- Section A: Metric Measurement
- Warm-up: What Do You Know About Measuring?
- 1.1: Priya’s Pet
- 1.2: Use a Standard Unit

- Warm-up: Notice and Wonder: Centimeters
- 2.1: Length in Centimeters
- 2.2: Measure with 10-centimeter Tools

- Warm-up: Number Talk: Subtract Two Digits
- 3.1: Create a Ruler
- 3.2: Measure and Compare Lengths

- Warm-up: Which One Doesn’t Belong: Length
- 4.1: Estimate Length in Centimeters
- 4.2: Measure and Compare

- 5.1: Reptiles to Measure
- 5.2: Measure with a Meter Stick

- Warm-up: Number Talk: Fives and Tens
- 6.1: Whose Pet is Longer?
- 6.2: Guess My Reptiles
- Section A Summary

- Warm-up: Number Talk: Subtract from 37
- 7.2: Centers: Choice Time
- Section A Practice Problems

- Section B: Customary Measurement
- Warm-up: Notice and Wonder: Inches and Centimeters
- 8.1: What is an Inch?
- 8.2: Measure the Sides of Shapes

- Warm-up: Estimation Exploration: Small Fry, Big Fish
- 9.1: Measure the Length of Fish
- 9.2: Inches or Feet?

- Warm-up: True or False: Constant Difference
- 10.1: The Notebook Problem
- 10.2: A Desktop to Measure

- Warm-up: Notice and Wonder: Take From
- 11.1: Saree Silk Ribbon Necklaces
- 11.2: Saree Silk Ribbon Projects

- Warm-up: True or False: Place Value Comparisons
- 12.1: Share Ribbon with Friends
- 12.2: Friendship Bracelets and Gifts
- Section B Summary

- Warm-up: Number Talk: Use Ten to Add
- 13.2: Centers: Introduce Number Puzzles, Within 100 with Composing
- Section B Practice Problems

- Section C: Line Plots
- Warm-up: Notice and Wonder: “Handy” Graphs
- 14.1: Measure Our Hand Spans
- 14.2: Interpret Our Numerical Data

- Warm-up: Number Talk: Subtraction within 50
- 15.1: Measure and Plot Pencil Lengths
- 15.2: Plot Pencil Lengths

- Warm-up: Number Talk: Addition within 50
- 16.1: The Plant Project
- 16.2: Interpret Measurement Data on a Line Plot
- Section C Summary

- Warm-up: Number Talk: Subtract from a Multiple of 10
- 17.2: Centers: Choice Time

- Warm-up: Number Talk: Threes and Fives
- 18.1: Make a Yardstick
- 18.2: Compare Yardsticks
- 18.3: Measure Your Arms
- Section C Practice Problems

- Glossary
- Attributions
- Notes
- Notes