibrations, but today they were given a range of materials and asked to investigate what design made the best string telephone.
The engineers worked together in small groups to make and test a range of telephones, modifying their designs as they learnt which type of string carried the sound best, which material and size of cup amplified it best, before finally applying what they had learnt to designing the best string telephone.
As an extra challenge the engineers investigated whether it was possible to add an additional telephone line to the original one, and listen in. They were amazed and excited to find that it was possible!