There are many reasons why discipline can be a problem in your classroom. One of the reasons could be your teaching style. If you aren't reaching every one of your students, they can become bored, disinterested and restless. As mentioned in the section on instruction, every student has their own learning style and an area where they excel.
D.O stands for Doctor of Osteopathic medicine. Dr. Still developed osteopathic medicine in 1874. He believed that every illness has a cause and every cause has a location. You find the location to make one healthy.
After all, they have the letters MD (for doctor of medicine) after their last names, right? But what if you see the letters DO? You might be surprised to learn that DO is an abbreviation for another type of physician: a doctor of osteopathic medicine, or osteopathic physician.