THE IMPLEMENTATION OF PROBLEM BASED LEARNING WITH SCIENTIFIC APPROACH TO INCREASE THE STUDENTS’ MATHEMATICAL CREATIVE THINKING ABILITY IN SMPN 37 MEDAN

The problem of this research is the low of students’ mathematical creative
thinking ability. This research aims to increase the students’ mathematical
creative thinking ability by applying problem based learning model with scientific
approach. Problem is identified based on initial observation result that consisted
of preliminary test and interview with one of mathematics teacher in SMPN 37
Medan. Preliminary test is done to know creative thinking ability and references
to grouping students in problem based learning that will be done next. This
research is Class Action Research (CAR), which is implemented in SMPN 37
Medan. The subject in this research was the students of class VIII-2 academic
year 2015/2016 that have 42 students. The object of this research were the
students’ mathematical creative thinking ability and problem based learning
model with scientific approach. The indicator of success is there are minimum
70% of the total students that followed the test get minmum score 2.51. This
research consisted of 2 cycles and both cycle consisted of two meetings. Students’
mathematical creative thinking ability test conducted at the end of each cycle. The
result of this research could be seen: (1) The result of students’ mathematical
creative thinking ability test in cycle 1, completed 22 students and not completed
20 students, classical completeness is 52.4%. (2) The result of students’
mathematical creative thinking ability test in cycle 2, completed 31 students and
not completed 11 students, classical completeness is 73.8%. (3) Problem based
learning model with scientific approach can increase the students’ mathematical
creative thinking ability.