After all the "heavy" aural training and scale writing, I like to add something light and fun. Here's Unit 8, an interesting diversion of ties, slurs, and intro to dynamic and style markings.
I like to do a quick Italian language pronunciation lesson too, and have kids yelling "CrescENDO!" by the time they're leaving class.
As always, I teach why things are the way that they are. What's the point of a slur? Why do ties exist in the first place?