The 2000 Mathematics Curriculum Framework is one of seven sets of standards created toadvance educational reform in Massachusetts. It is the work of teachers and administra-tors in pre-kindergarten through grade 12, mathematics education professors, universitymathematicians, and community members working with staff from the Department ofEducation. Organization of the document The guiding principles articulate a set of beliefs about teaching, learning, and assessingmathematics in Massachusetts. Five strands organize the mathematical content: NumberSense and Operations; Patterns, Relations, and Algebra; Geometry; Measurement; andData Analysis, Statistics, and Probability. At the beginning of each strand are the broadconcepts from NCTM Standards 2000; they guide the clustering of the learning standardsin that strand. In grades PreK–6, each of the broad concepts is identified by an icon (&, q,v, s), and the icon at the end of each standard indicates the NCTM concept to which it islinked. Because the standards are grouped by broad concepts, the order in which theyappear in each grade span is not necessarily the order in which they might be taught.