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Oct 16, 2018 at 15:15 comment added WeCanLearnAnything "...shown them the general formula, helped them demonstrate how it is deduced..." How did you check for understanding and retention when you helped them demonstrate how the formula was deduced? i.e. How do you know they were thinking the right way as opposed to just speaking the right words and writing the right symbols?
Oct 5, 2018 at 13:28 comment added bms The problem was not quite the same, but I've shown them the general formula, helped them demonstrate how it is deduced? and let them work on it with big numbers. The point is to indeed make them use the method without brute force. Avoiding the "listing all solutions" process (for some materials only) is one of the subgoals listed.
Oct 5, 2018 at 8:57 history answered Dominique CC BY-SA 4.0