Table of Contents

Chapter 1 Describe and Compare Numbers
 1 Extend a Pattern
 2 Create a Pattern
 3 ProblemSolving Strategy: Look for a Pattern
 4 Numbers to 10
 5 Numbers 11 to 15
 6 Numbers 16 to 20
 7 ProblemSolving Investigation: Choose a Strategy
 8 Compare Numbers
 9 Order Numbers

Chapter 2 Develop Addition Concepts
 1 Addition Stories
 2 Modeling Addition
 3 Addition Sentences
 4 Adding Zero
 5 ProblemSolving Strategy: Write a Number Sentence
 6 Ways to Make 4, 5, and 6
 7 Ways to Make 7, 8, and 9
 8 Ways to Make 10, 11, and 12
 9 ProblemSolving Investigation: Choose a Strategy
 10 Vertical Addition

Chapter 3 Develop Subtraction Concepts
 1 Subtraction Stories
 2 Modeling Subtraction
 3 Subtraction Sentences
 4 Subtract Zero and All
 5 ProblemSolving Strategy: Draw a Picture
 6 Subtract from 4, 5, and 6
 7 Subtract from 7, 8, and 9
 8 ProblemSolving Investigation: Choose a Strategy
 9 Subtract from 10, 11, and 12
 10 Vertical Subtraction

Chapter 4 Organize and Use Data
 1 Sort and Classify
 2 Picture Graphs
 3 ProblemSolving Strategy: Make a Table
 4 Tally Charts
 5 Read a Bar Graph
 6 Make a Bar Graph
 7 ProblemSolving Investigation: Choose a Strategy
 8 Certain or Impossible

Chapter 5 Develop Addition Strategies
 1 Add in Any Order
 2 Count on 1, 2, or 3
 3 ProblemSolving Strategy: Act It Out
 4 Add 1, 2, or 3
 5 Use a Number Line to Add
 6 Doubles
 7 Doubles Plus 1
 8 ProblemSolving Investigation: Choose a Strategy

Chapter 6 Develop Subtraction Strategies
 1 Count Back 1, 2, or 3
 2 ProblemSolving Strategy: Write a Number Sentence
 3 Use a Number Line to Subtract
 4 ProblemSolving Investigation: Choose a Strategy
 5 Use Doubles to Subtract
 6 Relate Addition to Subtraction
 7 Fact Families

Chapter 7 Measure Time
 1 Ordering Events
 2 Time to the Hour
 3 Time to the Half Hour
 4 ProblemSolving Strategy: Make a Table
 5 Telling Time to the Hour and Half Hour
 6 Relate Time to Events
 7 ProblemSolving Investigation: Choose a Strategy

Chapter 8 Recognize Number Patterns
 1 Counting to 20
 2 Counting by Tens
 3 ProblemSolving Strategy: Look for a Pattern
 4 Hundred Chart
 5 Estimating with Groups of Tens
 6 ProblemSolving Investigation: Choose a Strategy
 7 Skip Counting by 2s, 5s, and 10s
 8 Skip Counting on a Hundred Chart
 9 Even and Odd