Developing spelling skills that do not meet the spelling standards Using the skill training form for 3rd-grade students at Ban Hua Na Nong Waeng School

Abstract

The objective of this research is to 1) develop a spelling training model that does not meet the spelling standard for students in grade 3 to be effective according to the criteria 80/80, and 2) compare writing skills that do not meet the spelling section between before and after school using the skill training form. The target group used in this research is 6 students in grade 3, semester 1, academic year 2025, Ban Hua Na Nong Waeng School, which was obtained by specific selection (Purposive Sampling). The tools used in the research consist of four learning management plans, four sets of skill training plans, and 30 multiple-choice writing skills. The statistics used to analyse data include mean, standard deviation, percentage, and effectiveness index (E.I.) The results of the research show that :

1. The spelling skill practice exercises for words with irregular final consonants for Grade 3 students achieved an efficiency () of 81.34/88.33, which met the established 80/80 criteria.
2. Students have spelling skills that do not meet the spelling standard. Before using the skill training form, the average score is 11.83, the standard deviation is 1.60, accounting for 39.44 percent, and after using the skill training form, the average score is 27.50, the standard deviation is 1.04, accounting for 88.33 percent, which is higher than before studying and with an effectiveness index of 0.7886, indicating an increase in development of 78.86.