There was one student who talk too much in my class. At first, I though he is so annoy and distress other students by talking during the classes. But, when i ask his's aunt about him , she explained that he was the only child in his family. His parents had to work most of the time to complete their needs and could not stay close to their child. For these reasons, the child only had chance to talk when he came to class. And i learned that there could be reasons on students bad behavior and we had to observe those and help them to be able to study like other students happily and comfortably.