Sarah Maulida S, Banuharli S, Saparwadi S, Nursali N, Sanuardi S, Kartika Murni R, Nuraini N. Optimizing Problem-Solving Skills in First Grade: A Project-Based Learning Model Enhanced by Lesson Study at Sekolah Dasar Unggulan Hamzanwadi . Interdisciplinary Journal of Education [Internet]. 2024 Mar. 30 [cited 2025 Nov. 7];2(1):70-9. Available from: https://skillerindonesia.id/index.php/ije/article/view/79