Abstract:
The purpose of this study was to develop Science process skills packages on Plant and Animal Life for Grade 2 students with the efficiency equal to the criterion 80/80. The sample used in this study consisted of 35 Grade 2 students in Namyuen School, Ubon Ratchatani Educational Service Area Office 5, selected by Cluster Random Sampling from schools in Songseewichien Network Group. The tools for the research were 12 units of Science skills packages on Plant and Animal Life for Grade 2 students, 60 items of learning achievement test with the reliability at 0.84. The statistics used in the study were mean, percentage and standard deviation. The researcher taught 24 hours using 12 Science process skills packages and tested after each package to find the effectiveness of the packages (E1). After finishing the course, 60 items of an achievement test was used to find the effectiveness of the Science process Skills packages (E2) The research found that the Science process skills packages on Plant and Animal Life for Grade 2 students had the efficiency equal to 84.16/84.24 which met the criterion 80/80.