I think Teacher Laxamin is one of the best instructors I have ever had for the Callan Method.
I tell you why. The Callan Method is a system in which students are supposed to respond to two questions, but in reality, I can't always response smoothly, so the teacher usually assists the students by giving their answers. However, she encourages the students to let them answer there relatively (especially the easier English sentences) and waits for them. On the other hand, when it is difficult to answer, she quickly assists them without taking too much time.
From the above, I felt that although the progress of the number of words and sentences in the lessons may be a little slow, the lessons are very rewarding as they allow for solid practice.