You have reached the point in your biology or life science class where you must teach cellular respiration. Do you approach it with dread and trepidation, or do you get all energized and excited? For many teachers, it is the former. The negative thoughts start swirling in their head: "This is so hard for the students. Students hate this topic! They never understand what I am trying to teach! How can I explain this in a way they can comprehend?" In my first years as a biology teacher I felt...