History of Mathematics

It was interesting to find out that that almost 30,000 they carved tally marks on walls or slash tallies on bones. Each tally stood for one this system was cowered when it can to large amounts so thats was when symbols were created.A small clay cone was used for one ,a clay ball was used for teen,and a large cone was used for 60.In Nigeria they used like a nickels, the Persians used nots on a cord to count.