Delete Visuals.md

Visuals/Visuals.md

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-# Visuals / resources / decorations:
-- A strip of paper/ cardboard with the alphabet printed and cuts below, through which a second strip with the alphabet can be fitted and pulled to the left or right. 
-/*How long should it be? We can make it from A3 paper glued together*/
-
-- A poster with the Alphabet and the number values of each letter, i.e. A=1, B=2, C=3 etc.
-
-- ASCII table
-
-- Braille poster with a challenge to solve
- 
-- Vigenere square poster (See image file) 
-
-- A poster with an example of Vigenere cipher with a keyword, e.g. code. (See image file)
-
-- Pigpen / Masonic cipher poster (See image file. It's not labelled for reuse so we might need to create our own.)
-
-- SHA-256 poster: /*don't know if we need it. Shall we go all the way to hash algorithms? But I love the text*/
-
-**Why is 2^256 secure?**
-
-What exactly is 2^256? Well, if we’re being technical…
-
-2256 = 115792089237316195423570985008687907853269984665640564039457584007913129639936
-
-There is a 1 in over 115 quattuorvigintillion (that’s a 78-digit number) chance of hash collision.
-
-# Resources / Materials:
-- paper plates/ cardboard cut in circles
-
-- scissors
-
-- rulers for drawing segments for letters, alternatively protractors (Can we borrow them from somewhere?)
-
-- pins for the cipher wheels
-
-- flipchart / whiteboard 
-
-- Vigenere square printed on A4 sheets groups of kids (Age 13-15) can use to encrypt their messages
-
-- Printouts with cryptography self-study resources (the links at the end of the instructions document);
-
-- printouts of decryption tasks;
-
-- printouts of frequency analysis texts for different groups: EN/FR/DE/LU (and ages 11-13/14+ if needed);
-
-- printouts with instructions for the different age groups /*how many copies per group?*/
-
-# Additional resources: 
-https://sites.google.com/site/codesforscouts/cryptogram
-
-Decoration:
-http://www.makeandtakes.com/3-secret-codes-to-try-with-your-kids
-
-examples of different cyphers: reverse alphabet, pigpen, Affine, etc.