Thursday, September 26, 2013

Math problems of the week: 4th grade Investigations vs. Singapore Math

Words to numbers problems in 4th grade Investigations and Singapore Math.

I. The only words to numbers problem in the 4th grade Investigations Student Activity Book, "Landmarks and Large Numbers Unit" [click to enlarge]:



II. From the first words to numbers problem set in 4th grade Singapore Math Primary Mathematics 4A Workbook (the very first problem set in the book):



III. Extra Credit

Some critics have said that Singapore Math isn't workable in the U.S. because the Singaporean and American cultures are so different. Discuss how cultural differences might explain the difference in orders of magnitude in these words-to-numbers problems.

1 comment:

Auntie Ann said...

Through the joys of the Everyday Math spiral, our 6th grader had to write out a 9-digit number in words. He also had to figure out how an ancient might have invented the different Arabic numerals by selecting the lines in a square with an x in it.