Supporting diagrammatic reasoning for users with visual impairments with NoVAGraphS.

This paper presents a case study on how individuals with visual impairments interact with mathematical diagrams using NoVABOT, a dialogue-based system developed for the NoVAGraphS project. The study focuses on the experience of a blind participant navigating function diagrams represented as Euler-Venn sets. Through verbal interaction with NoVABOT, the participant explored key characteristics of the diagrams, demonstrating how the system can support the development of diagrammatic reasoning by guiding users through a process of inquiry and reflection. The findings illustrate how NoVABOT enables users with visual impairments to access and interpret graphical information, fostering deeper engagement with mathematical content. This case study highlights the potential of dialogue systems to bridge accessibility gaps in STEM education.