Sinking and sanding wood

This afternoon we spent some time investigating how much weight (paperclips) it would take to sink various types of wood. We discovered that out of the five woods pine took the most paper clips ~15 and particle board sunk with ~5. Once we had completed that investigation we moved on to sanding wood. We investigated whether we could change the shape of wood by sanding and wondered how much sawdust we could accumulate as a class. Enjoy the pictures of our exploration below...