Standard

Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit.

Student language:

• "I can compare the length of two different objects."

Explanation

About the Math, Learning Targets, and Rigor

This standard calls for students to determine the difference in length between two objects.

Students should:

1. choose actual objects
2. identify appropriate tools and units
3. measure both objects
4. determine the differences in lengths using the same unit of measure.

2nd graders should be familiar enough with inches, feet, yards, centimeters, and meters to be able to compare the differences in lengths of two objects.

Students should use comparative phrases to describe the difference between two objects, such as:

• “It is longer by 2 inches."
• “It is shorter by 5 centimeters.”

Resources

Videos

• Khan Academy
  • scroll to find 2.MD.4, click on a skill, watch videos on left side in each skill
• Learn Zillion

EngageNY Lessons

Extra Practice

• North Carolina Tasks
• Illustrative Math Tasks
• Howard County Tasks
  • Click on 2nd grade at bottom, then 2.MD.4
• Common Core Sheets

Released Assessment Questions

2.MD.4 Student Example

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