当前的线上教学暴露出在线教学的形成性评价亟需完善等问题，学生课前预习和课上学习的情况不能得到及时反馈，阻碍了教师针对性教学和学生自主学习.本文提出一套随堂教学效果评价实用方法. 通过设计客观合理的课前、课后测试卷，借助“雨课堂”在线平台进行简便高效的随堂测试，帮助教师及时掌握每位学生的预习和课上学习效果，从而有助于教师在课上、课后的针对性教学.同时也帮助学生及时发现各自预习和课上学习的不足，有利于学生针对性地听讲和复习，激发自主学习的动力.

It is a serious problem in online classes that current formative evaluation of online

teaching is defi- cient. For instance，the situation of students’pre-class preparation and

in-class learning cannot be reflected im- mediately. This has hindered teachers from

targeted teaching and students from autonomous learning. A practical method of teaching

evaluation is proposed in this paper. By designing objective and scientific pre-class and

post- class tests and using the " Rain Classroom" online platform to perform these tests

conveniently，teachers can effi- ciently measure the pre-class and in-class study performance of

any individual student. Thereby，it helps teachers carry out the targeted teaching before，in and

after class. It also helps students find their misunderstanding in their preparation and class

learning，improves their targeted learning and revision，and even stimulate their motivation of

autonomous learning.