Re: Likely teaching Math (grades 6-12 possible) - wanting to brush up
I really doubt that there is any need to go back and study Algebra. Pretty much anything you would need to teach HS should be second nature. The only things you might need to remember are you basic Trig Identities and Matrix Multiplication.
If you just graduated school then I'm sure you can find a friend who still has their Calculus textbook.
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