THE DIFFERENTIATION OF STUDENTS LEARNING ACHIEVEMENT AND CRITICAL THINKING BETWEEN THE USING OF LEARNING VIDEO AND GRAPHIC AS MEDIA IN PROBLEM BASED LEARNING (PBL) MODEL IN SMA NEGERI 3 MEDAN

The purpose of this study is to differentiate students learning achievement and critical thinking and to investigate the relations between students’ learning achievement and critical thinking between the using of learning video and graphic
as media in Problem Based Learning (PBL) model in SMA Negeri 3 Medan. The study involves two classes as research samples. Both of the classes studied in PBL, however XI-6 class used learning video as media, meanwhile XI-5 class used graphic as media. Blooms cognitive test instrument was given to the students
to measure students learning achievement, whereas the critical thinking assisted by using Cornell critical thinking test instrument. The study found that there is a significant difference of students learning achievement between the using of learning video and graphic in PBL model with level of significance 0,01 (tobs =10,03 > ttable = 2.3727). The mean of cognitive post test score in PBL with learning video is higher 10,0 points then the graphic does. The study also confirmed that there is a significant difference of students’ critical thinking between the using of learning video and graphic in PBL (tobs = 6,403 > ttable = 2.3727). PBL with learning video able to increase 27% of students’ critical thinking, meanwhile the graphic only 24%. The study investigation indicates that
there is a relation between student learning achievement and critical thinking in this case. The higher students Cornell critical thinking test score for their critical
thinking level positively contributes to the higher cognitive test scores for student learning achievement. 60% of visual students in this research samples to be estimated has a great role for students learning achievement and critical thinking
progress in this study.
Keyword: Problem Based Learning (PBL), Learning Video, Graphic, LearningAchievement, Critical Thinking