课堂中的即时评价对满足学生的多方面需要、促进学生的发展、全面实现课堂教学目标都具有重要的作用。本文从以下四个方面阐述了在化学课堂上进行评价的方法:在探究活动中合理评价,引导激励;抓住疑问,鼓励评价;学生互评,互相促进;巧观察,默评价。引导激励;巧问巧评,鼓励质疑;小组内学生互评,互相促进; The immediate evaluation in class plays an important role in satisfying students ’various needs, promoting students’ development and achieving the goal of classroom teaching in an all-round way. This essay elaborates the methods of evaluating in chemistry class from the following four aspects: to reasonably evaluate and guide the motivation in inquiry activities; to seize the doubt and encourage the evaluation; to make mutual assessment and mutual promotion among students; to observe and evaluate the value apparently. Guide incentives; Qiao Qiao Qiao Ping, to encourage challenge; mutual evaluation within the group of students, promote each other;