I was disappointed that I couldn't get the projector to work in class, so couldn't go through the PowerPoint I had planned to cover.
After class I decided that my jerry rigged solution on the blackboard was particularly bad, so rather than rely on that I am instead moving the deadline for the Excel homework to a week from tomorrow. I trust that no student will object to that. Will talk about what other adjustments in the class schedule that necessitates on Thursday.
I contacted the people from Classroom Technology after class was over. They told me that somebody had switched off the equipment inside the cabinet. A simple reboot and that worked. Sorry it didn't occur to me to try that. If this happens in the future, perhaps one of you might suggest that plan for troubleshooting.
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