This lesson allows pupils to consolidate their Python programming skills they have learnt so far by giving them a challenging program to complete. They need to create a program that allows messages to be encoded and decode using a Caesar cypher. While they are doing this, they are acquiring valuable skills about creating robust programs and how to break a complex task into manageable chunks along with common techniques programmers use when tackling large programs.
This lesson is suitable for KS3 computing and GCSE 9-1 computer science pupils.
It includes an attractive dyslexia friendly PowerPoint presentation that includes differentiated lesson objectives, 2 videos to teach key skills and lots of practical programming practice. It also includes a comprehensive teacher’s lesson plan including the answer to the main programming challenge.
Please note: This lesson does assume the pupils are confident with using basic programming constructs of sequence, selection (if statements) and iteration (while and for loops).
Duration: 1 lesson
This lesson teaches pupils about:
- Using sensible variable names and user prompts
- Creating a menu system that works
- Creating a robust program that takes into account user errors to prevent them from crashing the program
- How to break a complex task into manageable chunks
- Caesar cypher
- Converting strings into ASCII code and converting ASCII code into strings