Web-Based Instruction

Abstract

The objectives of this study were to develop a Web-Based Instruction by constructivism theory on Photoelectric Effect Lesson for grade 12 students, to compare learning achievement of the students before and after using the instruction and to examine satisfaction toward the instruction among the students. The samples of the study comprised 1 classroom, 49 people for grade 12 students in Science-Mathematics Program at Assumption College Sriracha in the academic year 2/2014, selected by Cluster Random Sampling method. The research instruments were a Web-Based Instruction with constructivism theory on Photoelectric Effect, an instruction quality assessment form, a learning achievement test on Basic Programming Language with Item Objective Congruence (IOC) = 0.67-1.00, Difficulty Index (p) = 0.22-0.78, Discrimination (r) = 0.25-0.69 and Reliability (KR 20) = 0.91, and a learning satisfactory questionnaire with IOC = 0.67-1.00 and Reliability = 0.93. The data were analyzed by using arithmetic mean ( (cid:27)(cid:3365) ), standard deviation (S) and Paired t-test for dependent samples. The results showed that the content quality and media production quality of the Web-Based Instruction with constructivism theory on Photoelectric Effect were at a high level ( (cid:27)(cid:3365) S Learning achievement of the students was found to increase with significantly higher post-test scores when compared to the pre-test scores at 0.05. The students’ satisfaction toward the instruction was at an excellent level ( (cid:27)(cid:3365) = 4.56 and S = 0.60). (cid:3)