Lesson 1: Secret codes
Exploring a variety of different codes from simple Caesar ciphers to the Enigma code.New statutory RSHE guidance is here. We’re creating our brand new RSE & PSHE scheme ready for September 2026. Learn more
Learning objective
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Success criteria
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Before the lesson
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Lesson plan
Before starting this unit, check that the children can recall:
What copyright is and why people should seek permission to use other people's photos, artwork and writing.
Images, text, transitions and animation can be used in presentation slides.
World War 2 was a battle between two groups of countries called the Allies (Britain, France, the Soviet Union, China and the United States) and the Axis powers (Germany, Italy and Japan). It started in 1939 and ended in 1945.
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Cat is a former primary school teacher with 12 years of teaching experience. She has a passion for coding and computer science and specialises in supporting teachers who are getting started on their journey into using technology in the classroom. In 2017 she was shortlisted for the European Digital Woman of the Year award and has been invited to speak about her experiences teaching computer science around the world including in Brazil, Argentina and the US. Cat is passionate about talking about equality, stereotypes and mental health as well as supporting the teaching of computer science.
Cat has created engaging topics that range from an introduction to Computing for KS1 pupils to a KS2 lesson on the first computer and how it cracked the Enigma code. Cat has also worked on our online safety lessons that form part of our RSE and PSHE resources.
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