for all who make decisions that affect the mathematics education
of students in pre-kindergarten through grade 12” (p. ix). NCTM
is an organization of over 110,000 mathematics educators
concerned with pre-K–12 mathematics education. This update of
the NCTM's three previously developed sets of standards for
curriculum, teaching, and assessment is intended to establish a
curriculum framework to bring focus and coherence to K–12
mathematics. The document was developed through an extensive and
inclusive process that engaged a wide spectrum of experts on
issues concerning mathematics education. As such, Principles and
Standards represents a negotiated position about appropriate
content for school mathematics to which educators should give
careful consideration. The developers offer the standards as a
guide for ensuring quality, developing goals, and promoting
change by suggesting common language, examples, and
recommendations to engage people at state, provincial and local
levels in conversations about mathematics