<![CDATA[Mastery of concepts is one of important things to measure achievement of the learning objectives. In mastering the concept of physics, process skills are required. The research used pre-experimental design with one group of pretest-posttest design which aimed to get an overview of improvement of mastery of concepts and science process skills on work and energy after the application of scientific approach in learning. The research instrument consisted of 19 items of concept mastery test shaped the essay, referring to revised Bloom's taxonomy with a reability of 0.64 and student worksheet to measure the students’ science process skills referring to the worksheet developed by Rezba. The instrument is applied to 32 nature students of grade 11 in one of the senior high schools in Bandung which is selected by purposive sampling. The measured concept mastery aspects are related to cognitive aspects based on Bloom's Taxonomy which consists of the aspects of understanding (C2), applying (C3), and analyzing (C4). The measured science process skills aspects consisted of identifying variables, predicting, constructing hypotheses, and experimenting. The results showed that there were an increase in concept mastery with a normalized gain value of 0.48 and science process skills from a fair to excellent level.]]>
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