A Review and Summary of this chapter. Preparation for group presentation on a given topic IV.Teaching methods and aids Lectures with PPT in a multimedia classroom,Q&A,presentation,case study, and group discussions. 5 A Review and Summary of this chapter; Preparation for group presentation on a given topic. Ⅳ. Teaching methods and aids: Lectures with PPT in a multimedia classroom, Q & A, presentation, case study, and group discussions