Use your code cracking skills to work out the punchlines to five Christmas cracker jokes that have been encrypted as secret messages. Each letter is coded using the grid shape surrounding it.
You can also have a go at encrypting your own secret messages, using our Cryptography resource developed by the Open University, with five different ciphers to choose from.
Three Christmas tongue twisters have been encrypted as secret messages, using Pigpen Cipher. Can you crack the code?. Each letter is coded using the grid shape surrounding it.
You can also have a go at encrypting your own secret messages, using our Cryptography resource developed by the Open University, with five different ciphers to choose from.
