Adapt for high school .*FREE* Quick and easy notes to staple to unfinished work. Each note has a quick checklist, so that the teacher may note why the student has unfinished work. A blank has been provided for additional reasons/notes.
This is an activity that is usually used in math class, but I think it also works really well as a revision tool! Simply write an answer on the board, students then write questions to match the answer.