Physical Therapy Courses that Make a Difference. Great Lakes Seminars takes pride in offering great manual therapy courses taught by experienced and passionate instructors. We use methods of instruction that give professionals the best opportunity to increase their knowledge and immediately apply the techniques they learn. We Care Our instructors are not only passionate about the courses they teach, but they are also passionate about working to improve the field of physical therapy. With each GLS course you take, you will learn techniques that will help you to become a better therapist and immediately help your patients. We’re Consistent In each of our courses, we present the material multiple times and in different ways. This allows students with diverse learning abilities to understand the techniques so that each student walks away from the course with a firm grasp on the concepts presented. We’re Committed We value your opinion. Great Lakes Seminars offers multiple ways for you to share your thoughts, comments and ideas. Whether it’s through a post-course evaluation, direct email, or a phone call, we are committed to making your experience a great one.