b. With the help of the words above and the picture on p. 154, imagine what the video will be about.
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2
a. Watch the video. Write down everything you understand in the video about the context.
Historical context
Countries or nationalities
Science
b. Pick out elements in the video to fill in these categories.
Cryptography
The machine
Importance of encryption
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MEDIATION
Let's recap! Present the role played by cryptography during the war.
Useful vocabulary: This document is a... It explains how... Cryptography was... It enabled to...