Math Arguments

180 Days of Ideas for Discussion in Math Class. (as of 9July2014, we're in overtime!)

Showing posts with label Similarity. Show all posts

Saturday, April 18, 2015

436: Whiteboards at NCTMBoston

Found this in the #NCTMBoston exhibit hall. What questions do you have? #mathchat
— David Wees (@davidwees) April 17, 2015

Posted by Curmudgeon at 9:20 AM No comments:

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Labels: Ratio, Sequences, Similarity

Tuesday, February 3, 2015

390: White Space One

Is this figure drawn correctly?

How about this one?

Posted by Curmudgeon at 12:00 PM No comments:

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Labels: Geometry, Proportions, Similarity

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Curmudgeon: I'm a high-school math teacher completely frustrated with new math, reform math, fuzzy math, the color of math, talking about math, literacy across the curriculum and all those other things that get in the way of students actually learning math, not to mention the ever-present "You need to help raise our scores by taking one day a week to go over test-taking skills" and other administrative folderol. (He/Him/Mr.)

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