This is the first 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 first section, three videos explain how to solve liner equations including those with fractions and grouping symbols. After viewing the videos, students can test their knowledge through a variety of practice problems. See the main Math Video Resources page for an introduction to this video series.