LEUANG, V. and Kanorth, P. 2025. A Study on Mathematics Learning Achievement in Systems of Linear Equations with Two Variables Using the Brainstorming Technique for Third-Year Secondary School Students at the Demonstration Secondary School of Savannakhet Teacher Training College. Souphanouvong University Journal Multidisciplinary Research and Development . 11, 03 (Jul. 2025), 40–45. DOI:https://doi.org/10.69692/SUJMRD110340.