My 6th grade clarinet students often get frustrated when looking up fingerings they don't know (we try hard to not tell them the answer, but rather have them look it up themselves). The charts in the back of the methods books are great, but to a young student it can be confusing which pinky or side key is actually supposed to be used. This interactive fingering chart, while obviously not in their book, could alleviate these same frustrations in their practice sessions at home.
An article that discusses finer points in the "Art" of teaching; when students don't grasp a concept. Is it always the teachers fault? Can the student be doing anything differently to help on their end? This article has possible solutions!
It's easy to teach and celebrate the classic composers: Bach, Beethoven, Mozart, etc., but this article discusses ways to incorporate the composers that are still alive today that are still creating new media in our art form.
An interesting article about the pros and cons to using music technology to teach composition, including interesting angle the article covers that I hadn't considered is the importance of manuscript hand-writing.