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Resources tagged with Codes and cryptography similar to Geomlab:

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There are 9 results

Broad Topics > Applications > Codes and cryptography

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The Best Card Trick?

Age 11 to 16 Challenge Level:

Time for a little mathemagic! Choose any five cards from a pack and show four of them to your partner. How can they work out the fifth?

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Secondary Cipher Challenge Part 1

Age 11 to 16 Challenge Level:

Here is the start of a six-part challenge. Can you get to the end and crack the final message?

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Secret Transmissions

Age 14 to 16 Challenge Level:

How can Agent X transmit data on a faulty line and be sure that her message will get through?

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Cipher Challenge Toolkit

Age 11 to 18 Challenge Level:

Our toolkit removes the drudgery of codebreaking while leaving you to do the hard thinking!

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Substitution Transposed

Age 11 to 16 Challenge Level:

Substitution and Transposition all in one! How fiendish can these codes get?

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Transposition Cipher

Age 11 to 16 Challenge Level:

Can you work out what size grid you need to read our secret message?

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Keeping it Safe and Quiet

Age 14 to 18

Simon Singh describes PKC, its origins, and why the science of code making and breaking is such a secret occupation.

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James's Code Challenge

Age 7 to 18 Challenge Level:

The Enigma Project's James Grime has created a video code challenge. Watch it here!

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Substitution Cipher

Age 11 to 14 Challenge Level:

Find the frequency distribution for ordinary English, and use it to help you crack the code.