Sartono, Karso, Indra Suhendra, Muh. Erwinto Imran. The Effectiveness of The Open-Ended Approach to Student Learning Outcomes. Elementary Education Online [Internet]. 2021 Mar. 18 [cited 2025 Jan. 15];20(1):553-62. Available from: https://ilkogretim-online.org/index.php/pub/article/view/1788