Pengaruh Metode Mnemonic Akrostik terhadap Peningkatan Memori tentang Materi Operasi Bilangan Bulat Siswa Kelas VIII SMP Negeri 4 Pantai Labu

Abstract

This study aims to determine the effect of the mnemonic acrostic method on improving memory in integer operations among eighth-grade students at SMP Negeri 4 Pantai Labu. This study employed a quasi-experimental design with a nonequivalent control group. The subjects consisted of 28 students, divided into an experimental group and a control group. Data were collected using an achievement test of 15 items, administered during the pre-test and post-test, and analyzed using gain scores. Data analysis was conducted with an Independent Samples T-Test using JASP software. The results showed that the gain scores of the experimental group were significantly higher than those of the control group (t = 3.512, df = 26, p = 0.002), with a mean difference of 3.429 and a Cohen’s d of 1.328, indicating a large effect. These findings suggest that the mnemonic acrostic method has a strong and significant effect on improving students’ memory. Therefore, the application of the mnemonic acrostic method is effective in enhancing memory performance in integer operations