Abstract:
The purposes of this research were to develop the instructional packages on the environment conservation for Prathom Suksa 5 pupils and find out the efficiency of the packages based on the standard criteria of80/80, and to compare the pupils learning achievement after using the packages.
The samples of this study were 30 pupils in Ban Non Primary School, Detudom District, Ubon Ratchathani Province, in the academic year 2005. The purposive sampling technique was used for the sample selection. The experiments covered twelve hours. The One Group Pretest Posttest Design was employed for the experiment. The instruments were the packages and the achievement test made by the research. The test difficulty indices ranged from .20 to .80, the discrimination indices ranged from .20 to .77, and the reliability value was .88. The statistics employed for data analysis were percentage, and Wilcoxon Signed Ranks Test.
The research findings indicated that :
1.The packages were efficient since they were found to meet the criteria of 81.88/81.66.
2.It was found that the pupils learning achievement after using the packages was statistically higher than that before using the packages at .01 level of significance.