Main Article Content
The purposes of this research were to: 1) developed a WBI for Competency-Based Teaching Plan in Circuit Description and Microcomputer Maintenance Using PjBL with Blended Learning, 2) find performance of developed WBI 3) compare the students learning achievements before and after learning with the developed WBI, 4) study the students’ satisfaction through the WBI. The target group, was 30 undergraduate students of Nakhon Pathom Rajabhat University, which derived from drawing a simple random sampling. The research tools used Competency-Based Teaching Plan MIAP Learning, Achievements Test, and questionnaire. The statistics used mean, standard deviation, E1/E2 and t-test. The result findings showed: 1) The performance of WBI developed with the 84.13/81.28 which was higher than the criteria defined is 80/80 2) the students learning achievements after learned higher than before learned was significantly at .01 levels; and 3) The results of the students’ satisfaction to WBI were at a high level.