Teaching two-digit multiplication with the colour group–lattice approach
Keywords:
Colour Group, Lattice Method, Multiplication, Learning OutcomesAbstract
This study aims to enhance students’ understanding of two-digit multiplication through the application of the Colour Group learning model combined with the Lattice method. A quasi-experimental design Matching Pretest–Post-Test Control Group was employed, involving 68 fourth-grade students from SD Negeri Gunungsari 01. Data were collected using a validated cognitive test and analyzed through normality testing, homogeneity testing, t-test, and N-Gain calculations. The findings reveal that students in the experimental group exhibited significantly higher improvement compared to the control group. The N-Gain results showed a moderate-to-high category for the experimental group, while the control group fell into the low category. These results demonstrate that integrating the Colour Group model with the Lattice method can effectively improve students’ mastery of two-digit multiplication.
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