Provide flexibility so that lessons can be reconfigured to meet specific goals

This suggestion is more for the convenience of the teacher than anything else. Lesson plans are time consuming to develop. Therefore, any time a lesson can be reused it saves a substantial amount of work. Also, since schedules in a classroom are often unpredictable, a lesson may need to be altered to fit into an allotted time or introduce an important topic quickly. It is useful to keep possible alterations in mind while creating a lesson plan.