Thursday, November 6, 2014

Math problems of the week: Common Core-inspired test questions

From:


A problem purported to address the following Common Core standard for 8th grade geometry:
Understand congruence and similarity using physical models, transparencies, or geometry software.  
CCSS.Math.Content.8.G.A.1 Verify experimentally the properties of rotations, reflections, and translations.




Extra Credit:

Discuss the possibility that 8th graders already know what happens to figures when you drag them, stretch them, rotate them, or flip them.

Relate this possibility, along with the demands of this problem, to the issue of labels vs. concepts.

To what degree does this problem, rather than assessing attainment of CCSS.Math.Content.8.G.A.1, merely test vocabulary?

1 comment:

jmay said...

I really appreciate these Math Problems Of The Week postings. Could you please continue naming the source textbook (EngageNY in this case) in the post title? Different publishers are producing vastly different materials, all labeled "Common Core aligned" or "CC inspired". It's really helpful to distinguish the paths that different publishers are taking rather than lumping them all together.