The Development of Learning Achievement Using a Supplementary Learning Package on Tensile Stress and Tensile Strain for Students in the Industrial Technician Diploma Program at Samut Prakan Technical College

Abstract

          This experimental research aimed to 1) develop a supplementary learning package on tensile stress and tensile strain, 2) study the learning achievement on tensile stress and tensile strain, and 3) investigate students' satisfaction towards the supplementary learning package. The sample group consisted of 30 students in the Industrial Technician Diploma Program at Samut Prakan Technical College, selected by purposive sampling. The research instruments included a supplementary learning package on tensile stress and tensile strain, a learning achievement test on tensile stress and tensile strain, and a student satisfaction questionnaire towards the learning package. Data were analyzed using mean, standard deviation, percentage, and t-test for dependent samples.
          The research findings revealed that 1) the developed supplementary learning package on tensile stress and tensile strain had an efficiency of 88.75/84.67, which was higher than the set criteria of 80/80, 2) students who learned through the package had a significantly higher learning achievement posttest score than the pretest score at the .05 level. level, and 3) overall, students had the highest level of satisfaction towards the supplementary learning package on tensile stress and tensile strain (  = 4.54, S.D. = 0.52).