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Volume 35, Number 4, pages 407-416 (2024)
https://doi.org/10.26830/symmetry_2024_4_407
DIDACTIC MATERIALS FOR COUNTING ISOSCELES TRAPEZOIDS BY VISUALLY IMPAIRED PEOPLE
Neda Chehlarova
Institute of Robotics, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
Email: nedachehlarova@ir.bas.bg
Orcid: 0000-0001-6045-1709
Abstract: A system of tasks for counting isosceles trapezoids and 3D auxiliary models for them is presented. Steps for working with the 3D printed manipulatives during independent work, expected errors in counting the specific geometric figures, and ways to rationalize the counting by symmetry are described. Options for creating the auxiliary files using the XYZmaker3Dkit software product are considered.
Keywords: 3D printing, mathematics education, didactic resources, manipulatives, digital competence, visually impaired people
PACS 2010: 01.40.-d, 01.50.-i, 89.20.Bb MSC 2010: 97C70, 97G40, 97U60
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