"Participate in classroom activities" 表示参与课堂活动。这是一个通用的英语表达，主要用于教育术语中。

例句：

It is important for students to participate in classroom activities to fully understand the material.
(学生参与课堂活动对充分理解材料非常重要。)
The teacher encourages all students to participate in classroom activities to improve their Engpsh skills.
(老师鼓励所有学生参与课堂活动，以提高他们的英语水平。)

来源： 该表达来自英语教育术语中。