Primary Math US 4B Set

Primary Math US 4B Set


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Item #: PMUS4B
Grades: 4

Product Description:

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This package includes the following items:

Category Description for Primary Math U.S. Edition (Gr. 1-6):

I'll admit, my initial reaction to this program was skeptical. The textbooks are thin and have a straightforward, no-nonsense appearance. Texts switch from full-color to two-toned pages after second grade, and all workbooks are printed in black and white. After spending a great deal of time evaluating the program's contents, however, my opinion has improved considerably. Primary Math uses a concrete-to-pictorial-to-abstract approach to teaching. Concrete illustrations are incorporated heavily in the early grades, gradually giving way to more abstract representations so that math is learned meaningfully. The program builds strong problem solving, critical thinking, and computational skills through well-chosen practice problems.

Each grade consists of two semester sets to be completed in one year. For example, the complete first grade curriculum requires the 1A and 1B textbooks (non-consumable) and the 1A and 1B workbooks (consumable). Workbook assignments are directly correlated with each textbook. Small arrows, usually located in the lower left hand corner of a page, specify when to pause in the text and what exercise number to complete.

Brief teacher’s instructions are provided in each textbook’s preface, which I highly suggest reading. Although the pace of the course really depends on the individual student, 2-3 pages in the text is usually enough for one day’s lesson. To effectively use the textbook, the teacher should study the examples ahead of time in order to determine the best way to verbally explain a concept to the student. Teacher-student or student-student discussions are an important part of this program. Unfortunately, the text doesn’t tell you how to facilitate discussions. Fortunately, there are now Teacher Guides and Home Instructor Guides available for all levels.

Both the Teacher Guides and the Home Instructor Guides include answers to the textbook and workbook problems. Both of these publications help teachers understand the course material and provide suggestions to help you introduce concepts. As a general rule, the TGs are more oriented to the classroom while the HIGs are more geared to working one-on-one with a student. However, both provide detailed lesson plans. The TGs have daily lesson plans while the HIGs provide teaching segments indicating the number of weeks to spend per unit. A significant difference between the two is that the HIGs have a sidebar column that shows assignments complete with answers and often solutions. Assignments in the TGs are listed within the lesson plans and all answers are in the back of the book. Also included in the appendix of each are mental math worksheets and some teaching helps. Answers (but no solutions) to the U.S. edition textbooks and workbooks are also available in separate answer key booklets. For convenience, we have put together sets for each grade and semester that include the text, workbook and HIG.

TGs and HIGs both include lists of suggested manipulatives and materials. (please see our Singapore Math Manipulative category at the end of the Singapore Math section.

Extra practice sets are included in all textbooks, except first grade. These problem sets are optional and should be done only after the workbook exercises for that section have been completed. Cumulative review sections are also incorporated into the text, although not on a daily basis like Saxon. Review sections are also included in each workbook. Although these problem sets are optional, I would strongly suggest completing the extra practice. Some of the review sets are quite lengthy, and you might want to consider devoting a day’s lesson to review whenever a longer set arises. I suspect a key factor to this program’s success in Singapore is that students are both motivated and expected to practice their math skills through homework and optional problem sets use is strictly up to the teacher, although Primary Math tends to emphasize mental calculations.

While some believe that Primary Math contains “just the right amount of practice”, others believe not enough is provided. For students who feel they need more practice to really “own” a concept or skill, a variety of supplements, specifically designed to complement Primary Math, are available.

Compared to Saxon Math, Primary Math encompasses a narrower scope. While Saxon Math covers coordinate graphing, negative numbers, square roots, and probability, these topics are omitted from Primary Math and are not covered until New Elementary Math. The smaller scope, however, allows the program to emphasize the basics. Primary Math focuses on the four arithmetic operations (using whole numbers, fractions, and decimals), perimeter, area, volume, angles, quadrilaterals, symmetry, time, length, weight, money, graphs, and algebraic expressions (introduced in 6th grade). Saxon Mathmoves a bit slower introducing Algebra in Math 87. Miquon, which only covers grades 1-3, correlates very well with Primary Math.

Category Description for Singapore Math Programs:

Countries around the world first became interested in Singapore’s math curriculum when results of the Third International Math and Science Study (TIMSS) were published in 1995. Conducted by the International Study Center at Boston College, achievement tests in both math and science were administered to students in over 40 countries. Students from Singapore ranked highly in mathematics achievement: 1st in the fourth, seventh, and eighth grade levels and 2nd at the third grade level. Results for the U.S. were disappointing: 10th in the third grade, 11th in the fourth grade, 23rd in the seventh grade, and 27th at the eighth grade level. In a follow-up study in 1999, Singapore again ranked 1st in eighth grade math achievement while U.S. eighth graders ranked 19th. Although a first place ranking does not necessarily imply the best program, something about Singapore’s math program was working.

“Singapore Approach Math” is a general term referring to a type of mathematical instruction (i.e. curriculum) developed from a syllabus designed by Singapore’s Ministry of Education in the 1980s. There were a number of revisions and the 3rd edition was the last edition used in Singapore. The good test scores were associated with this material and all of our Singapore Approach Math programs are based primarily on the 3rd edition although it is no longer available for sale. Components from different editions are not interchangeable but a student can move between the editions in-between levels.

Primary Math US (1-6) is an adaptation of the 3rd edition for use in the U.S. Although a small amount of content (division of fractions) from the 2nd edition was added back into the US edition, it is almost identical to the 3rd edition. The US edition adds sections for U.S. customary measurements and uses U.S. spelling and conventions. We expect this edition to be available indefinitely. ©2003

Primary Math S/E (Standards Edition) (K-6) was adapted to meet the pre-Common Core CA math standards. An additional amount of content (probability, data analysis, negative numbers, coordinate graphing) from the 2nd edition was added back in and topics were rearranged but it is similar to the US edition. Cumulative Reviews at the end of each Unit and practice sets within each unit were added. Textbooks are in color. ©2008 This edition includes Earlybird Kindergarten Math.

Primary Math CC (Common Core) (K-5) is aligned to the Common Core State Standards and is another adaptation of the 3rd edition. Only minor changes were made to the scope and sequence. Unit Reviews are no longer cumulative and Practices were removed although some of the content was incorporated into the lessons. ©2014 Includes Earlybird Kindergarten Math CC. This edition will be available for the foreseeable future.

Primary Math 2022 Edition (K-5) is a completely new revision retaining all the excellent teaching methods of the earlier Primary Math programs. Incorporating both cumulative assessments and challenging problem solving, mastery learning is emphasized. The scope and sequence is similar to previous editions and topics are aligned to state and national standards. ©2021-2022

New Elementary Math (7-8) is a no-frills program based on an older Singaporian program and covering integrated algebra and geometry. It’s considered a sequel to the Primary Math programs.

Math in Focus (K-8) was developed by Great Source (a division of Houghton Mifflin Harcourt) in conjunction with Marshall Cavendish (the original publisher in Singapore). Although the basic instructional sequences are similar and the content is very close to the SE, material added to the most recent editions brings it into alignment with CC. Math in Focus has a more American look and “feel.” ©2010, 2014

View the Singapore Approach Math Comparison Chart.


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This is our standard Math text - we love the way Singapore US Ed. teaches math. We have used this curriculum from the beginning.
User on Jan 3, 2023
it was required for my daughter's 4th grade Math 4 class.
Janine H on Jan 8, 2022
This is our standard Math text - we love the way Singapore US Ed. teaches math. We have used this curriculum from the beginning.
User on Jan 3, 2023
This is our 5th year using this math curriculum and although my daughter is not math leaning naturally, this curriculum has given her all the tools to be successful. She learns new concepts early, and has more time to process them and understand them. The repetition and mental aspect(and her hard work) has sincerely made her good at math.
alexa w on Apr 11, 2022
it was required for my daughter's 4th grade Math 4 class.
Janine H on Jan 8, 2022
We've been using Singapore Math for years now - it is unlike any other math program out there. Rigorous, but enjoyable exercises.
Darcie C on Jun 14, 2021
This was cheaper than what my cirriculum provider offered.
gina w on Sep 20, 2020
Required for school
Martha E on Aug 25, 2020
I have used Primary mathematics for several years now with my son and am really pleased with it!
Chasya G on Jul 21, 2020
After positive recommendations from others and after doing a little research myself, I decided to use this math curriculum. The website "Kate's Homeschool Math Help, was very helpful.
Sandra E on May 3, 2020
I am pleased so far with this math program because of it's mastery approach and pictoral to abstract representation. It is challenging for my 4th grader coming out of traditional school but we are able to pace it so that she is comfortable. We are also using level 1 for my first grader and am excited for the great math foundation she is getting with this curriculum.
Laura E on Mar 8, 2020
We've been using these sets from the beginning and my girls have done well with them.
Elizabeth F on Aug 15, 2019
I homeschool 2 boys and have had great success using this math curriculum. I like the sprial teaching method each new workbook provides.
Katie B on May 16, 2019
I love the concrete to pictorial to abstract approach and being able to complete each concept before moving on to the next concept. The option for additional review is a plus. I have confidence my child will have mastery of mathematics after we have completed this series.
Beverly S on May 2, 2019
Singapore has worked well for me and my boys. We have been using it about three years. It moves through the math curriculum in a logical way and the lessons are easy for the teacher to understand.
Jennifer M on Jan 4, 2019
We are using Singapore Math curriculum, and we were needing this set. Also, great price :)
User on Nov 2, 2018
I have been using this set with my daughter since K and I love it.
Heather H on May 26, 2018
Challenging math, effective teaching methods. Great for kids who are "math minded!"
michelle h on Apr 10, 2018
I love getting the bundle because it is cheaper and I know I am getting the books that go together. This is a major reason why I buy from rainbow resource, the bundles.
Emily D on Apr 4, 2018
We needed Set B because we have completed Set A
Kimberly R on Feb 4, 2018
We have used this curriculum since the 1st great and love it!
Carla K on Nov 13, 2017
Been using the Singapore Primary Mathematics Series for both my boys with great success since second grade.
Michelle S on Oct 16, 2017
Tried and true.
Meaghan E on Aug 8, 2017
We enjoy Singapore Math. It has enough repetition, but not overkill.
Genevie D on Jul 1, 2017
We've used this math curriculum since my oldest (now 10) was 5. All of my kids have used it with a degree of success and it's relatively easy to follow.
Stephanie P on Apr 19, 2017
Excellent math curriculum!
Maria Rosario Z on Apr 18, 2017
we like singapore. and are finishing up 4a with one kiddo.
Sarah S on Apr 10, 2017
We have been using Singapore Math US edition since we began. She preferred this to Life of Fred which she wanted to stop after the first book. Same answer for each one.
Talia S on Apr 5, 2017
We have used Singapore before and feel it is both enjoyable and challenging. As my child gets older and is more independent, I want her to be able to check her answers. So I had to purchase the teacher's manual in order to get the answer keys.
Mercedes C on Mar 17, 2017
We like the program
Kate B on Feb 11, 2017
I chose this program for my 4th grade daughter. Singapore math is streamlined, easy to use, and appealing to most children, regardless of their natural aptitude for math.
Bethany G on Sep 22, 2016
Continuing to use a great program. Just enough and to the point.
User on Apr 16, 2016
We love Singapore math!
Merrilee B on Mar 7, 2016
We've used the earlier grades and loved them.
Nina B on Feb 22, 2016
I love Singapore Math. It is working well for my children and giving them an excellent foundation. I believe it is more advanced than other programs we've used, but that's fine. We take additional time on units as needed and looked up helpful videos on Youtube. I only bought the first semester's books at the beginning of the year as I didn't want to commit to the whole year if it wasn't a good fit. Now, I'm buying the second semester's books.
User on Feb 8, 2016
Really solid math curriculum. No frill, but very challenging.
April J on Nov 30, 2015
we have used this curriculum for 1 year and it works well for us. We did Saxon for 4 years before that. The repetition was great in the younger years, but became busywork as my daughter got older.
Keri M on Nov 23, 2015
I have previously used Singapore Math. It works well for my child.
Erin B on Nov 3, 2015
We are more then halfway through 3B and ready to move on to the 4th grade level
Christina B on Oct 6, 2015
This is our 5th year using this math curriculum and although my daughter is not math leaning naturally, this curriculum has given her all the tools to be successful. She learns new concepts early, and has more time to process them and understand them. The repetition and mental aspect(and her hard work) has sincerely made her good at math.
alexa w on Apr 11, 2022
We've been using Singapore Math for years now - it is unlike any other math program out there. Rigorous, but enjoyable exercises.
Darcie C on Jun 14, 2021
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