NC.2.MD.1

Students build upon their non-standard measurement experiences in first grade by measuring in standard units (inches, feet, centimeters, and meters). Students are expected to demonstrate the concept of iteration (repeatedly using a tool) to determine the length of an object using standard units. Using both customary (inches and feet) and metric (centimeters and meters) units, students select an attribute to be measured (e.g., length of classroom), choose an appropriate unit of measurement (e.g., yardstick), and determine the number of units (e.g., yards). Students will understand that larger units (e.g., yard) can be partitioned into equivalent units (e.g., feet or inches). Students should connect their understanding of non-standard units from first grade to standard units in second grade as they measure the length, width, or height of an object and determine how many of a specific unit it takes to measure the specific dimension of the object.