Math in Focus, Primary Mathematics and Dimensions Math are three Singapore Mathematics curricula used in schools and homeschooling families in the United States. In this post, we review these three different curricula for Grades 1 to 5.

# Math in Focus Vs Primary Mathematics Vs Dimensions Math

**Math in Focus**

*Math in Focus (MIF) *is the U.S. version of Singapore’s mathematics program *My Pals are Here!* Math in Focus is distributed in the U.S. through Houghton Mifflin Harcourt.

The Math in Focus curriculum covers Grades K to 8. Math in Focus offers comprehensive material to support schools and homeschool students. Math in Focus offers material and resources to support differentiated learning. Math in Focus is also available in Spanish.

Math in Focus has come up with a revised version for 2020. In the latest revision, *Math in Focus* © 2020, is said to be the program’s most extensive revision since its 2009 release.

The latest version can be purchased from the publisher’s website. Printed material is not yet widely available from other online retailers for the 2020 edition.

In summary, the resources available for Math in Focus are:

- Math in Focus: Singapore Math Teacher’s Guide to Transition.
- Math in Focus Textbooks (A & B)
- Math in Focus Workbooks (A & B)
- Math in Focus Teacher Guides (A & B)
- Math in Focus Assessments
- Math in Focus Reteach
- Math in Focus Enrichment
- Math in Focus Extra Practice/ Math in Focus Homework and Extra Practice
- Math in Focus Fact Fluency
- Math in Focus PARCC Test Preparation Teacher Edition
- Math in Focus Virtual Manipulatives CD
- Math in Focus CD ROM – For homeschool families, you might be able to find this on eBay or Amazon for a reasonable price, and in it, you will find Assessments, Reteach, Extra Practice, and Enrichment material.
- For schools, Houghton Mifflin Harcourt offers online resources, interactive whiteboard lessons, classroom manipulative kits, posters, and school-to-home connections.

#### Math in Focus Homeschool

In addition to printed material, the Math in Focus curriculum provides online resources for homeschoolers.

Students can sign up for a preview of the latest 2020 edition on the publisher’s website.

The cost of adopting Math in Focus as your homeschool curriculum would vary according to the materials you would get. Math in Focus provides the most resources available for homeschoolers as compared to the other two curricula. The teacher’s guide compared to the other two curricula is the most expensive. The prices for the textbooks and workbooks would vary depending on the edition. Parents can also find good bargains for second-hand material on eBay or Amazon. Buying in bundles can also result in savings.

The cost of 2 teacher’s guides (A & B), 2 textbooks (A & B), and 2 workbooks (A & B) could cost approximately $250 to $300 for editions prior to 2020.

**Primary Mathematics**

There are three editions to Primary Mathematics to serve the diverse needs of the students and schools in the United States. Primary Mathematics was adapted to the U.S. market by Singapore Math, Inc.

#### Primary Mathematics U.S. Edition (Grades 1 – 6)

Primary Mathematics U.S. edition was modeled after the original program used in Singapore years ago, but with U.S. measurements and currency.

In summary, the resources available for Primary Mathematics U.S. Edition Grades 1 to 6 are:

- Primary Mathematics U.S. Edition Textbooks (A & B)
- Primary Mathematics U.S. Edition Workbooks (A & B)
- Primary Mathematics U.S. Edition Teacher’s Guides (A & B)
- Primary Mathematics U.S. Edition Home Instructor Guides (A & B)
- Primary Mathematics U.S. Edition Extra Practice (A & B)

#### Primary Mathematics Standards Edition (Grades 1 – 6)

The Primary Mathematics Standards edition was written to meet the 2006 Mathematics Contents Standards for California Public School issued prior to the Common Core State Standards.

In summary, the resources available for Primary Mathematics U.S. Edition Grades 1 to 6 are:

- Primary Mathematics Standards Edition Textbooks (A & B)
- Primary Mathematics Standards Edition Workbooks (A & B)
- Primary Mathematics Standards Edition Teacher’s Guides (A & B)
- Primary Mathematics Standards Edition Home Instructor Guides (A & B)
- Primary Mathematics Standards Edition Extra Practice (A & B)
- Primary Mathematics Standards Edition Tests (A & B)

#### Primary Mathematics Common Core Edition (Grades 1 – 5)

The Primary Mathematics Common Core edition was written to align with Common Core State Standards.

In summary, the resources available for Primary Mathematics U.S. Edition Grades 1 to 5 are:

- Primary Mathematics Common Core Textbooks (A & B)
- Primary Mathematics Common Core Workbooks (A & B)
- Primary Mathematics Common Core Teacher’s Guides (A & B)
- Primary Mathematics Common Core Tests (A & B)
- Primary Mathematics Common Core Extra Practice (A & B)
- Primary Mathematics Common Core Challenging Word Problems

#### Primary Mathematics Homeschool

Primary Mathematics is pretty popular with homeschoolers since it was the first Singapore Math curriculum available for the U.S. market. A home instructor’s guide is available for Primary Mathematics to help parents implement the curriculum.

The cost of implementation is pretty reasonable. The cost of 2 textbooks (A & B), 2 workbooks (A & B), and 2 instructor’s/ teacher’s guide (A & B) would cost approximately $100 to $200. Costs would depend on the edition chosen.

**Dimensions Math**

Dimensions Math is published by Singapore Math Inc. and was designed to cater to the needs of U.S. teachers and students and said to be a sequel to Primary Mathematics. The Dimensions Math program explains concepts in a new format as compared to Primary Mathematics. **The Dimensions Math curriculum covers grades PK to 8.**

In summary, the resources available for Dimensions Math are:

- Dimensions Math Textbook (A & B)
- Dimensions Math Workbook (A & B)
- Dimensions Math Teacher’s Guide (A & B)
- Dimensions Math Tests (A & B)

#### Dimensions Math Homeschool

Dimensions Math is the newest publication compared to Math in Focus and Primary Mathematics. The cost of implementation is very reasonable. The cost of 2 textbooks (A & B), 2 workbooks (A & B), and 2 teacher’s guides (A & B) cost approximately $100.

**Chapters and Sequence Comparison**

Below are the chapters covered and the sequence of chapters. The different curricula arrange and title their topics differently. For more detailed information on the details of what is covered in each chapter, refer to the individual curriculum material.

### Singapore Math Grade 1

## Singapore Mathematics Curriculum Comparison Grade 1

wdt_ID | Math in Focus | Math in Focus 2020 | Primary Mathematics US Edition | Primary Mathematics Standards Edition | Primary Mathematics Common Core Edition | Dimensions Math |
---|---|---|---|---|---|---|

1 | Chapter 1: Numbers to 10 (1A) | Chapter 1: Numbers to 10 | Chapter 1: Numbers 0 to 10 (1A) | Chapter 1: Numbers 0 to 10 (1A) | Chapter 1: Numbers 0 to 10 (1A) | Chapter 1: Numbers to 10 (1A) |

2 | Chapter 2: Number Bonds. | Chapter 2: Addition and Subtraction Within 10 | Chapter 2: Number Bonds | Chapter 2: Number Bonds | Chapter 2: Number Bonds | Chapter 2: Number Bonds |

3 | Chapter 3: Addition Facts to 10 | Chapter 3: Shapes and Patterns | Chapter 3: Addition | Chapter 3: Addition | Chapter 3: Addition Within 10 | Chapter 3: Addition |

4 | Chapter 4: Subtraction Facts to 10 | Chapter 4: Numbers to 20 | Chapter 4: Subtraction | Chapter 4: Subtraction | Chapter 4: Subtraction Within 10 | Chapter 4: Subtraction |

5 | Chapter 5: Shapes and Patterns | Chapter 5: Addition and Subtraction Within 20 | Chapter 5: Ordinal Numbers | Chapter 5: Position | Chapter 5: Ordinal Numbers | Chapter 5: Numbers to 20 |

6 | Chapter 6: Ordinal Numbers and Position | Chapter 6: Numbers to 40 | Chapter 6: Numbers to 20 | Chapter 6: Numbers to 20 | Chapter 6: Numbers to 20 | Chapter 6: Addition to 20 |

7 | Chapter 7: Numbers to 20 | Chapter 7: Calendar and Time | Chapter 7: Shapes | Chapter 7: Shapes | Chapter 7: Shapes | Chapter 7: Subtraction Within 20 |

8 | Chapter 8: Addition and Subtraction Facts to 20 | Chapter 8: Addition and Subtraction Within 40 | Chapter 8: Length | Chapter 8: Length | Chapter 8: Length | Chapter 8: Shapes |

9 | Chapter 9: Length | Chapter 9: Length and Weight | Chapter 9: Weight | Chapter 9: Weight | Chapter 9: Comparing Numbers | Chapter 9: Ordinal Numbers |

10 | Chapter 10: Weight (1B) | Chapter 10: Numbers to 120 | Chapter 10: Comparing Numbers (1B) | Chapter 10: Capacity | Chapter 10: Graphs | Chapter 10: Length (1B) |

### Singapore Math Grade 2

## Singapore Mathematics Curriculum Comparison Grade 2

wdt_ID | Math in Focus | Math in Focus 2020 | Primary Mathematics US Edition | Primary Mathematics Standards Edition | Primary Mathematics Common Core Edition | Dimensions Math |
---|---|---|---|---|---|---|

1 | Chapter 1: Numbers to 1,000 (2A) | Chapter 1: Numbers to 1,000 | Chapter 1: Numbers to 1,000 (2A) | Chapter 1: Numbers to 1,000 (2A) | Chapter 1: Numbers to 1,000 (2A) | Chapter 1: Numbers to 1,000 (2A) |

2 | Chapter 2: Addition up to 1,000 | Chapter 2: Addition Within 1,000 | Chapter 2: Addition and Subtraction | Chapter 2: Addition and Subtraction | Chapter 2: Addition and Subtraction | Chapter 2: Addition and Subtraction Part 1 |

3 | Chapter 3: Subtraction up to 1,000 | Chapter 3: Subtraction Within 1,000 | Chapter 3: Length | Chapter 3: Length | Chapter 3: Length | Chapter 3: Addition and Subtraction Part 2 |

4 | Chapter 4: Using Bar Models: Addition and Subtraction | Chapter 4: Using Bar Models: Addition and Subtraction | Chapter 4: Weight | Chapter 4: Weight | Chapter 4: Multiplication and Division | Chapter 4: Length |

5 | Chapter 5: Multiplication and Division | Chapter 5: Length | Chapter 5: Multiplication and Division | Chapter 5: Multiplication and Division | Chapter 5: Multiplication Tables of 2 and 3 | Chapter 5: Weight |

6 | Chapter 6: Multiplication Tables of 2, 5, and 10 | Chapter 6: Mass | Chapter 6: Multiplication Tables of 2 and 3 | Chapter 6: Multiplication Tables of 2 and 3 | Chapter 6: Addition and Subtraction (2B) | Chapter 6: Multiplication and Division |

7 | Chapter 7: Metric Measurement of Length | Chapter 7: Graphs and Line Plots | Chapter 7: Addition and Subtraction (2B) | Chapter 7: Addition and Subtraction (2B) | Chapter 7: Multiplication and Division (4, 5 and 10) | Chapter 7: Multiplication and Division of 2, 5 and 10 |

8 | Chapter 8: Mass | Chapter 8: Multiplication and Division | Chapter 8: Multiplication and Division (4, 5 and 10) | Chapter 8: Multiplication and Division (4, 5, and 10) | Chapter 8: Money | Chapter 8: Mental Calculation |

9 | Chapter 9: Volume | Chapter 9: Multiplication Tables (2, 5, 10, 3 and 4) | Chapter 9: Money | Chapter 9: Money | Chapter 9: Fractions | Chapter 9: Multiplication and Division of 3 and 4 |

10 | Chapter 10: Mental Math and Estimation | Chapter 10: Time and Money | Chapter 10: Fractions | Chapter 10: Fractions | Chapter 10: Time | Chapter 10: Money |

### Singapore Math Grade 3

## Singapore Mathematics Curriculum Comparison Grade 3

wdt_ID | Math in Focus | Math in Focus 2020 | Primary Mathematics US Edition | Primary Mathematics Standards Edition | Primary Mathematics Common Core Edition | Dimensions Math |
---|---|---|---|---|---|---|

1 | Chapter 1: Numbers to 10,000 (3A) | Chapter 1: Numbers to 10,000 | Chapter 1: Numbers to 10,000 (3A) | Chapter 1: Numbers to 10,000 (3A) | Chapter 1: Numbers to 10,000 | Chapter 1: Numbers to 10,000 |

2 | Chapter 2: Mental Math and Estimation | Chapter 2: Addition Within 10,000 | Chapter 2: Addition and Subtraction | Chapter 2: Addition and Subtraction | Chapter 2: Addition and Subtraction | Chapter 2: Addition and Subtraction Part 1 |

3 | Chapter 3: Addition to to 10,000 | Chapter 3: Subtraction Within 10,000 | Chapter 3: Multiplication and Division | Chapter 3: Multiplication and Division | Chapter 3: Multiplication and Division | Chapter 3: Addition and Subtraction Part 2 |

4 | Chapter 4: Subtraction up to 10,000 | Chapter 4: Multiplication Tables (6, 7, 8, 9, 11 and 12) | Chapter 4: Multiplication Tables of 6, 7, 8 and 9 | Chapter 4: Multiplication Tables of 6, 7, 8 and 9 | Chapter 4: Multiplication Tables of 6, 7, 8 and 9 | Chapter 4: Multiplication and Division |

5 | Chapter 5: Using Bar Models: Addition and Subtraction | Chapter 5: Multiplication | Chapter 5: Money | Chapter 5: Data Analysis (Presenting Data, Probability) | Chapter 5: Length | Chapter 5: Multiplication |

6 | Chapter 6: Multiplication Tables of 6, 7, 8 and 9 | Chapter 6: Using Bar Models: The Four Operations | Chapter 6: Mental Calculation (3B) | Chapter 6: Length (3B) | Chapter 6: Mass and Weight (3B) | Chapter 6: Division |

7 | Chapter 7: Multiplication | Chapter 7: Fractions | Chapter 7: Length | Chapter 7: Weight | Chapter 7: Capacity | Chapter 7: Graphs and Tables |

8 | Chapter 8: Division | Chapter 8: Measurement | Chapter 8: Weight | Chapter 8: Capacity | Chapter 8: Money | Chapter 8: Multiplying and Dividing with 6, 7, 8, and 9 |

9 | Chapter 9: Using Bar Models: Multiplication and Division | Chapter 9: Area and Perimeter | Chapter 9: Capacity | Chapter 9: Money | Chapter 9: Fractions | Chapter 9: Fractions Part 1 |

10 | Chapter 10: Money (3B) | Chapter 10: Time | Chapter 10: Graphs | Chapter 10: Fractions | Chapter 10: Time | Chapter 10: Fractions Part 2 |

### Singapore Math Grade 4

## Singapore Mathematics Curriculum Comparison Grade 4

wdt_ID | Math in Focus | Math in Focus 2020 | Primary Mathematics US Edition | Primary Mathematics Standards Edition | Primary Mathematics Common Core Edition | Dimensions Math |
---|---|---|---|---|---|---|

1 | Chapter 1: Working With Whole Numbers to 100,000 (4A) | Chapter 1: Working With Whole Numbers (to 1,000,000) | Chapter 1: Whole Numbers to 100,000 (4A) | Chapter 1: Whole Numbers (4A) | Chapter 1: Numbers to 1,000,000 (4A) | Chapter 1: Numbers to One Million (4A) |

2 | Chapter 2: Estimation and Number Theory | Chapter 2: Multiplication and Division | Chapter 2: Multiplication and Division of Whole Numbers | Chapter 2: The Four Operations of Whole Numbers | Chapter 2: The Four Operations of Whole Numbers | Chapter 2: Addition and Subtraction |

3 | Chapter 3: Whole Number Multiplication and Division | Chapter 3: Fractions and Mixed Numbers | Chapter 3: Fractions | Chapter 3: Fractions | Chapter 3: Fractions | Chapter 3: Multiples and Factors |

4 | Chapter 4: Tables and Line Graphs | Chapter 4: Decimals | Chapter 4: Tables and Graphs | Chapter 4: Geometry | Chapter 4: Operations on Fractions | Chapter 4: Multiplication |

5 | Chapter 5: Data and Probability | Chapter 5: Conversion of Measurements | Chapter 5: Angles | Chapter 5: Area and Perimeter | Chapter 5: Measures | Chapter 5: Division |

6 | Chapter 6: Fractions and Mixed Numbers | Chapter 6: Area and Perimeter | Chapter 6: Perpendicular and Parallel Lines | Chapter 6: Decimals (4B) | Chapter 6: Decimals (4B) | Chapter 6: Fractions |

7 | Chapter 7: Decimals (4B) | Chapter 7: Angles and Line Segments | Chapter 7: Area and Perimeter | Chapter 7: The Four Operations of Decimals | Chapter 7: The Four Operations of Decimals | Chapter 7: Adding and Subtracting Fractions |

8 | Chapter 8: Adding and Subtracting Decimals | Chapter 8: Polygons and Symmetry | Chapter 8: Decimals (4B) | Chapter 8: Congruent and Symmetric Figures | Chapter 8: Geometry | Chapter 8: Multiplying a Fraction and a Whole Number |

9 | Chapter 9: Angles | Chapter 9: Tables and Line Graphs | Chapter 9: The Four Operations of Decimals | Chapter 9: Coordinate Graphs and Changes in Quantities | Chapter 9: Area and Perimeter | Chapter 9: Line Graphs and Line Plots |

10 | Chapter 10: Perpendicular and Parallel Line Segments | Chapter 10: Measures | Chapter 10: Data Analysis and Probability | Chapter 10: Bar Graphs and Line Plots | Chapter 10: Measurement |

### Singapore Math Grade 5

## Singapore Mathematics Curriculum Comparison Grade 5

wdt_ID | Math in Focus | Math in Focus 2020 | Primary Mathematics US Edition | Primary Mathematics Standards Edition | Primary Mathematics Common Core Edition | Dimensions Math |
---|---|---|---|---|---|---|

1 | Chapter 1: Whole Numbers (5A) | Chapter 1: Whole Numbers and the Four Operations | Chapter 1: Whole Numbers (5A) | Chapter 1: Whole Numbers (5A) | Chapter 1: Whole Numbers (5A) | Chapter 1: Numbers to One Million (5A) |

2 | Chapter 2: Whole Numbers Multiplication and Division | Chapter 2: Fractions and Mixed Numbers | Chapter 2: Multiplication and Division by a 2-Digit Whole Number | Chapter 2: More Calculations with Whole Numbers | Chapter 2: More Calculations with Whole Numbers | Chapter 2: Addition and Subtraction |

3 | Chapter 3: Fractions and Mixed Numbers | Chapter 3: Multiplying and Dividing Fractions | Chapter 3: Fractions | Chapter 3: Fractions | Chapter 3: Fractions | Chapter 3: Multiples and Factors |

4 | Chapter 4: Multiplying and Dividing Fractions and Mixed Numbers | Chapter 4: Decimals | Chapter 4: Area of a Triangle | Chapter 4: Multiply and Divide Fractions | Chapter 4: Multiply and Divide Fractions | Chapter 4: Multiplication |

5 | Chapter 5: Algebra | Chapter 5: Four Operations of Decimals | Chapter 5: Ratio | Chapter 5: Perimeter, Area and Surface Area | Chapter 5: Perimeter and Area | Chapter 5: Division |

6 | Chapter 6: Area | Chapter 6: Volume | Chapter 6: Angles | Chapter 6: Ratio | Chapter 6: Ratio | Chapter 6: Fractions |

7 | Chapter 7: Ratio | Chapter 7: Line Plots and the Coordinate Plane | Chapter 7: Decimals (5B) | Chapter 7: Decimals (5B) | Chapter 7: Decimals (5B) | Chapter 7: Adding and Subtracting Fractions |

8 | Chapter 8: Decimals (5B) | Chapter 8: Polygons | Chapter 8: Percentage | Chapter 8: Measures and Volume | Chapter 8: More Calculations | Chapter 8: Multiplying a Fraction and a Whole Number |

9 | Chapter 9: Multiplying and Dividing Decimals | Chapter 9: Ratio | Chapter 9: Average | Chapter 9: Percentage | Chapter 9: Volume | Chapter 9: Line Graphs and Line Plots |

10 | Chapter 10: Percent | Chapter 10: Percent | Chapter 10: Rate | Chapter 10: Angles | Chapter 10: Average, Plots and Graphs | Chapter 10: Decimals (5B) - Available June 2020 |

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