Pedagogy.

Pedagogy is the discipline that studies education as a sociohistorical phenomenon and as a practice. The term derives from the Greek words paidos (child) and gogia (to guide). In ancient Greece, a pedagogue was a person—usually a literate and well-educated enslaved person—in charge of educating the household children. In time, the term acquired other nuances until it became a formal academic discipline concerned with the efficient transmission of knowledge, and the theories and practices it entailed.