microteaching
/ˈmʌɪkrə(ʊ)ˌtiːtʃɪŋ/Education (originally and chiefly US )
noun
A method of teacher training, designed to develop specific skills, which involves the teaching of a small class for a short time followed by analysis of (usually a film recording of) the session.
Origin
1960s. From micro- + teaching.