This is the complete set of all 20 Pre-Calculus Board Sessions. These twenty sessions will take teacher and student through the entire year of a typical Pre-Calculus course at the high school level . . . giving problems that constantly review and blend topics, challenge,"come out " relatively nicely (No calculator is needed.) . . . AND have solutions with explanations! ( An early aside . . . Though this was NOT their original purpose, any of the twenty sessions included in this package would b