Is there an echo in here?

August 17, 2014

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Just another example of “No, people are supposed to be terrified of numbers!” on NPR this morning. http://www.npr.org/2014/08/17/340944712/is-there-an-echo-in-here 4:30 Will Shortz introduces this weeks “number puzzle,” a “not very hard” one, in his words. The puzzle has a six-ring target with assorted numbers that you’d score for hitting it, which I don’t recall. (I think […]

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. […]

thINKING posiTIVE

August 5, 2014

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… but no, things didn’t improve.  However, my computer at work has not been tainted with updates and … things seem to be actually working.   I even got things like answers from StackOverflow — though the advice was to update everything and … no, that doesn’t work… and my subsequent question didn’t get answers.  […]

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Bicycle focus

August 3, 2014

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So… after those hours getting back to where I could start to re-do things, I couldn’t even get the code to format right to make the text string to tell the person to enter numbers. I went for a ride, against my policies for August Midday but it wasn’t too sunny or hot, and as […]

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UpDownDate…

August 3, 2014

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Perhaps I should refrain from being optimistic. I shan’t detail the past hours of utter futility — no, not with programming, which I would rather like to learn: just with being able to get the development environment to work, at all. I even resorted to posting a question at Stack Overflow, on the grounds that […]

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Divide by zero

August 3, 2014

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My plan Friday was to monitor just how much I got accomplished (y) in (x) minutes so I could wisely prioritize where to invest my time, choosing what wouldn’t get done. I successfully created an activity: “enter a subtraction problem and click to have it shown on the number line,” and … when I went […]

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Reusability Time

August 1, 2014

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So. I have a working app that will do the three things I wish it to do on a horizontal number line. I can let the student slide a slide bar back and forth to “see” subtraction on a number line. I can present the student with an equation on the number line and ask […]

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Posted in: visual math, w00t!
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