《新课标》明确提出:“在教学时,要遵循学生的认知规律,重视学生获取知识的思维过程。通过操作、观察,引导学生进行比较、分析、综合,在感性材料的基础上加以抽象概括,进行简单的判断推理。”可见,在教学中要培养学生的观察思维能力、动手操 “New Curriculum Standard” clearly states: “In teaching, we must follow the students ’cognitive rules and attach importance to students’ thinking process of acquiring knowledge. Through the operation, observation and guidance of students in comparison, analysis and synthesis, on the basis of perceptual material To be abstract summary, a simple judgment reasoning. ”Visible, in teaching students to develop the ability to observe the thinking, hands-on exercises