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. Other notches-bones dated earlier, such as the “Lebombo” bone (40,000 years old) have since been found.
The “Ishango” bone is an undisputed early sociomathematical tool of Mankind in prehistory.
