Consider Available Time

All aspects of educational design need to take into account the time that the teacher and student will have, both together and independently. This may usually occur when the desired goals are too broad and the instruction and assessment will take too much time. However, it may be that some instruction is extraneous or unnecessary. A less likely situation is when not all of available time is used, or used well. This can provide more time for activities that support a goal, or the addition of new goals. (Carver & Klahr, 2001)