Database of Teaching Materials and Methods for Special Needs Education

Name of teaching material

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Target	Blind or partially sighted children at the age-appropriate grade level Elementary, Lower Secondary, and Upper Secondary Departments (6 to 17 year olds)
Disability category	visual impairment
Teaching units / Applicable scenes	arithmetic, mathematics
Specific purposes	To enable children to: --draw line segments --measure lengths
Considerations for disability characteristics	The ruler ends are reduced to make it easier for children to place the ruler on objects. Since 1-mm increments are difficult to read with the fingers, the ruler is marked with 5-mm increments, which are the smallest scale division that can be easily read with the fingers. A small notch is provided every 5 mm. An easy-to-see display is added to the ruler, for partially sighted children.
Expected effects and results	Children are able to measure the length of line segments, and confirm the measurements with their hands. Children are able to draw line segments of specific lengths.
How to use	[Drawing a line segment] Draw a line with a ballpoint pen or pencil along the ruler. A line segment of a specific length can be drawn using the notches spaced at 5 mm on the ruler. [Measuring a length] Align “0” on the ruler with one end of the object. Check the point on the ruler that corresponds to the other end of the object. Read the length on the ruler.
Related teaching materials and information	Set of rulers
Useful for other students

Informant Special Needs Education School for the Visually Impaired, University of Tsukuba
Keywords Measurement, drawing, ruler, observation with touch motion