This document contains notes from a math class discussing applications of the Pythagorean theorem. It includes instructions for students to fill out their scantron at the start of class and examples of using the theorem to find the diagonal of a SMART board, the distance from home plate to second base in baseball, the length of a property boundary given two other measurements, and the depth of a submarine located by sonar. The document provides real world contexts for practicing calculations with the Pythagorean theorem.