We worked on the mother's day gift this afternoon after the recess: each kid had a terracotta pot, the tables were put in blocs, there were glass pots with paints in them. 10 minutes before the end I said stop and they all obey, participating to clean the brushes, pots, tables, etc. It was perfect... Too perfect maybe? While putting the tables back together a student parted them and unfortunately there was a glass pots with the clean brushes in it... It fell and broke just as the bell rung... Took a deep breath, no one was hurt, send the kids with their bags in the corridor, closed the door and once I was back in my classroom i took a broom and now it's like nothing happened.