Sebastian, ...., 		Kuswanto, ...., 		Jumadi, ...., & 		Hapsari, ....
(2023).
Effectiveness of Flip—Book Optic Devices based on Problem-Based Learning Assisted with Virtual Laboratory Simulation to Improve High School Students’ Visual Representation.
<em>Revista Cubana De FíSica, 40</em>(2), 90-97.
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