Excerpt 1: Overview of Geometric Measurement in Grades K-5 (Pages 2-5)

Description: One of a series of documents describing the progression of a topic across several grade levels, informed both by research on children's development and by the structure of mathematics. Geometric measurement connects the two most critical domains of early mathematics, geometry and number, with each providing conceptual support to the other. Measurement is the process of assigning a number to a magnitude of some attribute shared by some class of objects, such as length, relative to a unit.