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In response to Charles: Thanks. I agree that the 2061 maps are too broad to be much help. I don’t think I want to abolish the atomistic statements (although I did think we were in danger of breaking some down into quarks and leptons), but I do think it would be useful to bind some together to form molecules which we treat as entities because they are most likely to be dealt with at the same point in teaching. If the atoms are a few daltons, the molecules might be hundreds of daltons (sugar, not starch).

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