Both learning and the demonstration of learning are time-extended processes. The former involves practice and repetition, resulting in a change over time. The latter typically consists of taking an exam or demonstrating a skill over a specified period. These activities will generally occur within the context of a course or a lesson, themselves things that span time. While timed examinations are ubiquitous in education, time is seldom considered in the context of student work process. Educators limit themselves by looking at work product detached from work process when assessing students. Time is the missing dimension.

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