Teachers' pack - National Cipher Challenge - University of ...

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The PrizegivingOur sponsor BCS – The Chartered Institute for IT will host a prizegiving ceremonyfor selected participants at Bletchley Park on March 13 th 2015. Some tickets will beavailable by lottery and you can apply for them online athttp://www.cipher.maths.soton.ac.uk/index.php?option=com_cipher&controller=ticketsThe afternoon will include a tour of the museum and tickets are always in highdemand so we recommend applying early.How many can enter?Teams of any size and composition may enter, and a school can enter as many teamsas it wishes. Teams can be run from one or several individual accounts (see above)and inter-school teams are also allowed, indeed, encouraged.6 email:cipher@soton.ac.uk
Frequently Asked QuestionsWhat does it cost to take part?At the moment we are lucky to have several generous sponsors, and the costs of thecompetition are covered by the School of Mathematics at the University ofSouthampton so there is no charge to take part.When does the competition start?Registration opens on September 19th. The first part of the competition will bepublished at 3.15 on Thursday October 10th. There is no need to rush to download itas you have one or two days in which to submit to achieve full speed marks. Often thewebsite is overloaded for the first half an hour or so, and it probably pays to wait outthe rush. The part B prizes will be allocated based on performance in rounds 3-8 so ifyou miss the first couple of challenges it won’t matter too much.When will the Challenges be published?At or shortly after 3.15pm on each of the following Thursdays: 10th, 24th October;7th, 14th, 21st November; 5th, 19th December. These dates have been chosen toavoid the most common half term dates across the UK.How long do we have to complete each challenge?The deadline for each Challenge is 11.59pm on the day before the next Challenge ispublished, The number of points you score in part B depends on how early yousubmit your best attempt.What age group is it aimed at?Principally this is an extension activity for older pupils, but the early stages of thecompetition are aimed at a wide audience and there is something for everyone. Wehave had bright year 6 pupils do well on early rounds and this prepares them forfurther achievement in future competitions. Many pupils return year after year as theytry to improve on the number of stages they can successfully complete, and the stagedcertificates give everyone an incentive to keep going as long as possible. There arealso some small prizes awarded at random to a few participants each week as anadded incentive.Is this appropriate for a Math Club activity?Certainly. The entire math club could enter as a team or you could divide up intosmaller groups and use the math club meetings to discuss techniques and strategies.7
Page 1 and 2: email:cipher@soton.ac.uk
Page 3 and 4: Points are awarded for speed and ac
Page 5: Getting helpWe offer online feedbac
Page 9 and 10: 9AZYXWVUTSRQPONMLKJIHGFEDCBAZYXWVUT
Page 11: Keyword substitution ciphersTo incr
Page 14 and 15: To attack cipher text that has been
Page 16 and 17: to 26. If we choose a carelessly (s
Page 18 and 19: On transposition ciphersSometimes w
Page 20 and 21: second columns have been transposed
Page 22 and 23: Handout for lesson 1.GROUP ACode: C
Page 24: Teachers’ solutions to encryption
Page 27 and 28: University of Southampton Nation

Teachers' pack - National Cipher Challenge - University of ...

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