Speaking of NOVA, this web offering is the companion site to an episode of the series called "Decoding Nazi Secrets," a two-hour special that chronicled how the Allies succeeded in cracking the infamous German message-coding machine, the Enigma. Students can learn some of the tricks that codebreakers use to solve ciphers, then use their new-found talents to make sense of sample coded messages. They can also manipulate an online version of an Enigma-like machine to encode their own messages, then eMail the messages to friends with instructions on how to decode them using a secret key.


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