I very much hope that this Prague teacher doesn't mind me sharing this video.  It is the best KG class I have seen on You Tube so far.  Great to see so much done in 20 minutes
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And there seem no discipline issues, no concentration issues, hardly any materials needed.  PERFECT.
I have cancelled my own classes this week to avoid an epidemic of flu.  So time to spend on learning my self, getting things sorted and preparing projects.