The document compares lecturer-centered and student-centered approaches to teaching. Lecturer-centered focuses on knowledge transmission from professor to passive students through memorization. Student-centered emphasizes active student involvement in constructing knowledge through real-life problem solving. While lecturer talks more in lecturer-centered, student talk is equal or greater in student-centered. The conclusion is that the most important thing is achieving learning objectives, and lecturers should control activities while students focus on learning, applying approaches appropriately.