Nurhayani N, Damanik M, Sinaga M. Innovation based learning contextual for thermochemistry topic in senior high school. J.Pendidik.Kim [Internet]. 2018 Dec. 30 [cited 2025 Sep. 1];10(3):409-13. Available from: https://jurnal.unimed.ac.id/2012/index.php/jpk/article/view/12718