A rather confused discussion of this statement appeared recently on http://www.linkedin.com/groups?home=&gid=33207&trk=anet_ug_hm Here is my take on things: Division by zero is undefined whether you work with real numbers or complex numbers. Khan’s video on the subject is a bit confusing. The consistent exposition of algebra is given in Euler’s “Elements of algebra”. There division is defined by saying that a/b=x, a unique […]
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Timely Feedback
Many worry these days about providing students with a meaningful and timely feedback. Many try using modern technology – audio feedback and such. While very useful sometimes such approaches can be very time-consuming and not necessarily better than a time-honoured and low tech solution – the Socratic dialogue. Most teachers I know think […]
