Siregar T, Semuel Franklyn Yawan, Samosir RC. E-MODULE OF CONTEXTUAL BASED CHEMISTRY IN INCREASING LEARNING ACTIVITY ON HYDROCARBON COMPOUND MATERIAL. J. IPI [Internet]. 2025 Feb. 28 [cited 2025 Apr. 10];13(1):45-54. Available from: https://ejournal.uncen.ac.id/index.php/JIPI/article/view/4571