classes:  lecturer. He approaches students, he teaches and clarifies the problems students are asking, makes students feel like learning from him.  curriculum. He approaches students, he teaches and clarifies the problems students are asking, makes students feel like learning from him.  facility. He approaches students, he teaches and clarifies the problems students are asking, makes students feel like learning from him.  general. He approaches students, he teaches and clarifies the problems students are asking, makes students feel like learning from him.