Analysis of Laboratory skills and Chemical Preparation of Student of Packaging and Material Technology Program, Faculty of Agro-Industry

Abstract

This research is about the study of operating skills and preparation of chemical solutions of Packaging and Materials Technology students, Faculty of Agro-Industry at Prince of Songkla University, as well as the analysis of problem in teaching the practical laboratory skill and the preparation of chemical solution for students. The purpose of this research is a qualitative study by collecting the documents, which are the preparation of chemical solution in two laboratory subjects in amount of 232 documents on the duration period of 6 academic years. On the consideration of statistic data, the linear curve is represented as the percentage. On categorizing in the group of factors, it used Descriptive statistics with distributing data for finding the frequency and percentage. The result found that 1). For choosing the calculation of the chemical formulas for the preparation of the chemical solutions, it tended to decrease from 55.00% to 44.12%. 2) For explaining the method in the calculation of preparing the chemical solutions, it tended to decrease from 62.50% to 38.24%.   And 3) For explaining the method in the preparation of the chemical solutions and selecting the equipment uses, it tended to decrease from 57.50% to 50.00%. From the decreased trend of skill in practical laboratory and the preparation of chemical solutions, the analysis of problem is used by fishbone diagram. The factors can be classified into
1) The Persons related the preparation of chemical solutions. 2) The method of teaching in preparing the chemical solutions. 3) The evaluation on skill in preparing the chemical solutions. 4) The type of concentration of chemical solutions which prepared. 5) The type and status of starting chemical agents. 6) The duration of the practical and teaching. Therefore, the researchers propose the guidelines for improvement of teaching which they can develop. That are the management of creating the multimedia materials about practical skills, chemical calculations and preparation of chemical solution. So that students can learn by themselves and to evaluate the practical skills and preparation of chemical solutions so that the students can consider as the important issue and need more learning.