Teacher cognition

Definition of teacher cognition from the literature of education or language teaching (E.g.Borg,Richards)
Why teacher cognition is important (in brief)
Studies focus on language teacher cognition IN Task based language teaching ,critical analysis of recent studies , identify in each study what is aims, sample, methodology and findings)
(all above in 3000 words and explain more on studies in teacher cognition)
Teacher education :
What it means by professional development and training, is there differences in these 2 concepts ( from language teaching or education literature in brief )

Why language teacher education is important
Studies focus on language teacher professional development ( what are the aims , sample , methodology and findings )
(2000 words)
Issues / challenges in language teacher training( 1000 words)