This is the last topic in the 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. In this section, three videos are included that show students how to solve word problems of systems of two equations. This section builds on everything students have learned in the previous videos about working with polynomials and exponents as well as methods for solving systems of two equations. See the main Math Video Resources page for an introduction to this video series.