Paper Title
Efficacy of Interactive Learning Software in Great Circle Navigation Instruction on Student Learning

Abstract
The objectives of the study were as follows: 1) to describe the creation of interactive learning software(GCN software) utilizing MATLAB and its graphical user interface to teach the Great Circle Navigation; 2) to assess the quality of GCN software; and 3) to examine the efficacy and contentment of learning with GCN software. Four phases comprise the research procedure: analysis, design and development, evaluation, and testing. The research tools included GCN software, a quality rating form, pre-and post-tests, and retention questionnaires. A significant difference test for the student's achievement between the experimental and control groups and independent t-tests and descriptive statistics were used to evaluate the software's quality. The result indicates that the software's quality was at the right level in all three aspects: usability, rectification, and functional requirements. The control and experimental groups of students performed significantly differently on the test; the experimental group performed better than the control group at the .05 level. Furthermore, the developed software was met with considerable user satisfaction. The software can be an instructional resource for instructors and a self-study supplement for students. Keywords - Interactive Learning Software, MATLAB-GUI, Great-Circle Navigation.