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Examples in mathematics

27 bytes added, 03:08, 19 February 2019
Unit testing and examples
In giving examples, it is particularly important to give examples in the places where intuition and the formal definition disagree. By default, the [[learner]] may have a tendency to [[wikipedia:Peter Cathcart Wason#Wason and the 2-4-6 Task|search only for positive examples]].
One can view the giving of examples as analogous to writing [[wikipedia:Unit testing|unit tests ]] in programming. It is good to have some obvious examples, but one also wants to test the software on surprising cases (called "edge cases") to make sure the software really works.
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