Mathematics for Teaching Tag: thinking habits

Tag: thinking habits

Churchill on mathematics and mathematics education

The mathematicians concern themselves with doing mathematics at high level of abstraction. The mathematics educator concern themselves with what it is that one does when doing mathematics and what kind of experiences are propitious for a person’s later successes. – P. Thompson. According to Thompson, the following quote is a paraphrase of what Winston Churchill said…

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Why negative times a negative is positive

Among the ‘rules’ for working with negative numbers,  the most counter intuitive is “negative times a negative is a positive”. It is easily forgotten especially if it was learned by rote. It is also not an easy ‘rule’ to make sense of so it needs to be learned with conceptual understanding. Here’s my proposed lesson for…

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