1.
Wahyuni R, Herman T, Fatimah S. Letters in Algebra as The Transition from Arithmetic Thinking to Algebraic Thinking. MOS [Internet]. 2023 Jul. 30 [cited 2024 Oct. 7];12(3):441-52. Available from: https://journal.institutpendidikan.ac.id/index.php/mosharafa/article/view/818