Key Idea Recommendation 1: Space learning over time.
To help students remember key facts, concepts, and knowledge, this report recommends that teachers arrange for students to be exposed to key course concepts on at least two occasions—separated by a period of several weeks to several months. Research has shown that delayed re-exposure to course material often markedly increases the amount of information that students remember. The delayed re-exposure to the material can be promoted through homework assignments, in- class reviews, quizzes (see Recommendation 5), or other instructional exercises. In certain classes, important content is automatically reviewed as the learner progresses through the standard curriculum (e.g., students use single-digit addition nearly every day in second grade math), and this recommendation may be unnecessary in courses where this is the case. This recommendation applies to those (very common) course situations in which important knowledge and skills are not automatically reviewed.


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