2.MD.4:
Measurement And Data
Measure And Estimate Lengths In Standard Units.
Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit.
2.MD.1:
Measurement And Data
Measure And Estimate Lengths In Standard Units.
Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.
1.MD.2:
Measurement And Data
Measure Lengths Indirectly And By Iterating Length Units.
Express the length of an object as a whole number of length units, by laying multiple copies of a shorter object (the length unit) end to end; understand that the length measurement of an object is the number of same-size length units that span it with no gaps or overlaps. Limit to contexts where the object being measured is spanned by a whole number of length units with no gaps or overlaps.
