I like teaching surface area, I think it’s an interesting topic. Yet, I find kids struggle with the concept. Not understanding the basics of area and then getting over the prior knowledge of solids meaning volume are two aspects that cause some difficulty.
This is a great interactive for representing simple inequalities on the number line: Inequalities with GeoGebra.
Returning from a few weeks leave, it wasn’t clear where my Year 8s were up to. I figured they had started looking at grouped data, but I didn’t want to repeat work they might have already seen.
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Simon Job — eleventh year of teaching maths in a public high school in Western Sydney, Australia.
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