This is the sixth 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 sixth section, two videos teach students how to solve quadratic equations using the square root property. See the main Math Video Resources page for an introduction to this video series.