It's interesting to see the students gain knowledge and confidence. They've got measuring down and now I've introduced laying out multiple cuts on a single piece of wood to minimize waste. I suggested that they measure the stock in both directions to see if that made any difference in how many finished pieces they could get out of it.
They've independently developed a system of cooperative production and quality control. An eraser is a favored tool. They now understand the level of precision required in what they're doing.