An Invisible Sign (2010)

An Invisible Sign

An Invisible Sign 123movies: family movie from 2010 starring Jessica Alba and Bailee Madison, with a viewer rating of 5.2/10. 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.