A3 practical: Range of a rubber band support
This practical is probably one of my cheapest yet (apart from the computer used for processing of course). An elastic band, protractor, ruler, tape measure and some blu tac is pretty much all that is required. I also used a couple of metal blocks and a G clamp to support the ruler as you can see in the photo. I haven't done this one with a class yet but I have done it myself and found that you have to be extremely...