Contents
Section A: Add and Subtract within 1,000 without Composition or Decomposition
Lesson 1: Compare, Count on, and Count Back
Warm-up: Number Talk: Count Back
1.1: Notice the Difference
1.2: What’s the Big Difference?
Lesson 2: Add and Subtract with Tens and Hundreds
Warm-up: Number Talk: Add Multiples of 10
2.1: Show It with Base-ten Blocks
2.2: How Many with Base-ten Blocks and Equations
Lesson 3: Count on or Count Back to Subtract
Warm-up: Number Talk: Tens and Hundreds
3.1: Jump Back, Back, Back
3.2: Who Spilled Paint?
Lesson 4: Add and Subtract Three-digit Numbers in Different Ways
Warm-up: Number Talk: Count Back by Place
4.1: Zero Tens and Zero Ones
4.2: Add or Subtract with Expanded Form
Section A Summary
Lesson 5: Center Day 1
Warm-up: How Many Do You See: Hundreds, Tens, and Ones
5.2: Centers: Choice Time
Section A Practice Problems
Section B: Add within 1,000 using Place Value Strategies
Lesson 6: Use a Ten to Add Within 1,000
Warm-up: Number Talk: Numbers that Make 10
6.1: Add Two-digit and Three-digit Numbers
6.2: Card Sort: Perfect Ten
Lesson 7: Compose a Larger Unit
Warm-up: How Many Do You See: Are They the Same?
7.1: Compose a Ten or a Hundred
7.2: Walk About and Add
Lesson 8: Compose Tens and Hundreds to Add
Warm-up: How Many Do You See: Too Many Tens
8.1: Compare the Sums
8.2: Different Ways to Show Your Thinking
Lesson 9: Add Three-digit Numbers
Warm-up: Number Talk: Ten and Some More
9.1: How Did You Add Three-digit Numbers?
9.2: Analyze and Add
Lesson 10: Add within 1,000
Warm-up: Number Talk: Use Sums to Find Sums
10.1: Card Sort: Three-digit Sums
10.2: Find the Unknown Value
Section B Summary
Lesson 11: Center Day 2
Warm-up: Number Talk: Make 100
11.2: Introduce Five in a Row, Add Within 1,000 with Composing
Section B Practice Problems
Section C: Subtract within 1,000 using Place Value Strategies
Lesson 12: Decompose to Subtract
Warm-up: What Do You Know About 354?
12.1: Subtract from 354
12.2: Decompose with Base-ten Blocks
Lesson 13: Decompose Tens or Hundreds
Warm-up: Which One Doesn’t Belong: Blocks and Blocks
13.1: Subtract with Base-ten Diagrams
13.2: Decompose a Ten or Hundred
Lesson 14: Think Before You Subtract
Warm-up: Which One Doesn’t Belong: Blocks and Blocks and Blocks
14.1: Agree to Disagree
14.2: Sort and Subtract
Lesson 15: Decompose a Ten and a Hundred to Subtract
15.1: Elena’s Thinking
15.2: Walk About and Subtract
Lesson 16: Subtract Within 1,000
Warm-up: True or False: Equations Based on Place Value
16.1: Jada’s Thinking
16.2: Find It Your Way
Section C Summary
Lesson 17: Center Day 3
Warm-up: Number Talk: Simplify It
17.2: More Target Numbers and Choice Time
Lesson 18: Paint Splattered Bar Graph
Warm-up: Number Talk: Subtract within 1,000
18.1: Student Population
18.2: Asked and Answered
Section C Practice Problems
Glossary
Attributions
Notes
Notes
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