The PBL learning process requires all students to be actively participate in the classroom. However, this may be
difficult for a class with a large number of students of more than 100. During the PBL process, students are required
to work in small groups (3 to 5 students in each group) so that they can exchange knowledge and mutually help each
other. They cannot only depending on text books alone, but will also gather information from other sources such as
websites, journals, newspaper and interviews. The students will then solve the problem based on the information
and knowledge that were obtained from their findings.