Yesterday was definitely productive.  As subbing jobs go, it would have normally been very boring, but the teacher warned me that 1) he'd be doing the opening part of each class and 2) I'd be proctoring a test, and so he told me to bring something interesting to do.  So I brought The Big Book of Riddles, Puzzles and Enigmas, and have worked through the first 73 pages, flagging each puzzle as 'logic'*, 'algebra', 'geometry', and in one case, 'probability'.  I've been wanted to do this for a year or so now, to have a collection of puzzles I could draw on to support introducing various mathematical concepts.  I'm now done with Part I, with three more Parts to go, and my system is pretty well set up now.  Yay me!


In the meantime, I'm still trying to get over this cold.  I've never been sick as often as I have this fall, and this bug is very much like the last one.  It starts out as a cold, culminating in about 7 days in a fairly high fever for one day, and then goes back to dragging on as a cold.  I'm now at two weeks since I first noticed the symptoms starting to cluster, right at the icky-cough stage.  I've coughed enough that my side hurts and I understand how folks fracture ribs this way.  I'm ready to be done now, any time!

*which includes number and set theory.