Notes.
I. Mnemonics help you remember things. I’d recommend you dig into this stuff and make the most of it.
1. "Examples of Mnemonics: 4 Tools to Help Your Memory"
https://examples.yourdictionary.com/examples-of-mnemonics.html2. The Great Wikipedia:
https://en.wikipedia.org/wiki/Mnemonic3. "Mnemonic Devices for Students"
https://www.thoughtco.com/mnemonic-devices-tools-77554. A Quadratic Formula song
https://www.youtube.com/watch?v=2lbABbfU6ZcII. Abraham Lincoln and the Structure of Reason by David Hirsch and Dan Van Haften:
https://www.amazon.com/Abraham-Lincoln-Structure-Reason-Hirsch-ebook/dp/B004H1U1MK/From the description of the book: “For more than 150 years, historians have speculated about what made Abraham Lincoln great. How did Lincoln create his iron logic, his compelling reason, his convincing oratory, and his memorable writing? Some point to Lincoln’s study of grammar, literature, and poetry. Others believe it was the deep national crisis that elevated Lincoln’s oratory. Most agree though that he honed his persuasive technique in his work as an Illinois attorney.
“Authors Hirsch and Van Haften persuasively argue, for the first time, that it was Lincoln’s in-depth study of geometry that gave our sixteenth president his verbal structure.”
III. ”An 'Old-Fashioned' Nationalism: Lincoln, Jefferson, and the Classical Tradition" (Journal of the Abraham Lincoln Association, Volume 23, Issue 1, Winter 2002, pp. 55-67) by Drew McCoy:
i.
https://quod.lib.umich.edu/j/jala/2629860.0023.104/--old-fashioned-nationalism-lincoln-jefferson?rgn=main;view=fulltext
ii.
https://quod.lib.umich.edu/j/jala/2629860.0023.104?view=text;rgn=main
IV. Plane Geometry by Welchons and Krickeberger is available on The Internet Archive:
https://archive.org/details/planegeometry00welc2. As is a Teachers’ Key:
i.
https://archive.org/details/planegeometryteawelc/page/184/mode/2upIi.
https://ia801000.us.archive.org/25/items/planegeometryteawelc/planegeometryteawelc.pdf)
3. And a Teachers’ Manual, Numerical Answers, Answers to Separate Achievement Tests
https://archive.org/details/planegeometryteawelc_0V. "Building a Better Vocabulary" by Kevin Flanigan has some good lectures about vocabulary and language. Recommended.
https://www.amazon.com/Building-Better-Vocabulary-audiobook/dp/B06XSS46TH/