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【活动背景】学生在学习平行线和垂线的时候,举例说明“在同一平面内”时,迟迟找不到突破口,感觉似懂非懂。如何去突破“同一平面内”的认识和理解呢?如何让四年级学生掌握好这个知识点呢?【活动原因】四年级学生目前的知识水平和认知能力,决定了他们对“点”“线”“面”的理解多是建立在形象思维的基础上,也就是认知本身就局限在“同一平面内”。因此对“同一平面内”和“非同一平面内”
【Activity Background】 When students are studying parallel lines and vertical lines, they illustrate that when they “lie in the same plane”, they can not find a breakthrough point and they feel incomprehensible. How to make breakthroughs in the understanding and comprehension of “the same plane”? How to make the fourth graders master the knowledge? [Reason for action] The fourth graders’ current level of knowledge and cognitive ability determine their “ Point ”“ line ”“ surface ”understanding is mostly based on the image of thinking, that is, the cognitive itself is limited to “ in the same plane ”. So for “within the same plane” and “not within the same plane”