December 2, 2014

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The Conversation has a post suggesting traditional teaching methods may be the most successful.

Seventy teachers from the UK were sent to Shanghai to study classroom methods to investigate why Chinese students perform so well. Upon their return, the teachers reported that much of China’s success came from teaching methods the UK has been moving away from for the past 40 years.

The Chinese favour a “chalk and talk” approach, whereas countries such as the UK, US, Australia and New Zealand have been moving away from this direct form of teaching to a more collaborative form of learning where students take greater control.

Given China’s success in international tests such as PISATIMSS and PIRLS, it seems we have been misguided in abandoning the traditional, teacher-directed method of learning where the teacher spends more time standing at the front of the class, directing learning and controlling classroom activities.

Debates about direct instruction versus inquiry learning have been ongoing for many years. Traditionally, classrooms have been organised with children sitting in rows with the teacher at the front of the room, directing learning and ensuring a disciplined classroom environment. This is known as direct instruction. …

 

 

Wired reports on a diesel powered airplane that may be produced in China.

If you’re the kind of person that tends to notice these things, a fair weather weekend stroll in any Chinese city or town lacks a distinct sound: the buzzing of light propeller aircraft in the sky. Outside the commercial and military realms, aviation is strictly limited, and private citizens who just want to take to the air have few options. That’s problematic, since booming growth in the country’s airline industry has generated a need for pilots, and it’s easier to recruit when you’ve got a population of men and women who already know how to fly.

Perhaps the biggest issue is that the majority of Chinese airspace is controlled by the military, and thus hard to access. Any fix on that front would come from the government (and rumor has it an overhaul is in the works), but a new plane from American-Chinese company Mooney could help address the other problems that are holding back Chinese aviation.

One problem is that airplane fuel is not only in limited supply, it’s extremely expensive—about double what it costs in the US. That makes training pilots costly and impractical (many learn to fly outside the country) in a place where flying even with a license is tricky. The Mooney M10, announced at China’s Zhuhai Airshow earlier this month, gets around that problem: It’s a diesel.

“Avgas is really hard to find in Asia” and it’s very expensive, says Peter Claeys, Mooney’s head of sales and marketing for China and a longtime champion of general aviation (the official term for civilian, non-commercial flight) in the region. Only one refinery in mainland China makes high octane low lead avgas, and delivery needs to be arranged ahead of time. It can cost more than $4 per kilogram (about $15 a gallon). Prices in the US—where fuel is also a cinch to find—fluctuate, but are often about half of what the Chinese pay.

Diesel engines have been around for more than a century but are a recent addition to the light airplane world. …

 

 

WSJ with a discussion of the efficacy of electric cars.

Electric cars have been the future of transportation for nearly a century, and despite a flock of new entries, the battery-powered segment of the auto market remains a narrow niche.

Few transportation technologies provoke as much debate as electric vehicles. Fans love them for performance—a well-designed electric car can accelerate faster from a stop than many a muscle car—as much as for cleanliness. Skeptics ask why they should pay a premium or subsidize tax breaks for cars with limited range and utility.

In the discussion that follows, Andrew Tomko, Alex Venz and Margaret Burgoon make the case for EVs. Mr. Tomko, 52, an English professor at Bergen Community College in Paramus, N.J., owns an electric Fit subcompact from Honda Motor Co. Mr. Venz, 29, and Ms. Burgoon, 28, who are married, bought a Nissan Motor Co. Leaf two years ago. She’s an electrical engineer, he’s a technology consultant and photographer. They live in Lancaster, Calif.

University of Michigan Prof. John DeCicco presents the skeptic’s view. Prof. De Cicco developed an environmental scorecard and was a senior fellow for automotive strategies at the Environmental Defense Fund from 2001-2009.

Prof. DeCicco says at best he foresees a future market for electric vehicles as small, automated cars in densely populated urban areas. But even that is “pretty far away,” he says. …

 

 

And Real Clear Politics has an item on the future of cars with or without batteries.

Elon Musk, founder and CEO of Tesla, has done what GM couldn’t when, 20 years ago, EV1 was introduced as the first (failed) mainstream, all-electric car. Tesla has moved electric vehicles (EVs) from cult to elite status. Seductively designed and impressively engineered, the nearly $100,000 Tesla is a must-own for one-percenters.

Could Tesla, in particular, with its to-be-released cheaper plug-in sedan, along with the other dozen major EV manufacturers, be the portent of an automotive revolution that finally displaces the vilified internal combustion engine? Or has Musk created—no small feat—a modern Maserati? (The latter celebrates its centennial on December 1, 2014.) At present, the wisdom of the stock market gives Tesla a value approaching that of GM, which produces as many cars in a week as Tesla does in a year.

One thing is certain about the future of personal transportation: People like it. So, in two decades, there will be 1 billion more cars on the road, up from today’s 800 million. Even in America there will be more cars. It turns out that the notion that bicycle-loving millennials eschew cars is wrong; the downturn in auto ownership breathlessly flagged by New Economy mavens turns out to have, instead, been about money. As the Great Recession slowly recedes, millennials are buying cars and surveys show they want them roughly as much as their boomer parents did. (Different styles to be sure, but there’s no evidence they’d prefer to bike, hitchhike, take the bus or walk.)

For Tesla’s aspirational acolytes, however, the future is obviously one where most cars will depend on batteries of electricity, not barrels of oil. Is this likely? …

 

 

From Discovery we learn about Nicaragua’s new cash crop – tarantulas.

His corn and bean fields ravaged by drought, Nicaraguan farmer Leonel Sanchez Hernandez grudgingly found a new harvest: tarantulas.

He gets a little over a dollar for each of the hairy critters, which breeders sell overseas as pets.

His take may not be much, but in Nicaragua, a dollar buys a kilo of rice or a liter (quart) of milk. And in just two weeks, Sanchez Hernandez, his aunt Sonia and cousin Juan caught more than 400 of the spiders.

The hunt is playing out in northern Nicaragua, which suffered severe drought from May to September. Sanchez Hernandez’s fields were a total loss.

The 27-year-old was skittish at first about poking around in underground nests, under rocks and in tree trunks in search of the feisty arachnids.

But he donned thick gloves and mustered up the courage, because the alternative was to see his family go hungry.

“It is the first time we have gone out to look for tarantulas. We were a bit afraid, but we sucked it up and did it because of the drought,” … 

 

 

Late Night Humor from Andrew Malcolm.

Conan: Justin Bieber has reportedly met with a rabbi to explore Judaism. After confering with Justin Bieber, the rabbi is exploring atheism.

Meyers: Justin Bieber will reportedly spend the next two weeks with a pastor to learn how to spread the word of God. “It won’t be easy, but I think it will make me a better person,” said the pastor.

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