教学目的: (1)使学生理解并掌握最简二次根式概念; (2)使学生理解并掌握同类二次根式概念; (3)使学生在前面学过的根式化简的基础上,进一步掌握把一个二次根式化为最简二次根式的方法。 教学过程: 一、复习提问 Objectives of teaching: (1) To enable students to understand and master the basic concepts of the simplest secondary roots; (2) To enable students to understand and master the concept of similar secondary roots; (3) To make students further based on the basic simplifications they learned earlier. Master the method of converting a secondary root to the simplest secondary root. Teaching process: I. Review questions