In classes where students are actively involved in learning, signs of their learning appear in various ways. For this reason, it is presumed that each observer notes different things in their classroom observation. In this research, we developed a classroom observation tool called “edulog.” This tool can accumulate observation records and list all gathered data on one worksheet.6 people observed the classes using the “edulog.” It was suggested that, in a lecture style class, the observers tend to focus more on teaching, whereas in an activity-centered class, their focus is more on the learners; in addition, it was confirmed that observation viewpoints tend to vary. These results revealed that each observer had a different point of view in their observation. The above results indicate that, in classes where students are actively involved in learning, it is required to visualize and share observers’ different viewpoints, as well as the possibility of the “edulog” as a tool to be utilized in such a lesson study. It is also required in future research to develop and examine a new system of lesson study aiming to realize deep active learning.
