[Blindmath] Raised Lines for Dry Erase Boards

[Billy Baer]

Hello,
 
As a high school math teacher, I have great difficulty writing on the
whiteboard. Does anyone have any ideas about how I can "emboss" the board
with horizontal raised lines to write on to explain problems and to create a
Cartesian plane to plot points and draw graphs. I do not want it to be
permanently affixed to the whiteboard because I want to be able to take it
off and on easily as well as being able to use a dry erase marker. 
 
I already use an interactive smart board. However, I still need to use a
regular whiteboard and require raised lines.
 
Thanks,
Bill Baer