Curriculum  /  Math  /  2nd Grade  /  Unit 3: Metric Measurement  /  Lesson 2

Metric Measurement

Lesson 2

Math

Unit 3

2nd Grade

Lesson 2 of 13

Objective

Create and use a centimeter ruler to measure.

Student-Facing

I can create a centimeter ruler and use it to measure.

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.B.6 — Represent whole numbers as lengths from 0 on a number line diagram with equally spaced points corresponding to the numbers 0, 1, 2, …, and represent whole-number sums and differences within 100 on a number line diagram.

Foundational Standards

  • 1.MD.A.1

Criteria for Success

  1. Understand that the length of a side of a centimeter cube is the same length as a centimeter. 
  2. Use a centimeter cube to mark equal spaces to make a measuring tool. 
  3. Understand that a centimeter ruler can be used to measure objects similarly to using centimeter cubes.

Tips for Teachers

Lesson Materials

  • Shoe Print — teacher only
  • Optional: Masking tape — teacher only
  • Centimeter cubes (20 per student or student pair if students are working in pairs)
  • Cardstock (1 strip per student) — cut into 2 inch wide strips for rulers
  • Ruler — teacher only, ensure the ruler has centimeters

Warm Up

5-10 minutes

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Anchor Tasks

15-25 minutes

Problem 1

Imagine you want to measure the width of your class rug but you only have your shoe as a measuring object. How could you measure the width of the rug? Explain your thinking.

Purpose

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Set Up

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Problem 2

Using a centimeter cube, create a ruler to use for measurement. Be sure to label your tick marks. 

Purpose

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Set Up

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Problem 3

Measure the length of each side of the triangle using the ruler you created.

a.   Side 1: _____cm

b.   Side 2: _____cm

c.   Side 3: _____cm

Purpose

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Problem 4

Measure the following images using the centimeter ruler you created.

a.   

b.   

c.   

d.   

Purpose

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Problem Set

15-20 minutes

Target Task

5-10 minutes

Problem 1

Finish labeling this centimeter ruler.  

Student Response

Problem 2

Using the ruler you made in class, measure the following. Be sure to include your units. 

a.   

b.   

c.   

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

Estimate and measure with centimeter rulers.

Lesson 3
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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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