don steward
mathematics teaching 10 ~ 16

Tuesday 11 March 2014

harder cuboid surface area questions

a ppt is here
this work can involve linear equations,
and quadratic equations for the last two

question 10 on the first sheet is demanding....

an intention is for students to try out the various multiples of 10
form an equation and solve it

however, there is a more complex and direct approach:

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