In this episode, Breaking Barriers: Solving Linear Equations, students learn about supersonic aircraft while investigating the nature of science. They look at how NASA researchers continue to modify their work as powerful machines are built that push hypersonic records to Mach 10 and beyond. NASA engineers and scientists use algebraic equations to help them build models that will fly faster, longer and higher. By conducting inquiry-based and web activities, students connect NASA research with the mathematics, science, and technology they learn in their classrooms.