Author

Romel Anghad Perote*
Capiz State University – Roxas City Main Campus, Roxas City, Capiz, Philippines

Abstract

Mastery of division is a critical benchmark in elementary mathematics, yet many learners continue to struggle with its abstract procedures and multi-step processes. This study evaluated the effectiveness of Lattice Method in improving the mathematical performance in division of Grade VI pupils of Dulangan Elementary School during the School Year 2025-2026. Specifically, it aimed to determine the pupil’s level of mathematical performance in division before and after the intervention, assess whether a significant difference existed between the performance before and after, and measure the intervention’s effect size. The study employed a quasi-experimental, single-group pretest-posttest design involving 34 Grade VI pupils. A 30-item researcher-made test focusing on division problems was administered before and after a six-week intervention of the lattice method. Data were analyzed using the mean, standard deviation, paired samples t-test at a 0.05 significance level, and Cohen’s d to determine the effect size. Results showed that the pupils’ level of mathematical performance in division before the intervention was “Proficient” and improved to “Highly Proficient” after the intervention. There was a significant difference in the performance before and after, favoring the performance after the intervention. Moreover, Cohen’s d indicated a very large effect size, suggesting that the lattice method had a substantial positive impact on the level of mathematical performance in division of the Grade VI pupils. These findings highlight the effectiveness of the Lattice Method as a viable alternative to traditional approaches in teaching division.

Keywords: Lattice method, division, mathematical performance, quasi-experimental, single group pretest-posttest.

*Corresponding author / Email: romel.perote@deped.gov.ph
DOI: http://doi.org/10.69651/PIJHSS05021259

Recommended citation:
Perote, R. A. (2026). Teaching division using lattice method: Effects on the mathematical performance of Grade VI pupils. Pantao (International Journal of the Humanities and Social Sciences) 5 (2), 6048-6061. http://doi.org/10.69651/PIJHSS05021259

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