when the wifi goes down

On the third day of school the wifi refused to play nice.
Today we got a warning that there might be a maintenance related power outage during the school day.
No problem, I'm a physics teacher.  The ramps, spring scales, and pendulums still work when the network is down.

confession:  if the wifi goes down during my free periods, I don't sit and refresh web pages for 30 minutes.  I go outside and take a walk.

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