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一、说教材1.本节课是在学生初步掌握了长方形的特征和周长的计算方法,知道了面积的含义,初步认识了面积和会用面积单位直接量面积的基础上学习的。本节课是图形面积计算的开始,也是以后学习平形四边形、三角形等面积计算的基础。2.本节课的教学目标是,能探索总结出长方形面积的计算公式;会运用公式正确计算出长方形的面积;做到认真操作、积极思考、主动探索。
First, the textbook 1. This lesson is in the initial grasp of the students the rectangular features and perimeter calculation method, know the meaning of the area, the initial understanding of the area and the area will be used directly on the basis of the amount of area to learn. This lesson is the beginning of the calculation of graphics area, but also the basis for learning flat quadrilateral, triangle area calculation. 2. The teaching goal of this lesson is to explore and sum up the formula for calculating the area of a rectangle. The area of the rectangle will be calculated correctly by using the formula, and careful operation, positive thinking and active exploration will be conducted.