In this 2.MD.3 Second Grade Common Core Lesson, students estimate and then measure lengths using units of inches, feet, centimeters, and meters.

This estimate and count unit squares activity helps 2nd-3rd Grade students find area by covering shapes with paper tiles. A practice page and answer key are included.

Use this estimating measurement in inches worksheet to help 2nd graders read a true-size ruler, test a classmate's guess, and pick the closest estimate. An answer key is included for fast checking.