Developing a Physics Instructional Package for Mathayomsuksa 5 Students: Enhancing Integrated Science Process Skills in the Study of Light as Waves and Electromagnetic Radiation

Abstract

The objectives of this research article were: 1) to develop an instruction package for physics 2) to determine the efficiency of the package using the 80/80 criteria for effectiveness. 3) to ascertain the effectiveness index of the instructional package, aiming for a value of 0.50 4) to compare students' learning achievements before and after using the instructional package. 5) to compare the integrated science process skills of students before and after using the instructional package. 6) to study the students’ satisfaction towards the instructional package. The sample group comprised of 36 students from M.5/4 in the first semester of 2023.This group was selected using the cluster random sampling method. The research employed a One Group Pretest-Posttest Design. The results showed that: 1) 10 sets of the instructional package were developed, achieving an Index of Item Objective Congruence of 0.93 as evaluated by 5 experts. 2) The Physics instructional package had an efficiency value (E1/E2) of 83.04/81.20. 3) The instructional package's effectiveness index was 0.71. 4) There was a statistically significant increase in learning achievement scores at the .01 level. 5) There was a statistically significant improvement in Integrated Science Process Skills scores at the .01 level. and 6) The students expressed a very high level of satisfaction with the instructional package.