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The researcher has developed the graphical user interface for online learning in polar coordinate system. The research has compared the learning achievement of the experimental group by using graphical user interface in polar coordinate system and the control group by using traditional method. Furthermore, the study has also investigated the students’ opinions by using graphical user interface in polar coordinate system. The sample group consisted of students who enrolled in Engineering Mathematics course in the first semester of the 2021 academic year in Valaya Alongkorn Rajabhat University under the Royal Patronage, Pathum Thani. The research was obtained by simple random sampling. The sample group was divided into experimental and control groups. The research instruments consisted of the online learning lesson plans in polar coordinate system, the graphical user interface about the another representation of a point in polar coordinates, the polar-Cartesian coordinate conversion calculator and graphing polar equations, an achievement test in polar coordinate system, and a survey questionnaire on opinions by using graphical user interface in polar coordinate system. The statistical methods were used in data analysis: percentage, mean, standard deviation, analysis of variance, and independent sample t-test. The research findings showed that 1) the graphical user interface for online learning in polar coordinate system had been developed with the quality at the highest level, 2) learning achievement of the experimental group by using the graphical user interface had higher achievement than the control group by using traditional method at .05 significant level, and 3) students who learned by using the graphical user interface were satisfied with a high level.
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"ข้อคิดเห็น เนื้อหา รวมทั้งการใช้ภาษาในบทความถือเป็นความรับผิดชอบของผู้เขียน"
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