青岛版小学数学三年级上册《平移和旋转》反思）.doc

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1、青岛版小学数学三年级上册平移和旋转反思）平移和旋转教学反思 平移和旋转教学反思 “平移与旋转”是小学三年级第三单元的教学内容,这个内容是以学生已有的生活经验为背景，将数学知识与生动形象的现实生活密切联系起来，使学生在一种很真实、自然的状态下感受、体验、理解生活中的平移与旋转现象，进而通过区分物体的平移和旋转两类运动，描述见过的平移或旋转运动等学习活动。在教学这部分内容时，他进行了如下的尝试：过程方面 1.把数学知识与生活现象密切联系起来。我在设计这节课时，选择了开风扇、关门、擦黑板、移动粉笔盒、时针和分针的旋转等许多真实的生活事例，让学生从这些活生生的现象中感受平移和旋转，体会到原来数学是这么

2、地贴近我们的日常生活，它就在我们的身边。2.让学生观看书上的主题图，看缆车沿笔直的索道滑行、国旗沿着旗杆徐徐上升、直升机起飞时的螺旋桨运动、小风车迎风旋转的画面，结合讲解，对平移和旋转有了一个大概的了解，知道平移的特点是：直直的，方向不变；旋转是围绕一个点做转动。初步感知平移和旋转的现象。3.通过辨析平移和旋转现象，寻找自己身边的平移和旋转现象，学生举出的例子如：汽车行驶是平移现象，而方向盘的转动却是旋转现象等等。进一步强化学生对这两种运动现象的认识，体会平移和旋转这两种运动的不同特征，感受它们的普遍存在。4.让学生用肢体语言表示这两种不同的运动现象，能够使他们获得感性认识，加深理解。大部分学

3、生都是向前走几步表示平移，把手臂使劲地晃几圈表示旋转，还有一个小组的学生手挽手向前走几步是平移，然后一个学生不动,学生围着他转了一圈是旋转。做这些动作时，学生很感兴趣，虽然教室里乱哄哄的,但是可以看出学生已经知道了平移和旋转本质的不同。成果方面：1.这一堂课，他始终将学生放在主体地位，课堂真的变成孩子展示的舞台 。2.在探究问题时，给予了孩子足够的时间，让他们在自主观察、思考、操作、讨论、交流、中探究知识，找出自信，数学的学习。3.孩子对数学产生浓厚的兴趣。结束语！祝大家学到有用的知识，提升自己的能力，实现自己的梦想，踏踏实实干好每一件事，为美好的明天而努力！16n,wkr0weupr9z5,

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