Learning Calculus with GNU Octave provides a modern, computational approach to understanding fundamental calculus concepts through visualization and hands-on experimentation. GNU Octave, an open-source numerical computing environment, allows students to explore topics such as limits, continuity, differentiation, integration, and differential equations in an interactive and intuitive manner. The course emphasizes practical understanding alongside analytical techniques, enabling students to verify theoretical results, experiment with real-world examples, and develop problem-solving skills essential for science and engineering applications. GNU Octave’s MATLAB-compatible syntax, powerful plotting capabilities, and extensive numerical libraries make it an ideal platform for learning and applying calculus concepts efficiently. This course is designed for undergraduate and postgraduate students seeking to strengthen their mathematical foundations while gaining valuable computational skills applicable across engineering, science, and data-driven disciplines.