median
don steward
mathematics teaching 10 ~ 16

Friday 10 October 2014

growing rectangles
















 width of 2
width of 3
 squares













relating the perimeter to the numbers of inside dots


alternatively all three variables can be related to the (unknown) length (L) for the various (fixed) widths







you could also explore isometric shapes where the unit of area is the small equilateral triangle...







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