Working Backwards

So far I feel like the most significant lesson I am learning from class is how to most effectively plan a large unit that encompasses many different instructional aspects. Specifically, I am realizing the order in which I like to create the various components of such a unit--I feel like I need to start at the very end of the unit first. I need to determine my distinct vision of the product I want the students to end up with and then work my way back to decide how I'm going to assess them, what materials/resources they're going to use, what questions they're going to ask/answer, and what standards they're covering. I prefer to have the "big picture" first, and then once I have that I can begin to assemble the smaller pieces.