Here I present: Claudia Zaslavsky, “Africa Counts: Number and Pattern in African Cultures”, 1973 which was also “sociomathematics” book.
The “tally stick” (shown ABOVE) is a prehistoric, memory-aid, device used to record and document numbers, quantities and messages.
BELOW is a “photograph” of the “Ishango” bone; and, BENEATH is a “drawing” showing the notches numerical values.
The middle-side numbers are from top-to-bottom: 11 21 19 9.
The back-side numbers are from top-to-bottom: 11 13 17 19.
Gary Urton, “Signs of the Inka Khipu: Binary Coding in the Andean Knotted String Records“, 2003 was a “sociomathematics” book that was the topic of an earlier blog post.
Here I presented: Claudia Zaslavsky, “Africa Counts: Number and Pattern in African Cultures”, 1973 .
The “table of contents” is shown ABOVE. Section-3. “Numbers in Daily Life”,
Chapter 9. “Record-Keeping: Sticks and Strings”
was the part of the book on the “Ishango” bone.
The 1957 discovered “Ishango” bone is dated 20,000 years old.
Notches in “Ishango” were a prelude to the “impression” in Sumerian Mesopotamia’ logogram writing in 3,500 BC.
The “Ishango” bone is an undisputed early sociomathematical tool of Mankind in prehistory. This is “record keeping” at “Ishango” the prelude to invention of writing by Sumerians of Mesopotamia’.
