This paper presents research about the blended learning that is carried out in the classroom using the Learning Management System; we have conducted a time series analysis by utilizing the viewing times of digital teaching materials that have been stored in the LMS.We have proposed the creation of a time series cross table for looking through the students' reactions numerically,along with the teacher's instructions,regarding the browsing of digital teaching materials.The proposal of the time series cross table indicated parts of teacher instruction that might not be clearly understood; thus the benefit of its utilization for future class improvement was revealed.