Abstract:
The objective of this research was to develop a concept formation activity package on the topic of plant for Grade 4 students in Nam Yuen District under the office of Ubon Ratchathani Elementary Educational Service Area Region 5 to meet the standard criterion of 80/80. The sample in this study included 27 students in one class who were studying in the second semester of the academic year 2012 at Bannasamakkhee School, Songseevichian School network group, Nam Yuen District, Office of Ubon Ratchathani Elementary Educational Service Area Region 5, obtained by using cluster random sampling. The tools consisted of 1. seven sets of concept formation activity package on the topic of plant for Grade 4 students, and 2. a four-choice multiple achievement test according to the 80/80 criterion, by using E1/E2 formula. The statistics used for analysis were percentage, mean and standard deviation.The result of the study indicated that the efficiency of the concept formation activity package on the topic of plant for Grade 4 students was 83.84/83.70 which met the standard criterion of 80/80.