<![CDATA[Enhancing students’ activity and science concept mastery using guided-inquiry based practical manual. This quasi-experimental research aimed to understand the effectiveness of guided-inquiry based practical manual for improving students’ activity and concept mastery of science. Sixty students from SMP Negeri 1 Natar were selected as research samples in this study. This research used two types of data that is quantitative data (pretest, postes, and n-gain) and qualitative data (learning observation and student activity). The results showed that high n-gain score (0.70) for both experimental class 1 and 2. In addition, the assessment of student activity in experimental classes 1 and 2 is also quite good with the score is 86.44% and 85.84%, respectively. Therefore, the use of guided inquiry based practical manuals is highly recommended to improve students’ learning activities and mastery of the science concept. Keywords: Practical manual, guided inquiry, students’ activity, science concept master DOI: http://dx.doi.org/10.23960/jpp.v8.i1.201801]]>
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