Actually I think it was none of the above. Flipping is not a lifestyle for me, and not yet an obsession. It's a tool, and like all tools it does not fit every job. Furthermore, flipping can become mundane and less effective as the primary strategy for 30 weeks in a row. Sometimes we need a flipping break!
Our most recent unit was about westward expansion, specifically the experiences of pioneers on the Oregon Trail and other pathways to a new life. This was a significant departure from the previous 6-7 weeks of studying the Constitution, Federalist vs. Jeffersonian politics, and other governmental topics. Back to the "real people" of history!
There wasn't much homework at all -- these were our PARCC-testing weeks! Students wrote short diary entries in the voice of their character, which they could usually finish during class time.
My main academic objective is this unit was discussion participation. Below is the matrix of several discussion skills. Anyone who masters all of these would be the perfect discussion partner. For the several Trail Decisions, each class of 18-23 students had about twenty minutes of open conversation time to talk about their options. I sat on the side of the classroom; nobody had to raise hands. We have been building up to this all year long, so it wasn't a huge classroom change but it did require a lot from these 8th-graders.