Dr. Robinson demonstrates how to create and manipulate a parabola using the Desmos shaded parabolas using the graphing calculator. This process is specifically designed for blind and low vision students. She begins by typing an equation. Desmos automatically adds sliders, allowing the adjustment of the graph’s shape in real-time.
As Dr. Robinson runs the equation, the parabola expands, resembling the curve of a ball in motion. She explains the importance of embossing the graph so students can physically feel its structure on the XY plane. This tactile approach helps students understand mathematical concepts more concretely.
To enhance accessibility, Dr. Robinson uses the “Alt + T” command to activate the audio trace. This feature provides valuable auditory information about the graph. She also slows down the narration using “Control + Shift + Page Down,” ensuring clarity and comprehension.
Next, Dr. Robinson shares the graph with her students using the “Insert + F5” command. She exports the graph as a Braille-ready image, making it accessible for students who rely on tactile feedback. After downloading the image, she opens it in a photo editor to enhance contrast. This step ensures that the lines are clearly defined for the student.
Dr. Robinson then pastes the edited image of Desmos shaded parabolas into Tiger Designer, a software used to prepare tactile graphics for printing(emboss). Using “Control + P,” she embosses the graph on her ViewPlus embosser, allowing students to feel the parabola and compare it with what their sighted peers see.
This hands-on approach ensures that blind students can fully participate in graphing activities. Dr. Robinson’s method integrates technology and tactile feedback, making math accessible and engaging. Through these steps, she empowers students to understand and interact with complex mathematical concepts. This demonstration showcases the effective use of Desmos and related tools to enhance learning for visually impaired students.