Why children struggle to read

Researcher Jennifer Buckingham writes:

Written English is a code. Once children learn the code, they can read almost any word. Some children learn to read without much formal teaching in phonics – these children are the minority. Most children need to be taught the code through phonics. Children who have not needed much phonics instruction to read well often need phonics to spell correctly. All children from all socioeconomic backgrounds benefit from good phonics instruction, but especially children who have not had the benefit of pre-school or a literacy-rich early home life.

I agree that phonics is important. But if English is a code, shouldn’t educators focus on making that code as simple and easy-to-learn as possible. English started as a phonetic language more than a thousand years ago, but subsequent evolution has introduced a myriad of complex spelling and grammatical rules that take children years to master.

Perhaps that is why education over-achievers Finland and South Korea enjoy such high rankings. Hank Pellissier at GreatSchools writes:

In 2006 the Programme for International Student Assessment (PISA) conducted a survey of 15-year-olds’ academic skills from 57 nations. Finland placed first in science by a whopping 5% margin, second in math (edged out by one point by Chinese Taipei), and third in reading (topped by South Korea)……Finnish and Korean languages are easy to read and spell; they don’t have the illogical phonetics of English.

Simplifying the structure of English phonetics would go some way to leveling the playing field.

Read more at Publications – Comment: First, become a good reader.

Masculinity and terror: the missing conversation

Prof. David Plummer argues that social changes have left a power vacuum that is open to exploitation:

Boys are spending more time in the sole company of their peers: on street corners, in shopping malls and in their cars.

Instead of growing up with the role models and standards of older, more experienced men, most of their role modelling comes from peer groups. In the absence of alternatives, these groups resort to raw physical masculinity as the yardstick for what masculinity should look like, how boys should behave and who should dominate.

They also develop their own rituals to admit members, some of which are extreme, anti-social and high-risk. It is a willingness to take risks that is considered the hallmark of a “real man”.

Read more at Masculinity and terror: the missing conversation.

The best way to teach kids math is not in a classroom – Quartz

By Wayne Kelsoe:

A narrowing of experience is happening in lower grades. My friend’s son was struggling with the concepts of area and perimeter, and his teacher expected each student to memorize “P = 2xL + 2xW” and “A=LxW” and take it from there. My friend took his son out to a tennis court with chalk and a tape measure. They measured the perimeter, walked around it, and marked each meter off with chalk. Then they marked off squares and counted them: how many in a row, how many rows and how many total. The lad returned to class with an indelible understanding of how to use perimeter to build a fence and area to buy carpet or paint. He didn’t need a formula because he had a physical concept….

The major task of early learning is to build a robust mind-bridge between the tangible, observable world and the symbolic world of words and numbers that we later use as a means of building more complex models.

Children are spending too much time in the classroom and not enough in the real world. Classroom learning tends to be one-dimensional compared to multi-dimensional reality. Activity-based learning through computer games may offer a partial bridge between the two.

Read more at The best way to teach kids math is not in a classroom – Quartz.

F. Scott Fitzgerald: The rules of life are written…

An insight into the mind of F Scott Fitzgerald, from Malcolm Cowley. Originally published in The New Republic on August 20, 1951.

Tender Is The Night was published in the spring of 1934…. It dealt with fashionable life in the 1920’s at a time when many readers wanted to forget that they had ever been concerned with frivolities; the new fashion was for novels about destitution and revolt….Nor was it a popular success as compared with Fitzgerald’s first three novels, which had been easier to write: in the first season it sold 12,000 copies; This Side of Paradise had sold 50,000 in a similar period. Presently the new book seemed to be forgotten, although it really wasn’t; it stayed in people’s minds like a regret or an unanswered question. “A strange thing is that in retrospect his Tender Is the Night gets better and better,” Ernest Hemingway told Maxwell Perkins, of Scribner’s, who was the editor of both novelists. In scores of midnight arguments that I remember, other writers discovered that they had the same feeling about the book.

Fitzgerald continued to brood about it, although he didn’t blame the public or the critics. It was one of the conditions of the game he played with life to accept the rules as they were written; if he lost point and set after playing his hardest, that was due to some mistake in strategy to be corrected in the future. He began looking for the mistake in Tender Is the Night….

Read how Fitzgerald re-wrote the novel at How F. Scott Fitzgerald Wrote and Revised Tender Is the Night | New Republic.

Rare mid-sized black hole

From NASA:

M82 X-1 is the brightest X-ray source in Messier 82, a galaxy located about 12 million light-years away in the constellation Ursa Major. While astronomers have suspected the object of being a midsize, or intermediate-mass, black hole for at least a decade, estimates have varied from 20 to 1,000 solar masses, preventing a definitive classification.

Working with Mushotzky and Strohmayer, UMCP graduate student Dheeraj Pasham sifted through about 800 RXTE observations of M82 in a search for specific types of brightness changes that would help pin down the mass of the X-ray source.

As gas streams toward the black hole it piles up into a disk around it. Friction within the disk heats the gas to millions of degrees, which is hot enough to emit X-rays. Cyclical intensity variations in these X-rays reflect processes occurring within the disk.

Scientists think the most rapid changes occur near the inner edge of the disk on the brink of the black hole’s event horizon, the point beyond which nothing, not even light, can escape. With such close proximity to the black hole, the effects of Einstein’s general relativity come into play, resulting in X-ray variations that repeat at nearly regular intervals…..

So that’s what happened to that stock I once bought on a hot tip 🙂

Read more at Rare Midsize Black Hole | Ritholz.com

This online school may replace modern liberal arts colleges | Quartz

Graeme Wood describes Minerva, challenging traditional education methods employed by liberal arts colleges:

The paradox of undergraduate education in the United States is that it is the envy of the world, but also tremendously beleaguered. In that way it resembles the US health-care sector. Both carry price tags that shock the conscience of citizens of other developed countries. They’re both tied up inextricably with government, through student loans and federal research funding or through Medicare. But if you can afford the Mayo Clinic, the United States is the best place in the world to get sick. And if you get a scholarship to Stanford, you should take it, and turn down offers from even the best universities in Europe, Australia, or Japan. Most likely, though, you won’t get that scholarship. The average US college graduate in 2014 carried $33,000 of debt.

Financial dysfunction is only the most obvious way in which higher education is troubled. In the past half millennium, the technology of learning has hardly budged. The easiest way to picture what a university looked like 500 years ago is to go to any large university today, walk into a lecture hall, and imagine the professor speaking Latin and wearing a monk’s cowl. The most common class format is still a professor standing in front of a group of students and talking. And even though we’ve subjected students to lectures for hundreds of years, we have no evidence that they are a good way to teach…

In recent years, other innovations in higher education have preceded Minerva, most famously massive open online courses, known by the unfortunate acronym MOOCs. Among the most prominent MOOC purveyors are Khan Academy, the brainchild of the entrepreneur Salman Khan, and Coursera, headed by the Stanford computer scientists Andrew Ng and Daphne Koller. Khan Academy began as a way to tutor children in math, but it has grown to include a dazzling array of tutorials, some very effective, many on technical subjects. Coursera offers college-level classes for free you can pay for premium services, like actual college credit. There can be hundreds of thousands of students in a single course, and millions are enrolled altogether. At their most basic, these courses consist of standard university lectures, caught on video.

But Minerva is not a MOOC provider. Its courses are not massive they’re capped at 19 students, open Minerva is overtly elitist and selective, or online, at least not in the same way Coursera’s are. Lectures are banned. All Minerva classes take the form of seminars conducted on the platform I tested. The first students will by now have moved into Minerva’s dorm on the fifth floor of a building in San Francisco’s Nob Hill neighborhood and begun attending class on Apple laptops they were required to supply themselves….

The Minerva boast is that it will strip the university experience down to the aspects that are shown to contribute directly to student learning. Lectures, gone. Tenure, gone. Gothic architecture, football, ivy crawling up the walls—gone, gone, gone. What’s left will be leaner and cheaper….. Yet because classes have only just begun, we have little clue as to whether the process of stripping down the university removes something essential….

Minerva will, after all, look very little like a university—and not merely because it won’t be accessorized in useless and expensive ways. The teaching methods may well be optimized, but universities, as currently constituted, are only partly about classroom time. Can a school that has no faculty offices, research labs, community spaces for students, or professors paid to do scholarly work still be called a university?

Read more at This online school may replace modern liberal arts colleges – Quartz.

Cigarette Butts Offer Solution To Supercapacitors’ Energy Storage

Supercapacitors are superior to batteries because they can load up on energy and discharge it much faster. They store electrical charges, unlike batteries, which store energy in chemicals. Unfortunately their size makes them impractical for most non-industrial applications.

Now a South Korean research team have found a way to shrink the size of supercapacitors, replacing carbon nanotubes and graphene with an unlikely (and inexpensive) substitute: burnt cigarette butts.

Conventionally, the devices rely on carbon because it is inexpensive, has a high surface area, has strong electrical conductivity and is stable. Now the team from Seoul National University says it has found a way to transform the cellulose acetate fibers in cigarette filters into a carbon-based material in a single, simple step. The filters are burned using a technique called pyrolysis. The resulting material contains many pores of different sizes, thus increasing its surface area and thus its performance. This is important in creating a high-performing supercapacitor, according to Professor Jongheop Yi, a co-author of the study.

“A combination of different pore sizes ensures that the material has high power densities, which is an essential property in a supercapacitor for the fast charging and discharging,” Yi says.

The scientists attach this substance to one electrode in a three-electrode supercapacitor to learn how well it could absorb and release a charge. They found that their material stored more energy than conventional carbon, graphene and even carbon nanotubes. That means that their form factor can shrink.

Read more at Cigarette Butts Offer Solution To Supercapacitors’ Energy Storage | Oilprice.com.

Solar And Wind Power More Expensive Than Thought

A new paper from Charles Frank an economist at the Brookings Institution, a Washington think tank, argues that wind and solar power are not economically viable:

The paper examined four kinds of carbon-free energy – solar, wind, hydroelectric and nuclear – as well as low-carbon gas generation, and compared them with generators that burn fossil fuels. It also posited a value of $50 per metric ton of reduced carbon emissions and $16 per million BTUs of gas.

Frank calculated that electricity generated by a combination of nuclear, hydro and natural gas have much greater benefits than either wind or solar energy because wind and solar generators cost more to operate even though they require no fuel.

For example, nuclear plants run at about 90 percent of capacity compared with wind turbines, which are only about 25 percent efficient, and solar plants with only 15 percent efficiency. As a result, Frank wrote, nuclear plants avoid almost four times as much CO2 per unit of capacity as wind turbines, and six times as much as solar generators….

Read more at Solar And Wind Power More Expensive Than Thought.

Hat tip to Oilprice.com