It's been great fun to plan and watch, and the kids seem to enjoy the process. One day this week, I needed some additional space to make some notes, and erased one of the whiteboards, and the students from that group complained that I did so. They clearly took pride in what they had been thinking (as most kids appear to so, since they often take pictures of their work before the end of class when we erase all the boards). I apologized to the group for erasing their work prematurely, and promised I would not so that again.
In my Precalculus class, we're starting our unit on the trigonometric functions. To start class, I sat in the middle of the floor with the kids gathered around, and drew a picture of a bicycle. Apparently it was a really bad picture, as the pedals were not connected to the frame, and no one was sure which side had the handlebars and which side had the seat. After straightening that out, I indicated that the bike had ridden over a piece of gum which got stuck to the wheel, and rotated around. I asked the students to make a graph showing the relationship between the height of the gum from the ground and the time. Here are some of the results: