论文部分内容阅读
教学目标 :1 使学生进一步掌握简单组合图形面积的计算方法 ;2 会观察 ,找出隐蔽条件 ,正确计算组合图形的面积 ;3 通过寻找不同解法和设计组合图形 ,培养学生的创新精神。教学重点 :明确组合图形面积的计算思路。教学难点 :找出计算组合图形面积所需的隐蔽条件。教具准备 :投?
Teaching objectives: 1 to enable students to further grasp the simple combination of graphics area calculation method; 2 will be observed to find hidden conditions, the correct calculation of the area of the combination of graphics; 3 through the search for different solutions and design portfolio graphics to cultivate students' innovative spirit. Teaching focus: a clear combination of graphics area calculation ideas. Teaching Difficulties: Find out the covert conditions needed to calculate the combined graphics area. Teaching aids to prepare: cast?