Blackjack and the End of the Semester

I finished this shawl (Blackjack by Romi Hill) a couple of weeks ago, but it took me a while to block it and then photograph it. There are glass beads at intervals along the bottom edge that make it hang nicely. I made an obvious error in the middle just above the area in this photo (it looks like the yo's are stacked instead of alternating) and I didn't get the bind off coordinated correctly with bead placement. Still, I think it's all right and I'm happy to have finished it after having the yarn and pattern in stash for something like four years.

On today's homework, my students struggled to write an acid dissociation equilibrium. This was something from last semester (and actually from before that). One wrote the reverse of Kb, another must have written and erased a bunch of times because the paper is all soft and fuzzy (but still wrote a Kb equation). All we did in class this morning (our last lecture period) was a quiz. I haven't looked at the papers yet, but nobody finished in less than 45 minutes. Most students took an hour. I fear it will be ugly.