don steward
mathematics teaching 10 ~ 16

Friday, 21 October 2016

triangle areas, various ways

rather big numbers (use a calculator)
the intention, advocated by Ed Southall (solve my maths), is for students to decide which dimensions they need in order to work out the area of a triangle

then they can be asked to calculate it another way
(and possibly a third way)

the areas are:
(1) 150
(2) 5,070
(3) 302,580
(4) 1,227,930

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