《化学课程标准》明确指出:“有效的化学活动,不能单纯地依赖模仿与记忆,动手实践、自主探索、合作交流是学生学习化学的重要方式。”“教师应向学生提供充分从事教学活动的机会,帮助他们在自主探索和合作交流的过程中真正理解和掌握基本的化学知识与技能、化学思想和方法,获得广泛的 Chemistry Course Standard clearly states: ”Effective chemical activities can not rely solely on imitation and memory, hands-on practice, exploration on their own, and cooperation and exchange are important ways for students to learn chemistry.“ ”Teachers should provide students full employment Teaching activities to help them truly understand and master basic chemical knowledge and skills, chemistry ideas and methods in their own exploration and cooperation and exchange, and obtain a wide range of