Abstract
This paper is action research on the design of activities for successful ice-breaking in Japanese language classes, based on reflections of teaching practice conducted over three terms at Akita International University's Graduate School. I strongly felt the need for ice-breaking in online classes and conducted several activities during the teaching practice, but the number of interactions varied depending on the activities. This paper examines and analyses, from the perspective of activity design, whether the three ice-breaking activities conducted during the teaching practice were appropriate for achieving the three purposes of ice-breaking: (1) tension reduction, (2) relationship building, and (3) preparatory exercises. I then present measures to improve these activities and propose suggestions for future ice-breaking activities for online classes.