1) Method 2) Pedagogy 3) Teaching method 1) Pedagogy 
study of teaching
• (n.) The science or art of teaching; the principles and rules of teaching; pedagogy.
Ped`a·gog'ics noun The science or art of teaching; the principles and rules of teaching; pedagogy. 
pedagogic, pedagogics, pedagogical, paedagogic 1. Of, pertaining to, or characteristic of a pedagogue or pedagogy; having the office or character of a pedagogue.2. The science, art, or principles of pedagogy. It is a pity that so many children and young people go to school without getting an education.—Anonymous