Rectangular box with a circle cut out of it on a table surface.
Activity

2-Dimensional Representations of 3-Dimensional Objects

Lesson for students who are blind or visually impaired regarding 2D and 3D shapes using tactile graphics

A.   Students will identify the parts of a two dimensional tactile graphic of a rectangular prism.
 
B.   Students will identify the parts of a three dimensional rectangular prism.
 

Rationale

Students of the 21 century are daily exposed to 2 dimensional representations of three dimensional objects.  The common core standards include presenting students with two and three dimensional objects. 

Use of three dimensional objects is always preferable to the two dimensional representations, but with direct and purposeful instruction, a blind student can access the dimensional representations with understanding. Giving direct and purposeful instruction to a braille reader prepares them for accessing tactile graphics with ease as well as the deeper understanding of what the graphics represent. 

 

1.  Present the student with the rectangular box, and give them time to explore it.
 
2.  Encourage using both hands to explore the box
 
3.  Ask them to describe what they notice, leading them in a discussion with some of the following questions:
 
* This lesson is for: student totally blind, braille reader, audio learner, advanced academics: however, although a strong braille reader, tactile images pose a very significant challenge. The lesson would also be extremely appropriate for a blind or visually impaired learner, or a learner who has difficulty learning concepts
 
teaching 2d and 3d collage

 

 

By Maureen M. Lewicki

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