Braz Santana JE, Santana da Silva A. INVESTIGATING ALGEBRA CONCEPTIONS AND LEVELS OF DEVELOPMENT OF ALGEBRAIC THINKING OF TEACHERS FROM THE EARLY YEARS OF ELEMENTARY SCHOOL. RPEM [Internet]. 2021 Sep. 30 [cited 2026 Oct. 12];10(22):81-105. Available from: https://periodicos-hml.unespar.edu.br/rpem/article/view/6311