the end of the trimester...still not fond of teaching the year in segments of three (I prefer a full year term or two semesters), but am learning to fit a year's worth of curriculum into 12 weeks.
One of the seminars I took in grad school was in a Brazilian method of teaching rhythm.
I first tried teaching it last spring~each class gets a little bit better (and I've STILL no way of writing it out in our bureaucratic forms for curriculum.)
But! My kids are having SO much fun and they're collaborating and stomping and clapping and laughing for a full 50 minutes. That, to me, is successful education.