The basic difference is that quiet can mean little or no noise, but silent means ZERO noise. If you describe somebody as quiet, it means that person doesn't talk very much. People can also talk quietly (with a very low volume) but itís impossible to talk silently!
Students who struggle with class work can sometimes feel frustrated and get down on themselves, draining motivation. In these situations it s critical that teachers help students to learn exactly where they went wrong and how they can improve next time. Figuring out a method to get where students want to be can also help them to stay motivated to work hard.