The activity also helps to clarify the main organs of the body present in the presentation. 1. The instructor defines the essential parts of the human body in human anatomy. The teacher must be very cautious at this point and not use illustrations. It is essential to explain to students that the purpose of this first activity is to draw on previous knowledge on the topic. Therefore, the students' main goal, in this case, is to determine what they know and what they don't know about the parts of the body that are vital to this lesson. 2. Once prior knowledge has been reviewed, at the end of the lesson each student is required to have a list of words, which should include episodes of the main parts of each body system. 2nd activity (collaborative) Schematic organization of the main parts of the human body