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Yana, S.; Yusrizal, Y.; HÐ°ÓÑ–m, Ð. .; Ð…ÑƒukrÑ–, . . . . M. .; Ð•ÓÑ–Ñ•Ð°, Ð•ÓÑ–Ñ•Ð°. Application of Problem Based Learning (PBL) Model to Improve Problem Solving Skill from Critical Thinking Skill Students on Dynamic Fluid Materials. jppipa, pendidikan ipa, fisika, biologi, kimia 2022, 8, 521-527.