I do consider what I will be leaving for my supply/HLTA when I plan for the week in my planning session the week before. I try not to leave things that require too much reliance on previous lessons as they won't know what we've done. I leave a timetable for the day, with a written commentary for each lesson. In each lesson I detail the books to be written in and the LO, then describe (in as much detail as I think is necessary) the activity to be followed by the children to achieve the lo and the differentiation required for my groups. I leave the logon details for everything and the groupings of my children. In some cases I will leave the planning page from my scheme for a particular subject (e.g. the abacus teaching sequence for the lesson). If I can, then I will provide this info earlier than the day it is to be delivered. E.g. the teacher taking my class on Tues was in last week, so I left the info then in case they have any questions when they are next in. It takes a little time to leave the commentary and to leave the resources for the day, but I don't resent it. If I am out on a course then I still receive the same amount of PPA than if I was working the full amount. If someone wanted to be picky then they could reduce my ppa to reflect 10% of the time I was teaching that week, minus the day I was out on the course and they don't so I am happy to still plan and resource that day properly myself.