Loor-Mera, María Roxana, and Monserrate Dalila del Rocío Alcívar-Cedeño. 2022. “Tools to Stimulate Mathematical Performance in Students from 6 to 9 Years of the Manabí Educational Unit”. International Journal of Physics & Mathematics 5 (1):47-56. https://doi.org/10.21744/ijpm.v5n1.1916.