Secret Codes and The Enigma Machine!

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Secret Codes and The Enigma Machine!
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By Pleckgate High School and St Stephens Junior
School
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Here is part of our first message which was
called A stranger in her own country
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(No Transcript)
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• We recognised this as the Mary Queen of Scots
  code that we saw at the first videoconference.
• By looking for repeating letters we quickly found
  where the word queen was and then we were off!

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The next week was called Guilty or not Guilty
and we cracked this when we realised that most
letters stayed the same except for these swaps
C and E, N and T, O and S and we also found J
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We spent ages and ages on our next one Prison
and Plots until we realised that all the letters
had moved on 3 places and then it was OK!
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Our last message was called Treason and this
time lots of letters had been swapped or changed
from our last message. We were lucky to solve
this one because we guessed the word Elizabeth
which worked and gave us lots of letters!
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On our next slide we have done a table showing
all the letters and how they were coded each week.
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(No Transcript)
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• We spent a whole maths lesson finding out who the
  Enigmatic Character was by cracking all the
  different codes.
• We enjoyed this more than any other maths lesson
  this year!!
• Here is a picture of the gifted Muslim
  mathematician Al-Kindi

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(No Transcript)
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• Here are some of our comments about doing this
  project
• I really enjoyed working out the codes, some were
  easy, some were hard
• I loved doing this because it was about history
  and I like history
• The whole class helped everyone to crack the
  codes
• I have enjoyed cracking codes very much and hope
  that we will start a code club!