การพัฒนาบทเรียนแบบสืบเสาะหาความรู้สำหรับนักเรียนมัธยมศึกษาตอนปลายเพื่อพัฒนามโนทัศน์เรื่อง "โลกของเราและตรีโกณมิติ"

Abstract

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Development of an Inquiry-Based Learning Unit to Promote High School Student's Conceptual Understanding of Earth Geometry and Trigonometry

This research aims to develop an inquiry-based learning unit on "The Earth Geometry and Trigonometry" for high-school students to supplement the traditional presentation of the longitude, latitude, the great circle, the meridian, and the dateline. 27 high-school students participated in the developed learning lessons which motivated the students' in-class discussion and group working. The teachers acted as a facilitator who guided the students through the objectives with basic trigonometry and geometry which they had learned from previous lessons. The teachers also recapitulated the main ideas after each lesson. Students' achievements were evaluated. The result showed that the learning unit promoted students' conceptual understanding. The three-dimensional physical models and illustrations helped develop students' conceptual understandings of the longitude, latitude, the great circle, and its distance. The positive result implied possible good attitude toward learning mathematics realistically in the future.