On “Metodologi Penelitian”
learning activities, students less maximizing critical thinking skills. When discussion
class procces, not all students are able to express their ideas for solving
problems given by the lecturer. The research is expected to apply problem base
learning model can improve critical thinking skills and communication skills of
students. The research approach used is a qualitative approach. This type of
research is Classroom Action Research. The results of this research showed that
PBL syntax materialize in the first cycle of 82.14% with good criteria and the
second cycle percentage of 87.14% with very good criteria. This shows an
increase in the percentage of first cycle to the second cycle of 5%. Based on
critical thinking skills, critical thinking in the first cycle the percentage
of students at 78.65% with good criteria and the second cycle is 81.77% with
good criteria. This suggests that an increase in the percentage of critical
thinking skills from the first cycle to the second cycle of 3.12%. Based on
communication skills, in first cycle the percentage of students at 63.07 with good
enough criteria and the second cycles the percentage of 61.03% with a good
enough criteria. This suggests that a decline in communication skills of
students from the first cycle to the second cycle of 2.04%. The application of
the model Problem Based Learning (PBL) has not been able to improve the
communication skills of students. It is beyond the PBL syntax factor to improve
the communication skills that because some students arrive late when the vote
is held in small group discussions so little discussion of their value is very
low
Keyword
critical thinking, communication skill, problem base learning