Loop cards are a great game that can be played individually or as a class. They are perfect for review key vocabulary or questions at the end of a topic or when revising for an exam.
Instructions
Cut out the cards from the paper horizontally (but don't cut them in half!) and then shuffle them.
Now start joining each question on the right hand side of the card to the matching answer on the next card.
Carry on until all the cards loop together and you have competed the game!
Hint: Make sure that you set your paper to portrait to print 4 cards per sheet of A4 paper.
A cipher that rearranges the order of the plaintext letters or symbols, rather than replacing them with different ones as in a substitution cipher.
Autokey Cipher
"A polyalphabetic cipher similar to the Vigenere Cipher, but using the plaintext itself as part of the key sequence in order to overcome a weakness observed in the original Vigenere Cipher."
Cryptanalysis
The study and practice of breaking codes and ciphers, usually with the goal of deciphering encrypted messages without knowledge of the secret key.
Frequency Analysis
A technique used to analyze and decipher encrypted messages by studying the frequency of occurrence of letters or symbols in the ciphertext.
Key
A piece of information used in conjunction with an encryption algorithm to transform plaintext into ciphertext and vice versa.
Encryption
The procedure of converting plain text into ciphered text by employing an algorithm for secure encoding and a confidential key.
Alphabet
A set of letters or symbols used to represent a language or system of writing, ordered in a fixed sequence.
Ciphertext
The encrypted message or data that is the result of the encryption process and that appears scrambled and unreadable until it is decoded.
Substitution Cipher
A cipher that replaces each plaintext letter or symbol with a different letter or symbol to create the ciphertext.
Polyalphabetic Cipher
A cipher that uses multiple substitution alphabets to encrypt the plaintext. The Vigenere Cipher is an example of this type of cipher.