Dependent Sample Assessment Plots (DSAP) constitutute a way of visualizing data from pre-intervention and post-intervention sources in order to determine whether the intervention likely influenced any changes.
Suppose you’re an educator and you administer an assessment to students at the beginning of a unit asking about their level of confidence or understanding of a topic. You then teach a lesson that spans some period of time. At the end you collect responses to the same questions again. You now have a dependent sample: two responses that related to the same individual for some number of individuals.
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I love Apple’s design aesthetic. I see it in the simplicity of their physical and software UIs, although usually not in the baroque nature of their business processes. What frustrates me is the lack of parity among the Apple-born technologies. I don’t just want a good experience on one device, I want it on, between, and among all my Apple devices!
Case in point, a few years ago I submitted a note to Apple suggesting that they had missed the boat by not having the iPhone earphone controller/mic work on their notebook line, too. That is, I wanted to be able to iChat using the iPhone earbuds as my earphones and microphone. Sure enough, the latest MacBook Pro models have that feature. I’m not saying it was me! I’m sure many people had a similar idea, and told Apple about it, and I’m thankful for it. What I am asking is, why didn’t Apple notice it? Are their development efforts so siloed or their release cycles so offset from one another that it’s not possible?
Another, current, case in point: the push for ebooks. I have my iPad (thank you, Steve!) and I loaded iBooks on it. I like it. I like the upgrade even more. And there are more features I expect will come soon. However, it’s frustrating to not have iBooks parity between the iPad (/iPhone/iPod touch) and iTunes on my MacBook.
- on the iPad, I can’t easily manage my collection (gather new books, other than from the iBookstore, (and that’s yet another frustration!), although it’s slowly getting better with the “open in…” capability.
- on my MacBook, in iTunes, I can’t read the ebooks I’ve collected.
Or the jumble that passes for document management in iWorks for the iPad, or for the Notes app on the original iPhone, or… or…
If Apple truly wants devices like the iPad to be devices for everyone, then the user experience on different Apple devices really needs to be in parity from day-zero.
Don’t make me think twice.
The Problem: Create a basic 1970s style Pong game for one player using the Processing programming language. The paddle will be on the right and the ball will bounce off of the three other sides. If the ball passes the paddle while the ball is traveling to the right, game play ends. The paddle will be controlled by the keyboard’s UP and DOWN arrow keys.
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Recently, several students commented that I seemed to have a lot of classroom rules. This is an old refrain in my life, and, in a sense, it’s true. However, the rules I have are all just special cases of my basic three rules, which I share on my About Me page.
- If you are going to break the rules, don’t be obnoxious about it.
- If you can’t be engaged, don’t distract others. It’s unfair to both you and them.
- Don’t disappoint me.
- Don’t promise to focus, but fail to do so. Instead, acknowledge whatever is distracting you and address it.
- Be aware.
- Know what questions your classmates are asking.
- Recognize which questions are related to tweaking the solution and which are related to a different problem context.
A full sized version of my rules diagram
I think my biggest failing in the classroom is that I’m uneven in the application of the rules, which is perceived as me being arbitrary. Inconsistency and randomness seem very similar to the outside observer.
I sometimes let feature creep take over the problem statement, which can lead to unintentional complexity or student confusion as the problem changes. I need to spend more time up front specifying the problem completely with students so that it’s clear to them and me what the invariants are.
I also find it difficult to ask a student actually to leave the classroom. I’m forever optimistic that the unfocused student will find moments of clarity and engage with the course material. Often, they do, but unfortunately, while I’m waiting for that to happen, the class as a whole is affected and, generally, material isn’t covered as concisely, clearly, or completely as might have been the case otherwise, thereby disadvantaging the other students who could have gone further, faster. Such is the nature of a set of random people with diverse metacognitive skills and needs. Still, I’m certain that I could serve better both ends of the spectrum.
I’d like to give a brief overview of computational efficiency, since it’s a topic that has come up in a few conversations recently. The super short version is this: it’s often helpful to understand the resource (time, space, or power) needs for a given algorithm. Why? Because we want the fastest algorithm, or the one that uses the least amount of storage on our hard drive. In extreme computing environments (think Mars Rover, Apollo capsules, etc), we many have very limited resources available. For example, your digital wrist watch almost certainly has more memory than the Apollo capsules, which only had about 32KB of RAM. How can you possibly land a person on the moon with only 32KB?!!
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It strikes me that co-work spaces and coffee shops are similar, but… not. Your typical coffee shop grudgingly offers moderately useful WiFi (can we get rid of the 20 minute timeouts and required “accept terms” pages, please!) and a few power outlets and has yet to figure out what to do with all these individual patrons taking up so much table space for so long. In short: lots of coffee, little access to power or high speed WiFi.
Co-work spaces have more than enough power outlets and Wifi, usually high speed and reliable (if not, find another co-work space!), but very little coffee. People are expected to come in, spend time without buying anything, and slurp all the Internet they can.
Could we have a coffee shop-style chain of co-work shops with space, meeting rooms, power, and WiFi and sell day passes/memberships? What’s the critical population/entrepreneurial density to sustain it?
So-called “content providers” who provide little to no content in their RSS feeds break my flow. They’re an annoyance to read. Their one-line teasers drive me away from their content, not toward it. I tend to unsubscribe from those feeds, rather than visit their websites.
If your one-paragraph introduction is compelling, I’ll visit your site to read the rest. However, your one-line teasers are rarely compelling and often annoyingly vacuous.
Please, provide the content and let me decide how to consume it.
While many content providers are working diligently to find ways to lock us in to their content and to exclude aggregation, it’s aggregation that I want!! I want to be able to read my content in the form and manner that fits my workflow of the moment.
Reeder for the iPad is a great example of an app that makes reading a pleasure. It’s fast; amazingly fast. I can read my Google Reader subscribed feeds, mark items for further follow-up, forward them to my Twitter feed (Note to Reeder devs: I maintain more than one Twitter account and more than one account on other social networking sites, to separate the personal from the professional roles vested in me), add it to my Instapaper account, and so on. In short, reading news feeds in Reeder is a pleasure; very nearly perfect.
With the explosion of applications for the iPhone and iPad, I wanted to point out that, for many things, I don’t want an app for that! Consider the works of Shakespeare; I really don’t want a separate app for each of his plays and sonnets. Some books and magazines are being published as separate apps, to take advantage of the graphics in OpenGL ES, to control content distribution, etc; I understand their reasoning. But I don’t want one-app-per-book; it’s too messy and disjoint. Similarly, I don’t want one-app-per-magazine or one-app-per-newspaper; I read too many sources each day for that model to work.
What I want is to be able to retrieve, review, annotate, and share content I view with the tools I find most natural and that enable my workflow. I do wish “content providers” could grasp that and start providing some content, instead of trying to lock it away.
Like many educators, I worry about the level of effort that my students commit to their studies (the process) and the quality of their work (the product). We call the process many things: engagement, time on task, passion… But we mean to describe that self-driven, motivated commitment to learning for the sake of learning that we value.
Unfortunately, in many educational environments, the standard proxy for effort is the course grade. Grades are a poor proxy, but are so ingrained in educational practice (in some of the institutions where I teach) and in students’ minds that it may be useful to consider a way to structure grade rewards to encourage the genuine engagement from students that we desire.
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