Inka Rikawati Harahap. Application Model Problem Based Learning for Improved Performance Skills (Performance) and Performance Results Study Mathematics Student Statistics Material Class X-5 SMA N 1 Merbau. JoGEs [Internet]. 2023 May 20 [cited 2025 Aug. 21];1(3):220-5. Available from: https://journal.berpusi.co.id/index.php/JoGEs/article/view/570