This lesson is about the importance of friction in our lives. It discusses the meaning of friction as well as the different types of friction. The lesson attempts to downplay the misconception that many people have regarding friction’s hindrance to movement and work. We focus on developing the student’s skill with calculating the coefficient of friction by using lessons with numerous activities ranging in difficulty and procedure. For example, the first activity is to make a distinction between the movements of objects on different surfaces, whereas the second activity focuses on the types of friction and what affects each of them. In the middle of the lesson, you will find activities to link the student’s theoretical and practical studies. This is done through an interview with a mechanical engineer who demonstrates the importance of the use of oil in cars to reduce friction and engine temperature. The last activity centers on how to calculate the coefficient of static and dynamic friction and their different behaviors depending on the surface.