Kumon is a self-learning method. Instructors do not "teach" in the traditional sense; they guide. For highly abstract concepts like imaginary numbers or double-angle formulas, many students feel that self-learning is insufficient. The solution book acts as a surrogate teacher.
But here lies the truth: They are strictly internal answer keys for Kumon center instructors. So, why is this keyword searched thousands of times per month? Because students and parents are desperate for a lifeline. kumon math level o solution book