Grade 2: Chapter 9 – Length in Metric Units

Chapter Essential Question:What are some of the methods and tools that can be used to estimate and measure length in metric units?

Before
(Grade One) / Chapter NineStandards
Grade Two / After
(Grade Three)
Measure lengths indirectly and by iterating length units.
(1.MD.1, 1.MD.2) / Measurement and Data 1: Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.
  • I can use a concrete model to measure the lengths of objects in centimeters.
  • I can measure lengths of objects to the nearest centimeter using a centimeter ruler.
/ Solve problems involving measurement and estimation of intervals of time, liquid volumes, and masses of objects.
(3.MD.2)
Measurement and Data 3: Estimate lengths using units of inches, feet, centimeters, and meters.
  • I can statements estimate lengths of objects in centimeters by comparing them to known lengths.
  • I can estimate the lengths of objects in meters.

Measurement and Data 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.
  • I can solve problems involving adding and subtracting lengths by using the strategy draw a diagram.

Measurement and Data 5: Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same units, e.g., by using drawings (such as drawings of rulers) and equations with a symbol for the unknown number to represent the problem.
  • I can solve problems involving adding and subtracting lengths by using the strategy draw a diagram.

Measurement and Data 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.
  • I can measure the lengths of objects in both centimeters and meters to explore the inverse relationship between size and number of units.

Measurement and Data 4: Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit.
  • I can measure and then find the difference in the lengths of two object.

Each day the math block will begin with 15 minutes of Daily Math Review and Mental Math. The focus of DMR should be either prerequisite standard skills or previous chapter concepts that were not mastered. The focus of mental math should be based on the current Chapter’s skills and concepts. Adjust the amount of questions in DMR and MM to fit into the 15 minute time block.

Suggested Chapter Pacing

All lessons are paced for one day, unless otherwise indicated. Teachers may adjust to meet students’ needs.

Launching the Chapter / Pre-Assessment / Review Prerequisite Skills
Estimate It!:599I
Measure It!:599I / Show What You Know Assessment
Identify Tier 2 and Tier 3 Groups for Small Group Instruction.
Day Before Lesson 9.1 / Vocabulary Activity
Go Fish TE 602A / Vocabulary Builder
TE 601 - Identify students who will need further vocabulary support for Chapter 9. / Preview Chapter Centers
Introduce chapter games, activities, and literature students will be using during center time. / School – Home Letter
Read together and send home.
I Can Statement / Essential Question / Implementation Notes / Centers by Lesson / Teacher Notes
Lesson 9.1
MD.1 / I can use a concrete model to measure the lengths of objects in centimeters. / How do you use a centimeter model to measure the lengths of objects? / Base Ten Blocks / A: Batter Up! (Blue 17)
L: Nature Walk
G: How Long? / Click here to enter text.
9.1 Technology / Interactive Whiteboard Lesson / Interactive Student Edition (Engage) / Math on the Spot / Mega Math:
Shapes Ahoy: Made to Measure – Level D / Animated Math Model:
Measure with Centimeters
Lesson 9.2
MD.3 / I can estimate lengths of objects in centimeters by comparing them to known lengths. / How do you use known lengths to estimate unknown lengths? / Classroom objects, 10-centimeter strips of paper / A: Batter Up! (Blue 17)
L: Nature Walk
G: How Long? / Click here to enter text.
9.2 Technology / Interactive Whiteboard Lesson / Interactive Student Edition (Engage) / Math on the Spot / Mega Math:
Shapes Ahoy: Made to Measure – Level A
Shapes Ahoy: Made to Measure – Level E / Animated Math Model:
None
Lesson 9.3
MD.1 / I can measure lengths of objects to the nearest centimeter using a centimeter ruler. / How do you use a centimeter ruler to measure lengths? / Small Classroom Objects, Base-Ten Unit Cubes, Centimeter Rulers / L: A Trip to the Pond
G: How Long? / Click here to enter text.
9.3 Technology / Interactive Whiteboard Lesson / Interactive Student Edition (Engage) / Math on the Spot / Mega Math:
Shapes Ahoy: Made to Measure – Level H / Animated Math Model:
Centimeters
Lesson 9.4
MD.5+6 / I can solve problems involving adding and subtracting lengths by using the strategy draw a diagram. / How can drawing a diagram help when solving problems about lengths? / Optional Mid Chapter Checkpoint / L: A Trip to the Pond
G: How Long? / Click here to enter text.
9.4 Technology / Interactive Whiteboard Lesson / Interactive Student Edition (Engage) / Math on the Spot / Mega Math:
None / Animated Math Model:
None
Lesson 9.5
MD.2 / I can measure the lengths of objects in both centimeters and meters to explore the inverse relationship between size and number of units. / How is measuring in meters different than measuring in centimeters? / 1-Meter Pieces of Yarn, Sheets of Paper, Centimeter Rulers, Meter Sticks, Masking Tape / A: Batter Up! (Blue 17)
L: A Trip to the Pond
G: How Long? / Click here to enter text.
9.5 Technology / Interactive Whiteboard Lesson / Interactive Student Edition (Engage) / Math on the Spot / Mega Math:
Shapes Ahoy: Made to Measure – Level I / Animated Math Model:
Centimeters and Meter
I Can Statement / Essential Question / Implementation Notes / Centers by Lesson / Teacher Notes
Lesson 9.6
MD.3 / I can estimate the lengths of objects in meters. / How do you estimate the lengths of objects in meters? / Centimeter Rulers / A: Batter Up! (Blue 17)
L: A Trip to the Pond / Click here to enter text.
9.6 Technology / Interactive Whiteboard Lesson / Interactive Student Edition (Engage) / Math on the Spot / Mega Math:
Shapes Ahoy: Made to Measure – Level I / Animated Math Model:
Centimeters and Meter
Lesson 9.7
MD.4 / I can measure and then find the difference in the lengths of two objects. / How do you find the difference between the lengths of two objects? / Centimeter Rulers / A: Super Subs (Orange 17)
L: A Trip to the Pond
G: How Long? / Click here to enter text.
9.7 Technology / Interactive Whiteboard Lesson / Interactive Student Edition (Engage) / Math on the Spot / Mega Math:
Shapes Ahoy: Made to Measure – Level H / Animated Math Model:
Centimeter
Additional Resources for Chapter 9
Measurement and Data 1 / Measurement and Data 3 / Measurement and Data 6
More Than One Way / Estimate and Measure Inches
How long is an army ant (cm)?
Estimate with army ants (cm)?
100 Army Ants and More (meters)
Measurement and Data 5 / Measurement and Data 2 / Measurement and Data 4
Height and Length Problems / From Feet to Yards / How Long? How Tall?

Des Moines Public Schools 2014-2015 Math Curriculum Guides Page | 1

Grade 2 – Chapter 9