Major themes and recommendations / Standards for preschool and kindergarten mathematics education / Mathematics curriculum in the early childhood context / What is developmentally appropriate in early childhood mathematics education? : lessons from new research / Pre-K to Grade 2 goals and standards : achieving 21st-century mastery for all / Role of psychological research in the development of early childhood mathematics standards ; Developmental bases for early childhood number and operations standards / PSSM from a constructivist perspective / Prospective developmental perspective on early mathematics instruction / Geometric and spatial thinking in early childhood education / Measurement in Pre-K to Grade 2 mathematics / Making sense / Number worlds : a research-based mathematics program for young children / Fostering preschool children's mathematical knowledge : findings from the Berkeley Math Readiness Project / Technology in early childhood mathematics : Building Blocks as an innovative technology-based curriculum / Mathematics problem-solving adventures : a language-arts-based supplementary series for early childhood that focuses on spatial sense / Early childhood mathematics instruction : seeing the opportunities among the challenges / Early childhood collaborative : a professional development model to communicate and implement the standards / Professional development challenge in preschool mathematics / Mathematics guidelines for preschool