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「等三秒」:教学里效应量最大的动作是闭嘴——Rowe 的等待时间实验,以及专家为什么做不到

【锚点】这一篇只回答一个问题:为什么一个不花钱、不培训、不改教材的变量——教师提问后等多久——能把学生回答的长度提高数倍? 【显式】先把三条事实摆出来。 - Mary Budd Rowe(1974, 1978)在小学科学课堂的录音里量到:教师提问后平均只等 1.0–1.5 秒,就点名、重述问题、或者干脆自己把答案说出来。 - 她训练教师把这段静默拉到 3 秒以上(wait time…

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