NC.2.MD.4

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

Step 1: Lesson Standards & Learning Goals

Unpacking Clarification

In this standard, students choose two objects to measure, identify an appropriate tool and unit, measure both objects, and then determine the differences between the two lengths. Students should make comparative statements to describe differences between two objects such as “This object is shorter by 2 inches” or “It is longer by 4 centimeters.”

This standard intersects NC.2.OA.1 with the word problem type Compare-Difference Unknown which was introduced in First Grade with numbers 20 or less. In this standard, numbers should be limited to 99 or less.

Sample Essential Questions

How do you compare the length of different objects?
How can we use measurement tools to accurately measure and compare lengths?
How do we communicate our understanding of measurements effectively?

Vocabulary

centimeter (cm)
difference
foot (ft)
inch (in)
longer/shorter
measure
meter (m)
measure
yard (yd)

Students will be able to...

Measure to determine how much longer one object is than another, expressing the length difference by a standard length unit.
- - Choose two objects to measure.
  - Identify an appropriate tool and unit.
  - Measure both objects.
  - Determine the differences between the two lengths.
Express the length difference of the two objects with a common unit.
Use appropriate mathematical terminology when discussing or writing about measurement.

Students will know...

The length of two objects can be compared by subtracting to find the differences.
The two objects being compared should be measured using the same unit of measure.
Choosing the appropriate tool when measuring various objects is important in finding accurate measures.

Step 2: Assessment

Mastery Connect

NC.2.MD.4 - CO - Howell - Jan. 18, 2023

NC.2 - Cluster 6 Review - CO - Howell - Feb. 17, 2023

Tools 4 NC Teachers

CFA for Cluster 6

Measuring and Comparing Lengths - MD4

NCDPI Assessments

- Grade 2 Math Assessment Practice Prompts
  - Measurement & Data

Step 3: Lesson Instructions

Possible Activating Strategies

Exploration or Experience
- Students compare lengths of objects without measuring. Then, choose a tool to measure each and find the difference.

Video Clip

Read Aloud

Teacher Resources

Tools 4 NC Teachers
- Cluster 6 Lessons
Math Expressions - (Barnes and Hearne) - Standards Alignment
Motivation Math
Think Up! Math
Khan Academy - 2nd Grade Math
Eureka Math/Engage NY Free Resources
- Embarc Online (Eureka Math) -
  - - G2 M2 Topic C: Measure and Compare Lengths Using Different Length Units
    - G2 M7 Topic D: Measuring and Estimating Length Using Customary and Metric Units
- Standards Alignment
- Zearn Math - Online Support Practice for Eureka Math (Requires free account)
North Carolina Collaborative for Mathematics Learning - Grade 2 Instructional Framework
NCDPI Resources
- Math Games Grade 2
- Grade 2 Math Assessment Practice Prompts
- Grade 2 Released Summative Assessments

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