I. The 6th problem set in the 5th grade TERC/Investigations Student Activity Book "Measuring Polygons" unit [click to enlarge]:
II. The 6th problem set in the Singapore Math Primary Mathematics 5A Workbook "Perimeter, Area and Surface Area" unit [click to enlarge]:
What are Singapore Math 5th graders missing out on by not spending time classifying shapes?
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2 comments:
They're missing out on nostalgia for 2nd grade.
My daughter just had the square-rhombus-rectangle stuff at the beginning of third grade math.
(Can't help noticing, by the way, that whoever did that Singapore page got 1a wrong. The triangle has an area of 9 unit squares.)
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