"Former teacher who writes/edits SAT and ACT math prep manuals"
...have been a high school math teacher (geometry, algebra, and trig) and a college teacher (statistics). More recently, and for many years, I have been involved in editing manuals for the math portions of tests such as the SAT,
ACT, GMAT, and state proficiency tests throughout the US. This has often involved writing the problems as well as explanations...
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Offering
10 subjects, including ACT Math