Ferrugine, S. S., D. H. R. . Evangelista, and C. J. Evangelista. “Contributions of the Golden Material to the Teaching of Decimal Numbers in a Class of 6th Grade of Elementary School II”. The Journal of Engineering and Exact Sciences, vol. 7, no. 1, Mar. 2021, pp. 12155-01, doi:10.18540/jcecvl7iss1pp12155-01-10e.