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Unit Study
The Big List of Unit Study Hands-on (and Hands-off) Curriculum
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Classical Education
Good breakdown here: https://howdoihomeschool.com/homeschooling-methods/classical-homeschooling-approach/
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Charlotte Mason
https://simplycharlottemason.com/
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Great Minds in Education
In no particular order, added as they occur to me. Maria Montessori Peter Kline