Practicality of a batak toba culture-based realistic model in the higher-order thinking skills of pre-service elementary school teachers. JPFKIP [Internet]. 2025 Oct. 25 [cited 2025 Oct. 29];14(5):780-96. Available from: https://primary.ejournal.unri.ac.id/index.php/JPFKIP/article/view/133