As I wrote to the First S version, Method'S mathematics, as the entire Method'X collection, helps to assimilate the course through methods. If definitions, theorems and other properties are not always easy to grasp and apply in a year (these are abstract concepts after all), the course addressed through methods and issues can quickly assimilate the concepts and to know apply them easily. Nevertheless, the number of corrected exercises is low and, for a more intensive training (for one person who took math spe for example), whether to buy a parallel training book with more corrected exercises.