I usually teach my falling leaf lesson in first grade about four weeks into the year. On the old school calendar that was just about the time there was a bit of fall in the air. It would be hard to describe the last couple of weeks of 90 plus degree weather as fall-like, but first graders still had a good time constructing movement pieces with scarves and talking about life cycles and descending and ascending scales.
Meanwhile in second grade the kids were learning about work songs, specifically songs sung by sailors to help with the drudgery of moving cargo. As always I try to give them a little something of the experience (not the drudgery part).