When adopting task-centered methods faculty select a task or problem that is derived from the real world and that represents an appropriate challenge for the students. The task as a whole becomes the rationale for the learning. Most tasks will fall outside of the expertise of the learners, so instructors do help identify sub-tasks or parts of the whole and they provide support and guidance as learners practice those parts. The focus remains on the task or problem which is intended to provide a meaningful context for the sub parts. Teaching focuses on providing learning with the support and information they need in order to accomplish that task, but maintaining the whole task as the purpose of the subtasks.