Nurul K, Suratno S, Sudarti S, Dafik D. The development of RBL-STEM learning materials for students’ metacognition improvement in producing herbal tea from the cascara . IJIRE [Internet]. 2022 Dec. 3 [cited 2024 Jun. 2];9(2):203-11. Available from: https://www.un-pub.eu/ojs/index.php/IJIRE/article/view/8581