The Development of Digital Learning Materials to Enhance Thai Word Reading Skills Involving Transforming and Reducing Vowels for Prathomsuksa 1 Students at The Demonstration School of Chiang Rai Rajabhat University

Abstract

The objectives of this study were: 1) to construct and examine the efficiency of digital learning media to enhance the students’ word reading skills based on the 80/80 criterion; and 2) to compare students’ pre-test and post-test word reading skills achievement after using the digital learning media. The study employed a one group pretest-posttest design. The sample consisted of 30 Prathomsuksa 1/3 students at The Demonstration School of Chiang Rai Rajabhat University in the first semester of the 2026 academic year, selected using cluster random sampling. The research instruments included digital learning media on transforming and reducing vowels, comprising 6 topics; 8 lesson plans covering 16 hours of instruction; and a 50-point word reading skills achievement test on transforming and reducing vowels for Prathomsuksa 1 students. Data were analyzed using percentage, mean (x̄), standard deviation (S.D.) and a paired samples t-test.

The research findings showed that:

1) the digital learning media to enhance the students’ word reading skills demonstrated an efficiency (E₁/E₂) at 86.95/86.86, meeting the 80/80 criterion;

2) students who learned through the digital learning media achieved an average pre-test score of 30.60 and an average post-test score of 43.43. A paired samples t-test analysis revealed that the students’ post-test word reading skills achievement was significantly higher than their pre-test scores at the .01 level.