Unit 3


  1. What other interesting examples of codes from history or the modern-day (digital or non-digital) can you find to inspire or support a lesson about encoding and decoding messages?

    I have chosen to look at the NATO alphabet, this code system is a Spelling Alphabet, a set of words used instead of letters in oral communication. Spelling alphabets, such as the NATO Phonetic Alphabet, consists of a set of words used to stand for alphabetical letters in oral communication. These are used to avoid misunderstanding due to difficult to spell words, different pronunciations or poor line communication.Info collected from: https://www.worldometers.info/languages/nato-phonetic-alphabet/

    A classroom activity example is listed below from the British Red Cross
    link: https://www.redcross.org.uk/get-involved/teaching-resources/alfa-bravo-charlie

    • Break your students into groups and give them five or six letters each. They can then make flashcards by drawing pictures or finding pictures in magazines or on the internet.
    • Spell out your name, and then ask students to spell out their names.
    • Drill the alphabet around the class, forwards and backwards, picking letters at random. Repeat them over and over. Concentrate on the ones they find hardest, not just the ones they are sure of. Drill it until it is hard-wired into their heads, so they produce it automatically and instantly.

    Use it as homework or out-of-class exercise. But return to it throughout the term too, for revision and consolidation. You can surprise students and give them a quick test.

    Talk about the way the alphabet is designed. The aim is to have things unambiguous and as clear as possible under radio interference or other poor audio conditions. Talk about how easy it would be to mishear b for p – but not bravo for papa.

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