The purpose of this research is to study Development of Computer ted I nstruction Subject Change Management and to find out efficiencies Satisfac on towards the package. The research tools were : 1) Development of Computer Assisted Instruction Subject Change Management 2) Achievement tests 3) Quality a sessment and evaluation form for multimedia software and 4) Questionnalre of leamers satisfaction Sampling groups composed of 62 Bachelor degree (4 years) Faculty of Business Administration Rajamangala Unniversity of Technology Phra Nakhon Researchresulty revealed that the effciency of the Computer Instruction Package was at E1 / E2 = 81.65/82.39 corresponding with 80/80 creteria. Analysis to man of satisfaction of the sampling groups was rather at 4.18. It could be concluded that the Development of Computer Assisted Instruction Subject Change Management had the efficiency that could used for self study

The purposes of this research were to create and evaluate the effectiveness of Computer Assisted Instruction about Tensile test The CAI consisted of 9 lessons The sample was 20 first year diploma students in Tool and die make Department Faculty of Production Technology. Rajamangala University of Technology Phra Nakhon. First of all the students did the pre-test and then they studied via CAI. After that they did the post-test. After using CAI the result was evaluated to find effectiveness and learning achievement was analyzed. The finding showed that CAI effectiveness reached the standard of 90/90 Further more the students knowleage increased at significant level of 0.01