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Notation is a tool of thought in reasoning and communication [1]. However, to become an effective tool of thought, each notation expression must be properly
perceived. Blind and partially sighted persons run into difficulty in working with spatially represented mathematical expressions.
Our goal is to develop a new multimodal notation for mathematics such that visually
impaired people can:
- perceive and reflect on spatially represented mathematic concepts (e.g. graphs, diagrams, etc.);
- manipulate expressions in such notation;
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