Learning physics in SMAN 1 Bukittinggi was conducted through theories and practicum that verified the theories. The preliminary survey on the implementation of physics learning showed that teachers had not yet applied research-based learning. There were still many students who had not yet mastered the learning of physics. Supporting facilities such as physics laboratory and the equipment had been available, but they are not yet optimally utilized. Research-based learning model is one of learning models that can improve critical thinking skill and students' learning outcome. The research is aimed at developing research-based physics learning model with Science, Environment, Technology, and Society (SETS) approaches which was valid, practical, and effective to improve students' critical thinking. This research used a 4D model from Thiagarajan. The instruments of the research were interview guidance, observation sheets, validation sheet of the learning model and the instructional materials, questionnaire response of teachers and students, critical thinking skill test, and assessment sheet of skills and attitudes. The result of the research showed that the developed learning model and the instructional materials belonged to the category of valid which was in accordance with the expert judgment. The learning model and the instructional materials belonged to the category of practical based on the result of the observation, and the response of teachers and students. The implementation of Research-based Physics Learning with SETS approach was effective in improving critical thinking skills and learning outcomes of the students.

This study aims to produce a learning device in the form of a physics module based on SETS that is valid and practical to improve students' conceptual understanding. The type used in this research is Research and Development (R&D). Subjects of this study were teacher and students of class XI MIA 1 with a total of 31 subjects. The research procedure  is the 4-D model, namely define, design, develop, and disseminate. Due to time and cost limitations, this  research is limited to the develop stage. The research instrument used was a validity questionnaire, practicality, and a description of the conceptual understanding. Furthermore, data obtained were analyzed to see the validity and practicality of the module as well as an assessment of students' conceptual understanding of dynamic fluid material. The level of understanding of students' concepts is seen from the aspects of interpretation, exemplifying, explaining, and comparing. The results showed that the physics module based on the SETS developed was categorized as very valid with an average of 82.16 and in the very practical category with a percentage of 84.29. Then for understanding the concept of students obtained a score of 94.67 in the interpretation  aspect,  86.98 in the exemplary aspect, then 81.10 and 86.61 respectively for the aspects of explaining and comparing. Learning using a physics module based on SETS is very good to be applied in order to improve students' conceptual understanding of dynamic fluid material. This was proven by the increase in students' understanding of concepts in every physics learning meeting on dynamic fluid material.

Fundamental physics is one subjects for Physics Education's Department in STKIP PGRI West Sumatra. For supporting the course and geting a good result it require the lecturer's note like module. The developed a lecturer's note is a module based guided inquiry that is expected to make students more active, creative and critical thinking as well as skilled in the discovery of the facts in Physics. Guided inquiry is a learning model which there are some activities that are scientific, students submit ideas before the topic studied, then investigate a phenomenon or phenomena. After that, the student explained that based on existing facts and compare them scientifically. This type of research is research and development using a Plomp's model is passing through the stages: (1) the initial investigation (preliminary research), (2) design and realization (prototyping phase), and (3) testing and assessment (assessment phase). On the preliminary research, curriculum analysis will be doing, so students analysis, and analysis of the concept. On prototyping phase the module for the Physics at the fluid is designed. Next, we get the formative evaluation that includes self evaluation, prototyping (expert reviews, one-toone and small group). We get the validity at this stage. The research data was obtained through the validation module sheet, which then produces a valid module. Keywords: validity, modules, guided inquiry, fundamental physics, fluid AbstrakFisika Dasar merupakan salah satu mata kuliah Program Studi PendidikanFisika di STKIP PGRI Sumatera Barat. Untuk mendukung perkuliahan dan mendapatkan hasil belajar yang bagus maka dibutuhkan bahan ajar berupa modul. Bahan ajar yang dikembangkan merupakan modul yang berbasis guided inquiry yang diharapkan mampu membuat mahasiswa lebih aktif, kreatif, dan berfikir secara kritis serta terampil dalam penemuan fakta-fakta dalam Fisika Dasar. Guided inquiry adalah model pembelajaran yang didalamnya terdapat beberapa kegiatan yang bersifat ilmiah, mahasiswa menyampaikan ide-ide sebelum topik tersebut dipelajari, kemudian menyelidiki sebuah gejala atau fenomena. Setelah itu, mahasiswa menjelaskan berdasarkan fakta-fakta yang ada dan membandingkannya secara saintifik. Jenis penelitian yang digunakan adalah penelitian pengembangan (research and development) menggunakan model Plomp yaitu yang melewati tahapan: (1) investigasi awal (preliminary research), (2) perancangan dan realisasi (prototyping phase), dan (3) ujicoba dan penilaian (assessment phase). Pada tahap preliminary research dilakukan analisis kurikulum, analisis mahasiswa, dan analisis konsep. Pada tahap prototyping phase dilakukan perancangan modul untuk mata kuliah Fisika Dasar pada materi fluida. Setelah itu dilakukan langkah formative evaluation yang meliputi self evaluation, prototyping (expert reviews, one-to-one, dan small Naskah diterbitkan: 30 Juni 2016