Browsing All posts tagged under »negative integer«

Expressions

December 1, 2016

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#MTBOS — a twitter followee notes how confusing algebraic expressions are.   Yes, this is something that created cognitive dissonance for me, until I connected that oh, explicitly teaching what symbols means applies to math as well as reading.   Why should f(x) = mean “the function of x” when, applying the *rules* we teach, […]

Penultimate Monday

April 25, 2016

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Next Monday is the last MOnday of classes; exam week starts that Friday.   Yup, it’s busy in the tutoring lab! I did get in the 15-20 minutes to finish up editing the Key to Chapter One, though I will need to go back through it and find what I missed since it was very […]

Don’t ask :)

February 10, 2016

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It’s for that class. Okay, to update!   Our “assignment:”  To post about a worst case intervention… we were encouraged not simply to provide barriers to learning but to demonstrate Bad Design.  We were encouraged to include a visual.   I’d just seen somebody extolling the virtues of an “intelligent [computer] tutor” that included saying […]

Backing up …

February 6, 2016

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… the files, which is a step forward.  The Working Thing with title “Jan29” is now on Ay-soos, the GREENECK and the Transcend and the Camtasia flash drives and now the cloud knows where they are. Since my next Thing TO Figure Out is how to manage versions of things in GitHub, it’ll soon be […]

Those ever changing rules

August 15, 2014

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Nifty keen-o — http://www.nctm.org/publications/article.aspx?id=42799 will let you download an article listing some of the big conceptual confounders.   It has been really helpful for me to begin talking about integers with the idea that we may be uprooting some well-entrenched models of what math means:   that “plus” always means add and make a number bigger. […]

Decimated Decimals

June 27, 2014

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Hmmm… while I’m working on my Tone of Voice, I should prob’ly do the same for the tone of my digital communications. A poster plopped onto Facebook with pictures of foods and their prices; the salad was $4.99 and a burger and a coke were each labeled as “.99” cents. I felt compelled to contact […]

Screenshot from the App of Doom

May 23, 2014

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I’ve got the slider working, but now I need to think in that foreign language — the visual — so that this isn’t just some nicely colored blobs. I think my plan will be to figure out the other necessary “make it an app that works” logistics before diving back and trying to get it […]