Gatto, Marcia Cristina, Fabrício Soares, and Helenara Machado de Souza. “THE GOLDEN MATERIAL AND THE TEACHING OF ADDITION AND SUBTRACTION: A REFLECTION FROM TEXTBOOKS ”. Seven Editora (December 3, 2024): 167–184. Accessed August 21, 2025. https://sevenpubl.com.br/editora/article/view/6149.