THOMPSON, F. F. Math Essentials, Elementary School Level: Lessons and Activities for Test Preparation, Grades 3-5. Education Review, [S. l.], 2015. DOI: 10.14507/er.v0.931. Disponível em: https://edrev.asu.edu/index.php/ER/article/view/931. Acesso em: 3 may. 2024.