Thursday, August 30, 2012

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

I. The second-to-last coin problem in the 4th grade Investigations Student Activity Book, Unit 9, "Penny Jars and Plant Growth", p. 66 [click to enlarge]:

II. The final coin problem in the Singapore Math Primary Mathematics 4B Workbook. Review II, p. 163 [click to enlarge]:

1 comment:

Anonymous said...

The investigations one is introducing linear graphs. The Singapore one is for probability or outcome trees. The two examples are not really related. I think they are addressing different concepts.

Plus, the Singapore example is from the standards edition, and probability was added to that just to meet the standards in California. In Singapore they don't teach that until secondary level. However, the material that was added does seem to be in keeping with the general level of expectation that students really are capable of thinking.