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教科版五年级下科学教案4地球的运动怎样证明地球在自转
教科版五年级下科学教案4地球的运动怎样证明地球在自转
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2019-05-06 03:17
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何援军
教学目的：1、知道摆具有保持摆动方向不变的特点.2、通过有关“傅科摆”的资料,初步理解“傅科摆”证明了地球在自转.3、初步认识昼夜交替现象与地球自转有关.4、认识到地球自转虽然不能直接观察到,但是能通过实验证...
2019-05-06 03:20:33
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