This is what school should be like. This is what science should be like. There are so many cool things about this. But you cannot write a concrete outcome, a specific essential learning or create a test before you start for the whole class. Report cards and standardized curriculum get in the way. Congrats to the teacher who was willing to take a chance. Kids are asked to take chances all the time, but we teachers are expected to know all.
There are so many pedagogical good things here that remind me of the GRAND Projects that we used to run at RHS, the brain child of TIm Beatty.
But from a logistics point of view, this is so good because it is simple, the materials are relatively easy, the research is real, the answer is valuable, and there is no right answer. The trick is to find other examples that are not pre-fab, standardized, pre-packaged, out of the box. This is something to aspire to, and the younger the grades..the better. It reminds me of Preston Middle School activities with their animal guzzler.