Developing English Vocabulary Learning Ability Using Activity-Based Learning Combined with Mnemonic Techniques for Mathayom Suksa 3 Students at Srinagarindra the Princess Mother School, Nakhon Si Thammarat

Abstract

             The objectives of this research were: 1) to develop effective English vocabulary learning activities using activity-based learning combined with mnemonic techniques for Mathayom Suksa 3 students to meet the efficiency criterion of 80/80, 2) to compare students’ English vocabulary learning achievement before and after the implementation of Activity-Based Learning combined with Mnemonic techniques and 3) to investigate student satisfaction toward the learning activities. The sample group consisted of 31 grade 9^th students enrolled in the second semester of the 2025 academic year at Srinagarindra The Princess Mother School Nakhonsithammarat, selected via cluster sampling. The research employed a quasi-experimental one-group pretest-posttest design. The research instruments included: 1) 12 lesson plans, 2) a 30-item multiple-choice achievement test and 3) a satisfaction questionnaire. Data were analyzed using mean, standard deviation, and a dependent samples t-test.
             The research findings were as follows:
             1. The efficiency of the English vocabulary learning activities using Activity-Based Learning combined with Mnemonic techniques was 87.15/82.80, which exceeded the specified 80/80 criterion.
             2. The students’ English vocabulary learning achievement after the intervention was significantly higher than before the intervention at the .05 level.
             3. Student satisfaction toward the learning activities based on Activity-Based Learning combined with Mnemonic techniques was at the highest level, with a mean score of 4.72.