1 The Development of Science Learning, Contextual Model Based on Project, Science Process Skill Muriani Nur Hayati 1) , Kasmadi ImamSupardi 2) , Siti Sundari Miswadi 3) Program Studi Pendidikan IPA Program Pascasarjana UNNES ABSTRACT Keywords : The Development of Science Learning, Contextual Model Based on Project, Science Process Skill Dealing with the policy of the minister of Education : The Total Ratio SMU : SMK = 30% : 70% in year 2014, to the future, the skill and the ability of SMK students are ready to build and to use so they are able to own the specialty. Consequently, the innovation in the science learning process that can develop science student skill is needed. This research is though development of science learning at vocational school using contextual model based on project to improve the learning result and science process skill students. After treated with this model, the teaching and learning advise used in teaching “ways in handling waste” topic using contextual model based on project valid with average 3,68, effective because is able to complete the indicator, there is an increase of Science Process Skill with an average score of 72,85 and 80,6% completeness classical or 29 among 36 students have completed. There is an increase students‟ cognitive learning outcomes, the average increased from 58,33 to 81,39 and 92 % classical completeness, or 33 among 36 students have completed. The average of affective and psychomotor learning outcomes students‟ achieve well defined indicators of success, we re ≥ 70. A total of 91,18% or 31 among 34 students responded well to the project based learning.