“Impact of Project-Based Learning Approach for Social Studies on the Academic Scores of 6th-Grade Students in One of the Middle Secondary Schools under Trashigang Dzongkhag”. Bhutan Journal of Research and Development 13, no. 1 (June 9, 2024). Accessed June 11, 2026. https://bjrd.com.bt/index.php/bjrd/article/view/246.