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The Pythagoreans were led by a man named Pythagoras, a mathematician, scientist, and mystic of ancient Greece. Pythagoras is responsible for several notable scientific and philosophical discoveries, but he is most famous for the Pythagorean Theorem in math. His life was very much a mystery, but his teachings shaped the ancient world.
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Abacus was invented by Chinese in 500 BC (while some indications argue on its invention by Babylonians in 300 BC) and was used as one of the most primitive calculators (or counting device to be precise).
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Abacus was invented by Chinese in 500 BC (while some indications argue on its invention by Babylonians in 300 BC) and was used as one of the most primitive calculators (or counting device to be precise).
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students can contact with other students from all over the world
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document camera, laptop ,smart Response LE, smart response PE, smart Response Xe
