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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal">I am exploring using Desmos, with a refreshable braille display.
<o:p></o:p></p>
<p class="MsoNormal">The program Desmos is a web-based graphical calculator.<o:p></o:p></p>
<p class="MsoNormal">It plots a math expression to the screen, can sonophy the expression, has some accessibility designed in, and works somewhat okay with the Graphiti tactile display.<o:p></o:p></p>
<p class="MsoNormal">If you have used Desmos as a blind person, I would like to hear how it helped you or any approaches you found most useful when working with it.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">There is a useful link, <a href="https://www.desmos.com/accessibility" originalsrc="https://www.desmos.com/accessibility" shash="eWP80eacNS5OlZxKd4O/hGkf5EUbvKsn9rizJFuTcr9O0trcAe/9AGhlyYLgh+e2B252XQPTuOH9lb1igfeZAe4CGMLiF+duJ24XbygYspj/JU7WajI6ffMBYDQr3duRlg9R+ZaUDG7qvLyq6tuZ4tCZpd/X9OjfmrjWfMKB5Mo=">
https://www.desmos.com/accessibility</a>.<o:p></o:p></p>
<p class="MsoNormal">To turn on Nemeth Braille mode, use Alt + N.<o:p></o:p></p>
<p class="MsoNormal">In the Nemeth mode, the refreshable braille display displays an expression in the Nemeth braille code as expected.<o:p></o:p></p>
<p class="MsoNormal">I found that the JAWS cursor appears in the correct position for easy editing when the Nemeth braille mode is enabled.<o:p></o:p></p>
<p class="MsoNormal">In this case it is straight forward to edit the math expression.<o:p></o:p></p>
<p class="MsoNormal">With the Nemeth mode turned off symbols such as the equals sign are appearing on the braille display such as "equals" and I find myself usually off by one character when I try to edit the middle of an expression.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">To explore a graph, use alt+t.<o:p></o:p></p>
<p class="MsoNormal">Sonophy the graph with the choice h.<o:p></o:p></p>
<p class="MsoNormal">Arrow left or right and the x-value decreases or increases.<o:p></o:p></p>
<p class="MsoNormal">There is a button on the screen that goes to the next point of interest.<o:p></o:p></p>
<p class="MsoNormal">The points of interest are the maxima, the minima, and the zero-crossings sorted in ascending x-value.<o:p></o:p></p>
<p class="MsoNormal">As you arrow left and right, the x value and the corresponding y value are spoken.<o:p></o:p></p>
<p class="MsoNormal">If you arrive at a point of interest then JAWS speaks extremum, for example, and lists the x and y values.<o:p></o:p></p>
<p class="MsoNormal">Press alt-t to toggle out of the graph description mode.<o:p></o:p></p>
<p class="MsoNormal">It should return you to the editable expression list.<o:p></o:p></p>
<p class="MsoNormal">You can zoom in and zoom out with alt- and alt+.<o:p></o:p></p>
<p class="MsoNormal">To get back to a default zoom I threw away my expression and just refreshed the page.<o:p></o:p></p>
<p class="MsoNormal">I am sure there is a better way to do it but I have not found it yet.<o:p></o:p></p>
<p class="MsoNormal">The documentation suggests using alt-shift-z for zoom to fit as necessary. </p>
<p class="MsoNormal"><span style="mso-ligatures:none">Very best,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-ligatures:none">John<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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