Math Arguments

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

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Wednesday, July 1, 2020

524: Is a HotDog a sandwich?

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Does the topology matter? If I were to completely separate the two halves, would it make a difference?
Friday, January 31, 2020

False Negatives and Cancer.

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In the voiceover, Cologuard claims it finds 92% of colon cancers. The ad also provides a generously large and easy legible banner stating th...
Thursday, December 19, 2019

522: Where to start with factoring

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You are asked to find the roots and factors of the following polynomial function: f(x) = x 4 – 2x 3 – 18x 2 + 6x + 45 By the rational ...
Tuesday, December 17, 2019

521: When is an outlier still an outlier?

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In a set of data, can the outlier also be the mode or does it stop being an outlier?

520: Dan or Mike? Who's Better at Doodle Jump?

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Every year I give this graphic comparing the Doodle Jump stats for @ddmeyer and his friend Mike. Give a couple of reasons why we could co...
Tuesday, April 16, 2019

519: Concavity

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I have a question that will help me understand the fundamental definition of concavity. If we have y=x^4, can we say that is concave up from...
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Wednesday, December 21, 2016

518: Interpret your results.

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Say you had data that told you that The proportion of all US public school students whose families are low-income: In 1989, less than ⅓ I...
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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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