An Invisible Sign

An Invisible Sign

DVD - 2011
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Mona Gray has lived in a hidden world of numbers since her father became ill when she was a child, now at age 20 she helps children discover the joys of math when she finds herself teaching an elementary school math class.
Publisher: Orland Park, Ill. : MPI Home Video, 2011.
Edition: Widescreen.
ISBN: 9780788613746
Characteristics: 1 videodisc (96 min.) : sd., col. ; 4 3/4 in.
Alternative Title: 1nvisible si6n.


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