Abstract:
The purposes of this research were 1) to develop series of the 7-e learning activity packages on substance and their properties for the first year students to meet the efficiency criteria (E1 / E2) of 70/70 and the effectiveness index (E.I.) of 0.50 2) to compare the learning achievement of students before and after learning by the packages 3) to study scientific attitude of students taught by the series of learning activity packages. The samples used in this study were 29 first year students of academic year 2015 at the College of Agriculture and Technology Ranong, Ranong Provinee. Tools for this study were 1) a set of learning activity packages by the 7-e learning cycle on substances and their properties for diploma first year class 2) achievement tests with the item discrimination range from 0.24 to 0.48, item the difficulty range 0.26 to 0.72 and the reliability of the test set was 0.91 3) questionnaires of scientific attitude of students after the experiment by of cronbachs alpha coefficient at 0.87. Statistical use were percentage, mean, standard deviation and t-test.
The results showed that 1) The efficiency of the activity packages (E1 / E2) were 78.51 / 87.36 and the effectiveness index was 0.69 2) the achievement of students by the average posttest score of students was higher than the pretest score at the statistical significant level of 0.05, and 3) average students scientific attitude was at the high level.