The subject-specific material (facts, definitions, information, formulas, procedural skills, basic concepts, grammatical structures) comprising each discipline. This material can be studied independently, practiced or memorized at a student's own pace. Content comprises 30% of a student's grade: 21% through Power Focus Areas, which are required, and 9% through Additional Focus Areas, which are optional, but highly encouraged. 9th EditionWilliam Kleitz440 explanations
3rd EditionAlan B. Marcovitz414 explanations
9th EditionWilliam Kleitz440 explanations
11th EditionElizabeth A. Weaver, Frederik R. Mottola, Owen Crabb, Randall R. Thiel899 explanations