I have fond memories of watching Cosmos as a child; Carl Sagan is one of my favorite science teachers.
I think we need to move out of the mindset that school is for learning and home is for entertainment. Once they get out of the Blue's Clues/Sesame Street stage, they don't want to risk accidentally learning something from the TV. I've got kids in kindergarten through ninth grade, and they tend to have zero interest while at home in anything that they might learn from. (Yes, that's their parents' problem. Working on it.

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