Dictogloss is a classroom dictation activity where learners are required to reconstruct a short text by listening and noting down key words, which are then used as a base for reconstruction.
Diglossia is a situation where a language that has two forms, one a ‘higher' and more prestigious form used by educated speakers in formal situations, and the other a ‘lower', vernacular form used more commonly.
The direct method of teaching was developed as a response to the Grammar-Translation method. It sought to immerse the learner in the same way as when a first language is learnt.