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Remote Ready Biology Learning Activities has 50 remote-ready activities, which work for either your classroom or remote teaching.
Independent assortment comment
Your argument makes sense to me, but I have never heard independent assortment used the way you are proposing. So, I checked three genetics textbooks to see if perhaps I had missed something, and in all three cases their discussion of independent assortment referred exclusively to meiosis 1. So, I agree with your biological interpretation, but pedagogically the interpretation in the game and the textbooks probably is the best approach for most teachers. This is just one of many simplifications we use in teaching biology!