Before the lesson
- To recognise the uses of RFID
- To know how encoding keeps data safe
Pupils should be taught to:
- Understand computer networks including the internet; how they can provide multiple services, such as the world-wide web; and the opportunities they offer for communication and collaboration
Pupils needing extra support: Should use a much shorter code, perhaps a three digit code, and work with a partner.
Pupils working at greater depth: Could extend their system to have a three or four stage encoding system by adding in two further columns which complete a new sum and then ‘undo’ it. They will need to think about which order the sums need to be completed in to ensure that they are successfully decoded.
Pupils could also try much longer numbers, e.g. 16 digit codes like on bank cards.
Extension Opportunity: Children could try to break each other’s codes – i.e. what did the child multiply or add to the code to create the transfer code?