Procedural problem-solving approaches employed by students in learning extensive and intensive quantities of change of state: Procedural problem-solving approaches employed by students in learning procedural problem-solving approaches employed by students in learning extensive and intensive quantities of change of state. GJE [Internet]. 2018 Dec. 1 [cited 2026 Aug. 21];4:19-43. Available from: https://journal.ucc.edu.gh/index.php/gje/article/view/492