Damayanti R, Nasution IS. Pengaruh Media Geoboard terhadap Kemampuan Menghitung Keliling Bangun Datar di Sanggar Belajar Kampung Bharu Malaysia. SJRI [Internet]. 2026 Jan. 30 [cited 2026 Nov. 9];5(1):255-63. Available from: https://ejournal.nusantaraglobal.ac.id/index.php/sentri/article/view/5398