This study aims to determine students' perceptions of the application of scientific approach to biology learning of class X SMA Negeri 12 Pekanbaru. This research was conducted at SMA Negeri 12 Pekanbaru in May - June 2017. The population in this research is all students of class X SMA Negeri 12 Pekanbaru Academic Year 2016/2017 consisting of class X MIA 1, X MIA 2, X MIA 3, X MIA 4 and X …