Monthly Archives: November 2020
This blog post is about the Solving Problems poster that has been on the MLC wall for more than ten years in one form or another. The most current version of it in handout form is this:
You can download this handout in PDF form here.
I’ve been meaning to blog about it for some time, but […]
This blog post is about a new variation on the classic Quarter the Cross problem, which I call Quarter the Cross: Connect the Dots.
Here is the original Quarter the Cross problem:
To catch you up, here is everything I’ve written about Quarter the Cross up until now:
Quarter the Cross — in which I first learn about […]
This blog post is about a metaphor I use when I think about the order of operations: the idea that the various operations are stickier than the others, holding the numbers around them together more or less strongly.
The idea begins with the fundamental idea in arithmetic, that maths working proceeds by replacing something with something […]