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教材教法简析1.“长方体的认识”是在学生掌握了长方形的特征等知识的基础上进行教学的,是几何初步知识由平面到立体的扩展。教学时可从复习有关长方形的知识入手。2.长方体是小学生首次遇到的立体图形,是空间观念发展进程中的一次飞跃。充分运用直观教具,加强学生的操作活动,使他们先从感性上有所认识,这是形成概念的必要基础。3.从认识具体的实物模型过渡到学会看立体图是形成概念的重要一步。考虑到小学生空间观念比较薄弱,仍应从实物着手,逐步加以引导。
Teaching materials and teaching method analysis 1. “Cuboid understanding” is based on the students mastered the knowledge of rectangular features such as teaching, geometry is the initial expansion of knowledge from the plane to the three-dimensional. Teaching from the review of the knowledge about the rectangle to start. 2. The cuboid is the stereoscopic graphic first encountered by pupils and is a leap forward in the process of developing the concept of space. Making full use of visual aids, to enhance students' operational activities, so that they first have an understanding of perceptual, which is the necessary basis for the formation of the concept. 3. From the understanding of specific physical model to learn to see the perspective of the three-dimensional map is an important step in the concept. Taking into account the concept of primary school students is relatively weak space, should proceed from the physical, and gradually be guided.