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  2. Lebombo bone - Wikipedia

    en.wikipedia.org/wiki/Lebombo_bone

    The bone is between 43,000 and 42,000 years old, according to 24 radiocarbon datings. [2] This is far older than the Ishango bone with which it is sometimes confused. Other notched bones are 80,000 years old but it is unclear if the notches are merely decorative or if they bear a functional meaning. [3] The bone has been conjectured to be a ...

  3. Ishango bone - Wikipedia

    en.wikipedia.org/wiki/Ishango_bone

    The Ishango bone on exhibition at the Royal Belgian Institute of Natural Sciences. The Ishango bone, discovered at the "Fisherman Settlement" of Ishango in the Democratic Republic of the Congo, is a bone tool and possible mathematical device that dates to the Upper Paleolithic era. [1]

  4. Tally stick - Wikipedia

    en.wikipedia.org/wiki/Tally_stick

    The Lebombo bone, dated between 44,200 and 43,000 years old, is a baboon's fibula with 29 distinct notches, discovered within the Border Cave in the Lebombo Mountains of Eswatini. The so-called Wolf bone is a prehistoric artefact discovered in 1937 in Czechoslovakia during excavations at Dolní VÄ›stonice, Moravia, led by Karl Absolon.

  5. Tally marks - Wikipedia

    en.wikipedia.org/wiki/Tally_marks

    Dated to the Aurignacian, approximately 30,000 years ago, the bone is marked with 55 marks which may be tally marks. The head of an ivory Venus figurine was excavated close to the bone. [1] The Ishango bone, found in the Ishango region of the present-day Democratic Republic of Congo, is dated to over 20,000 years old

  6. History of ancient numeral systems - Wikipedia

    en.wikipedia.org/wiki/History_of_ancient_numeral...

    The bone has been dated to 42,000 years ago. [12] According to The Universal Book of Mathematics,: p. 184 the Lebombo bone's 29 notches suggest that "it may have been used as a lunar phase counter, in which case African women may have been the first mathematicians, because keeping track of menstrual cycles requires a lunar calendar."

  7. Prehistoric Central Africa - Wikipedia

    en.wikipedia.org/wiki/Prehistoric_Central_Africa

    Between 25,000 BP and 20,000 BP, hunter-fisher-gatherer peoples in Central Africa (e.g., Ishango, Democratic Republic of Congo) used fishing tools and natural resources from nearby water sources, as well as may have engaged in and recorded mathematics (e.g., Ishango bone, which may demonstrate knowledge and use of the duodecimal system, prime ...

  8. Songora people - Wikipedia

    en.wikipedia.org/wiki/Songora_people

    The Ishango Bone is one of the items that was found in Songora territory. While the Eastern Arm of the Great Rift Valley located in Ethiopia, Kenya and Tanzania has yielded the greatest amount of ancient human fossils, the northern portion of the Western Arm of the Rift Valley - home of the Songora - remains largely unexplored, although it ...

  9. Category:Mathematical tools - Wikipedia

    en.wikipedia.org/wiki/Category:Mathematical_tools

    Ishango bone; L. Lebombo bone; Location arithmetic; M. Marquois scales; Matheass; Mathematical instrument; Mathematical Models (Cundy and Rollett) Mathematical Models ...