The Power of Mush-up

The following three youTube videos are based on the same song. Which one you think is better?

Here are my choices.

Place 3:


Place 2:


and the Winner:


Do you agree?

Here are two other based on different tunes. For those who have lived in Hong Kong, the tunes in the next will be very familar.

Use Google as Your Own P2P Network

More than just teach me how to Google as my own P2P network, I also learnt a few tricks as well.

1. intitle: in google search
2. that a period (.) in the search keyword stands for ., _ or space
3. making a bookmarklet (for firefox)

cool!

The Unique Effects of Including History in College Algebra

via Scout Report:

A team of mathematicians at Black Hills State University {...} decided to investigate what the effects of including historical modules in college algebra might be in regards to students' understanding and mathematical communication.

The result - 'Over the last three years at BHSU, great strides have been made in improving student outcomes in College Algebra with the inclusion of history in the course.':
1. increase in following enrolling (triagonometry) - 5 students in 2003 and 2004 to 20 students in 2007
2. significant improvement on test problems where mathematical vocabulary and notation have created difficulty for students in the past.
3. 10% increase in the College Algebra passing rate since 2005 has come since the addition of the historical modules

The faculty feels that including historical development of mathematics is of key importance and believe that the full benefits of history inclusion have yet to be reached.

Zeitgeist - the greatest lie ever told

Here are some comments about Zeitgeist - The movie from the post.

1. use cheap graphic effects with bad rendering and metaphors

2.

loosely plagiarized version of the God Who Wasn’t There, complete with much of the same archive footage. The premise is that Christianity is based upon previous religions. Fair enough, apart from the plagiarism

3.

usually means nothing and is patently false but incredibly seductive

Do they qualify as triangulation [see Where is the truth]?

The post coined FEBL (Fucking Entertaining Big Lie). I would add FEBLBP - FEBL Blog post!

Where is the truth?

In a comment left to Zeitgeist - The Movie, my reader asks

Ok, I understand that I shouldn't take this film as gospel and I need to find the answers for myself, but where? Wikipedia is apparently a joke. The internet is full of false information, and after watching this video I don't know if I can trust history books anymore. If we are in fact being lied to, then what resources exist that I can actually trust? I'm feeling very cynical about this. Can anyone ever really know the truth?

Good question. Where can we find the truth?

Different people will have different answers to this question. To me, where is only one way: Triangulation from multiple independent sources.

For scientific facts, If I were doing science, I would repeat the experiment myself and verify to my own satisfaction that the outcome is really as described. Unfortunately, under most circumstances, not everyone has the resource to repeat an experiment. The second best would be find other data of similar experiments and verify the data and calculation to see if the same conclusion can be drawn.

For historical accounts, such as 9/11, again triangulation from multiple independent sources. Some sources will have more weight than others, for example those first person account IMMEDIATELY after the event, those TV interviews on that terrible day. Other important things to look for are minor details - details that rehearsed versions will not cover.

By now, I have forgotten most of "Zeitgeist - The Movie", however there are a number of questions still remain in my mind which I don't have a satisfactory answer:

1. How to explain the claim that multiple explosions were heard by people escaping from the collapsing towers on that day. These people escaping from the falling towers did not have any motivation to tell any lie. They were saying what they felt/heard. May be the "explosions" were floors hitting one another. But the speed of collapse (at free falling speed) could not support floor hitting each other.
2. How BBC could have reported the collapse of building 7 BEFORE the building had actually collapsed? Millions of people would have seen that news (and there are plenty of that video on the web) and none have come forward to claim that that news was fake. So, how can we explain that?
3. I remotely remember I saw a photo of ground zero showing huge steel column with a clean skewed cut. If my memory of that photo is correct, how can we explain that clean cut would be caused by burning of airline fuel?

Back to the main issue of this post: Where can we find the truth? The answer will not come from those with vested interest. We should be looking at elsewhere, from sources with NO motivation to lie. We should forget about the theory and look for evidence and form a theory for ourselves.

Monkey keeps a pet cat

This monkey in a zoo is keeping a pet cat. Enjoy!

Free online citation tool - Zotero

from the website:

is a free, easy-to-use Firefox extension to help you collect, manage, and cite your research sources.

Look like I will be putting proper citation in future blog posts more.

Same Issue, different viewpoints

Shanghaiist has posted an interesting article: Made in China: Australia's Channel 7 vs. Al-Jazeera. Two youtube videos side by side, one by Australia's Channel 7 and other by Al-Jazeera.

Australia's Channel 7:


Al-Jazeera


I learn at least the following after viewing both videos.

1. While the Australian are complaining about the quality of products made in China, we must remember that it is the business that have created the issue in the first place. The workers who painted the toy with lead-based paint are at greater risk than the children who may play with the toy. If we are to lay blame, we should catch those who profiteering.

2. China has 1/4 of the world population. The sweatshop is not limited to those within the geographical borders.

3. Extending the issue, China is only one of the developing countries. As she progresses, she will definitely move out of the "sweatshop" era. However, there are many more under-developed countries. Would we, in the affluent countries, help these people?

Watch this as well:


and one of comment said it well:

Therefore, please, kids, China is not the point here. The point is Wal Mart, Capitalism, Globalization.
It is just happened that Wal Mart has found china to be the most cost effective place to produce its products at this moment. Tomorrow there will be other place, such as India or South Africa, even more cost-effective tha China.

When Wikipedia Is the Assignment

via OLDaily

The use of wikipedia as an assignment should (and *will* as more teachers understand the value of doing so) definitely receive great support and wide appreciation. The assignment suggested by the article has the following advantages:
1. a real introduction to the community of practice the students are aspired to.
2. a solid contribution to the broader community by the work done by the students.
3. a good motivator for students - the work is REAL and is appreciated by many.

I believe there is ground of improvement too.

Not all academic work and progress are made in a big step. In fact, small steps are the norm. As students begin participation of their chosen community of practice, we should encourage them to take part and contribute in smaller steps. Instead of asking students to submit a whole article (and potentially creating the disappointment of being merged or deleted by the wikipedia community), an equally valuable contribution would be to make positive improvements to existing articles.

If the weighting of the assignment is 40%, students can be asked to make 40 improvements to a broad range of relevant articles (of their own choosing preferably). If the improvement survives after a given time interval (depending on the revision cycle of the article), the point is awarded. Those who made contributions which do not survive the wikipedia review process, they may be given an opportunity by making another improvement to another article etc (time permitting, of course under the current "fixed time" slotted school system).

This change will help to cover a wider range of topics too.

Sketch gets student, 7, school suspension

I am seriously troubled by this story.

7 year old boy suspended from the Dennis Township schools for a stick figure drawing he created depicting one figure shooting another figure with a gun or water pistol.

1. School is a place for learning, ie making mistakes and learn from the mistake with little consequence *outside* the learning environment, ie the school. Suspension is hardly an educational device. You cannot educate people by denying the opportunity to educate them.
2. The mother re-confirmed the kid that he was NOT in trouble. But at the same time, the power of suspension as an educational device (which is wrong, but it seems that some people believe that it has) will be gone by equating suspension to "NOT in trouble"!
3. As far as I know, Americans glorify weapons culturally (Top Gun is a great example). How can we expect a 7-year old not to be fascinated by gun!
4. "Zero-tolerance policy for guns" applied to drawing (a form of expression). On the same token, we should also apply to the more common form of expression - language. The word "GUN" should be banned in school as well. Then the policy should read "Zero-tolerance policy for xxx" to be politically correct! Hey, isn't USA as the first amendment about "freedom of speech"

Airline food

For those who fly to conferences everyday and worry about what is put into your body, you may like to check out this web site before you book your next flight.

Students say...

200 students collaborated on ONE online document to bring us this 5-minute message (via Couros Blog)

The Ten Habits of Highly Effective Brains

Some key points:

"Use It or Lose It"

the brain only weighs 2% of body mass but consumes over 20% of the oxygen and nutrients

Practice positive, future-oriented thoughts until they become your default mindset and you look forward to every hansgrohe-downpour-air-royale-14in-shower.jpgnew day in a constructive way.

The point of having a brain is precisely to learn and to adapt to challenging new environments.

The Physics Behind Four Amazing Demonstrations

In my first lesson to a class I have not taught before, I liked to hang a large metal ball in the middle of the teacher's area at about head high. As I walked into the class after the students have settled in, I deliberately walked pass the hanging ball, pull it close to my face to the other end of the room. I would release the ball and start to greet the students.

I can assure you that the students will not be looking at you. Instead they will be watching the ball as it swang to the other side of the room and came back to your face looking like to hit you soon.

As long as you keep steady, the ball will never hit you. But the dramatic effect will sure to hold your students attention to you for the rest of the year.

Here are 4 other dramatic demonstrations from David G. Willey.

Let's make Physics interesting, to the students!

New Math: Equations for Living

Book links: Amazon and Powells

New Blog on Virtual Worlds & Learning: Pop.Cosmo

As the time of writing, this new blog has 4 posts.

From the first post:

This site has been created so that we might be able to share our research findings more quickly and efficiently with a broader audience than academic print journals sometimes allow.

I look forward to reading some interesting research findings from this.

Don't tell me you sell 'learning'

I totally agree.

What learning is NOT is a product. It can NOT be shrink-wrapped. It can NOT be updated to version 1.2. It does NOT rely on a particular OS or even give a crap about what version of the Web we happen to on.

I agree we should encourage semantic accuracy. Start to say

Sell training. Sell systems that manage training or resources. Sell hardware or software but don't tell me you sell 'learning'

Unfortunately, a lot of money in elearning comes from corporate training (or big system sold to education institutes) and everyone in the market is chasing after the money. LMS is a good example. The correct term should be "Learner management system". But it does not sound as good as "Learning" management system. So the marketing people decides to use the latter - which is absolutely abuse of language.

Since when we started hearing about ROI in training - when big business (and the managers who supported the buying of training) needs to justify the cost to their boss who has no idea of what is learning. ROI is coined and given numbers - artificial numbers.

If we want to continue to sell to business for their training dollars, unfortunately, the word "learning" will coninue to be abused.

Constructive Alignment

From the website:

Constructive Alignment, a term coined by John Biggs (Biggs, 1999) ... is the underpinning concept behind the current requirements for programme specification, declarations of Intended Learning Outcomes (ILOs) and assessment criteria, and the use of criterion based assessment.

A short film on the approach is here

Learn by mistakes?

Should we encourage learning by mistakes? Case in point is sex education in secondary schools.

We do not teach our children to drive by allowing them to crash our cars. We only focus on making sure that they drive responsibly and correctly.

But when it is about human interaction and relationship, we are dealing at two levels: the social and actions. Building human relationship (marriage in particular) is not only about action (making love), it is more about understanding and enjoying the company of another human being.

Sex education seems to focus on "action" and taking precaution by talking about "protected sex". IS that encouraging "learning by mistakes"? Is that safe?

GeoGebra

From the website:

GeoGebra is a dynamic mathematics software for education in secondary schools that joins geometry, algebra and calculus.

On the one hand, GeoGebra is a dynamic geometry system. You can do constructions with points, vectors, segments, lines, conic sections as well as functions and change them dynamically afterwards.

On the other hand, equations and coordinates can be entered directly. Thus, GeoGebra has the ability to deal with variables for numbers, vectors and points, finds derivatives and integrals of functions and offers commands like Root or Extremum.

These two views are characteristic of GeoGebra: an expression in the algebra window corresponds to an object in the geometry window and vice versa.

I would characterise the website as a tool for creating visualisation of mathematical equations. :-)

See examples and an article Creating Mathlets with Open Source Tools

Salt Water as Fuel?

This is too good to be true, but if it is true, it will really the greatest break through.

From the video, I understand that the burning is triggered by "radio frequency radiation" and can achieve a high temperature. There is ONE important point that has not been explained in the video: how much energy was used to producing the radio frequency wave and how much energy was generated as a result? The ability to produce high temperature is NOT the same as the ability to produce energy. Just like ability to produce potential difference "voltage" is not the same as electrical power.

Why re-invent the wheel

Here are two good reasons:

Bullshit- a 10-minute study

Inspired by Doug Johnson's BS Bingo

Bullshit, I scored myself on the first line of the BS Bingo.

[photo from I Me My]

One of my publicly documented Bullshits: Nano-learning (n-learning) is the future

If you are ready to pay $9.95, here is a book "On Bullshit" by Harry G. Frankfurt published by Princeton University Press.

Here are a few additional choices from Amazon for your BS pleasure:
Your Call Is Important To Us : The Truth About Bullshit
The Dictionary of Bullshit
The Business of Bullshit
Bullshit and Philosophy

OK, this is a subject that is too wide to study in only 10 minutes. Please look forward to a more detailed study report later.

Educating our kids out of their survival kit

The following two items get me thinking:

Law to increase activity eliminates recess at some schools
Not News: Our kids are fat. News: New law increases amount of physical education to 150 minutes per week in elementary schools. [source]

Do schools kill creativity?

The first item sends chills through my back. If school systems are managed like those described in the first article, the children will grow only into non-thinking ... slave.

The second item gives me hope and inspiration. A good analysis of current education system.

Please implement the ideas given by Ken Robinson!

Make a pocket LED cube

3x3x3 cube of LEDs programmable to light up anyone you like - even in an animation!

A Giraffe is Born

The power of information has totally changed the role of teachers. Today, teachers are no longer is the gatekeeper of information. We should focus on helping our students to find and make sense of the information available.

Hydraulic robotic arm

via Gizmag

The robotic arm introduces kids to hydraulics in a fun and dynamic way that requires no batteries or external power source. By pumping the arm to generate energy it can then grab, move, lift and stack.

Physics as shown in movies

Here are some examples of the "gross scientific inaccuracies in the cinema world". See also

A fun project for the students would be to find and discuss such inaccuracies.

How to Learn More and Study Less

by Scott Young

The article gives a lot a good suggestions to be an effective learner.

Here is my view on the same subject:

Study is input. Learning is output.

Just spending time taking in information is NOT the best way to learn. Learning is action you can do AFTER taking in information.

In the how to boost your study habits section of the article:

Metaphor - The heart of holistic learning is relating things together. Metaphors are literary devices that link two things that normally don’t go together.

Ten Year Old Rule - Explain ideas to yourself as you would to a ten year old.

Trace Back - Put away your books and start with a random fact or concept. Then relate that idea to another concept in your subject.

Write - Take a piece of paper and write out the connections in the information. Reorganize the information into different patterns. The key here is the writing, not the final product.

Out of the 7 habits, 4 is about output. You can definitely find out more way of OUTPUTing to order to learn more effectively. Blog is another way. :-)

Google Earth Flight Simulator

by Marco Gallotta

A flight simulator has been embedded in the latest version of Google Earth. Here is what Marco has found out:

First of all you'll have to install the latest version of GE. Once you've started it all up, explored Google Sky a bit, then all you have to do is hit Ctrl+Alt+A (if you're running OS X it's Command+Option+A).

The information page of the control is here.

USA as the most powerful nation in the world - how long will it last?

Not long.

China was weakened at the beginning of the last century because of its closing of borders - thinking that she has already got everything her people need. Leadership problem! Before that, China was the strongest country in the world because of her more advanced technology ("advance" is always a comparative term.)

At the beginning of this century, China is the world's fastest growing economy AND continues to reduce her population through tight (although unwelcome) birth control. (Compare with India for example who will be continuously hindered by its population demands.)

While education levels in China is still small compared with developed countries, China produces more PhD in science and technology than USA. It is just a matter of time for China to become more inventive and catch up in its scientific and technological achievements.

I based on these two observations to draw the conclusion in the last paragraph:
1. People in USA are still blinded to believe that there is a GOD. (See Polling Data on Science and Religion) Bible is just a fiction, written by some "men" centuries ago (may be with motivations unknown to us today). Even the Pope will get sick and ill. Only medicine can help. Prayers will not do anything. The real miracles are SCIENCE.
2. The urge of Chinese people to get education.

USA policy continues to drain the wealth of its people into a few rich people's pockets (Listen to some of speeches by Noam Chomsky, e.g. the world after Iraq invasion). Bad health care system (see Michael Moore's moive SICKO).

Welcome to the China Century.

IGoogle’s New Gadget-to-Gadget Communication

Back in 1997, I was experimenting "virtual apparatus framework" in order to allow "components" on a page to communicate among themselves. [see also]. I faced great technical difficulties and unstable "live connect" implementations in various browsers.

10 years later, Google is calling "virtual apparatus" iGoogle gadgets and they are trying to enable these gadgets to publish and listen (one-way communication) and only limited from type="html" and type="html-inline" gadgets. I don't know what that means because I did not have time to really look into iGoogle gadgets.

An obvious hurdle will be allowing gadgets hosted from different domains to communicate - that "cross domain scripting" security model!

Social Facts and Social Agreements

Ton Zijlstra wrote:

That George Bush is the US President, or Beatrix of Orange-Nassau is the Queen of the Netherlands is a social fact not an objective one. It is something we merely generally agree upon to be true (even those opposing monarchy, or those thinking Bush never beat Al Gore). We all behave like it is true. If we would stop that, it would indeed seize to be true.
Money systems, number and measures systems, religious belief systems etc. are social facts too. They're designed. They can be changed by groups simply stopping to accept them. Social facts are the emperor's new clothes. Social facts are the product of multi-subjectivity. We pretend that social facts are objective facts.

I would argue otherwise. That George W. Bush is the US President is a social agreement (between George W. Bush and people of USA) via a mechanism called election. USA people has agreed to give George W. Bush, until the next election, the power to execute some rights on behalf of the people.

Measurement units are also social agreements, negotiated agreements among international standards bodies in order to smooth the transactions of trade.

These social agreements can change, in fact they do change. However, these social agreements ARE not facts.

The statement "Jeanny is my wife" is a fact, a social fact. We married, in front of our parents, relatives, friends and so on. Of course, on the other hand, it is also a social agreement. If someday in the future, we get devoiced. The fact that she was my wife for these years remain as a fact and is true. The agreement part has changed!

With this, objectivity is NOT multi-subjectivity.

The statement "the earth is round" is a fact until proven wrong by scientific evidence. It is NOT negotiated among people inhibiting on Earth. Fact can be proven wrong and get revised. However, facts do not require social agreement to establish its validity. It is NOT multi-subjectivity.

National Computing Studies Summit

From the website:

IT Teachers Summit: Open Learning Approaches to Computing Studies
Date: 4th - 5th October 2007
Venue: Australian Science & Mathematics School (ASMS) and online from wherever teachers are located.
To register visit: www.acce.edu.au/item.asp?pid=1214

Summit goals
- Identify educators who are working is distance education / open learning activities in Computing Studies and person(s) from other disciplines who have had success in alternative program models or who are experts at online and open learning pedagogies.

- Identify, analyse and share models for open learning which best suit teaching and learning which best suit teaching and learning in senior secondary Computer Studies.

- Establish and support open learning communities by identifying schools and teachers that are interested in promoting exemplary practice in open learning in senior secondary Computing Studies.

- Assist SiMERR to identify research and project opportunities.

- Provide a focus for the activities of CEGs on Computer Studies in rural and regional areas.

- Share and learn from the experiences of the state and territory projects.

- Develop recommendations about the future of open learning in Computing Studies and the role of CEGs.

Going to school in the "entertainment park" way

The original title is "Kids ride a zip line to go to school".

Basically, the kids bring their own pulleys and a fork from a tree (as brakes) to "slide" down a steel wire 1200 feet above the gorge. WOW!

Blog games

At EnRole blog, we have been playing an edublog game for the last few weeks.

EduBlog game is a game played in a BLOG environment for educational purposes.

The whole process (flow) can be read from the URL linked to this post's title.

The final result was in. I like the long list of verbs:

absorbing, asking, blending, cruising, connecting, considering, constructing, conversing, discussing, experiencing, fantasising, interacting, networking, participating, posting, reading, reflecting, thinking and sharing.

ePaper & other technology

I have great hope of ePaper and similar technology to one day really support "paperless" office. I know how much I like to read from a book instead of a monitor. Among the reasons that reading from book is better are:
1. more comfortable reading. Paper uses reflective light verses monitor's emitting flashing light.
2. no energy is consumed while reading whereas monitors continue to consume energy even when the information on the screen is not changing.
3. form-factor. Books are so much lighter and friendly.
.... [and the list can continue]

Then comes ePaper, a promise of flexible, reflective, non-energy consuming when not changing content technology. There are two basic versions of ePaper, [from wikipedia]

Electronic paper was first developed in the 1970s by Nick Sheridon at Xerox's Palo Alto Research Center. The first electronic paper, called Gyricon, consisted of polyethylene spheres between 20 and 100 micrometres across. Each sphere is composed of negatively charged black plastic on one side and positively charged white plastic on the other (each bead is thus a dipole[1]). The spheres are embedded in a transparent silicone sheet, with each sphere suspended in a bubble of oil so that they can rotate freely. The polarity of the voltage applied to each pair of electrodes then determines whether the white or black side is face-up, thus giving the pixel a white or black appearance.[2]

In the 1990s another type of electronic paper was invented by Joseph Jacobson, who later co-founded the corporation E Ink which formed a partnership with Philips Components two years later to develop and market the technology. In 2005, Philips sold the electronic paper business as well as its related patents to Prime View International. This used tiny microcapsules filled with electrically charged white particles suspended in a colored oil.[3] In early versions, the underlying circuitry controls whether the white particles were at the top of the capsule (so it looked white to the viewer) or at the bottom of the capsule (so the viewer saw the color of the oil). This was essentially a reintroduction of the well-known electrophoretic display technology, but the use of microcapsules allowed the display to be used on flexible plastic sheets instead of glass.

One of the limitation of ePaper is that it is monochromatic, ie single colour.

This is now changed. According to this website, they have come up with a method to display full spectrum of colour (not by mixing the three primary colours). This is an exciting news.

Google launches embeddable map feature

Two features of Google Map will definitely be used by innovative teachers once how to use them become available.

1. Embed maps directly into web pages, like youTube videos, by copy and paste a snippet of HTML.

To do this:

1. Navigate to the location you want to show on Google Map.
2. On the top right corner of the map, there is a [link to this page]. Click it to get a sniplet of HTML.
3. Copy and paste to your web page

Here is an example, the area I live in:

View Larger Map

2. My Map which allow users to define areas, add text or links.
[More on this when I have time.]