end dot symbols

[jocassidy]

Can you please tell me the braille symbols to use for open and/ closed dots marking the ends of a line graphed on a coordinate grid. I know the symbols used on a number line and found symbols for an arrow shaft, but no reference to a line (usually representing an inequality) on graph paper.
Jo C.

[dworthing]

I'm not sure what you are asking me. Graph lines should be tactile so no braille characters would be used. Are you showing the graph line as braille? If drawing a tactile line, you would have to designate symbols (not braille dots) as representing either an open dot or a closed dot if they are shown in print. Perhaps a picture would help me understand what you are asking?

[dworthing]

I am asking if there are braille symbols to show open or closed circles at the ends of a tactile line drawn on APH low-relief graph paper. Do I use the braille symbols used on a number line (X for open and full cell for closed)? The line is drawn with a spur wheel and the end points are either puff paint or hi-dots and I would braille the open or closed symbol next to the marked end point. These are disposable worksheets for an Algebra 1 student.

[jocassidy]

As far as I know, there is no way to provide the meaning of the tactile point with braille dots. I would suggest keying a different kind of tactile point for each meaning. If anyone is aware of a braille way to do this, please let us know. Dorothy

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