median
don steward
mathematics teaching 10 ~ 16

Friday, 12 May 2017

fraction cancelling

powerpoint here





















sometimes, as in question (7), you only part-cancel a fraction in order to find the nth term rule
sometimes, for other fraction sequences, there is a stray fraction that cancels - not part of the general cancelling rule
some features of an overall generalisation are relatively easy to discern
and others aren't (for me anyway)

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