Standard

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.

Student Language:

• "I can tell the length of an object using whole numbers."
• "I can show that I understand how to measure something by using a smaller object as a measurement tool."

Explanation

About the Math, Learning Targets, and Rigor

Resources

Videos

• Khan Academy
  • Scroll to 1.MD.2, click on skill, find videos on left side of each skill

Extra Practice

• North Carolina Tasks
• Illustrative Math Tasks
• Howard County Tasks
  • Click on 1st grade at bottom, then 1.MD.2
• Common Core Sheets