This commentary is to be used with "Unified Modern Mathematics, Course III." Statements of specific purposes and goals of each section of every chapter of Course III are included in the "Commentary." Also included are suggestions for teaching concepts presented in each section; time estimates for each section; suggested instructional aids for presenting various concepts; references for further study; and chapter examinations which constitute a comprehensive test for each chapter. [Not available in hardcopy due to marginal legibility of original document.] (FL)