Tactile Construction of Mathematical Meaning: Benefits For Visually Impaired and Sighted Pupils, Stylianidou, A, & Nardi, E. (2019)
The authors’ study explored whether UDL practices in math fostered better inclusion and benefited all students. 29 lessons were observed from four classes of students aged 6 to 10. However, the article focused on the interactions and descriptions with shapes of just two students, “Luke”, visually impaired, and “Zak”, sighted.
The activity involved Zak and Luke describing a triangle and another shape. The teacher made both shapes from waxed yarn. The other shape was a circle with a small straightened section. Next, the teacher handed out physical circle manipulatives of various sizes to compare to the original “near circle” shape.

(Image: Stylianidou, A, & Nardi, E. (2019), p. 346)
Highlights from each student: Zak was uncertain of the straight line using his eyes. He was confident in the existence of the straight line through feel. Zak made an interesting comment, “the hidden facts on the shapes.” (p. 348) Luke commented that the circle would roll more and the “near circle” would bob up and down. Luke's action descriptions were vastly different from his peers who used typical textbook vocabulary.
My first stop was my skepticism of the rigidity of this waxed yarn material to make shapes. Even if I were to notice the small straight section with my eyes or fingers I would have assumed it was an imperfection of a circle caused by the material. That is to say I’d assume the teacher meant to make a circle.
Another stop occurred when I read “being aware of the characteristics of vision and touch - vision is holistic and touch is gradual, allowing for the exploration of an object from its individual parts to whole.” (p. 346) Stopping and thinking about the pedagogy or characteristics offered by each sense was quite an “Ah Ha!” moment. It fostered memories of my varying fishing experiences. Growing up in Nova Scotia I learned to fish by watching bobbers. However, moving to the Arctic I struggled with jigging and relying on my tactile reflexes to hook a fish.

My question this week is in relation to Zak’s use of multiple senses to see the “hidden facts on the shapes” and the more traditional views of mathematics that using senses are inferior and cannot be trusted. If we were to use multiple senses in a scientific way then would such a practice be seen as more trustworthy or less inferior? That is, analyzing and comparing the data gained from each sense allows us to test, probe, and justify our conclusions and hypotheses, like how Zak was able to see the straight edge after feeling it.
My Hexaflexagon Activity (Note: the only bagels available in my community were partially pre-cut for easy "rippability". So the cuts seen in the third video were impossible)
Source of template: https://www.uua.org/re/tapestry/multigenerational/miracles/session-5/leader-resource-1
The first 10 images show the various centers that were discovered. I marked them in unique ways. However, despite my twisting and turning I noticed some potential uncolored centers as seen on the outsides in the second set of images. I’m thinking there are probably 12 unique centers based on the multiple of 3 (triangles) and 6 (hexaflexagon).


How might the hexaflexagon experience affect the learner's understanding of the mathematical patterns? In the video, Hart amusingly creates her own unique vocabulary based on her tactile actions while also using traditional vocabulary like clockwise and counterclockwise. Much like this week’s introduction mentions a movement vocabulary.
Such experiences are great practices for students to see, feel and verbalize “actionable” textbook vocabulary. At the same time, students can create their own vocabulary for actions they see in which they may not know the textbook word or perhaps there is no such English word. I feel, this “student speak” would be packed with student understanding and ripe for teacher probing.
I attempted to create my own action math vocabulary as I was playing with the hexaflexagon. Alas, I think I’m too grown up, I could not get my imagination to engage in making new words. I could only think of already existing words like rotate and the flexibility of the paper as more and more exploration was done. Perhaps, now as I write this post, I could create the word “open-up-ability” for when a squeeze and a pull could reveal a new side. I did use the word "rippability" in reference to easily pulling apart partially pre-cut bagels. I thought I was inventing a word but turns out it's a geological term.