First of all, Forbes' mathematics teaching content is relatively simple and easy for students to understand, while Kangda's course may be a little difficult for junior two students. Secondly, Forbes' courses are seamlessly connected with students' on-campus courses. In contrast, the degree of convergence of Kangda University is slightly inferior.
In short, both training institutions have good teachers and perfect learning systems. When choosing, it is recommended to consider the actual situation and needs of children.