This collection of videos is part of a series of lessons on math provided by DeafTEC. Gary Blatto-Vallee, a math and science instructor at the National Technical Institute for the Deaf, guides viewers through a variety of mathematical exercises in this DeafTEC video series. All lessons are fully captioned, signed in ASL, and voiced. This collection includes the following nine different videos: Factoring Perfect Square Trinomials, Factoring Trinomials #1, Factoring Trinomials #2, Factoring Trinomials #3, Factoring Trinomials #4, Factoring Trinomials with Common Factors, Factoring the difference of two squares, Grouping Method #1, and Factoring Method #2.Â