# Singapore Math - Dimensions Math Textbook 1B

**Dimensions Math ^{®} Textbook 1B**Chapter 10: Length

Lesson 1: Comparing Lengths Directly

Lesson 2: Comparing Lengths Indirectly

Lesson 3: Comparing Lengths with Units

Lesson 4: Practice

Chapter 11: Comparing

Lesson 1: Subtraction as Comparison

Lesson 2: Making Comparison Subtraction Stories

Lesson 3: Picture Graphs

Lesson 4: Practice

Chapter 12: Numbers to 40

Lesson 1: Numbers to 40

Lesson 2: Tens and Ones

Lesson 3: Counting by Tens and Ones

Lesson 4: Comparing

Lesson 5: Practice

Chapter 13: Addition and Subtraction Within 40

Lesson 1: Add Ones

Lesson 2: Subtract Ones

Lesson 3: Make the Next Ten

Lesson 4: Use Addition Facts

Lesson 5: Subtract from Tens

Lesson 6: Use Subtraction Facts

Lesson 7: Add Three Numbers

Lesson 8: Practice

Chapter 14: Grouping and Sharing

Lesson 1: Adding Equal Groups

Lesson 2: Sharing

Lesson 3: Grouping

Lesson 4: Practice

Chapter 15: Fractions

Lesson 1: Halves

Lesson 2: Fourths

Lesson 3: Practice**Review 3**

Chapter 16: Numbers to 100

Lesson 1: Numbers to 100

Lesson 2: Tens and Ones

Lesson 3: Count by Ones or Tens

Lesson 4: Compare Numbers to 100

Lesson 5: Practice

Chapter 17: Addition and Subtraction Within 100

Lesson 1: Add Ones — Part 1

Lesson 2: Add Tens

Lesson 3: Add Ones — Part 2

Lesson 4: Add Tens and Ones — Part 1

Lesson 5: Add Tens and Ones — Part 2

Lesson 6: Subtract Ones — Part 1

Lesson 7: Subtract from Tens

Lesson 8: Subtract Ones — Part 2

Lesson 9: Subtract Tens

Lesson 10: Subtract Tens and Ones — Part 1

Lesson 11: Subtract Tens and Ones — Part 2

Lesson 12: Practice

Chapter 18: Time

Lesson 1: Telling Time to the Hour

Lesson 2: Telling Time to the Half Hour

Lesson 3: Telling Time to the 5 Minutes

Lesson 4: Practice

Chapter 19: Money

Lesson 1: Coins

Lesson 2: Counting Money

Lesson 3: Bills

Lesson 4: Shopping

Lesson 5: Practice**Review 4**

Click here to view samples of Dimensions Math^{®} Textbook 1B.

**Dimensions Math ^{®}**

**PreK-5 series**features the progression, rigor, and pacing that define Singapore math. Throughout the series, five characters offer students suggestions on how to think about problems. They remind students of strategies they’ve learned and point out important information that encourages them to come up with their own solutions.

Teacher’s Guides include lesson plans, mathematical background, games, helpful suggestions, and comprehensive resources for daily lessons. Lessons are laid out clearly and activities are designed for the whole class, small groups, and extension.