Abstract

This study developed and evaluated interactive digital learning media that translate local flood evidence from Tha Than Subdistrict, Chachoengsao Province, Thailand, into flood risk education. A research and development design were used with two objectives: (1) to design and develop the media from local flood evidence and to evaluate their quality and efficiency (E₁/E₂), and (2) to compare flood knowledge before and after use of the media. Local evidence was drawn from field surveys at three monitoring points along Khlong Tha Lat, geospatial analysis, and historical flood records. The media comprised a flood watch map, a 7-minute 47-second animation, “Ru Thao Than Nam Thuam” (Flood-Wise), and a scenario-based water-level interpretation activity. Five experts evaluated the storyboard and the animation. Fifteen Grade 5-6 students took part in a pilot of the scenario-based activity, and a field trial of 35 participants (the same 15 students and 20 pre-service teacher trainees) completed a flood-knowledge pre-test and post-test and a media quality and satisfaction questionnaire. The villages were classified into three flood-risk levels—high (Villages 1, 2, and 5), moderate (Village 6), and low (Villages 3, 4, and 7) which corresponded to the floods recorded in 2018-2022. Experts rated the 12-scene storyboard and the animation at the highest level in every domain (Mean = 4.80-5.00), and all IOC values were 1.00. The scenario activity yielded a process efficiency of E₁ = 90.00 (N = 15), whereas the field-trial post-test yielded an outcome efficiency of E₂ = 90.00 (N = 35). Because the two values were obtained from different samples, they are reported as separate, sample-specific indicators, each of which exceeded the 80% criterion. Flood knowledge rose significantly from a pre-test mean of 10.53 to a post-test mean of 13.50 (out of 15), t(34) = 7.21, p < .01, Cohen’s d = 1.22. Participants rated the media’s quality and usability at the highest level overall (Mean = 4.58). The results support the content quality, usability, and short-term effect of the media on flood knowledge. Because a one-group pretest-posttest design was used and flood risk awareness and community preparedness were not measured with pre/post instruments, the findings should not be interpreted as evidence of improved community preparedness.

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