The Development of Learning Achievement through Davies’ Practical Model on Plant Propagation by Air Layering for Grade 5 Students at Ban Nong Bua Daeng Witthaya School

Abstract

This study aimed to: 1) examine the effectiveness of a learning management plan based on Davies’ Practical Model on plant propagation by air layering for Grade 5 students according to the 80/80 criterion; 2) study the effectiveness index of the learning management using Davies’ Practical Model on plant propagation by air layering; 3) compare the students’ learning achievement before and after participating in the instruction using Davies’ Practical Model; and 4) investigate the students’ satisfaction with the instruction using Davies’ Practical Model on plant propagation by air layering through the E-PLC process. The target group consisted of six Grade 5 students at Ban Nong Bua Daeng Witthaya School. The research instruments included: 1) the instructional plan and 2) a learning achievement test. The data were analyzed using frequency, percentage, mean, standard deviation, and the Wilcoxon Signed-Rank Test. The results of the study were as follows: 1. The effectiveness of the instructional plan based on Davies’ Practical Model with the E-PLC process was 81.67% for process performance (E1) and 88.89% for learning outcome performance (E2), which exceeded the set standard of 80/80. 2. The effectiveness index (E.I.) of the instructional approach was 0.65, indicating a 65% learning progress, which was higher than the standard criterion of 0.50. 3. Students’ learning achievement scores before instruction had a mean of 13.17, while the post-instruction mean was 26.67. The post-test scores were significantly higher than the pre-test scores at the .05 level.