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Remote Ready Biology Learning Activities has 50 remote-ready activities, which work for either your classroom or remote teaching.
"wrongness" and yellow
Actually, if we did real science in K-12 we wouldn't have to design science experiments to fail. Those experiences, which are indeed important, would occur naturally. As for yellow, I agree with you that its a beautiful idea that everyone may see it differently. What's even more interesting is that yellow is in fact ONLY a human construction; it has no physical reality. See /bb/neuro/neuro06/notes.html#color.