Web-Based Instruction for Review on Use Formulars and Function for Diploma Vocational Students

Abstract

The purpose of this study were to 1) to develop and evaluate the quality as well as the efficiency of web- based instruction for review on the use of formula and function for high vocational certificate students, and 2) to compare pre-test and post-test learning achievement of the students after the experiment. The samples in this study, were 60 students in the academic year 2014 selected by simple random sampling which were divided into two groups, first group of 30 students for efficiency testing of WBI instrument and second group of 30 students for achievement comparison between pretest score and posttest score. The research instruments were the web-based instruction lessons for review on the use of formula and functions, WBI evaluative questionnaire and the achievement test. The statistics used in the analysis were mean ( ), standard deviation (S),and t-test for Dependent Samples. The consistency index (IOC) was reported between 0.67 – 1.00 while the level of difficulty (P) was between0.40 – 0.70; the discrimination (R) was between 0.20-0.67 while the reliability (KR 20) was at 0.82. The result showed that the quality of web-based instruction for review lessons was at an excellent level ( =4.75, S =0.15). It is also found that the content of the lesson was at an excellent level ( =4.83, S = 0.39); in addition, the technical and media production was at an excellent level ( =4.69, S = 0.34). In correspondence with the assumption that it should not be less than 80/80 when comparing to the overall learning achievement of e-learning, the efficiency of web-based instruction lessons (E₁/E₂) was 80.11/82.17 respectively, and it is revealed that post-test achievement is higher than that of pre-test at 0.01 significant level.