This document provides instructions for students participating in an online lesson on calculating body mass index (BMI). It outlines equipment and materials needed, participation guidelines, and the agenda. The lesson will define BMI, demonstrate the calculation formula, have students work through a sample problem in breakout groups, calculate their own BMI, and determine if it is in a healthy range. Guidelines include using audio/visual tools carefully, raising a virtual hand to speak, writing clearly on the whiteboard, and contacting the instructor if technical issues arise.