Aryabhatta found out the value of pi, but howThere is something our text books miss. In this thread I tried to show how science and maths books don't cover the personality and stories of the inventors and discoveries. Then there are history books that don't cover the logic a person used to find something but only the dates and stories of how he did. Aryabhatta was one of the greatest minds India has house. He lived in 4th century AD under the Gupta rule. He is claimed to have done following inventions. He is believed to have found an approximate value of Pi. He hypothesised elliptical orbit of planets. He devised approximate days for eclipses that are true with a small margin of error. He also used primitive algebra, by using Sanskrit letters to denote. He used concepts of trigonometry and spherical trigonometry. He calculated rotation of Earth, true to seconds.
But Aryabhatta quite definitely does not "invent" zero because Hindus had a concept of zero since the time of Vedas. Aryabhatta uses Place Value system, that has zeros, ones, tens, hundreds and so on places. That gives an idea that Aryabhatta knows and used zero. Aryabhatta would use decimals too, further concreting this idea.
These all inventions we do know. We have read about them in our books. But how many of us try to actively know how did Aryabhatta land on these inventions? What was the logic he used? Great minds think alike people say. Observing the methods used by such a great thinker, we too might solve problems in our life or come up with unique solutions. Seeing facts as just facts is what kills the education in its birth. Education comes from thinking about what we were taught. This is the kind of education that is vouched by ancient Indian schools of philosophy and thinking. Thinking about about education is what leads us to enlightenment.