Review on Learning Resources LER6644 Magnetic Ten Frame by Stephen Russian

I love this tool and use it in my class as a behavior management strategy (for both teachers and students). Unfortunately there are no extra dots in the pack and one of my students dropped a dot down the air conditioner vent on day 3 so now one is missing. Of course it can still be used, but it would be nice to have a few extras in case an accident is imminent.