This research was conducted to describe the application of active learning based on Better Teaching and Learning (BTL) in improving process skill and students study result of grade VIII SMP N 21 Semarang. The methode is classroom Action Research. The research result reviewed that the increasethe process skill of students at cycle 1 and 2 are :80.95 and 94.29. While the studentsstudy result above passing grade at the cycles 1and 2 are: 74.0 and 77.0. This result research that applying active learning Based on Better Teaching and Learning could increase the process skill and study result of the students.