Bernard M, Dwi Minarti E, Hutajulu M. 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. IJET [Internet]. 2018 Jun. 20 [cited 2024 May 2];7(3.2):732-6. Available from: https://www.sciencepubco.com/index.php/ijet/article/view/18738