Hi.... I am Harshika Tripathi have been in this field from last 11 years. What I think is when you teach someone it should practically explained so that the student get that point easily. My opinion is whenev er you reconduct any class or topic you get that topic in more enhancing way and that really help a student to understand. Well, I am Master's of Technology in Material Science and having a Research Experience also from CSIR -AMPRI. My Engineering is from Mechanical Branch. I am having 11 y + more - less