What were you doing when..?
This is something to practice the past continuous and then have a whodunnit style conversation. Everyone should have a copy of the house above. Then they should draw in the picture what they were doing on Saturday morning at 11 a.m. (doesn't have to be true). After that everyone in the class then asks each other what they were doing that day and then adds them in their picture until they have everyone drawn in their house.
Find out what people were doing when they've finished and then reveal some things that happened in the house (could be another slide) for example a window was broken in the living room, or there was a murder in the garden, some smelly socks in the bedroom etc. Have a nice orderly debate about who it was and why - related to where the students were and what they were doing in the house. Got it?