Hello, I think the most illustrative example of how your teaching could be improved was in one of your last lectures, when drawing the example of convolving a Dirac Comb with a 'triangle' function (you redraw it twice, as I recall). I only realised what a good example this diagram was after about 10/15 minutes of looking/thinking at it and realising what it was/what you meant... So, yes, your intentions and material was good, but the clarity was a bit wobbly. Sorry this is a bit late, and via a funny source but hey, its feedback. And no, I wasn't taught anywhere near enough pure maths at school. It's a way of thinking I still can't do properly.