This is a math-related post. I’ve tried to keep it as broad-minded as possible because, as much as I believe I’ve found the best way to assess mathematics, I haven’t the foggiest how to translate it to other disciplines. And I need help.
(Prerequisite: It’s essential to assess math by concepts and skills rather than by chapters, for reasons I outlined here, but specifically in this case because assessing by concepts means I can remediate like a pro. A student comes in with a low overall grade in hand and I know exactly which of our (currently) 21 concepts are bringing her down. We tutor, we reassess, grades go up, comprehension goes up, everyone’s happy.)
Ranking a close second in importance to concept-based assessment is the selection of good concepts. Here’s where I almost went wrong this last week.
We’ve been assessing Cones (#19) for a couple weeks now. It’s a straightforward concept. All you need to find the surface area of a cone is the slant height (19 inches in the picture) and the radius of the circular base (7 inches).
(more…)