Name of teaching material
Concave 3D composite shapes self-made product
Japanese Page URL
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| Target |
Children with visual impairment in the 5th grade of elementary division who are in a class for children with single disability (completely blind or low vision). Children who can make the effort to imagine composite shapes drawn with dots. Children who can use this teaching material along with its net. |
|---|---|
| Disability category | visual impairment |
| Teaching units / Applicable scenes | arithmetic, mathematics |
| Specific purposes |
･ To remind children that to obtain the cubic volume of a solid they need to start by thinking how many 1-cm3 cubes they can fit into the solid. ･ To guide children so that they will be able to recognize that the volume of a composite shape made by combining many cuboids can be obtained by using the concept of separation and combination. |
| Considerations for disability characteristics | The whole teaching material, or many components of the whole object, can be created with a scale on it in a relatively short time to meet the child’s actual needs. |
| Expected effects and results | The children were able to understand that they could determine the volume of a composite shape by making use of knowledge they already had. |
| How to use | Initially, the teaching material was made of a rigid plastic foam. However, occasionally, this material gradually became smaller with use and was thus unable to maintain its original intended size. This time, a fused deposition modeling (FDM)-type 3D printer was used, and this enabled permanent preservation of the initial condition irrespective of the amount of pressure applied to the teaching material. With the 3D printer, the teaching material can be created with a scale on it in 1-cm increments, or any separate part of the composite shape can be created as needed. In addition, the material has high lamination accuracy and is therefore soothing to the touch; this was also a factor that motivated children. |
| Related teaching materials and information | Tokyo Shoseki, New 5th grade Math, Book 2 – Let’s think of how to express the volume of a cuboid or a cube |
| Useful for other students |
- Informant Takeshi Yamada (Special Needs Education School for the Visually Impaired, University of Tsukuba)
- Keywords *
- Created 2016-11-11 11:55:18
- Updated 2020-06-08 14:18:49