Lesson 1: Secret codes

Pupils explore a variety of different codes, from simple caesar ciphers to the Enigma code

Learning Objectives

  • Understanding that there are lots of different types of secret codes

  • Understanding why codes might be valuable

  • Identifying some common secret codes

  • Deciphering some secret codes

  • Writing a message using a secret code

Lesson Plan

Secret codes
See the plan

Teacher Video: Secret codes


Codebreaker worksheet
Codebreaker worksheet answers
Created by:
Cat Lamin,  
Computing specialist
Cat was a committed primary school teacher for twelve years. After starting her independent consultancy ‘Crossover Solutions’ she has travelled to Argentina, Brazil and America to share her wealth of knowledge of computer science with other teachers. Her enjoyment for…
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