Metric Measurement

Lesson 1

Math

Unit 3

2nd Grade

Lesson 1 of 13

Objective


Measure with equal-sized units.

Student-Facing

I can measure objects with centimeter cubes and paper clips.

Common Core Standards


Core Standards

  • 2.MD.A.1 — Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.
  • 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.

Foundational Standards

  • 1.MD.A.1

Criteria for Success


  1. Use standardized objects to measure by lining objects up end to end from the start to the end of an object. 
  2. Understand that the size of the object used to measure will correlate to the relative length of that item used to measure; the longer the unit, the fewer the units it takes to span the length and the shorter the unit, the more units it takes to span the length.
  3. When measuring make sure that units being used are equal sized units. 
  4. Items that are used to measure are placed end to end with no gaps. 
  5. Know that an item's measurement is taken from the starting point of the object to the end. 
  6. Know that a centimeter is a standardized unit of measure used to measure.

Tips for Teachers


Lesson Materials

  • Centimeter cubes (20 per student or student pair if students are working in pairs)
  • Paper clips (20 per student or student pair) — these should measure about 3 cm

Warm Up

5-10 minutes


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Anchor Tasks

15-25 minutes


Problem 1

Three students used paper clips to measure the following rectangle. Paula says that the rectangle was 6 paper clips long, Adam says it was 5 paper clips long, and Karla says it was 8 paper clips long. Who do you agree with and why?

Purpose

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Problem 2

Measure the length of the following images using centimeter cubes.

a.   

b.   

c.   

d.   

Purpose

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Problem 3

Find five items in your desk that you can measure.

a.   Measure the length of each item first using centimeter cubes, and then a second time using large paper clips. Record your measurements in the table. 

Item Centimeter Cubes Large Paper Clips
     
     
     
     
     

b.   Looking at the measurements of each item, why are there more centimeter cubes than paper clips?

Purpose

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Problem Set

15-20 minutes


Target Task

5-10 minutes


Measure the length of the rectangle, first with centimeter cubes and then with large paper clips.

The rectangle  is _____ centimeter cubes long. 

The rectangle is _____ paper clips long.

Student Response

Additional Practice


Daily Word Problems, Warm Ups, and Center Activities are aligned to the content of the unit but not necessarily to the lesson objective, therefore feel free to use them anytime during your school day.

Word Problems and Fluency Activities

Next

Create and use a centimeter ruler to measure.

Lesson 2
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Lesson Map

A7CB09C2-D12F-4F55-80DB-37298FF0A765

Topic A: Metric Measurement

Topic B: Foundations of Number Lines

Topic C: Line Plots and Data

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