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Amila, Agnes and abdurrahman, abdurrahman and Suyatna, Agus and distrik, I wayan and Herlina, Kartini (2018) Practicality and Effectiveness of Student’ Worksheets Based On Ethno science to Improve Conceptual Understanding in Rigid Body. International Journal of Advanced Engineering, Management and Science (IJAEMS), 4 (5). pp. 400-407. ISSN 2454-1311