Bernard, Martin, Eva Dwi Minarti, and Masta Hutajulu. “Constructing Student’s Mathematical Understanding Skills and Self Confidence: Math Game With Visual Basic Application for Microsoft Excel in Learning Phytagoras at Junior High School”. International Journal of Engineering and Technology 7, no. 3.2 (June 20, 2018): 732–736. Accessed August 17, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/18738.