Mona Gray is a 20-year-old loner who, as a child, turned to math for salvation after her father became ill. As an adult, Mona now teaches the subject and must help her students through their own crises.
Videos stop working when youtube (or youtube clones) deletes the video. Youtube will delete ANY video when someone complains. So tell us when a video is deleted so it can be replaced with a another copy. Thank you for your understanding.
