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Caesar Cipher Activity Sheet
© 2008 National Council of Teachers of Mathematics http://illuminations.nctm.org Caesar Cipher NAME ___ 1. Who was Julius Caesar, and where was he from? During what period of time did he live? 2. The Caesar cipher is based on shifting the letters in the alphabet...
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© 2008 National Council of Teachers of Mathematics http://illuminations.nctm.org Caesar Cipher NAME ___ 1. Who was Julius Caesar, and where was he from? During what period of time did he live? 2. The Caesar cipher is based on shifting the letters in the alphabet a certain number of spaces. How many different shifts are possible? Explain your reasoning. 3. Why do you think this method was used by Julius Caesar? At his time in history, how
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http://illuminations.nctm.org/Lessons/Codes/Caesar-AS-Caesar.pdf#page=1
illuminations.nctm.org/Lessons/Codes/Caesar-AS-Caesar.pdf#page=1
© 2008 National Council of Teachers of Mathematics http://illuminations.nctm.org Caesar <span class="highlight">Cipher</span> NAME ___ 1. Who was Julius Caesar, <span class="highlight">and</span> where was he from? During what period of time did he live? 2. The Caesar <span class="highlight">cipher</span> is <span class="highlight">based</span> on shifting the letters in the alphabet <span class="highlight">a</span> certain number of spaces. How many different shifts are possible? Explain your reasoning. 3. Why do you think this method was used by Julius Caesar? At his time in history, how
Codes
is a shift transformation. The first known shift transformation is attributed to Julius Caesar, and is now called the Caesar cipher. The cipher works in the following way. Each letter in the alphabet is replaced by another letter using a predef...
NOVA scienceNOW - Kryptos: Send a Secret Message
substitution, take one letter or word and swap it for another; transposition: keep the letters the same, just systematically mix them up. Pretty straightforward tricks and yet they've been stumping would-be code breakers for thousands of years. Julius Caesar came up with a sys...
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