The materials in this bulletin consist of a series of daily lesson plans for use by teachers in presenting a modern program of eighth year mathematics. There is an emphasis on (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. Classroom materials are developed on such mathematical concepts as measurement, triangles and quadrilaterals, square and cubic measure, systems of numeration, and the set of integers. (RP)