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【设计理念】本节课是在学生初步掌握长方形和正方形的认识及它们的周长计算的基础上教学的,在设计上充分考虑为学生参与学习过程创设条件,使学生在原有认知的基础上能较好地完成新知建构过程。活动中,让学生亲自摸一摸物体表面,动手涂色、观察平面图形的大小,为“面积”概念的形成做好铺垫。【活动目标】1.通过直观观察、动手操作等活动,使学生理解面积的意义。2.在解决问题的过程中,使学生体验建立面积
[Design Concept] This lesson is based on the students first grasp the knowledge of rectangular and square and their perimeter calculation based on the teaching, designed to give full consideration to the conditions for students to participate in the learning process to create the conditions for students in the original cognitive foundation On a better completion of the new knowledge building process. In the activity, let the students touch the surface of the object in person, do the work of painting, observe the size of the graphic, and pave the way for the formation of the concept of “area”. 【Activity】 1. Through the visual observation, hands-on activities, so that students understand the meaning of the area. 2. In the process of solving problems, make students experience the establishment of area