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Remote Ready Biology Learning Activities has 50 remote-ready activities, which work for either your classroom or remote teaching.
Huck Finn, redux
I'm remembering an essay (can't find it now....) suggesting that the open spaces for play available to the children of my generation, in woods, fields and streams, has been replaced, for our children's generation, by sites of unsupervised play on the internet...the point here being less the endlessness of it all than the freedom to figure it out on your own, w/out adults telling you where to go and how to get there...