Ciphers Codes Or Keys





This lesson is intended to teach the code or key. Attention is called to the mathematical regularity of its construction, which will enable the teacher to demonstrate it in a very simple manner. First write the column of numbers from 1 to 24. Then opposite number 1 place five red circles in a row. Under the last one in this row, and on a line with number 2 place a blue circle, and continue alternating red and blue down the column. Then under the 4th red circle in the 1st row place another red one, then two blue ones, alternating 2 reds with 2 blues down the column. In the 3rd column the reds and blues alternate in sets of four; in the 2nd column, in sets of eight, and in the 1st column, in sets of 16. Since only 24 combinations are necessary, the last eight of the possible 32 have been omitted. Now opposite these 24 combinations place the letters of the alphabet in regular order, remembering that I and J, U and V are used interchangeably.



To facilitate the use of the code the red and the blue circles may be designated by small a and small b respectively. The right hand section of this lesson gives the code worked out on this plan and makes future reference easy. In all the succeeding lessons one form (whether it be blocks, beads, yarn or what not) will be called the a form, and the other will be called the b form. On account of the nature of the code, the a forms always predominate; and in getting together materials for this work, the teacher should be guided accordingly.



 



 







 



LESSON II





Short lines represent the a form, long lines, the b form. The cipher word is “the.” Various forms of sewing cards, or yarns of different colors may be used.





 



LESSON III





In this weaving mat the light squares represent the a form, the dark ones, the b form. The arrow marks the starting point, and the reading proceeds from left to right in each line. The cipher message is “Mary had a little lamb.” Any sentence containing the requisite number of letters can be inserted on the same principle.





 



LESSON IV





This lesson embodies what may be designated as a symbolic cipher design. This design conveys the idea of the setting sun, and hence the cipher word contained within is “sunset.” Red sticks represent the b form, orange sticks, the a form. The arrow marks the starting point, and the reading proceeds in a clockwise direction.





 



LESSON V





This is another symbolic cipher design picturing “Humpty-Dumpty.” The blue squares represent the a form, the red squares the b form. The cipher message is “sat on a wall.” The blank squares can be filled by colored crayons or blocks, and the children can thus practice the building of the message by referring to the code in Lesson I.





 



LESSON VI





Another symbolic cipher design in which the hens represent the b form, the chicks the a form. The cipher word is “egg,” reading from left to right.



This sort of symbolic cipher designing is susceptible of endless variation, and gives a hint of the possibility of drawing cipher pictures.



A sufficient supply is furnished so that when cut out, the hens and chicks may be utilized to spell out various words under the direction of the teacher.







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