Saturday, 15 August 2015 | 0 Comments
We had lots of good discussion on why some rules closed the spirolateral and some didn't.
Here's a PowerPoint to help with the initial instructions:
We also tried triangular grid paper.
We also explored further with this online interactive:
I only found this excellent interactive from Ken Wessen afterwards:
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Simon Job — eleventh year of teaching maths in a public high school in Western Sydney, Australia.
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