A resource and guide for all who make decisions that affect the mathematics education of students from prekindergarten through grade 12. Recommendations are grounded in the belief that students should learn important mathematical concepts and processes with understanding. Principles for school mathematics are presented, related to equity, teaching, learning, assessment, and technology, and standards are elucidated for school mathematics at different grade levels. Each chapter describes standards for number and operations, algebra, geometry, measurement, data analysis and probability, problem solving, reasoning and proof, communication, connections, and representation. Annotation c. Book News, Inc., Portland, OR