The contemporary mathematics program set forth in this publication developed as a result of experimentation and evaluation in classroom situations. This is Part 2 of "Mathematics: 8th Year." Part 1, a separate bulletin, was published during the school year 1967-68. The materials in this bulletin are intended to serve as guidelines for teachers in helping students to discover and understand properties of rational numbers, equations and inequalities, irrational numbers, graphs, surface area and volume, and statistics and probability. (RP)