From the study of students in the classroom, most drug use almost constantly mobile, while the teacher is teaching. Where there is no intention or interest in the subject taught.
According to the study, students in the classroom, most addictive mobile use almost all the time while the teacher is teaching. It has no intention or interest in the subject teacher.
From the study of the students in the classroom the most addictive hand hold almost all the time while teachers are teaching. Which has no intention or are interested in what the teacher.