The importance of vocabulary, its types, selection criteria, size and depth, and teaching principles were found unclear. The present article seeks to respond to such challenge. To achieve the mentioned goals, we did a systematic review to previously related studies and theories. The results showed that the vocabulary was found to be more…

Learning theory suggests that student learning can be improved if students are required to articulate and reflect about work that they have done. This process helps students think more clearly about their work and such articulation also enables tutors to better assess student knowledge and mental models. There are various electronic tools…