Penerapan Pembelajaran Model Problem Based Learning (PBL) Untuk Meningkatkan …

This study aims to determine students' critical thinking skills improvement through the application of Problem Based Learning (PBL) in biology learning class XI SMA PGRI Pekanbaru. This research was conducted in class XI SMA PGRI Pekanbaru MIA 3 TA second semester 2015/2016. From April to May 2016. The subjects in this study were students of class XI MIA 3 academic year 2015/2016 with 23 s…