. This research aims to improve the student learning output in science subject by utilizing cooperativemodel of student teams achievement division (STAD) type at the fifth class B of elementary school 1 Sidokerto district Bumiratu Nuban. This study was a classroom action research. The results showed that the type cooperative learning model student teams achievement division (STAD) can improve students' learning activities, judging from the average percentage of student learning activities in the first cycle of 77% and 85.5% the second cycle. The implementation of cooperative learning model type of student teams' achievement division (STAD) may also increase the thoroughness of learning outcomes IPA. The percentage of students who complete the first cycle is 62.5% and the second cycle is 90.63% and an increase in the average score of N-Gain.