An Analysis on the Fundamental Concept of Levels and Sublevels in the History of Algebra: An Analysis on the Levels and Sublevels of Algebraic Reasoning in Education. JASRAE [Internet]. 2018 Apr. 1 [cited 2025 Aug. 21];15(1):674-89. Available from: https://ignited.in/index.php/jasrae/article/view/7689