Showing posts with label education. Show all posts
Showing posts with label education. Show all posts

Tuesday, July 5, 2016

Decoded Neurofeedback

http://www.dailymail.co.uk/sciencetech/article-3674896/Is-real-life-Inception-Scientists-trick-people-seeing-colours-not-really-there.html

Is this real life 'Inception'? Scientists use unnerving trick to plant false experiences into people's brains


  • Research looks at how to 'induce' knowledge through the visual cortex
  • In new study, the group were able to train volunteers into seeing colours
  • Participants thought they saw colour red when looking at vertical stripes
  • This technique could be used for education or therapeutic reasons

The idea that people can interfere with others' thoughts and implant things in their minds was made famous by the 2010 film 'Inception'.

But the concept is not completely science fiction, according to a group of researchers at Brown University.
The scientists have discovered a way to implant associations in people's brains, without the subjects being aware of it happening.
With volunteers in the scanner, the patterns of activity in two areas of the brain were first measured when the subjects saw different combinations of coloured backgrounds (red, green and grey) behind two different stripe orientations (vertical and horizontal)
With volunteers in the scanner, the patterns of activity in two areas of the brain were first measured when the subjects saw different combinations of coloured backgrounds (red, green and grey) behind two different stripe orientations (vertical and horizontal)

WHAT IS THE TECHNIQUE? 

The process is called Decoded Neurofeedback, or 'DecNef'.
The idea for neurofeedback technique grew out of research from the 1960s showing that a person could regulate his heart rate or temperature just by thinking about it.
Because our brains regulate temperature and heart rate, the researchers wanted to see if we could also regulate other aspects of brain activity.

Working with colleagues in Japan, scientists at Brown University have been studying how a functional magnetic resonance machine (FMRI) can 'induce' knowledge in someone through their visual cortex by sending signals that change their brain activity pattern.

This process is called Decoded Neurofeedback, or 'DecNef'.
In a recent breakthrough, the group used a new technique to surreptitiously train a small group of volunteers to associate vertical stripes with the colour red and horizontal stripes with the colour green.

The people taking part thought they were seeing the colour red when looking at black and white stripes, and had no idea this was happening.  
The idea that people can interfere with others' thoughts and implant things in their minds was made famous by the 2010 film 'Inception' (pictured). But the concept is not completely science fiction, according to a group of researchers at Brown University

HOW THE STUDY WORKED 

With volunteers in the scanner, the patterns of activity in two areas of the brain were first measured when the subjects saw different combinations of coloured backgrounds (red, green and grey) behind two different stripe orientations (vertical and horizontal).

This data was used to encode a 'classifier' that could distinguish between red and green - to recognise the brain activity the volunteers induced in those areas in future experiments.

Over three days of training, looking at disks with vertical and horizontal stripes. volunteers were asked to think of a variety of ways they might use their brains to enlarge a disk they were looking at.

But in reality the disk only got larger, and the participants were given a higher 'score', when the classifier saw signs they were thinking of the colour red.
The 12 volunteers were really being trained so that after seeing vertical stripes they would induce activity patterns in V1 and V2 similar to the activity that had occurred when they actually saw red.
After three days of training, participants were trained into seeing red when they saw vertical stripes.

'This is the first clear study that shows that V1 and V2 are capable of creating associative learning,' said Professor Takeo Watanabe, corresponding author of the paper published in the journal Current Biology.

The idea for neurofeedback technique grew out of research from the 1960s showing that a person could regulate his heart rate or temperature just by thinking about it. 

Because our brains regulate temperature and heart rate, Professor Watanabe wanted to see if we could regulate other aspects of brain activity. 

'Participants were not aware of the purpose of the experiment or what kind of activation they learned to induce,' Professor Watanabe said.

After the experiment, the researchers asked the subjects what they were thinking about when they got high scores.

'I imagined a zebra,' said one participant, reported Stat News.

'I imagined a gymnastics match in which I performed well,' 'I imagined a situation where I behaved violently,' others reported.

The idea for neurofeedback technique grew out of research from the 1960s showing that a person could regulate his heart rate or temperature just by thinking about it. Because our brains regulate temperature and heart rate, Professor Watanabe (picutred) wanted to see if we could regulate other aspects of brain activity
The idea for neurofeedback technique grew out of research from the 1960s showing that a person could regulate his heart rate or temperature just by thinking about it. Because our brains regulate temperature and heart rate, Professor Watanabe (picutred) wanted to see if we could regulate other aspects of brain activity

The participants were not hallucinating the color red, Professor Watanabe said. Instead their experiences were more similar to synesthesia, a condition in which people perceive coloors when they look at printed numbers and letters.
Associative learning and memory, the idea that 'this goes with that',  is pervasive in the brain.

But it was a novel finding of basic brain science to show that it can occur in early visual areas, Professor Watanabe said.
Professor Watanabe said he is eager to find out if scientists can use the study's technique of training subjects with (unwitting) MRI-based feedback to create associations in other parts of the brain for educational or therapeutic reasons.
'Our brain functions are mostly based on associative processing, so association is extremely important,' Professor Watanabe said. 'Now we know that this technology can be applied to induce associative learning.' 

Wednesday, March 23, 2016

brain signals for learning

http://www.hrl.com/news/2016/0210/



http://www.express.co.uk/news/science/654714/Education-of-the-future-Scientists-figure-out-how-to-UPLOAD-knowledge-to-the-brain

Education of the future? Scientists figure out how to UPLOAD knowledge to the brain

A GROUP of scientists claim to have created a simulator which can upload knowledge directly to your brain.


In a breakthrough which promises new technology like that from The Matrix, researchers at HRL Laboratories have developed a programme which they say can upload new skills and knowledge directly to your brain.

The California-based institution analysed electrical signals in the brain of a pilot and fed the data to people who didn’t have the knowledge to fly planes via electrode-embedded head caps which stimulated the correct regions of the brain.

The participants who were fed the information via electrodes were then pitted against a placebo group on a realistic flight simulation test, which found that the former performed an average of 33 per cent better than the latter, according to the results published in the journal Frontiers in Human Neuroscience.

Lead author Dr Matthew Phillips explained: “Our system is one of the first of its kind. It's a brain stimulation system.

"It sounds kind of sci-fi, but there's large scientific basis for the development of our system.

"The specific task we were looking at was piloting an aircraft, which requires a synergy of both cognitive and motor performance.

"When you learn something, your brain physically changes. Connections are made and strengthened in a process called neuro-plasticity.

“It turns out that certain functions of the brain, like speech and memory, are located in very specific regions of the brain, about the size of your pinky.”

He added that this could be the future of learning: “What our system does is it actually targets those changes to specific regions of the brain as you learn.
“The method itself is actually quite old. In fact, the ancient Egyptians 4000 years ago used electric fish to stimulate and reduce pain.

“Even Ben Franklin applied currents to his head, but the rigorous, scientific investigation of these methods started in the early 2000s and we're building on that research to target and personalise a stimulation in the most effective way possible.

“Your brain is going to be very different to my brain when we perform a task.

"What we found is … brain stimulation seems to be particularly effective at actually improving learning.”

While scientists may have figured out how to upload knowledge to a brain, a Russian billionaire is working on uploading his brain to a computer.

Dmitry Itskov has said he will make it possible for humans to live forever in the next 30 years by connecting human brains to computers.

Friday, January 15, 2016

hormone increases life span 40%

http://www.dailymail.co.uk/health/article-3400205/Have-scientists-discovered-elixir-youth-Hormone-extends-lifespan-40-protecting-immune-against-ravages-age.html
  • FGF21 is produced by the thymus gland and extends lifespan by 40%
  • Scientists discovered it protects the immune system from effects of age
  • Hope it could help treat elderly, obesity, cancer and type 2 diabetes 

Wednesday, May 27, 2015

Elon Musk's private school

from Slashdot.org:

Elon Musk has established "Ad Astra," a small, private school for grade-school-age kids. His goal for the school is to eliminate actual differences between the grades. The school had only 14 students for the past year, but will likely expand to 20 next September. Musk says, "It's important to teach problem solving, or teach to the problem and not the tools." As an example, he says teaching kids about tools should be more about taking an engine apart and learning about neccessary tools as the need arises, rather than just dumping information on them about a bunch of tools in an abstract way. "Musk's approach to delete grade level numbers and focus on aptitude may take the pressure off non-linear students and creates a more balanced assessment of ingenuity."

Friday, May 17, 2013

Brain Stimulation Can Boost Math Skills

http://www.medicalnewstoday.com/articles/260695.php

Administering high-frequency electrical noise to the brain can actually boost math skills up to six months later, according to a small study at the University of Oxford.

The finding was published in the journal Current Biology and outlines a technique that consists of placing electrodes on the scalp of the head and administering random electrical noise to stimulate parts of the brain - causing nerve cells to fire. During this study, the electrodes were placed on the head to aim at hitting regions of the brain known to be involved in doing math.

This technique is known as transcranial random noise stimulation (TRNS) and is painless, non-invasive, and inexpensive. The researchers developed the current study to examine whether TRNS given while performing the mental math tasks each day had an effect.

The researchers asked 51 Oxford students to complete two math tasks over a five-day time frame that analyzed their ability to conduct calculations in their head and learn math facts quicker by heart. There were 25 volunteers in the main experiment and 26 in the control experiment.

Dr Roi Cohen Kadosh of the Department of Experimental Psychology at the University of Oxford, who led the research, said:

'We found that with just 5 days of TRNS-accompanied cognitive training, we were able to bring about long-lasting improvements in cognitive and brain functions. Our neuroimaging results suggested that TRNS increases the efficiency with which stimulated brain areas use their supplies of oxygen and nutrients."


The study was small-scale and is not something that should be replicated at home, because of the possibility of harm. More research is needed to determine how this method may be used in the future.

Dr. Cohen Kadosh believes the current findings are a stepping stone to a line of research to determine whether the results can be repeated in larger and more diverse groups of people. He explains:

"If experimental results continue in this positive direction, we hope that these painless, safe and cheap non-invasive stimulation techniques will one-day be used in the clinic, classrooms and even home to help those who struggle with certain cognitive tasks. This could include anyone from a child falling behind in his/her maths class to an elderly patient suffering from neurodegenerative disease."


How TRNS stimulates the firing of individual neurons in the brain is still a mystery. Some believe that TRNS boosts the synchronization in firing of neurons in the area of the brain that receives the stimulation.

To date, studies have shown TRNS to be harmless physically. This technique is part of a category known as transcranial electrical stimulation (TES) that has been proven to positively affect a wide range of cognitive activities. The authors are hopeful for the outlook of TRNS.

The Oxford group has also previously revealed an additional type of brain stimulation known as TDCS, which may make people more efficient at learning and processing new numerical symbols. However, there may be some side effects regarding other cognitive functions with this method.

In the current study, the investigators did not see negative aspects of TRNS in other non-mathematical tasks. TRNS did not impact performance positively or negatively in these tasks.

Dr. Cohen Kadosh concludes, 'It is very important that future work in this field makes an effort to identify any downsides of TES, and ensure that the boosting of one cognitive ability does not come at the expense of another."

Written by Kelly Fitzgerald
Copyright: Medical News Today

Friday, July 20, 2012

Subconscious password

Unbreakable crypto: Store a 30-character password in your brain’s subconscious memory

By
http://www.extremetech.com/extreme/133067-unbreakable-crypto-store-a-30-character-password-in-your-brains-subconscious-memory


A cross-disciplinary team of US neuroscientists and cryptographers have developed a password/passkey system that removes the weakest link in any security system: the human user. It’s ingenious: The system still requires that you enter a password, but at no point do you actually remember the password, meaning it can’t be written down and it can’t be obtained via coercion or torture.

The system, devised by Hristo Bojinov of Stanford University and friends from Northwestern and SRI, relies on implicit learning, a process by which you absorb new information — but you’re completely unaware that you’ve actually learnt anything; a bit like learning to ride a bike. In short, the system teaches the password to a part of your brain that you cannot physically access — but it is still there in your subconscious, just waiting to be tapped.

The process of learning the password (or cryptographic key) involves the use of a specially crafted computer game that, funnily enough, resembles Guitar Hero (pictured below). There are six buttons — S, D, F, J, K, L — and the user has to hit the corresponding key (note) when the circle reaches the bottom (fret). During a typical training session of around 45 minutes, a user will make about 4,000 keystrokes — and here’s the genius bit: Around 80% of those keystrokes are being used to subconsciously teach you a 30-character password.
SISL implicit learning, via Guitar Hero
Before running, the game creates a random sequence of 30 letters chosen from S, D, F, J, K, and L, with no repeating characters. This equates to around 38 bits of entropy, which is thousands/millions of times more secure than your average, memorable password. This 30-character sequence is played back to the user three times in a row, and then padded out with 18 random characters, for a total of 108 items. This sequence is repeated five times (540 items), and then there’s a short pause. This entire process is repeated six more times, for a total of 3,780 items.

By this point, their experimental results suggest that the 30-letter password is firmly implanted in your subconscious brain. Authentication requires that you play a round of the game — but this time, your 30-letter sequence is interspersed with other random 30-letter sequences. To pass authentication, you must reliably perform better on your sequence. Even after two weeks, it seems you are still able to recall this sequence.
Bojinov's implicit learning SISL system, sequence advantage after 1/2 weeks
The most important aspect of this work is that it (seemingly) establishes a new cryptographic primitive that completely removes the danger of rubber-hose cryptanalysis — i.e. obtaining passkeys via torture or coercion. It also gives you deniability: If a judge or policeman orders you to hand over your password, you can plausibly say that you don’t actually know it. For a lot more information on the strengths and weaknesses of this cryptographic approach, called Serial Interception Sequence Learning (SISL) incidentally, hit up Bojinov’s research paper. Bojinov will present his findings at the Usenix Security Symposium in August.

With Black Hat, DEF CON, and the Usenix Security Symposium all taking place in the next few weeks, Bojinov’s SISL system is likely just the first of many awesome hacks that will emerge in due course. Last year saw the inaugural hacking of 4G and CDMA, opening car doors via SMS, and hacking wireless insulin pumps — and hopefully this year will be even better.

Friday, June 15, 2012

9-Year-Old Who Changed School Lunches Silenced, then Ban lifted By Politicians

 http://www.bbc.co.uk/news/uk-scotland-glasgow-west-18454800

A council has lifted its controversial ban on a nine-year-old girl taking photographs of her school meals.

Martha Payne, from Argyll, got more than two million hits on her NeverSeconds blog in just a few weeks.

Argyll and Bute Council said press coverage of the blog had led catering staff to fear for their jobs.
But council leader Roddy McCuish later told BBC Radio 4's World at One programme that he had instructed senior officials to lift the ban immediately.

He said: "It is a good thing to do, to change your mind, and I have certainly done that."
The council was widely criticised for the move, which had sparked a furious reaction on social media.
Local MSP Mike Russell, Scotland's education secretary, wrote to the council's chief executive in his capacity as local MSP, calling for the "daft" ban to be overturned.

Martha became an internet hit after she began publishing photographs of her Lochgilphead Primary School lunches on 30 April.

She gave each meal a 'food-o-meter' and health rating, and counted the number of mouthfuls it took her to eat it.

But in a post published on Thursday evening, Martha said her headteacher told her not to take any more photographs for the blog.

Under the headline "Goodbye", the post stated: "This morning in maths I got taken out of class by my head teacher and taken to her office. I was told that I could not take any more photos of my school dinners because of a headline in a newspaper today.

"I only write my blog not newspapers and I am sad I am no longer allowed to take photos. I will miss sharing and rating my school dinners and I'll miss seeing the dinners you send me too."
The council's decision to impose the ban came after the Daily Record newspaper published a photograph of Martha alongside chef Nick Nairn under the headline "Time to fire the dinner ladies.."
Charity blog
 
Martha had been using the blog - which she started with the help of her father Dave - to raise money for the Mary's Meals charity.

An explanatory note posted on the blog by her father read: "Martha's school have been brilliant and supportive from the beginning and I'd like to thank them all.
The decision, according to her father, was not taken by the school, which has been very supportive, but by the Argyll and Bute council.

It's not quite clear why - perhaps there is a ban on taking photos inside schools, or maybe there is some concern about the damage to the reputation of the school meals service.

I prefer to think there is another explanation - and that this is all a cunning plan by the councillors to draw attention to their beautiful region with its dramatic coastline, and fine cuisine.

It seems to be working - the case of the banned blog is rapidly becoming a cause celebre, with emails, tweets, and presumably phone calls arriving at council headquarters from around the world.
 
"I contacted Argyll and Bute Council when Martha told me what happened at school today and they told me it was their decision to ban Martha's photography.

"It is a shame that a blog that today went through two million hits, which has inspired debates at home and abroad and raised nearly £2,000 for charity is forced to end."

Mr Payne later told BBC Radio's Good Morning Scotland programme his daughter was not happy about the council's decision.

He added: "I can see that the photographs at the start didn't look the most appetising, but Martha marked the last school meal 10 out of 10.

"I understand that it's brought pressure from around the world and media interest, but that is really out of our control.

"But we are very supportive of the school - the fact that she has been encouraged to blog and she got permission to do this is testament to them.

"Everyone in the kitchens has been wonderful to Martha and she enjoys going into lunch every day."
In a statement released on its website, Argyll and Bute Council claimed media coverage of the blog had led catering staff to fear for their jobs.

It added: "The council has directly avoided any criticism of anyone involved in the 'never seconds' blog for obvious reasons despite a strongly-held view that the information presented in it misrepresented the options and choices available to pupils.

"However this escalation means we had to act to protect staff from the distress and harm it was causing.

If you had met with the staff at the school yesterday, the level of distress that was there - It was palpable. It was very significant for them. People were in tears”

Cleland Sneddon Argyll and Bute Council
 
"In particular, the photographic images uploaded appear to only represent a fraction of the choices available to pupils, so a decision has been made by the council to stop photos being taken in the school canteen.

"There have been discussions between senior council staff and Martha's father however, despite an acknowledgement that the media coverage has produced these unwarranted attacks, he intimated that he would continue with the blog.

"The council has had no complaints for the last two years about the quality of school meals other than one from the Payne family received on 6 June and there have been no changes to the service on offer since the introduction of the blog."

Cleland Sneddon, the executive director of community services at Argyll and Bute Council, told the BBC that school catering staff had been left "in tears" by press coverage.
He added: "Newspapers have a significant impact on public opinion. They have a significant impact on this particular staff group.

"If you had met with the staff at the school yesterday, the level of distress that was there - it was palpable. It was very significant for them. People were in tears. This was a culmination of a period of seven weeks of this level of coverage and we had to take some action to protect our staff."
However, Mr McCuish later told the BBC that he had instructed senior officials to lift the ban immediately.

Martha's blog was featured by media across the globe, with celebrity chef Jamie Oliver tweeting: "Shocking but inspirational blog. Keep going, big love from Jamie x."
Photo of Martha's school lunch Martha gave this cheeseburger a health rating of just 2/10
After hearing about the ban, Oliver tweeted on Friday morning: "Stay strong Martha" before urging his 2.3 million followers to retweet the message to show their support for the schoolgirl.
Martha had been raising money through a Justgiving page for the Mary's Meals charity, which helps feed some of the poorest children in the world.
Publicity caused by the ban helped her smash through her £7,000 target - with total pledges reaching more than £20,000 on Friday.

The total stood at only about £2,000 on Thursday evening.
A Mary's Meals spokesman said: "Martha's support for Mary's Meals has been amazing and we are extremely grateful for everything that she has done to help us reach some of the hungriest children in the world.

"We are overwhelmed by the huge response to her efforts today which has led to so many more people donating to her online donation page.

"Thanks to this fantastic support, Martha has now raised enough money to build a kitchen in Malawi for children receiving Mary's Meals as part of our Sponsor A School initiative and has broken the record for hitting a Sponsor A School online fundraising target in the quickest amount of time".
Among the pictures Martha published on her blog was one featuring her £2 lunch of a pizza slice, a croquette, sweetcorn and a cupcake.

Martha wrote: "I'm a growing kid and I need to concentrate all afternoon and I can't do it on one croquette. Do any of you think you could?"


http://m.wired.com/wiredscience/2012/06/neverseconds-shut-down/

For the past two months, one of my favorite reads has been Never Seconds, a blog started by 9-year-old Martha Payne of western Scotland to document the unappealing, non-nutritious lunches she was being served in her public primary school. Payne, whose mother is a doctor and father has a small farming property, started blogging in early May and went viral in days. She had a million viewers within a few weeks and 2 million this morning; was written up in Time, the Telegraph, the Daily Mail, and a number of food blogs; and got support from TV cheflebrity Jamie Oliver, whose series “Jamie’s School Dinners” kicked off school-food reform in England.
Well, goodbye to all that.

This afternoon, Martha (who goes by “Veg” on the blog) posted that she will have to shut down her blog, because she has been forbidden to take a camera into school. She said:
This morning in maths I got taken out of class by my head teacher and taken to her office. I was told that I could not take any more photos of my school dinners because of a headline in a newspaper today.
I only write my blog not newspapers and I am sad I am no longer allowed to take photos. I will miss sharing and rating my school dinners and I’ll miss seeing the dinners you send me too.
A little later, her father Dave (who helped her set up the blog but has been hands-off on the content), added to her post:
Veg’s Dad, Dave, here. I felt it’s important to add a few bits of info to the blog tonight. Martha’s school have been brilliant and supportive from the beginning and I’d like to thank them all. I contacted Argyll and Bute Council when Martha told me what happened at school today and they told me it was their decision to ban Martha’s photography.
Can we all agree how monumentally stupid this is?

Martha Payne, via JustGiving.com

Here we have a kid who got excited enough about feeding children well that she not only changed the food in her own district — within two weeks, officials were allowing children in her school to have “unlimited salads, fruit and bread,” which apparently was the policy all along only someone forgot to say so — but also got children around the world excited about their lunches too. Over the blog’s seven weeks, she received images of school lunches from Germany, Japan, Finland, Illinois, Spain, Washington State, a school in Atlanta that keeps kosher, and on.

And no, to stave off the inevitable snark, she’s not a bratty entitled kid. Here’s how we know: By her 19th post, she decided she’d gotten enough attention that she wanted to redirect it somewhere useful, and she asked her followers to donate to a charity called Mary’s Meals that funds school food in Africa. She started off the donations by sending £50 that she got from a magazine that reprinted some of her photos. By today, according to her father’s note, she had raised £2,000.

We anguish about getting kids to be enthusiastic about healthy, sustainable food — to not prefer the bad stuff, not waste the good stuff, and not be entitled little monsters who whine about when their next chicken nugget is arriving. And then a child emerges who, out of her own creativity and curiosity, does all of that, and gets other children around the world excited about doing it too. And then she gets told she is offending the powers that be, and is slapped down.

Those would be the powers who told a 9-year-old that she was making “bad choices” out of the food being served at her school, without ever taking responsibility for what they had allowed to be offered. (Which is not necessarily the norm for school lunches in Scotland, as this piece from the Daily Record makes clear.)

Infuriating.

If you’d like to tell the Argyll and Bute Council, who made the decision, exactly how idiotic they’ve been, their webpage is here. (And they are @argyllandbute on Twitter.)
If you’d like to send support to Martha, you can leave a comment on her final post. (Her email is on the same page.)

And if you’d like to honor her ingenuity by supporting the school-food charity she picked, the donation page is here.

(While I was writing this post, the news of the no-photography rule was posted by the Argyll News and the media site STV-Glasgow. The Argyll and Bute Council has not responded.)
Thanks @MJRobbins for flagging NeverSeconds’ goodbye post on Twitter.

Thursday, June 7, 2012

Graduate Degree For $100

Backed by Charles River Ventures:
http://www.crv.com/team

http://www.udacity.com/

company profile:
http://www.udacity.com/us

watch their careers video here:
http://www.udacity.com/careers/



 http://www.forbes.com/sites/georgeanders/2012/06/05/udacity-sebastian-thrun-disrupting-higher-education/

This story appears in the June 25, 2012 issue of Forbes Magazine.

Sebastian Thrun. Photo: Eric Millette for Forbes.

Ask Sebastian Thrun what makes him tick, and the inventor and Google Fellow ­offers up three favorite themes: big open problems, a desire to help people and “disrespect for authority.” Thrun, 45, has been aiming high—and annoying the old guard—for nearly two decades. As a college student in Germany he dashed off to conferences to present major papers on machine learning without getting his professor’s permission. Thrun made the cover of FORBES in 2006 with his talk of creating self-driving cars that could navigate traffic and follow directions without human guidance. As the founding head of Google’s advanced-research X Lab, Thrun helped turn those robocars into reality. After 200,000 miles of road tests his vehicles are safe enough for Nevada to approve them on public roads. California may follow suit.

Thrun has found a fresh challenge that excites him even more: fixing higher education. Conventional ­university teaching is way too costly, inefficient and ­ineffective to survive for long, he contends. He wants to ­foment a teaching revolution in which the world’s best instructors conduct highly interactive online classes that let them reach 100,000 students simultaneously and globally.


Financiers at Charles River Ventures have already pumped $5 million into Thrun’s online-ed startup, Udacity. “I like to back people who have disruptive ­personalities,” explains CRV partner George Zachary. “They create disruptive solutions.”
Udacity’s earliest course offerings have been free, and although Thrun eventually plans to charge something, he wants his tuition schedule to be shockingly low. Getting a master’s degree might cost just $100. After teaching his own artificial intelligence class at Stanford last year—and attracting 160,000 online signups—Thrun believes online formats can be far more effective than traditional classroom lectures. “So many people can be helped right now,” Thrun declares. “I see this as a mission.”

There’s a startup boom in online higher education, but nearly all of the players hope to advance by working within the system. EdX is a joint venture of Harvard and MIT. Coursera has backing from Stanford, the University of Michigan and the University of Pennsylvania. 2Tor, which has raised $90 million in venture capital, runs online graduate programs in business and nursing for the likes of the University of North Carolina at Chapel Hill and Georgetown. Such startups see benefits in teaming up with universities to ­decide what should be taught online, how to teach it and how to handle delicate issues such as grading, course credits, diplomas and anticheating safeguards.

Such careful collegiality is not the Thrun way. “It’s pretty obvious that degrees will go away,” Thrun says. “The idea of a degree is that you spend a fixed time right after high school to educate yourself for the rest of your career. But ­careers change so much over a lifetime now that this model isn’t valid anymore.”

So Udacity is charting its own path as a career academy for brainy people of all ages. Udacity’s offices are just a few hundred yards from Stanford, but they’re a world away from the school’s idyllic environs. Its open, barnlike work area has stained beige carpets, cheap desks and a Go board perched on a flimsy coffee table. Most of its 25 employees are video, graphics or software whizzes determined to make each second of online instruction as eye-catching and compelling as possible.

It currently offers 11 courses, for free, in subjects such as computer programming, statistics and mathematics, plus a robocar programmer’s workshop with Thrun himself. It rustles up some instructors from the likes of Rutgers and the state universities of Virginia and Utah. Other teachers are experts from industry. Faculty pay runs between $5,000 and $10,000 per course. Many of Udacity’s students are midcareer professionals who want to sharpen specific skills. Udacity later this year is expanding into the humanities. Thrun says the service will always have “a free path,” but the idea is eventually to charge for certificates or enhanced features such as chat.

It was only last year that Thrun seemed like a fast-track scholar thriving within academia. In eight years he rose from a Ph.D. student at the University of Bonn to a tenured post in Stanford’s computer science department (with a stint in between at Carnegie Mellon). “I was a popular professor,” Thrun says. “My teaching ratings were usually good. I could take complicated subjects and explain them in an entertaining way.”

Even so, professor Thrun privately knew something was wrong. In many of his classes students fared much worse on the midterm exams than he expected. He says he had fallen into the “lecturing trap,” in which the instructor looks brilliant and a handful of top-performing students create the appearance of a lively class—but most students aren’t keeping pace. Thrun needed a way to engage all students.

Down the road in Mountain View an obscure hedge fund analyst named Salman Khan was winning acclaim for his short math tutorials watched by millions on YouTube. At Stanford another computer science professor, Daphne Koller, was finding success by experimenting with ways to “flip” the classroom, covering lecture material as video homework while using scheduled class time to solve problems.

Thrun decided to apply new elements to a fall 2011 artificial intelligence class that he and Google research chief Peter Norvig cotaught at Stanford. They offered a free ­online version to the world, attracting 58,000 signups by August. After a burst of press coverage, enrollment tripled. Online dilettantes dropped out fast, but 23,000 committed learners finished the course. To Thrun’s delight many of them aced his exams. By Thrun’s tally he influenced more students through that single online course than he had in all his two decades of classroom teaching.

Thrun in January let the world know his full-time status at Stanford was over. The retreat evoked mixed feelings on campus. He had already surrendered tenure in March 2011 because his off-campus commitments (such as starting the Google Glass augmented reality program) claimed too many hours. Running Udacity is his main job now, though he has a 20% time commitment at Stanford as a research professor, guiding graduate students. He still works one day a week at Google, reporting to Sergey Brin.

Thrun lets his Udacity students know he is a Stanford professor, but he knows he can’t promote Udacity as a conduit to Stanford’s top professors. Doing his best to be diplomatic, Thrun in late May called his association with Stanford “fantastic.” Computer science department chair Jennifer Widom returned the courtesy, declaring herself “a big fan of Sebastian.” Still, tensions exist.


When Thrun started sketching out his online course in the summer of 2011, he briefly considered ways of offering some of Stanford’s cachet to the free online students. ­Stanford administrators shuddered. “We told Sebastian: ‘You really can’t do that,’” Widom recalled. So online students didn’t get a completion certificate with a Stanford ­insignia; they also didn’t get a sheet showing how their test scores compared with those of Stanford students.

Big-name universities are understandably loath to alter long-held procedures for course content, academic credit and faculty status. So be it, Thrun says. Udacity, still in its infancy, can write its own rulebook. Thrun’s philosophy of online teaching involves a nonstop barrage of online quizzes, one every two to five minutes, that become the centerpieces of each lesson. “You don’t lose weight by watching someone else exercise,” he says. “You don’t learn by watching someone else solve problems. It became clear to me that the only way to do online learning effectively is to have students solve problems.”

Sometimes a quiz will call for a quick calculation. Other times students must choose among options or create a line or two of computer code. Students’ entries can be automatically scored within seconds. A correct answer lets students move on right away; a faulty solution elicits an offer to try again.

Whimsy is a frequent visitor. In an introductory course on search engine techniques, instructor David Evans, a Virginia professor, explains network design by sketching a map of ancient Greece, with stylized little bonfires showing how primitive smoke signals helped spread the word that Agamemnon had returned from battle. Evans then asks ­students to identify ways that this long-ago network could be made to operate faster. Among the options: Zeus could increase the speed of light.
Thanks to a global boom in cheap, high-speed Internet connectivity, such courses can be beamed around the world for just 50 cents to $1 per student. That makes mass teaching much more affordable than it was a few years ago. Just as important, the rise of Facebook, Twitter and other social networks means that today’s students are comfortable forming multihour study groups with online acquaintances they’ve never met in the physical world.

Udacity’s engineers are learning which little things they need to get right. The company’s production studio carefully avoids full-body shots of professors lecturing; that makes for tiresome viewing. Instead, most footage consists of close-up shots of instructors writing out key lecture points on a digital tablet. Clever editing speeds up long words. When everything clicks, one instructor says, “it feels like a personal tutorial.”

Technique alone will carry Udacity only so far. Figuring out how to assess 100,000 people’s work in the humanities or social sciences will be a huge challenge. There, tough questions aren’t meant to elicit the same answer from everyone who knows the subject. Thrun has high hopes for peer-based grading, perhaps with a social-reputation score attached, so that classmates help identify their wisest peers. But such methods haven’t been tested yet.

Another roadblock: making sure that grade-obsessed students don’t cheat by swapping answers among friends or setting up lots of dummy accounts that they control. It’s an awkward secret of online education: People who crave an A can use multiple accounts to learn so much about course design that they can masquerade as geniuses when finally retaking the course under their own names.
Thrun’s decision to shake free of any direct ties to big-name universities could haunt him, too. Rival player Coursera is building up its course catalog faster, thanks to outspoken support from a variety of university presidents.

Still, Thrun likes his odds. “I love to throw myself into situations where I don’t understand everything yet,” he says. “That way I learn so much. Sometimes I fail, and sometimes I succeed. But the goal is to reemerge at the other end, doing something good.”

Saturday, June 2, 2012

Louisiana's bold bid to privatize schools


June 1 | Fri Jun 1, 2012 6:04pm EDT
 
(Reuters) - Louisiana is embarking on the nation's boldest experiment in privatizing public education, with the state preparing to shift tens of millions in tax dollars out of the public schools to pay private industry, businesses owners and church pastors to educate children.
Starting this fall, thousands of poor and middle-class kids will get vouchers covering the full cost of tuition at more than 120 private schools across Louisiana, including small, Bible-based church schools.

The following year, students of any income will be eligible for mini-vouchers that they can use to pay a range of private-sector vendors for classes and apprenticeships not offered in traditional public schools. The money can go to industry trade groups, businesses, online schools and tutors, among others.

Every time a student receives a voucher of either type, his local public school will lose a chunk of state funding.

"We are changing the way we deliver education," said Governor Bobby Jindal, a Republican who muscled the plan through the legislature this spring over fierce objections from Democrats and teachers unions. "We are letting parents decide what's best for their children, not government."

BIBLE-BASED MATH BOOKS
The concept of opening public schools to competition from the private sector has been widely promoted in recent years by well-funded education reform groups.

Of the plans so far put forward, Louisiana's plan is by far the broadest. This month, eligible families, including those with incomes nearing $60,000 a year, are submitting applications for vouchers to state-approved private schools.

That list includes some of the most prestigious schools in the state, which offer a rich menu of advanced placement courses, college-style seminars and lush grounds. The top schools, however, have just a handful of slots open. The Dunham School in Baton Rouge, for instance, has said it will accept just four voucher students, all kindergartners. As elsewhere, they will be picked in a lottery.
Far more openings are available at smaller, less prestigious religious schools, including some that are just a few years old and others that have struggled to attract tuition-paying students.

The school willing to accept the most voucher students -- 314 -- is New Living Word in Ruston, which has a top-ranked basketball team but no library. Students spend most of the day watching TVs in bare-bones classrooms. Each lesson consists of an instructional DVD that intersperses Biblical verses with subjects such chemistry or composition.

The Upperroom Bible Church Academy in New Orleans, a bunker-like building with no windows or playground, also has plenty of slots open. It seeks to bring in 214 voucher students, worth up to $1.8 million in state funding.

At Eternity Christian Academy in Westlake, pastor-turned-principal Marie Carrier hopes to secure extra space to enroll 135 voucher students, though she now has room for just a few dozen. Her first- through eighth-grade students sit in cubicles for much of the day and move at their own pace through Christian workbooks, such as a beginning science text that explains "what God made" on each of the six days of creation. They are not exposed to the theory of evolution.

"We try to stay away from all those things that might confuse our children," Carrier said.
Other schools approved for state-funded vouchers use social studies texts warning that liberals threaten global prosperity; Bible-based math books that don't cover modern concepts such as set theory; and biology texts built around refuting evolution.
TEACHERS WEIGH LAWSUIT
The U.S. Supreme Court has ruled that vouchers can be used for religious education so long as the state is not promoting any one faith but letting parents choose where to enroll their children.
In Louisiana, Superintendent of Education John White said state officials have at one time or another visited all 120 schools in the voucher program and approved their curricula, including specific texts. He said the state plans more "due diligence" over the summer, including additional site visits to assess capacity.

In general, White said he will leave it to principals to be sure their curriculum covers all subjects kids need and leave it to parents to judge the quality of each private school on the list.

That infuriates the teachers union, which is weighing a lawsuit accusing the state of improperly diverting funds from public schools to private programs of questionable value.

"Because it's private, it's considered to be inherently better," said Steve Monaghan, president of the Louisiana Federation of Teachers. "From a consumer perspective, it's buyer beware."

To date, private schools have not had to give their students state standardized tests, so there's no straightforward way for parents to judge their performance. Starting next year, any student on a voucher will have to take the tests; each private school must report individual results to parents and aggregate results to the state.

The 47-page bill setting up the voucher program does not outline any consequences for private schools that get poor test scores. Instead, it requires the superintendent of schools to come up with an "accountability system" by Aug. 1. Once he does, the system cannot be altered except by legislative vote.

White would not say whether he is prepared to pull vouchers from private schools that do poorly on tests.

He pointed out that many kids applying for vouchers are now enrolled in dismal public schools where two-thirds of the students can't read or do math at grade level and half will drop out before they graduate high school. Given that track record, he argues it's worth sending a portion of the roughly $3.5 billion a year the state spends on education to private schools that may have developed different ways to reach kids.

"To me, it's a moral outrage that the government would say, 'We know what's best for your child,'" White said. "Who are we to tell parents we know better?"

That message resonates with Terrica Dotson, whose 12-year-old son, Tyler, attends public school in Baton Rouge. He makes the honor roll, but his mom says he isn't challenged in math and science. This week she was out visiting private schools. "I want him to have the education he needs," she said.

The state has run a pilot voucher program for several years in New Orleans and is pleased with the results. The proportion of kids scoring at or above grade level jumped 7 percentage points among voucher students this year, far outpacing the citywide rise of 3 percentage points, state officials said.
Studies of other voucher programs in the U.S. have shown mixed results.

In Louisiana the vouchers are available to any low- to middle-income student who now attends a public school where at least 25 percent of students test below grade level.

Households qualify with annual income up to 250 percent of the poverty line, or $57,625 for a family of four.

Statewide, 380,000 kids, more than half the total student population of 700,000, are eligible for vouchers. There are only about 5,000 slots open in private schools for the coming year, but state officials expect that to ramp up quickly.

NO FISCAL ANALYSIS
Officials have not estimated the price tag of these programs but expect the state will save money in the long run, because they believe the private sector can educate kids more cheaply than public schools.

Whether those savings will materialize is unclear.
By law, the value of each voucher can't exceed the sum the state would spend educating that child in public school -- on average, $8,800 a year. Small private schools often charge as little as $3,000 to $5,000 a year.

Yet at some private schools with low tuition, administrators contacted by Reuters said they would also ask the state to cover additional, unspecified fees, which would bring the cost to taxpayers close to the $8,800 cap. The law requires the state to cover both tuition and fees.

In the separate mini-voucher program due to launch in 2013, students across Louisiana, regardless of income, will be able to tap the state treasury to pay for classes that are offered by private vendors and not available in their regular public schools.

White said the state hopes to spur private industry to offer vocational programs and apprenticeships in exchange for vouchers worth up to $1,300 per student per class. Students can also use the mini-vouchers to design their own curriculum, tapping state funds to pay for online classes or private tutors if they're not satisfied with their public school's offerings.

State officials will review every private-sector class before approving it. They are still working out how to assess rigor and effectiveness.

The state has not done a formal fiscal analysis, but public school advocates say subtracting the costs of vouchers from their budgets is unfair because they have the same fixed costs -- from utilities to custodial services -- whether a child is in the building four hours a day or six. White responds that the state is not in the business of funding buildings; it's funding education.

While public schools fear fiscal disaster, many private school administrators see the voucher program as an economic lifeboat.

Valeria Thompson runs the Louisiana New School Academy in Baton Rouge, which prides itself on getting troubled students through middle and high school. Families have struggled to pay tuition, she said, and enrollment is down to about 60 kids.

"We're a good school," Thompson said, "but we've been struggling fiscally."
The vouchers have brought in a flood of new applicants and the promise of steady income from taxpayers. Thompson enrolled 17 new students in two days last month and hopes to bring in as many as 130. "I'm so grateful," she said. "You can't imagine how grateful."

Sunday, March 18, 2012

TED-Ed

 http://www.washingtonpost.com/local/education/ted-offers-free-video-lessons-for-high-school-and-college-students/2012/03/09/gIQAuw5O6R_story.html
Imagine you’re a high school biology teacher searching for the most vivid way to explain electrical activity in the brain. How about inserting metal wires into a cockroach’s severed leg and making that leg dance to music?
Starting Monday, that eye-popping lesson, performed in a six-minute video by neuroscientist and engineer Greg Gage, is available free online.
TED, a nonprofit organization that produces a popular annual conference on ideas, is launching TED-Ed, an online collection of lessons it hopes will bring the best educators to any classroom with an Internet connection.
“Right now there’s a teacher somewhere out there delivering a mind-altering lesson and the frustrating thing is, it only reaches the students in that class,” said TED-Ed project director Logan Smal­ley. “We’re trying to figure out how to capture that lesson and pair it with professional animators to make that lesson more vivid and put it in a place where teachers all over the world can share it.”
TED-Ed is the latest wave in a growing trend of free online education. With offerings from the Khan Academy, founded in 2004 when Salman Khan began posting math tutorials on YouTube, and undergraduate courses from prestigious universities such as Yale and the Massachusetts Institute of Technology, free classes and lectures are proliferating on the Web.
But much of that content consists of sequential lectures delivered by an instructor behind a podium or, in the case of Khan, a disembodied voice narrating math equations on an electronic blackboard.
TED-Ed, by contrast, is using sophisticated animation, professional editing and high-quality production values to produce online lessons that are hard to forget. And the lessons don’t meander — each is no longer than 10 minutes.
The project does not provide a sequential curriculum but rather aims to provoke students and their teachers toward further exploration, the creators said. “We want to show that learning can be thrilling,” said TED curator Chris Anderson.
TED, which stands for Technology, Entertainment, Design, already maintains a vast library of free video talks from its annual conference aimed at adults, and it knows the magnifying effect of the Internet video. The site maintains about 1,100 videos at www.ted.com, which have been viewed more than 700 million times since the site was launched in 2006. The roster of hundreds of speakers includes many well-known figures such as Bill Clinton and the late Steve Jobs. But most were toiling in obscurity before TED put them in the spotlight.
Smalley points to the example of Hans Rosling, a Swedish expert in global health. Rosling estimates that in 40 years of lecturing and writing, his work reached about a million people. But Rosling has given eight TED talks over the past four years, which have been viewed about 6 million times, Smalley said.
“I’m really excited about this project because TED is such a good platform,” said Gage, the neuroscientist, who is based in Ann Arbor, Mich. He and a colleague, Tim Marzullo, perform neuroscience experiments in classrooms around Michigan and sell basic equipment through a Web site, Backyardbrains.com.
Gage said he wants the TED-Ed video to show teachers that they can conduct similar neuroscience experiments in their classrooms. “We hope people see this and realize that it’s really easy to do,” he said. “And that it’ll be a launching point for other experiments about the brain.”
Advertising is barred from the videos, and teachers appearing in them are not permitted to use them for commercial purposes. YouTube, which will host the videos, does carry some advertising. But if the video is shown via YouTube for Schools, a special network setting that restricts access to include only educational videos, no advertising will appear, according to Annie Baxter, a spokeswoman for YouTube.

Initially, TED-Ed lessons will be geared toward high school and college students and “life learners,” Smalley said.
The first batch of about a dozen videos are available Monday and will grow to about 300 within a year, Smalley said. TED-Ed is inviting educators and animators to submit ideas for lessons and will select and produce them, he said. The public can also nominate talented educators, Smalley said.
Teachers will not be paid for their ideas or for recording lessons for the videos.
Subjects are likely to include standard high school subjects such as math, science, social studies and English, but TED-Ed is open to unusual topics as well, Smalley said. “We’ll make sure it’s an even offering across traditional subjects, but we also want to offer things that aren’t taught in school but potentially should be,” he said.
Next month, TED-Ed will roll out a new Web site that will offer materials to teachers that are related to the videos, such as lesson plans and assignments. Teachers will be able to insert questions for their students into the videos and send their students links to annotated videos, a spokeswoman said.
A spokeswoman declined to discuss the budget for TED-Ed, except to say that the venture was a multimillion-dollar project.
Nearly 100 percent of U.S. public schools have access to the Internet, according to the National Center for Education Statistics. That compares with just 35 percent in 1994.