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教学内容:西南师大版《义务教育教科书·数学》五年级上册第82页例1、试一试及第84页相关习题。教学目标:1.经历三角形的面积计算公式的推导过程。2.探索并掌握三角形的面积计算公式,能正确应用计算三角形的面积计算公式解决问题。3.体验转化的数学思想,培养学生的空间观念和推理能力。教学重点:探索并掌握三角形的面积计算公式,能正确计算三角形的面积。
Teaching content: Southwest Normal University version of “compulsory education textbook · Mathematics” fifth grade on page 82 Example 1, give it a try and the relevant exercises on page 84. Teaching Objectives: 1. Experiencing the process of deriving the formula for calculating the area of a triangle. 2. Explore and grasp the area of the triangle formula, the correct application of the triangle area calculation formula to solve the problem. 3. experience the mathematical thinking of transformation, cultivate students’ space concepts and reasoning ability. Teaching focus: Explore and grasp the triangle area calculation formula, can correctly calculate the area of the triangle.