Perhaps this one should have been called ‘Geometric dot ripples’…

Today’s Gratitude Item: Well trained students. At the end of each term we get to stack the chairs and desks in a corner so that the room can be cleaned in the holidays. When we get back, everything needs to be put back to normal. My students have got this down to an art form and it is great to see them getting the job done with minimum fuss and a fair bit of good humour.