Active modelling - String vs mobile phone

Keywords: digital, analogue, encode, decode. Notes: This activity helps learners compare how a simple string telephone works against a more complex digital system. Get the students to make string telephones using paper/plastic cups and lengths of string before attempting to complete the sheet. This helps explain an abstract idea by building up from a very hands on simple (more concrete) example. It really engages learners of all abilities. There is an activity sheet and a guidance sheet with answers. This was originally designed for OCR 21st Century Science unit P2