This consists of materials that can be used on a physical English bulletin board.
In most schools, there are lots of bulletin boards (看板, kanban) where flyers, posters, and other reading material can be posted. Some schools have these for the English department. These activities have useful informational material for English boards.
I would like to add files but keep getting errors.
Sorry, that might be part of a common bug that I need to fix! Can you try submitting the activity without files attached at first to see if that gives a different error message?
Are you trying to post at school? I've found I can no longer post when I use Explorer at school but Edge works fine. Although its gotten a bit slower.
I had to make sure I filled in every field and then it worked. I wasn't filling in the time that it takes for the acitvity.