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Cell Phones: Are they dangerous?
Do you have a cell phone? Do you use it a lot? If the answer to these questions is yes, you should read the following information very carefully.
If you keep on using a cell phone, it will probably cause premature ageing, which might be rather difficult to get over. At least this is what most scientists claim. Low-level radiation from the phone may heat up body cells, damaging skin and making it look slightly lined and tired. Scientists say that if you expose cells to the radiation from a cell phone, the natural process that repairs your skin will probably be affected. Furthermore, radiation produces mutations in the cells and these mutations could be related to other health problems.
Cell phone users have also found out that if they use their phone for a long time they feel other symptoms such as fatigue and memory loss. The fatigue may be caused because, when using phones, people suffer an involuntary speeding up of their heart beat. Apart from that, nearly two out of three people interviewed complained of regular headaches from using their phones, although this may be due to bad posture rather than radiation emissions.
The most surprising fact discovered by researchers is that people exposed to the radiation of a cell phone for 45 minutes go to the bathroom twice as much as usual. This proves that radiation has a biological effect on humans.
So if I were you, I would definitely think twice before using a cell phone if I looked in the mirror and saw wrinkles on my face, felt fatigue, had trouble remembering things, or if I started using my bathroom more often than I used to.
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Disponível em www.ondemandnews.com. Acesso em: 11 de jul. 2016 (adaptado).
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O que cabe ao supervisor é se relacionar com o docente, visando contribuir para a relevância da sua relação com os alunos, de maneira diferenciada, qualificada, mas desenvolvendo uma prática semelhante, porque para se tornar um mediador do processo de ensino ele precisará:
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‘…old neighborhoods may be better for your health.’ “But we can build environments that promote healthy behavior.” The words in bold are all examples of:
Every day thousands of teens wake up afraid to go to school. Bullying is a problem that affects millions of students, and it has everyone worried, not just the kids on its receiving end. Yet because parents, teachers, and other adults don’t always see it, they may not understand how extreme bullying can get.
Bullying is when a person is picked on over and over again by an individual or group with more power, either in terms of physical strength or social standing.
Two of the main reasons people are bullied are because of appearance and social status. Bullies pick on the people they think don’t fit in, maybe because of how they look, how they act (for example, kids who are shy and withdrawn), their race or religion, or because the bullies think their target may be gay or lesbian.
Some bullies attack their targets physically, which can mean anything from shoving or tripping to punching or hitting, or even sexual assault. Others use psychological control or verbal insults to put themselves in charge. For example, people in popular groups or cliques often bully people they categorize as different by excluding them or gossiping about them (psychological bullying). They may also taunt or tease their targets (verbal bullying).
Verbal bullying can also involve sending cruel texts, messages, or emails or posting insults about a person on Facebook or other sites — practices that are known as cyberbullying. Studies show that people who are abused by their peers are at risk for mental health problems, such as low self-esteem, stress, depression, or anxiety. They may also think about suicide more.
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When Milva McDonald sent her oldest daughter to Newton public school kindergarten in 1990, she was disturbed by what she saw. The kids were being tracked, even at that young age. And then there were the endless hours the small children spent sitting at their desks. It felt unnatural. In the real world, you wouldn’t be stuck in a room with people all the same ages with one person directing them, she thought.
During that single year her daughter was in the school system, McDonald saw enough to convince her that she could do better on her own. That would be no small feat: Newton’s public schools have long been rated as among the best in the state (in our Greater Boston rankings this year, they’re 10th.). But she’d always worked part time—she’s now an online editor—and she was fortunate that she could maintain a flexible schedule. So she yanked her daughter out of school, and over the next two decades homeschooled all four of her children—including her youngest, Abigail Dickson, who’s now 16.
McDonald’s first homeschool rule was to throw out the book and let her children guide their learning, at their own pace. In lieu of a curriculum or published guides, McDonald improvised, taking advantage of the homeschooling village that had sprouted up around her. One mother ran a theater group, a dad ran a math group, and McDonald oversaw a creative-writing club. Their children took supplementary classes at the Harvard Extension School and Bunker Hill Community College. “I wanted them to be in charge of their own education and decide what they were interested in, and not have someone else telling them what to do and what they were good at,” she says.
And by any measure, it’s working. McDonald’s daughter Claire—the third of her four children to be homeschooled—will enter Harvard College as a freshman this fall.
Back in the ’90s, McDonald was considered a homeschooling pioneer; now she’s joined by a growing movement of parents who are abstaining from traditional schooling, not on religious grounds but because of another strong belief: that they can educate their kids better than the system can. Though far from mainstream (an estimated 2.2 million students are home-educated in the U.S.), secular homeschooling is trending up. Last year, 277 children were homeschooled in Boston, more than double the total from 2004; in Cambridge the number was 46. (In surrounding towns, the numbers are growing, too: During the 2013–2014 school year, Arlington had 55; Somerville, 36; Winthrop, 5; Brookline, 11; Natick, 36; Newton, 33; and Watertown, 24.)
There’s enough momentum that major cultural institutions—from the Franklin Park Zoo and the New England Aquarium to the Museum of Fine Arts and MIT’s Edgerton Center—now regularly offer classes for homeschoolers. Tellingly, even public school systems are becoming more accommodating. In Cambridge, for example, homeschoolers have the option to attend individual classes in the district’s schools. Some take math or science classes and participate in sports—last year, one homeschooler took music and piano lessons. Carolyn Turk, deputy superintendent for teaching and learning at Cambridge Public Schools, says she’s seeing more of this “hybrid” approach than in the past. “In Cambridge we look at homeschooling as a choice,” she says. “Cambridge is a city of choice.”
The Boston Public Schools, meanwhile, have begun to view homeschooling as one of the many laboratories in which it can explore new teaching methods. “These people are looking to do instructive, nontraditional education. It’s all different types of people from all incomes,” says Freddie Fuentes, the executive director of educational options for Boston Public Schools. Fuentes, who personally helps parents with academic plans, finds that many homeschooling parents want “very deep, expeditionary learning” for their children. “A lot of them are looking at innovative ways of learning,” he says. “We as a school system need to think about innovation and the cutting edge.”
In other words, homeschooling is arriving here in a very Boston-like way: It’s aspirational, intellectual, entrepreneurial, and innovative.
(http://www.bostonmagazine.com/news/article/2015/08/25/homeschooling-in-boston/)
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There has never been a technological invention that has caught on as rapidly as the cellular phone, global sales of which have risen from 6 million in 1991 to more than a billion units a year now. The total number of global cell phone users exceeded the number of non-users for the first time in history in 2008. (Of course, these statistics distort the real picture, since many people in the more affluent countries own more than one phone while there are still countries in the world where cell phone ownership is near zero.)
Innovation in cell phones has accelerated so much that it is often difficult for consumers to keep up with the new possibilities they provide. Phones are constantly incorporating other products like cameras, radios, MP3 players, GPS navigation systems, portable flash memory drives, even televisions.
There is now a massive range of different products that previously might have been bought separately that can now be part of a cell phone.
Cellular phones have radically transformed our lives. They have reshaped the way we communicate with one another, they have generated new forms of language, they have become fashion accessories, and they have given us the freedom to do what we want, where we want. In a world where mobile internet access is no longer a matter of science fiction, we can have any information at our finger tips any hour of any day, and we no longer have to feel cut off when we leave the safety of our homes or offices.
Obviously, the rich have been quicker to by cell phones than the poor. But this is true for any consumer product. Cell phone take-up among the poor has actually been far more widespread than that of previous innovations, like color TV, computers, or internet access. As the prices of cellular phones continue to fall and their capabilities continue to expand, they might end up being more successful in bridging the gap between the upper and the lower social classes than relatively expensive computers.
Cell phones have also some negative associations. Just consider all those road accidents waiting to happen as drivers hold a cell phone in one hand, and drive with the other hand. Cell phone thefts now also make up nearly a third of all street robberies in some large urban areas. Some medical research shows cell phone users are more than twice as likely to develop tumors in those parts of the brain nearer their phone ear, although, as of yet, researchers have been unable to find conclusive evidence for any connection with phone usage.
Overall, cell phones have brought more advantages than drawbacks to our lives. As with any invention, we just have to take the bad with the good, and enjoy the benefits they have to offer.
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Disponível em www.ondemandnews.com. Acesso em: 11 de jul. 2016 (adaptado).
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1. Os oceanos estão sendo extremamente afetados pela poluição. Objetos plásticos trazidos pelas correntes marítimas causam a morte de milhões de pássaros e mamíferos marítimos a cada ano e afetam os peixes consumidos pelos humanos.
2. Embora tenham se convertido, há muito, em depósitos de lixo, os oceanos, graças à sua enorme diversidade e capacidade de regeração, pouco são afetados pela poluição dos continentes.
3. Os oceanos são os verdadeiros pulmões da terra e graças a sua capacidade de recuperar os resíduos da civilização industrial neles lançados, reciclando o plástico e degradando os poluentes e pesticidas, garantem infinitamente a sobrevivência da vida no planeta.
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