Development of a Gamified Number Line App for Teaching Estimation and Number Sense in Grades 1 to 7. International Conference on Computers in Education, [S. l.], 2021. DOI: 10.58459/icce.2021.4305. Disponível em: https://library.apsce.net/index.php/ICCE/article/view/4305. Acesso em: 20 aug. 2025.