We are the Robots

While trolling through some old files today I happened upon this video of some Lego robotics projects done by my Year 10 students about five years ago. I recall that their task was to build a sort of merry-go-round device that conformed to a few specific requirements. From memory it had to have provision for two “seats”, and when a start button was pressed it had to rotate around align the first of these seats with a loading platform, pause, and then rotate to align the second seat. Once both seats were “loaded”, it had to pause, then start rotating slowly, then get faster, until it reached top speed and did a specified number of rotations. Once these were complete if had to slow down again to a stop, aligning the first seat, then pausing again and finally aligning the second seat.

Here’s the video…[kml_flashembed movie=”http://www.youtube.com/v/eYUOfaFEJF8″ width=”425″ height=”350″ wmode=”transparent” /]

It was an interesting exercise. The girls (it was an all girls class) initially struggled with the idea of gears and motors, and it took them a while, and a bit of guidance, to figure out just how a motor would be able to make something turn like a merry-go-round. I had come from an all-boys school the year before and was really struck by just how much more easily the boys seemed to find the mechanical part of this task. I don’t mean to sound sexist, but there really does seem to be a huge difference in the innate mechanical abilities between boys and girls. The boys didn’t hesitate to grab the motors, gears and cogs, and within minutes, most of them had rudimentary vehicles constructed. The girls, on the other hand, seemed to vacillate for ages before even wanting to pick up the Lego, and when they did, they took quite a lot longer to build any sort of device, much less one that was at all mechanically “correct” or usable.

However, once the girls got started, I found they came up with a much more interesting and creative approach to problem solving than most of the boys I’d taught. Perhaps this comes from a naiveté and a less developed understanding of what was “right”. Whereas the boys seemed to know that certain combinations of blocks and gears would not work, the girls seemed to be more able to just try things whether they worked or not.

Thinking about this now, some years hence from when that video was made, it reminds me of a book I read called Paradigms, by Joel Arthur Barker. In this book, Barker contends that some of the best problem solvers are those who are outside the prevailing paradigm… outsiders who, to the experts, “don’t really understand the question”. But it’s this not really understanding the question that leads to some of the most creative solutions to many previously “unsolvable” problems.

If you think about it, many of the best thinkers, the most inspiring leaders, and the people changing the world the most, are those who least fit our conception of who we expect them to be. Look at the Albert Einsteins, the Pablo Picassos, the Steve Jobs’s, the Richard Bransons of the world… the square pegs in round holes. People who challenge the status quo because they don’t know that what they are proposing is completely unrealistic. Most of the innovation and creative flow in our society comes from those who don’t know that what they don’t know doesn’t matter. So they invent the future anyway.

As educators, we have to make sure we don’t educate the creativity out of kids. I’ll finish with a link to a TED Talk by Sir Ken Robinson, who expresses this notion far better than I could ever hope to. Every teacher – no, every person –  should watch this video…

[kml_flashembed movie=”http://youtube.com/v/ga2CYYCrtNE” width=”425″ height=”350″ wmode=”transparent” /]

Skype + Phone = Skypephone

3skypephone.jpgAs an existing customer of 3, Australia’s first 3G mobile phone network, and an avid user of Skype, I was interested to see this new product just about to be released here in Australia. It’s a 3G/Wifi enabled phone that lets you make free Skype-to-Skype calls over wireless LANs. Given that I spend all day at work, and all my time at home bathed in the radiant glow of wifi, the ability to make free calls is pretty attractive. I’m assuming that it reverts back to a standard GSM phone when you wander off the grid, and switches back to wifi when you get back into a wifi zone. I need to read the fine print of course, but it’s an intriguing idea.

While it’s not exactly an iPhone (far from it) it certainly looks interesting and suggests that the already competitive mobile phone business is about to get a whole lot more heated in the next 12 months. There’s been no word from Apple as to when the iPhone might land in Australia, so this push by Skype and 3 might be a positioning strategy to establish themselves as players in the developing VOIP mobile scene before Apple gets a chance to dominate it completely.

Either way, we live in interesting times!

Tags: , ,

Mind Tools

I occasionally feel a little guilty. Although I am very much committed to the idea that technology should be integrated, no, more than that, embedded, into what happens in a classroom on a day-to-day basis, the truth is that I have spent many years teaching computing as a discipline in its own right. And I have to keep telling myself that that’s ok, that there are still many kids who have a deep interest in technology for the sake of technology and find the very nature of computing highly engaging as a stand alone topic. So I’m cool with that. It’s ok to be a geek.

I believe one mark of a good teacher is to be able to take complex ideas and simplify them without making them simple. For example, there are a couple of concepts in the realm of computing that are not really all that hard to understand but can be very hard to explain. Binary numbers can be one. Vector graphics another.

vectormagic.jpgSo I was really impressed when I saw VectorMagic, a somewhat geeky (yet very cool) web app put together by James Diebel and Jacob Norda from the Stanford University Artificial Intelligence Laboratory. I blogged a couple of thoughts about EPS files and vector graphics the other day and in the comments I was pointed to VectorMagic by Kathy Nann. What an amazing tool! Thanks Kathy!

I won’t blather on about the need for vector graphics and when you should use them… I blathered enough about that in that other post, so go read that if you dare.

What VectorMagic does is to take a bitmapped image (jpg, gif, bmp, etc) and trace the shapes contained within them in order to to convert them into vector outlines. This gives a remarkable crispness to the image at any resolution. Vector images don’t get blocky and full of artifacts as they get bigger. They just recalculate how to draw that shape a bit bigger using a nice sharp edge. I’m so glad I found this tool and I know I will get lots of use out of it. (Well, maybe not lots, but just knowing its there and what it can do makes it all worth it.

But the other thing that really struck me is just how good this sort of application is as a teaching tool. Because of the way it steps through the process and how it asks the user for questions about the image, it makes it so much clearer as to the real differences between bitmap and vector graphics. It even places them next to each other at the end, and lets you zoom and pan in real time to inspect the two image types. Visually, this is a really powerful way to learn about a concept that can be otherwise quite nebulous and hard to explain, and after using Vector Magic to convert a few images it would be hard NOT to understand the difference.

And it got me thinking about just how much we can use the the intuitive and malleable nature of software to assist us in explaining and investigating tricky ideas. Programs like VectorMagic are amazing in the way they can be used to visually demonstrate the bitmap/vector concept. Trying to explain sound waves to junior students can be hard, but when theses students can create, see and manipulate waveforms directly using Audacity it makes it much more concrete. Playing whatif games with spreadsheets, tracking data visually using Gapminder, directly manipulating the globe with Google Earth or creating 3D models with SketchUp… these tools make it almost trivial to convey what used to be challenging and hard-to-grasp ideas.

All of this should pave the way for us to help kids come up with better questions, and make better use of this new information. I’m going to try harder to make these tools do the jobs that they are good at, so that I can spend more quality time working with kids on the thinking skills that really matter.

Tags: , , , ,