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Moon type was developed by William Moon (1818—1894), a blind Englishman living in Brighton, East Sussex. After a bout of scarlet fever, Moon lost his sight at age 21 and became a teacher of blind children. He discovered that his pupils had great difficulty learning to read the existing styles of embossed reading codes, and devised his own ...
The Vigenère cipher is named after Blaise de Vigenère (pictured), although Giovan Battista Bellaso had invented it before Vigenère described his autokey cipher. The Vigenère cipher ( French pronunciation: [viʒnɛːʁ]) is a method of encrypting alphabetic text where each letter of the plaintext is encoded with a different Caesar cipher ...
The pigpen cipher uses graphical symbols assigned according to a key similar to the above diagram. [1]The pigpen cipher (alternatively referred to as the masonic cipher, Freemason's cipher, Rosicrucian cipher, Napoleon cipher, and tic-tac-toe cipher) [2] [3] is a geometric simple substitution cipher, which exchanges letters for symbols which are fragments of a grid.
Caesar cipher. The action of a Caesar cipher is to replace each plaintext letter with a different one a fixed number of places down the alphabet. The cipher illustrated here uses a left shift of 3, so that (for example) each occurrence of E in the plaintext becomes B in the ciphertext. In cryptography, a Caesar cipher, also known as Caesar's ...
A book cipher is a cipher in which each word or letter in the plaintext of a message is replaced by some code that locates it in another text, the key . A simple version of such a cipher would use a specific book as the key, and would replace each word of the plaintext by a number that gives the position where that word occurs in that book.
The Discovery of the Child is an essay by Italian pedagogist Maria Montessori (1870-1952), published in Italy in 1950, about the origin and features of the Montessori method, a teaching method invented by her and known worldwide. The book is nothing more than a rewrite of one of her previous books, which was published for the first time in 1909 ...
Secret Coders is a series of 6 educational graphic novels. Each of the Secret Coders graphic novels has 3 chapters. The chapter “titles” are drawings of four-eyed binary birds, displaying the chapter number in binary with open and closed eyes. At the end of each chapter, there is a coding or binary challenge. At the end of each book, there is a coding challenge. The answer to the coding ...
The Deseret alphabet (/ ˌ d ɛ z ə ˈ r ɛ t / ⓘ; [1] Deseret: 𐐔𐐯𐑅𐐨𐑉𐐯𐐻 or 𐐔𐐯𐑆𐐲𐑉𐐯𐐻) is a phonemic English-language spelling reform developed between 1847 and 1854 by the board of regents of the University of Deseret [2] under the leadership of Brigham Young, the second president of the Church of Jesus Christ of Latter-day Saints (LDS Church). [3]