Musings on substitution

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2 Responses

  1. Hope Gerson says:

    I’ve done something like this with simplification. For instance x^4 can be substituted for xxxx. I did it as a whole class activity. I think a demonstration would have gone better. But it was definitely fun.

  2. Bryony says:

    I have done something similar and played a you tube clip from a football match. I play dumb and ask if i am losing can i take the goalie off and put 6 strikers on in his place to get them to stress importance of equivalent substitution