Abstract:
This quasi-experimental research aimed to study and compare the communication abilities of preschool children before and after implementing STEAM-based learning experiences, as well as to examine the effectiveness index of the STEAM-based learning approach. The target group consisted of preschool children aged 45 years from Anuban Wataranyikawas School during the first semester of the 2024 academic year. The experimental period lasted six weeks. The instruments used in the study included (1) a STEAM-based learning experience plan and (2) a communication ability assessment form for preschool children. Statistical methods used for data analysis included arithmetic mean, standard deviation, percentage, and effectiveness index. The research findings revealed the following: 1) The communication ability of preschool children was at a moderate level before the implementation of the learning experiences and improved to a good level after the implementation. 2) The communication ability of preschool children after the implementation was higher than before. 3) The effectiveness index of the STEAM-based learning approach was 0.9125, suggesting that preschool children's communication ability reached 0.9125 or 91.25%, indicating that STEAM-based learning experiences effectively enhanced their communication skills.