การพัฒนาชุดการสอนกีตาร์เบื้องต้น สำหรับนักเรียนชั้นมัธยมศึกษาปีที่ 1 โรงเรียนยอแซฟอุปถัมภ์ แผนกสามัญหญิง อำเภอสามพราน จังหวัดนครปฐม

Abstract

The purpose of this research was to develop the basic guitar instructional package for mathayom 1 students, Joseph Upatham School, Girl Department, Sampran, Nakhonpathom with an 80/80 efficient standard. The sample of this research consisted of 17 mathayom 1 students who were register in music subject of Joseph Upatham School in semester year of 2016. The research instrument was the basic guitar instructional package for mathayom 1 students, Joseph Upatham School, Girl Department, Sampran, Nakhonpathom. Data was analyzed by percentage (%). The results of this research found that the basic guitar instructional package for mathayom 1 students, Joseph Upatham School, Girl Department, Sampran, Nakhonpathom averaged at 80.15/83.42 which was higher than an 80/80 efficiency.