User research and UX review of the I3T app. Design and prototyping to improve the usability of the I3T app.

The Thesis focuses on improving the usability of the Interactive Tool for Teaching Transformations (I3T), an educational tool designed to support the explanation of geometric transformations in computer graphics. The aim of the thesis was to propose and subsequently verify user interface modifications that enhance intuitive control, reduce students cognitive load, and provide a positive user experience, thereby encouraging students to use the tool during their learning process. Based on research in the field of usability and user-centered design, a qualitative usability testing method with users and the principle of iterative design were chosen. In the initial phase, usability testing was conducted to identify key issues in user interaction with the application. Based on the identified challenges, specific improvements were proposed, which were further developed in collaboration with the I3T development team. This was followed by a cycle of iterative testing, during which the proposed modifications were verified and further refined to gradually eliminate previously identified issues, respond to newly discovered problems, and continuously improve the application's user interface. The outcome of this thesis is a more user-friendly and efficiently operable application which achieved improvements of 30-60% in selected categories based on the chosen metric. The thesis also includes recommendations for future development in the area of usability.