In my graduation period I used to be confused about the teel structure, why we need it and how it would be helpful in writing assignments. So let’s start from its definition first. Topic Sentence, Explanation, Evidence and Link .Here the meaning is that choose interested one topic , explain it deeply /thoroughly each and every thing ,if you feel sometime your explanation is not sufficient to make understand students then in this case attach evidence or source where they gathered information  easily. And if you want to make assignment first is collect more data and structure it. Definitely you will get results from this technique.