Chinese abacus project, made by kids at Laurelhurst School, Portland, Oregon Who invented the abacus? People in China started to use an abacus to help them with math problems maybe [...]
Chinese numbers: number rods Chinese numbers People in China were using written numbers by about 1500 BC, in the Shang Dynasty. This is about two thousand years later than people began [...]
Nine Chapters: How to figure out the area of an isosceles triangle. A math textbook from Han Dynasty China The earliest Chinese mathematical textbook is called the Nine Chapters. It [...]
African math: Lebombo tally stick (35,000 BC) The first tally sticks African people were the first people anywhere in the world to use counting to keep track of their things, [...]
