Name of teaching material
Compression kit for learners with visual impairment self-made product
Japanese Page URL
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| Target | Primary students |
|---|---|
| Disability category | visual impairment |
| Teaching units / Applicable scenes | drawing and crafts, art activities for independent living teaching and learning tools, auxiliary aids |
| Specific purposes | For most learners, art is all about learning good draftsmanship. However, blind students have an additional challenge: they must gain the conceptual ability to project three-dimensional objects on a flat surface. This requires the learner to grasp through tactile means the stepwise process for conceiving the 3-D object in 2.5-D, and finally in a 2-D perspective. To aid this process, we developed a compression kit for learners with visual impairments with Dr. Susumu OUCHI (National Institute of Special Needs Education). The aim of the kit is to help children grasp the “flattening-out” process (the process of projecting an object in Euclidian space onto planar space) and help them understand the relationship of a solid geometrical structure to its planar representations. |
| Considerations for disability characteristics |
-The compression kit for learners with visual impairments consists of a set of blocks (a cylinder, triangular prism, square prism, and a hexagonal prism) together with pieces representing each block in a compressed state as seen from a fixed vantage point (front, top-down, or lateral). -Each of the pieces represents one of the blocks compressed centrally, longitudinally, or laterally, to 3/4, 1/2, or 1/4. The kit also contains flattened-out versions of the blocks, which retain the impression of 3-D. -There are 8-12 compressed pieces to each block. -The kit is designed so that the learners can feel the 3-D objects in their hands and ascertain their shape. |
| Expected effects and results |
-By using the compression kit, learners with visual impairments will grasp the process of flattening out a 3-D object and the relationship between the solid geometrical structure and its planar representations. -The learner will gain a tactile understanding of how the 2-D representation of the same solid geometrical structure differs depending on the compaction direction (central, longitudinal, and lateral). |
| How to use |
● Understanding the compression principle To learn the compression principle, the learner compares a block (cylinder, triangular prism, square prism, or hexagonal prism) with the pieces compressed centrally, longitudinally, or laterally, to 3/4, 1/2, or 1/4, and attempts to select the corresponding piece. 1. The learner caresses the 3-D block provided. 2. The learner is asked to imagine the shape of the block based on compaction direction and rate of compression. 3. The learner selects from a set of three pieces the one that he/she thinks matches the given criteria. 4. Check to see whether the selection is correct. ● Reproducing the block using the compression principle The learner models a shape in clay. 1. The learner caresses the 3-D block provided. 2. The learner is asked to imagine the shape of the block based on compaction direction and rate of compression. 3. The learner models the envisaged block in clay. 4. The learner feels the model corresponding to the given criteria and reaffirms the compression principle. |
| Related teaching materials and information |
Tetomedemiru Kyōzai Raiburarī [Touching-and-Seeing Learning Library] Susumu OUCHI (Specially Appointed Researcher, National Institute of Special Needs Education) |
| Useful for other students |
- Informant Special Needs Education School for the Visually Impaired, University of Tsukuba
- Keywords Completely blind children, tactile learning educational materials, three-dimensional compression
- Created 2020-11-20 17:29:36
- Updated 2020-11-20 17:37:54