Moyer, T. O. and Krach, R. M. (2022) “Formulas! Formulas! Everywhere! A few activities to introduce area”, Ohio Journal of School Mathematics, 92(1), p. 13–26. vailable at: http://voyager.janeway.systems:9999/index.php/OJSM/article/view/9071 (ccessed: 7 November 2026).