This review covers inches, feet, centimeters, and yards. It reviews using a ruler and simple conversions from yards to feet.
Standards:
2.MD.A.2 = Measure the length of an object twice, using length units of different lengths for the two measurements; describe how the two measurements relate to the size of the unit chosen.
2.MD.A.3 = Estimate lengths using units of inches, feet, centimeters, and meters.