Rahmat Jumri, Wahyu Widada, Dewi Herawaty
Abstract: This study aims to determine the application of cooperative learning to improve the effectiveness of innovative mathematics learning of undergraduate students of mathematics education at Bengkulu University. The research method used in this research is using Lesson Study. Lesson Study activity is done in learning with 3 steps of research in learning that is, preparation (plan), implementation (do) and reflection (see). This activity is conducted by researchers as a model lecturer and peer 2 people as observers. With the results of research that is the increased activity and value of student learning outcomes. In the first cycle of students ', activity observation of 61 % and the average score of student learning outcomes was 69.79, the second cycle was 70 % observation of student activeness as well as the average score of student learning outcomes of 75.79, the third cycle observed students', activeness of 86 % as well as the average value of student learning outcome of 84.39. from the results of this study, it can be said that the application of cooperative learning can improve the effectiveness of learning.
Keywords: Cooperative Learning, effectiveness, activity