Enhancing Spelling Abilities in Learning Unit 15 for Grade 2 Students on Non-standard Thai Spelling Patterns

Abstract

The objectives of this research were twofold: firstly, to compare Grade 2 students' ability to write and spell non-standard words in Thai subjects; secondly, to assess the effectiveness of spelling skills exercises in improving students' ability to write and spell words that do not conform to the Thai language spelling standards, with a threshold set at 70%. The research involved analyzing data from two learning management plans, where Learning Plan 1 (Mae Kon) exhibited a mean suitability score of 4.35 with a standard deviation (S.D.) of 0.27, and Learning Plan 2 (Mae Kod) had a mean suitability score of 4.49 with an S.D. of 0.34. Additionally, Mae Kan's spelling exercises were evaluated, with Set 1 showing a mean suitability of 4.81 and an S.D. of 0.32, Set 2 with a mean suitability of 4.74 and an S.D. of 0.45, and Set 3 with a mean suitability of 4.74 and an S.D. of 0.45. Furthermore, a spelling ability test was conducted, where Set 1 for Mae Kan yielded a test value range (p) of 0.56–0.78, a test value range (r) of 0.33–0.89, and a reliability value of 0.72; for Set 2, Mae Press obtained a test value range (p) of 0.61–0.78, a test value range (r) of 0.33–0.67, and a reliability value of 0.71. The statistical analysis encompassed percentages, means, and standard deviations of the sample, alongside statistical tests such as t-tests for comparing population means, t-tests for dependent samples, and t-tests for one-sample analysis.

The results indicated significant  improvements in both Series 1 and Series 2 after using the spelling exercises, with Mae Press showing statistically higher performance compared to before, at a significance level of .05. Additionally, the comparison of students' ability to write and spell words that do not adhere to the spelling scale of Thai language subjects post-spelling exercises revealed significant improvements above the 70% threshold for both Set 1 on Mae Kon and Set 2 on Mae Press, at the .05 significance level.