Bella is very patient. She would observe kid's participation to fine-tune teaching content and methods. I think previewing can make class more efficient especially for the ESL learner. In this very beginner's class, Bella introduced Uke's component names and their characteristics, string numbers and sound names, also practiced three basic fingerings plus a flea dog song. There are a lot of things going on in 25 minutes. I'm not sure how much my kid has absorbed yet, but she maintains her interest and is willing to continue playing Uke.