median
don steward
mathematics teaching 10 ~ 16

Monday, 13 June 2016

stairs steepness

the powerpoint is here

the idea for this task is from Malcolm Swan and Jim Ridgway
(creating measures for steepness)





some neat lessons on the task are described by Fawn Nguyen

some scale drawings of staircases are shown

students write down the letter of the staircase they think is the steepest
then the next steepest
and so on
until they think they have listed them all in order of their steepness (most down to least)


(without using any form of measuring device, initially anyway)
they then consider how they might measure the steepness to check whether their order is reasonable or not

what could they do if protractors are not made available?






No comments: