Kurniawan, Heru, and Prasetyo Budi Darmono. “The Use of Open-Ended Student Worksheet to Improve Mathematics Communication Skills in Algebra”. International Journal for Innovation Education and Research 9, no. 5 (May 1, 2021): 402–416. Accessed November 22, 2024. https://scholarsjournal.net/index.php/ijier/article/view/3106.