E. E. de A. Cruz, J. D. P. Santos, and R. P. da Silva, “THE USE OF CONCRETE MATERIALS FOR TEACHING THE DECIMAL NUMBERING SYSTEM AND THE FOUR BASIC OPERATIONS”, REASE, vol. 8, no. 7, pp. 554–562, Jul. 2022, doi: 10.51891/rease.v8i7.6178.