I start off strong with some whole group lessons on how to actually watch a video. Then slowly, as the kids develop some independence, I let them take over the video & we start doing some whole class activities together in class.
Sometime around the end of the 1st marking period I end up needing to change up my day-to-day lessons. This year we moved into a math workshop format. The students did really well with it...until they didn't. As soon as they got too comfortable, they started to waste a lot of time, and do a lot more talking (about non school stuff) than is really necessary. For that reason, we had to change things up a bit.
Right now my class is a hodge podge of things. We're at the end of our most difficult unit of the year (seriously, could double digit division be any more challenging????). I have some students who have already passed their test & are working to push their grade up to an "exceeding excpectations" mark. I have some students who are still stuck, and are getting some help, and I have a large chunk of students who are taking their test.
I plan to have math discussion groups using my math circles format when we begin our next unit. We've done this for a few videos in the last unit & the kids did great.
What will I switch to when this stops being effective? No idea! When asked what makes my classroom successful, I think it comes down to my ability to change when I realize something isn't working. Change doesn't have to be scary, I'd argue that it keeps things interesting.