Part-Whole Cards

Part-Whole Cards

# 047340

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Item #: 047340
ISBN: 9781936266340
Grades: K-2

Product Description:

These are very similar in concept to the Number Bond cards same size (5" squares, rounded corners) but with black ink on white background and covering all combinations from 2 to 10, 80 cards total. One side of the card shows three numbers with one missing which are related to the others. The other side has the missing number supplied (and designated by an underline). The cards are designed to show the proportional relationship of the numbers; divided horizontally across the middle of the card; then the lower part divided proportionally. For instance, the 5-5-10 card shows the two fives in equal boxes on the bottom of the card. The 2-5-7 card shows the "2" in a disproportionately smaller section of the bottom than the "5" part. The largest number is always in the upper half of the card. Ideas for using the cards are provided. ~ Janice

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 seems to be working.

"Singapore Approach Math" is a general term referring to the math curriculum, or syllabus, designed by Singapore's Ministry of Education. The curriculum has been regularly revised over the last two decades, with most recent revisions in 2001. We carry two different lines. From we carry Earlybird Kindergarten Math (PK-K), Primary Math (1-6), and New Elementary Math (7-10). From Great Source Educational we carry Math in Focus (K-6).

Both of these programs are produced by the same company, Marshall Cavendish Education (Singapore). The U.S. Primary Math editions have a 2003 copyright, while the newer, Standards Edition have a 2008 copyright. These are both modifications of the original edition of Singapore math. These programs are distributed in the U.S. by They are essentially the same, though the Standards Edition has a small amount of added material and some of the sequences have been rearranged to better meet U.S. standards. Math in Focus has a 2009 copyright. It is distributed in the U.S by Great Source, a division of Houghton Mifflin Harcourt, and packaged for the homeschool community by Saxon Homeschool. So, the programs have common origins.

Primary Math and New Elementary Math are based on the 1997 mathematics syllabus. New Elementary Math has since been "phased out" of schools in Singapore (probably in favor of texts following the 2001 syllabus). However, Primary Math and New Elementary Math are the series that originally gained Singapore international recognition for excellence in mathematics.

There are now manipulatives especially designed to be used with the Singapore approach. Look for these at the end of this section.


Primary Subject
Grade Start
Grade End
Card Game
Brand Name
Sensational Math
0.75 (lbs.)
6.75" x 5.12" x 0.88"
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Why did you choose this?
Rainbow Resource Center Store
I chose this product to assist students in learning the relationship between addition and subtraction
Diana O on Oct 11, 2019
I chose this product to assist students in learning the relationship between addition and subtraction
Diana O on Oct 11, 2019
Help with learning to teach Singapore math to a 6 year old boy
User on Aug 14, 2017
Help with learning to teach Singapore math to a 6 year old boy
User on Aug 14, 2017
Are these cards laminated, so then you can use a dry erase marker on them?
A shopper on Oct 21, 2017
BEST ANSWER: They're not laminated. They are a thick, glossy paper. I wouldn't use a marker on them. RR does sell larger sheets to record and draw number bonds on their site. We used dry erase for those.
5.0 / 5.0
1 Review
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1 Star
Really brought the concept home for my student
We are working on decomposing numbers, these cards showing the accurate size to the number helped them guess, then know the missing number.
January 1, 2017
over 3 years ago

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