An Exercise is a simple but powerful assignment. In an exercise the teacher asks the students to do a piece of practical work. It could be writing an essay or a report, preparing a presentation, or setting out a spreadsheet, etc. When the student has done the task they must first self-assess their work before submitting it to the teacher. Once submitted the teacher can assess both the student's assessment and the piece of work itself. The teacher can give feedback to the student and ask the student to improve the work and re-submit it or not as the case may be.