This curriculum bulletin is one of a planned series of bulletins designed to meet the needs of teachers and supervisors. The materials in this bulletin consist of a series of daily lesson plans for use by teachers in presenting a modern program of seventh year mathematics. In these lesson plans are developed the concepts, skills, and applications of "Mathematics Seventh Year." The material in this bulletin emphasizes (1) an understanding of mathematical structure, (2) growth of a number system, (3) relations and operations in a number system, (4) a development of mathematical skills based on an understanding of mathematical principles, and (5) concept of set in number and in geometry. The bulletin is organized into five chapters: Numbers and Numerals, Operations and Properties of Whole Numbers, Non-Metric Geometry, Factoring, and Rational Numbers (Multiplication and Division). (RP)