Prepare the classroom before the children arrive for classes.
I took out a small group of pupils to help them learn the basics in computers & I got them to work out solutions to problems on computers .
I had to on one occasion take a class in French as the their usual French teacher was ill & the teacher who was in charge couldn’t speak any French but I could.
With the children who were having problems & not keeping up with their fellow classmates I would help them in any way I could especially with spelling.