THE DEVELOPMENT OF CHEMISTRY INSTRUCTIONAL HANDBOOK BY BLENDED LEARNING TO ENHANCE ACHIEVEMENT ON CHEMISTRY AND SCIENCE PROCESS SKILL FOR VOCATIONAL CERTIFICATE (SKILL BRIDGING PROGRAM) OF POLYTECHNIC INSTITUTE OF BANTEAY MEANCHEY PROVINCE, KINGDOM OF CAMBODIA

Abstract

This research was to develop the chemistry instructional handbook by blended learning to enhance achievement in chemistry and science process skills for the vocational certificate (Skill Bridging Program) of the Polytechnic Institute of Banteay Meanchey Province, Kingdom of Cambodia. The research objectives were 1) to develop the chemistry instructional handbook by blended learning for the Skill Bridging Program of Polytechnic Institute of Banteay Meanchey Province, Kingdom of Cambodia. 2) to study the science process skill of the students who learn with chemistry instructional handbook by blended learning. 3) to the comparison of achievement in chemistry learning before and after learning with the chemistry instructional handbook by blended learning. 4) to study teachers’ satisfaction who using the chemistry instructional handbook by blended learning. The 40 samples were vocational certificate students and 2 teachers from the Polytechnic Institute of Banteay Meanchey Province, sample random sampling. The implementation lasted long 7 weeks. Data were statistically analyzed using mean, standard deviation, and dependent t-tests. The research findings were as follows:

1. The result of the chemistry instructional handbook by blended learning. Composed of 10 components; 1) instruction, 2) content, 3) objective, 4) learning process, 5) media/technology, 6) assessment and evaluation, 7) units, 8) how to use media and technology, 9) reference, and 10) bibliography. The learning process of the chemistry instructional handbook by blended learning there are 7 steps consists of; 1) elicit, 2) engage, 3) explore, 4) explain, 5) elaborate, 6) evaluate, and 7) extend. The technology or media of chemistry instructional handbook by blended learning as; Facebook, YouTube, Google application, Kahoot app, PowerPoint, and PhET app. The learning assessment of chemistry instructional handbook by blended learning as; formative assessment (Pretest, Worksheets, Science process skill (5 skills), Class and lap participation). Summative assessment (Posttest). The blended learning is face-to-face (50%) and online (50%).

2. The result of the study science process skill of the students who learn with chemistry instructional handbook by blended learning. In unit 1, science process skills are neutral (=3.30, S.D.=0.55), unit 2 of science process skills are high (=3.51, S.D.=0.50), unit 3, of science process skills, are (=3.75, S.D.=0.54), unit 4, of science process skill, are (=4.10, S.D.=0.50) which accepts with the research hypothesis

3. The result of the comparison of achievement in chemistry learning before and after learning with the chemistry instructional handbook by blended learning are different levels of statistical significance of 0.05.

4. The result of the study teachers’ satisfaction who using the chemistry instructional handbook by blended learning was at the level of “high”.

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