text: If students are told to do a project about something they have no interest in, they either wont complete it, or will do a bad job on it. Especially without the teacher being right there to answer any questions they might have about the assignment. Students that get to choose their project will have more drive to want to do it, because its something they are interested in. They won't look at it as an assignment but as a learning experience for them to learn more about what they already enjoy.