MEASUREMENT OF REFRACTIVE INDEX OF WATER IN COASTAL AREA USING He-Ne LASER AND HOLLOW PRISM by Arlin Maya Sari, Ucia Mahya Dewi, Tulus Setiawan

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STUDENT ACTIVITIES AND PERCEPTIONS OF WEB-BASED VIRTUAL LABORATORY: INSIGHT FROM PHYSICS LEARNING by Tulus Setiawan, Rizki Suwanda, Said Fadlan Anshari, Ria Ananda, Fanita Fanita

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PROBLEM-BASED LEARNING (PBL) WITH QUIZIZZ: IMPROVING STUDENT LEARNING OUTCOMES IN OPTICAL INSTRUMENTS by Ikhwan Ananda Husna, Syafrizal Syafrizal, Halimatussakdiah Halimatussakdiah, Muliani Muliani, Tulus Setiawan

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