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This teaching aid is designed for the blind kids, especially for the beginners to help them learn Braille bumps well. On the market, the raised dots on the teaching aid are not obviously different to read with the fingertips, which results in a numerous of learning obstacles for the blind young children in their daily life. Under such circumstances, cost, material, and texture of the derive are taken into account to guarantee the blind students fluency as well as safety while using it.
Changhua City, Taiwan