When son was in seventh grade in 90s I helped him with Math and he grasped it right away (1960s math all of them being engineer.) and teacher said that was not the way she was instructed to teach it but was smart enough to realize was reality so let me tudor my son and think she wished could change her methods.This was certainly true in 1996. Today, I don't even want to think about 'Core Math'. Core Analytical Geometry & Algebra must be really special!