Urni Babys, Netty J. Marlin Gella, Mario Dos Santos Amaral. Analysis of The Ability to Understand Mathematical Concepts of High School Students in Class X on Vector Material. IJHESS [Internet]. 2023 Aug. 9 [cited 2026 May 1];3(1). Available from: https://mail.ijhess.com/index.php/ijhess/article/view/610