Abstract
This action research was conducted to determine the effectiveness of the project (S.W.I.M.) Simple Writing Intervention Materials for improving the handwriting skills of the kindergarten students of Talacdan Elementary School (TES) for the school year 2022-2023. Handwriting skills performance was measured using a researcher-made assessment tool through a pretest and post-test method. Project S.W.I.M. was utilized to increase the handwriting performance, then a paired T-test was used to determine the significant difference between the pretest and post-test scores. The participants' handwriting skills during the pretest are at the beginning level in terms of pencil grasp, shape formation control, letter formation with basic strokes, letter formation with curves/slanted, and overall handwriting skills. Following the intervention of project S.W.I.M., handwriting skills in terms of pencil grasp were at a consistent level. In contrast, shape formation control, letter formation with basic strokes, letter formation with curves/slanted, and overall handwriting skills were at a developing level. There was a highly significant difference between the pretest and post-test scores in participants' handwriting skills. The improvement in their handwriting skills was evident in the results of their post-test after the implementation of the project SWIM. After the intervention, the pencil grasp is at a consistent level, which is also crucial for all handwriting skills. Moreover, constant practice and increasing time spent with parents' support are encouraged to support the intervention. The project S.W.I.M. effectively improved the participants' performance in terms of their handwriting skills. Hence, it is an effective tool in helping learners develop and improve their handwriting skills, as evidenced by the increase in handwriting skills.