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1设计说明1.1学情分析笔者所在学校在全区统考中数学成绩多在全区前五位。笔者所任教班级多数学生思维较活跃,主动参与、自主探究意识和能力相对较强,但也有少数学生在知识的理解、应用上尚存在一定不足。本节课的复习重点是强化轴对称和中心对称的理解、应用,引导学生掌握中考基本题型的通解,掌握对称性和坐标特点相互转化技巧。难点在于如何培养学生积极发掘几何图形、函数图像的对称性并将之坐标化。
1 Design Notes 1.1 Academic Analysis The author’s school’s mathematics scores in the district’s overall examination are mostly among the top five in the district. The majority of students in the teaching class of the author are more active in thinking and have relatively strong awareness and ability to take the initiative to participate in and explore independently. However, there are still a few students who lack knowledge in the understanding and application of knowledge. The review of this lesson focuses on strengthening the understanding and application of axisymmetrical and central symmetry, guiding students to master general solutions to the basic questions in the examination, and mastering the symmetry and coordinate transformation techniques. The difficulty lies in how to train students to actively explore geometrical and functional image symmetries and coordinate them.