The Multiple Dimensions of Time

I have been making decisions about the articles I require for my graduate class. I added a short Research Summary from AERA that considers the topic of Time to Learn (pdf). There are many facets to this topic. How long is the school day? How much time is spend on academic subjects and which subjects receive what proportion of the school day? How engaged are individual learners during the time allocated to a given subject?

I have long been interested in some of the theoretical issues associated with time. By long, I mean some of these topics were being raised when I was in graduate school. The notion that individual differences in time to learn may represent an alternate way to think about aptitude differences has long fascinated me. The assumed meaning of aptitude is that differences in aptitude are reflected in differences in how much is learned (given a fixed amount of time). Thinking of aptitude as differences in time to learn was originally not very practical – what is realistic about  understanding that less capable students may require 3x more time? Where would that time come from? Of course, ignoring this reality is also unrealistic. What is practical about offering many students less time than is necessary to learn what they need to learn? Such students simply fall behind, become frustrated, and give up. Mastery learning (a model of individualizing instruction I find most of my younger peers have never heard of) argued that moving ahead when understanding was present offered the most efficient approach to learning. Is differentiated instruction a new version of this claim (time and method)?

Whatever the skills to be acquired (traditional or 21st century), there are still important issues to be resolved regarding time in group settings. Perhaps it is time to expect students to acquire certain skills outside of the “school day”. I suppose this already happens for those with motivation and opportunity.

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ITunes – DRM Free Now and Then

I have used iTunes and the iTunes store since the beginning and have a substantial investment in music. I like the proposed change in the price structure – I buy mostly “older” music (blues, jazz, classic rock) so the lower price for this music is a good deal for me. The DRM free change is more difficult to evaluate. I do find it annoying to have music split between my office and home machines and no legal way to play one collection on the other machine. It seems to me new DRM-free music I download could be “duplicated” across my two machines. I assume this would be legal.

Unless I am missing something, the offer to remove DRM from existing music does not make sense. It seems likely a penalty for my existing purchases (cost to “upgrade” vs. cost to purchase now).

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The cost to do this across two machines (the cost for my home machine which has the smaller collection is shown here) is more than I am willing to commit.

I also wonder about the interest in the higher end charge for new releases. I know I can download DRM free songs from LaLa for .89 today – why would I pay more than this from Apple?

So – I like the move to DRM-free, but I don’t understand the policy regarding my existing collection.

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Picasa for the Mac

Macintosh users become comfortable with the tools that come with or can be inexpensively added to their Macs (e.g., iTunes, iPhoto). Why bother with similar apps? I don’t really have a great answer for this question. For me, possible answers include curiosity and perhaps experience with an application that works cross platform. The integration with cloud services may represent another advantage – mobileme is still too much of a mystery for me and I am willing to continue the search for something more.

I have commented on Picasa (Google) in previous posts. The caveat in my previous post was the lack of a Mac version. This has now changed – beta for the Macintosh. You need an intel-based Mac and 10.4+.

When you begin, Picasa offers the opportunity to search your computer for images. I turned the program loose without carefully considering the potential consequences. I have a huge collection of images in iPhoto. The message that offered me a choice of where to locate images specifically mentioned iPhoto. Picasa leaves images where they are (potentially scattered all over your hard drive) so my typically full speed ahead approach did not get me in trouble. Picasa is also sensitive to the presence of iPhoto and treats images stored in iPhoto as protected (read only) and makes a copy if you want to use the Picasa editing tools. This is a very nice approach for Mac users with a commitment to iPhoto.

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The advantage of Picasa on the Mac is probably the easy integration with Picasa online. Sample of uploaded images. Until the Yahoo financial situation is resolved, I am a little concerned about a total commitment to Flickr. Picasa (from Google) is a good hedge.

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First Day of 2009

We drove from western Wisconsin to western Iowa yesterday to visit mom. About 6 in the evening we came over a slight rise in the highway and were confronted with a herd of deer. No escape route and not enough time to stop. I know we struck at least two deer and messed up our car.

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We met a couple of nice officers after calling 911. Contrary to what I had assumed, the dispatcher did not know which county we were in let alone which mile marker we had just passed. Like I would have some idea. Explaining that I was on highway 60 close to an ethanol plant brought us help in about 20 minutes. One nice lady did stop to ask if we needed help. No claims adjuster will take a look at the car until Monday (accident was Thursday). My brother is lending us a car so we can get back to North Dakota and we will work out the details via phone.

Yes, those are dealer plates on the car. First accident of my life and it happens in a new car. Probably a good thing. The car handled very well – not certain what would have happened years ago if we would have experienced the same thing in our original VW van.

There must be some lessons here. I am trying to figure that out. You can’t control all of the variables. Sometimes a herd of deer decides to sacrifice a few members.

We are both fine and enjoying our holiday.

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