• Nell K. Duke
• 03 Jun, 2016

Consider the example of calendar time. In many U.S. early elementary classrooms, this practice eats up 15–20 minutes daily, often in a coveted early-morning slot when students are fresh and attentive. Some calendar time activities may be worthwhile. For example, teachers might use this time for important teaching around grouping and place value. But other activities are questionable at best.
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