Twin Rivers and Johnson Elementary use the SWUN Math program. The Swun Math Lesson Design carefully matches the eight required shifts in the Standards of Mathematical Practice, and inherently includes a gradual release of responsibility to students. Central to the instructional approach is the belief that, in addition to performing accurate calculations, students must also be able to articulate their math reasoning in order to achieve true mastery of the content standards. To that end, students rely on teachers to provide ample opportunities for successful computational practice and the development of procedural fluency. In addition, teachers must provide explicit instruction for their students to develop proficiency with math vocabulary and fluency with the language needed to explain their thinking.