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Reflections: An eModule for echolocation education

An Android-based eModule app has been designed and developed for science, technology, engineering, and mathematics (STEM) education. The eModule consists of: (1) an Android demonstration of echolocation; (2) a set of notes describing the functionality of the app, the basics of echolocation, and its application to advanced signal processing systems such as RADAR, LIDAR, and SONAR; (3) quizzes to test the concepts introduced by the demonstration and the notes; and (4) companion videos. The eModule is, therefore, a holistic teaching and learning app that can be used across various grade levels including K-12, undergraduate signals and systems, and graduate DSP education.