Saturday, December 21, 2013

Favorite comments of '13, cont: Rivka and KimS

on Math problems of the Week: 5th grade Investigations vs. Singapore Math

Rivka said...

How foolish of me. As I started to read the problem, I assumed that it would lead the student towards discovering by what proportion doubling the side lengths increases the area. 

KimS said...
Among so many other things, this example highlights one of the primary shortcomings of Investigations. This problem, where the sides of a rectangle are doubled, could be used as a gateway for so concepts, like ratios, proportion, and scaling or perimeter, area, and surface area. The questions students could be asked and scenarios they could explore, to use Investigations type language, are endless. Instead you get an overly simplistic example with nothing more than "double the sides". 
It's the lack of depth in Investigations that constantly shocks me!

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