Mast Kalandar

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Tue, 21 Sep 2010

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Can Mathematics be taught?

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It might seem odd that someone who has come from a research organisation to one which is for education and research should ask a question such as the title! Some explanations are in order.

Mathematics is one of the oldest intellectual activities of mankind, so it is not surprising that the amount of mathematics that has already been done is enormous as compared with almost any other discipline. One consequence (that has not escaped notice!) is that people who prove theorems are often much older today than in earlier years.

Another important consequence is that for anyone active in mathematical research today, most mathematical learning has happened outside the classroom. Moreover, such non-classroom learning is far from linear. Monuments of mathematical beauty are built on wooden stilts; the latter are only turned into firm pillars when one finally writes down the fruits of one’s research.

The above paragraph is nothing new to working mathematicians, but each incoming generation must learn it anew. This is because courses and books in mathematics are often structured in a linear way. There are clearly defined prerequisites and everything new is either defined or proved in strict deductive order. This serves the important purpose that each fresh batch of students verifies the “grand edifice”. However, it also leaves many a student with the false impression that this is how mathematics is done. Even worse, it may leave the impression that classroom and textbook learning is what mathematics is about.

One should certainly strive to improve one’s classroom skills, to write more readable textbooks and to design better courses. However, one should never lose sight of the wide open spaces where many new mathematicial objects are built.


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