ทองพันธ์ ก.; ชัยชมชื่น ส.; แสนราช จ. THE DEVELOPMENT OF ONLINE-ACTIVITY BASED LEARNING SYSTEM ACCORDING TO R2D2 MODEL AND INTEGRATED WITH CREATING OF KNOWLEDGE MAP FOR DEVELOP TO ENHANCE TEACHER COMPETENCY. J. IND. EDUC. 2016, 15, 91-97.