ALQAHTANI, M. M.; POWELL, A. B. Teachers’ Instrumentation of a Collaborative Dynamic Geometry Environment. Horizontes, [S. l.], v. 36, n. 1, p. 172–183, 2018. DOI: 10.24933/horizontes.v36i1.649. Disponível em: https://revistahorizontes.usf.edu.br/horizontes/article/view/649. Acesso em: 29 mar. 2024.