Bunawan W, Mihardi S, Sitompul P, Ramadhani I. Improving Graphical and Numerical Representational Competence Coherence with Laboratory Investigation and Computer to Solve Problem-Solving of Geometry Optical Materials . jppipa, pendidikan ipa, fisika, biologi, kimia [Internet]. 2023 Jul. 25 [cited 2024 Jul. 3];9(7):5055-61. Available from: https://jppipa.unram.ac.id/index.php/jppipa/article/view/4153