Customary Measurement, Shapes, and Telling Time

Lesson 2

Math

Unit 6

2nd Grade

Lesson 2 of 15

Objective


Measure lengths using an inch ruler.

Student-Facing

I can measure using an inch ruler.

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.

Foundational Standards

  • 1.MD.A.2

Criteria for Success


  1. Using a standard inch ruler, measure objects to the nearest whole inch and draw a line to the nearest whole inch. 
  2. Understand that 12 inches is the same as another unit of measure called a foot
  3. Measure objects to the nearest foot.

Tips for Teachers


As students are getting used to using standard rulers for measuring and drawing lines measuring specific lengths, if you have access to whole-inch rulers, that will be suitable for student practice. If you only have fractional rulers available, be sure to model measuring to the nearest whole inch.

Lesson Materials

  • Ruler (1 per student) — ensure the ruler has inches
  • Yardstick (1 per group of 4 students) — with painter's tape or masking tape, mark off 1 foot, 2 feet, and 3 feet
  • Square inch tiles (40 per group of 4 students)
  • Painter's tape — measure a set of strips that are 2 feet, 3 feet, 28 inches, and 34 inches long
  • Optional: Measuring kit — include 6–7 items less than 12 inches long that can be measured to the nearest whole inch

Warm Up

5-10 minutes


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Anchor Tasks

15-25 minutes


Problem 1

Measure the following items using an inch ruler.

a.   

b.   

c.   

d.   

e.   Draw a 2 inch line.

Purpose

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Problem 2

a.   Brainstorm items in your classroom that you could measure using an inch ruler. 

b.   Measure in inches and record the measurements below.

Item Length
   
   
   
   
   
   

Purpose

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Problem 3

a.   Raymond measured the height of one of the shelves in the library and found that it measured 12 inches. 

12 inches is the same length as another unit called a foot

Brainstorm some things in your school that are about a foot in length or height. Then select one to measure in inches to confirm.

  1. _______________________
  2. _______________________
  3. _______________________
  4. _______________________
  5. _______________________

b.   Using a yardstick, measure each of the lines to the nearest foot. Then measure them in inches using inch rulers or inch tiles.

Object Measurement with Yardstick Measurement with Inch Ruler or Inch Tiles
Line 1    
Line 2    
Line 3    
Line 4    

Purpose

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Set Up

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Problem Set

15-20 minutes


Target Task

5-10 minutes


a.   Use an inch ruler to draw a line that is 6 inches long.

b.   Measure the following line and record its length in inches.

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 lengths using customary units.

Lesson 3
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Lesson Map

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

Topic A: Customary Measurement

Topic B: Shapes, Their Attributes, and Equal Shares

Topic C: Telling Time

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