Science can be a tool for studying the human and the natural surroundings, both directly and indirectly. The learning process can directly develop the competence to be able to study nature scientifically. Science education is hoped to be more inquiry that helps students gain experience and understand the natural surroundings. This study aims to reveal whether the implementation of outdoor cooperative learning model can improve the learning motivation and science achievement of students of SMP 2 Banguntapan academic year 2015/2016. This study is also used to determine the appropriate action patterns in implementing outdoor cooperative learning model on science lesson. This research is a classroom action research, which puts emphasis on efforts to change the real conditions that exist now towards the expected conditions by four stages: (1) planning, (2) implementation, (3) observation, and (4) reflection. Data were collected through four techniques, namely: test, questionnaires, interviews and classroom observation. The result of the research revealed that the achievement improves from 62.5 on the pre-cycle into 71.56 in cycle 1 and increased to 90.31 in cycle 2. Based on t-test, the achievement between pre cycle to cycle 1 got significance of 0.012, between cycle 1 to cycle 2 got significance of 0.000, between the pre cycle to cycle 2 got significance of 0.000. All show less than 0.05, a significant improvement. Motivation questionnaire result shows that no student has low motivation, 15.625% of the students have medium motivation and 84.375% of students have high motivation, so this study is considered successful in improving students' motivation. Based on data from the achievement in the first cycle to the second cycle that is very significant and the students' satisfaction on learning activities outside the classroom, it can be taken a precise time ratio for the lesson period: preliminary learning : learning outside the classroom in groups (7-8 children at a different place for each group) : a group discussion in the class : closing = 1: 4: 2: 1. A bibliography is included.