A note and reminder

Fifth and sixth years: Madam Umbridge will be observing our evening teaching sessions tonight. I’m sure you will give her every possible courtesy. It does look like it may stay clear, so please come prepared to work outside.

Fifth years: we’ll be coming back to locational magic theory in lecture next week (and your observing tonight will relate). If you still have questions about what we’ve covered so far, please have them ready for your next lecture. Or ask here. (Beyond the usual reasons you might want to learn something, yes, it will be on your OWLs.)