Thoughts on teaching, technology, learning and life in an era of change.

Archive for November, 2008

So many great ideas, so little time…
November 30th, 2008

This evening I checked through my feedreader, I use NetNewsWire. As I scan through the blog posts and the various news feeds I select those items that I would like to explore further. I prefer to read the full post in a browser. Clicking on the feed title opens each post in a browser with a new tab. I then quit NetNewsWire and begin reading the relevant posts in Firefox or Safari for example.

Tonight I earmarked about 50 items. There is a variety of content. Book reviews, inspiration, video, links, resources, technical tips, sites I feel that may benefit my colleagues and so on.

Fifty great ideas. Tap twice to begin, tap once to stop.

I will read through a number of the items this evening, comment here and there, and continue with the rest during the week. I may even add a few to Diigo (and Delicious by default).

At other times I may note 60, 70, 80 or more posts or items to read. It is overwhelming at times. There is so much great stuff out there. So many great ideas, so little time…

Google Maps: World’s largest liquid paper correction?
November 23rd, 2008

This morning I posted about Google Maps and some of the interesting discoveries made by users of the tool in the past. I just made one of my own. I was exploring the town of Pasir Ris in Singapore and discovered a strange white blotch near the intersection of Pasir Ris Drive 1 and Pasir Ris Drive 4.

View Larger Mape

What is this?

What can it be? A massive liquid paper spill? A horrendous bird dropping?

Google Earth discoveries
November 23rd, 2008

Google Earth and its browser based cousin Google Maps fascinate. This morning I read that a possible meteorite crater has been discovered in western New South Wales. The report in the Sydney Morning Herald tells the story of opal miner Mike Fry and how he spotted the crater via Google Earth. Mr Fry had been using Google Earth to explore terrain for possible opal mining sites. The site requires further geological investigation to confirm it is the result of an meteorite impact. The western rim of the site is visible. The eastern rim has been significantly eroded and is no longer visible.

View Larger Map

Earlier this year another potential impact crater was discovered in Western Australia by Dr Arthur Hickman, a government geologist with the Geological Survey of Western Australia.

View Larger Map

If you are interested in similar discoveries and meteorite craters around the globe this Google Earth Hacks site, Craters [scroll down], and this Google Maps site, Meteor Craters may interest you.

It fascinates that both of these geological ‘discoveries’ were made whilst seated in front of a computer display.

Have you ever made a ‘discovery’ while exploring Google Earth or Google Maps. Some time back I was exploring some of the towns where my wife and I had lived while we were living in Singapore. To my surprise I ‘discovered’ that a group of trees that were located in a park that was adjacent to our estate spelt out the name of the town, Pasir Ris. We had walked through and around the park many times yet we never realised that the trees had been so planted.

View Larger Map

In the classroom I like to use Google Earth to support the teaching of history. It is particularly useful when teaching students the history of the Persian Wars. Sites for battles such as Marathon, Salamis, Thermopylae and Artemisium are all accessible. Of course the terrain and coastlines have altered to some extent yet the maps provide an invaluable viusal for the students and it makes the events all the more tangible.

View Larger Map

Battle of Marathon site. Athenian soldiers are buried in this mound.

View Larger Map

Both the Battle of Thermopylae and the naval battle of Artemisium were fought in this region.

View Larger Map

The Battle of Salamis was fought in the narrows between the island of Salamis and the coastline of ancient Attica

So, have you made any “discoveries” using Google Earth? What do you think are some of the more interesting locations visible via Google Earth? How do you use Google Earth in the classroom?

Teach the past or teach the future?
November 17th, 2008

Presently watching a documentary on television entitled “Where’s My Robot?“. Will not go into too much detail. Essentially the presenter went on a quest around the world looking for the robot that he had wanted as a child. Robots of varying capabilities in laboratories around the world were investigated. Researchers still have a long way to go. I wonder if this area of research is useful. Robots that can function in hazardous environments will be practical. Yet I wonder, are we spending money in the right places?

Given the challenges that the human race face with global climate change, for example, I wonder if I should change tack and begin teaching students about the past, the present and also the future. As a child I was so looking forward to the future. Well, the future has arrived and it has not matched my youthful expectations.

Growing up I had an interest in astronomy, space exploration and the future. I enjoyed reading books that provided glimpses into the future. When I turned 10 my father gave me a book entitled “Our World In Space and Time“. It was published in 1959. I have scanned a couple of images from the book in order to illustrate my thoughts. The book was essentially an overview of the the planet earth, its place in the universe and mankind. It was anglo-centric and written with an “imperial” view of the globe and its residents.

The overall impression it gave of the future was optimistic. There was no real hint that the resources of the planet were finite. In fact one of the chapters was entitled, “Forests that cover a quarter of the earth”. The chapter mentions that although there is a timber shortage in Europe and that “western Europe still needs more timber than it can easily come by.” Timber could be easily sourced from elsewhere. The image below faced the chapter. As you can see it shows forest clearing. It is depicted as a manly and exciting adventure.

Cut them down boys. Plenty more elsewhere.

The United Nations reports that about half of the world’s forests had disappeared and that most of that loss occurred during the three decades leading up to 1997. Afforestation projects are reversing the trends in some areas but it is not enough. ”Deforestation, mainly due to conversion of forests to agricultural land, continues at an alarmingly high rate – some 13 million hectares per year.” [Global Forest Resources Assessment 2005].

I live in Australia. It has the world’s fifth highest ecological footprint in the world. We are one of the greediest nations on the planet per capita. Shame. We need to do something.

The same book provided an optimistic view of space exploration as well. That dream has certainly not come to pass. The book and myself envisioned the 21st century with significant orbiting space stations, regular manned trips to the moon, bases on the moon, explorers on Mars and manned journeys making their way to the outer reaches of the solar system. Admittedly the text book was published in 1959 and Yuri Gagarin had not made the first manned space flight. But the vision seemed so possible.

The world in 2000

In 1973 I bought a book entitled Challenge of the Stars. It was published in 1972. It set out a series of predictions regarding the exploration of space by mankind. One of them was the establishment of a base on the moon by the 1990s. The illustration below sets out their ideas for life on the moon about 1990. It all seemed so easy back in 1973.

Moonbase 1990

I watched Stanley Kubrick’s 2001 A Space Odyssey as well during the evening. It presented a magnificent view of space travel in 2001 with regular space flights by Pan American Airways, massive space stations (that resembled a five-star hotel within), a moon shuttle, large bases on the moon, inter-planetary travel and so on. It was a grand vision. In 1968 it all seemed to be within our grasp. It seemed that all of that could be achieved. [I am not advocating that the human race attempt to achieve these goals now. More important matters are pressing.]

What has happened? The Clavius moon base illustrated in 2001 A Space Odyssey could not even be built on the planet earth in 2008 let alone on the moon. This planet is too busy building massive shopping centres while others starve. Nothing shits me more than seeing news reports about food eating contests, world record hot-dog consumption attempts and the like. I think that is obscene, particularly when one is likely to see images of starving or poverty stricken children during the same news bulletin. What is wrong with the human race?

In recent weeks wealthy nations around the world have raised nearly $USD5,000 billion to fight the global financial crisis. I am not an economist but one wonders if the planet’s economy was better managed in the first place surely that $USD5,000 billion could have been put to use preventing some of the woes that face us in the 21st century? Where did that money come from?

Governments around the world are tightening their budgets and going into deficit as well. Will they also reduce their proposed budget allocations originally designed to combat global climate change? Where do all of those promises stand now?

Imagine if governments no longer had to include the military in their budgets? The money could be spent on cleaning up the planet and feeding people. Of course, if that was to happen there would be military coups on every continent. The military would not allow it to happen.

There are times when I feel guilty. I have this laptop, a digital camera, a TV, etc. What is my ecological footprint?

The optimistic vision of the 21st century that I grew up with as a child is not coming to pass. The 21st century is beset with famine, poverty, climate change and a growing chasm between the rich and the poor.

I feel that we should be teaching students a range of values where materialism is not paramount. Community, resilience, sharing and giving. Positive values for the future. [I hope I do not sound like a politician. It sounds like something Kevin Rudd would say.] Yes, we share by example in our schools yet I feel that a more substantial slice of the curriculum should be devoted to teaching our students and ourselves how to really live on this planet.

It is the only planet that we have and given that by 2050 mankind will require the resources of 2 or 3 similar planets to satisfy the needs of the human race one wonders what will be left for the children of our current crop of students? Presently it is taking the planet 1.2 years to regenerate what is taken by mankind in a single year.

We need a new subject. It’s focus should be on the future. Not sure what to name the subject. But we need it. Maths, English, Music, History, Art, Science, Geography, and… Life.

Addedndum. I was exploring the ABC web site and discovered this interesting clip on their new Fora site. I am yet to watch all of it however it fits in with my thoughts here to some extent. The video consists of a debate between Harvard historian Niall Ferguson and futurist Peter Schwartz about which of the two disciplines is the better: Historian or Futurist?


Thunderstorm across the Illawarra
November 14th, 2008

As I type the last few drops of rain are falling on the verandah. A storm just crossed the Illawarra coast. There was quite a great deal of lightning. I managed to capture one bolt. I left the shutter open for 10 seconds and narrowed the aperture.

Not too high tech or professional but it worked, at least for the photograph above. I have played around with the photography of lightning in the past. I am quite happy with the photograph below. After that shot was taken I went inside. The storm was too close for comfort.