I am in need of some advice..... last year, I was moved to a "new" classroom that was built inside the old gymnasium at my school. I like almost everything about my "new" room, but the problem is that the floor, being a gym floor, is hardwood. The chairs I have for the students make so much noise on the floor that as soon as one person moves, no one can talk over it! I have heard of tennis balls on the legs of the chairs as a solution, but at 28 chairs with 4 legs each, this could be expensive!! I was wondering if anyone out there knows of any other solution to quiet those chairs down? Thanks!