The aim of this literature review is to analyse the effectiveness of project-based learning on students' science process skills (SPS). Project-based learning as the learning method, which is recommended by the Indonesian curriculum, supposed to improve students' skills. Indonesian curriculum emphasizes the achievement of students' competencies, namely spiritual, social, knowledge and skills. SPS are the part of skills competency that will improve in science learning process. The method used in

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... his study is a literature review. First, the researcher provides the definition of project-based learning. Next step is to find information about how to conduct project-based learning and the important things to do in project-based learning. Then, the researcher synthesizes some information about work had been done to improve SPS in the previous study and make a connection with project-based learning. Based on the literature review, students' SPS will improve through clear instructions which involve students to design the science learning activities. The finding indicated that project-based learning activities effective to improve students' SPS.