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建模点1:“面积和面积单位”模型所属内容:信息窗1(第50页-54页)教材简析:面积概念,是一个重要的起始概念,是建构本单元其他模型的基础。信息窗1呈现的是爸爸拿着图纸带着一家人看新房的情境。画面的右下角是这套新房的平面图。借助问题“餐厅和厨房哪个面积大?”引入对面积的意义和面积单位的学习。通过该信息窗的学习,引导学生能在实际情境中初步理解面积的意义,认识常用的面积单位,建立1平方米、1平方分米、1平方厘米的表象。初步完成对面积的意义和面积单位的建构。教学建议:1.感知交流,建立“面积”模型教学时,教师由“买房”的话题引
Modeling Point 1: “Area and Area Unit ” Model Belonging: Information Window 1 (pp. 50-54) Textbook Analysis: The concept of area is an important starting concept for building the other models of this unit basis. Information window 1 presents a situation in which Dad took the drawings with his family to see the new house. The lower right corner of the screen is a plan of this new home. With the help of the question “Which area of the restaurant and kitchen is large?” Introduces the study of the meaning and area of the area. Through the learning of this information window, students can be guided to understand the meaning of area in the actual situation and recognize commonly used area units to establish the appearance of 1 square meter, 1 square decimeter and 1 square centimeter. The initial completion of the meaning of the area and the construction of the area unit. Teaching Suggestions: 1. Perception communication, the establishment of “area ” model teaching, teachers from “buy a house ” topic