



Dimensions Math^{®} PreK5 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.
Textbook lessons begin with a task that allows students to apply their previous knowledge and learn through discussion. Once students have mastered a concept with the use of concrete and pictorial aids, they are ready to take on more abstract mathematical problem sets. They reach fluency by collecting various strategies along the way and applying them to new problems. Word problems give students a sense of math in realworld contexts.
Workbooks offer independent practice that follows a careful progression of exercise variation. Each textbook lesson includes a corresponding workbook exercise that starts with pictorial representation and progresses to more challenging abstract problems. Workbooks for PreK2 are perforated.
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.
Textbooks and Workbooks do not include answer keys. Answers are in Teacher's Guides.
Dimensions Math^{®} Teacher's Guide 2B
Chapter 8: Mental Calculation
Teaching Notes
Chapter Opener
Lesson 1: Adding Ones Mentally
Lesson 2: Adding Tens Mentally
Lesson 3: Making 100
Lesson 4: Adding 97, 98, or 99
Lesson 5: Practice A
Lesson 6: Subtracting Ones Mentally
Lesson 7: Subtracting Tens Mentally
Lesson 8: Subtracting 97, 98, or 99
Lesson 9: Practice B
Lesson 10: Practice C
Workbook Solutions
Chapter 9: Multiplication and Division of 3 and 4
Teaching Notes
Chapter Opener
Lesson 1: The Multiplication Table of 3
Lesson 2: Multiplication Facts of 3
Lesson 3: Dividing by 3
Lesson 4: Practice A
Lesson 5: The Multiplication Table of 4
Lesson 6: Multiplication Facts of 4
Lesson 7: Dividing by 4
Lesson 8: Practice B
Lesson 9: Practice C
Workbook Solutions
Chapter 10: Money
Teaching Notes
Chapter Opener
Lesson 1: Making $1
Lesson 2: Dollars and Cents
Lesson 3: Making Change
Lesson 4: Comparing Money
Lesson 5: Practice A
Lesson 6: Adding Money
Lesson 7: Subtracting Money
Lesson 8: Practice B
Workbook Solutions
Chapter 11: Fractions
Teaching Notes
Chapter Opener
Lesson 1: Halves and Fourths
Lesson 2: Writing Unit Fractions
Lesson 3: Writing Fractions
Lesson 4: Fractions that Make 1 Whole
Lesson 5: Comparing and Ordering Fractions
Lesson 6: Practice
Review 3
Workbook Solutions
Chapter 12: Time
Teaching Notes
Chapter Opener
Lesson 1: Telling Time
Lesson 2: Time Intervals
Lesson 3: A.M. and P.M.
Lesson 4: Practice
Workbook Solutions
Chapter 13: Capacity
Teaching Notes
Chapter Opener
Lesson 1: Comparing Capacity
Lesson 2: Units of Capacity
Lesson 3: Practice
Workbook Solutions
Chapter 14: Graphs
Teaching Notes
Chapter Opener
Lesson 1: Picture Graphs
Lesson 2: Bar Graphs
Lesson 3: Practice
Workbook Solutions
Chapter 15: Shapes
Teaching Notes
Chapter Opener
Lesson 1: Straight and Curved Sides
Lesson 2: Polygons
Lesson 3: Semicircles and Quartercircles
Lesson 4: Patterns
Lesson 5: Solid Shapes
Lesson 6: Practice
Review 4
Review 5
Workbook Solutions
Blackline Masters for 2B













Our recommendation:
Dimensions Math^{® } 1A5B textbooks and workbooks are suitable for both classroom and home settings.
Students should use textbooks and workbooks together. The nonconsumable textbooks provide activities, learning tasks, and some practice. The consumable workbooks provide additional practice for consolidation or homework, with room to work out the problems. In a home setting, parent or teacher involvement is essential for success as interaction is a key element to learning concepts. This series should be used with teacher’s guides, which provide background information, concrete introductions to topics, and additional activities.








