# Contents

1. Section A: Multiplicative Comparison
1. Warm-up: Notice and Wonder: Compare Cubes
2. 1.1: Twice as Many
3. 1.2: Times as Many
4. 1.3: Make n Times as Many
1. Warm-up: How Many Do You See: Times as Many
2. 2.1: Represent “Times as Many”
3. 2.2: Diagrams to Solve Multiplicative Comparison Problems
1. Warm-up: Number Talk: Find the Unknown Factor
2. 3.1: A Book Drive
3. 3.2: Represent a Missing Amount
1. Warm-up: Notice and Wonder: Too Many Times More?
2. 4.1: A New Kind of Diagram
1. Warm-up: Which One Doesn’t Belong: Something's Missing
2. 5.1: The Book Fair
3. 5.2: More Book Fair Purchases
1. 6.1: Ten Times as Many
2. 6.2: What Remains the Same?
3. Section A Summary
4. Section A Practice Problems
2. Section B: Measurement Conversion
1. Warm-up: Notice and Wonder: Big Bug, Little Bug
2. 7.1: How Long is One Meter?
3. 7.2: In and Around the School
1. Warm-up: Number Talk: Times Hundreds and Thousands
2. 8.1: How Long is One Kilometer?
3. 8.2: Meters and Kilometers
1. Warm-up: Which One Doesn’t Belong: Meter, Meter on the Page
2. 9.1: A Whole Lot of Paper Clips
3. 9.2: Liters and Milliliters
1. Warm-up: Notice and Wonder: Distances Traveled
2. 10.1: Long Hikes, Short Hikes
3. 10.2: Big Bottles, Little Bottles
1. Warm-up: Notice and Wonder: A Recipe
2. 11.1: Pounds and Ounces
3. 11.2: Party Prep
1. Warm-up: What Do You Know about 1 Hour?
2. 12.1: Mai’s School Day
3. 12.2: Precious Minutes and Seconds
1. Warm-up: True or False: Some Number Times a Fraction
2. 13.1: Info Gap: Noah’s School Day (Part 1)
3. 13.2: Info Gap: Noah’s School Day (Part 2)
4. 13.3: Shopping List
5. Section B Summary
6. Section B Practice Problems
3. Section C: Let’s Put it to Work
1. Warm-up: Number Talk: Lots of Thousands
2. 14.1: Milk and Mango Lassi
3. 14.2: Clay for Art Class
1. Warm-up: Which One Doesn’t Belong: Measurements
2. 15.1: Frisbee Throws
3. 15.2: Stone Towers
1. Warm-up: Number Talk: Two and Four Times a Fraction
2. 16.1: Pipe-cleaner Perimeters
3. 16.2: Perimeter Predictions
4. 16.3: Gridded Rectangles
1. Warm-up: True or False: Fractions and Whole Numbers
2. 17.1: Along the Walls in Tiny Steps
3. 17.2: Missing Measurements
4. Section C Summary
1. Warm-up: Notice and Wonder: Animal Facts
2. 18.1: Two Truths and a Lie
3. 18.2: Gallery Walk: Two Truths and a Lie
4. Section C Practice Problems
4. Glossary