Richard Riehle wrote:
I do not disagree with you CK. My contribution was, or at least was intended to be, a bit more focused.
The original question was about teaching introductory students. That is quite different from teaching students who already understand the basics and are ready to move on to other techniques. Also, my focus, in my post, was on the adult student, not children's Judo. My experience with children's Judo is much too limited to be useful for anyone. For the adult student, including the beginner, I am a firm believer in teaching principles. The instructor who is an expert in a given set of techniques, is likely to be able to use that expertise to teach those principles.
You are correct, CK, that the instructor should also be prepared to teach other techniques, in fact, all of the Gokyo and beyond. However, I believe the beginning student will benefit most from learning those techniques the instructor understands best, especially when taught in the perspective of principles.
Coaching is quite different than teaching. A coach will take a comprehensive approach to the Judoka's fitness at all levels; physical, mental, attitude, and overall preparation. Many good coaches are not especially good teachers, and vice versa. Skill sets vary in many ways in Judo. For example, some excellent teachers are not good referees, some referees are not good coaches, and so on. One interesting thing about a good coach is the ability to assess talent for shiai. Not every instructor, even some very good ones, are able to do that as well as a great coach. Often, a great coach is someone who cannot do Judo as well as when s/he was younger. I can think of several great coaches who are in that category.
As the student makes progress from experience with a well-taught set of waza, and as s/he becomes more confident in the application of those waza, along with an understanding of the principles, it is helpful to learn from more different kinds of instructors, train with a larger variety of specialists, etc.
As I noted in my earlier post, I can no longer do a proper tomoe-nage. There are a few other techniques that are difficult for me at my present stage of antiquity such as kata-guruma. However, my ashi-waza along with some other techniques are still pretty good. I cannot teach tomoe-nage as well as I could when I was younger since I can no longer demonstrate it properly. Even so, I can spot a good tomoe-nage quite easily, and recommend corrective action for the student.
We use the talent we have to get the best outcome for our students. We also need to understand our limitations. My PhD is in a technological field, and I have an understanding of many technological topics. However, some of my colleagues specialize in some of those topics and can teach them better than I even though when I have a pretty good grasp of them. My practice for my academic students is to learn from those specialists if they want to get the best instruction. I think the same often applies to Judo.
Please, note that I responded to the post of "StillLearning" and not to yours, even though "StillLearning" relayed or built his comment on yours.