For teenagers, it's great fun to explore new places and it feels like an adventure, even when you know you're not the first to have been there. But to make sure not to get lost or waste time going round in circles, the following tips may be helpful.

    Do the map reading if you're being driven somewhere. It'll be easier if you keep the map following the direction you are traveling in. Keep looking ahead so that you can give the driver lots of warning before having to make a turn, or you'll have to move to the back seat.

    Get a group of friends together and go exploring. You'll need a good map, a compass , a raincoat, a cell phone to call for help in case you get lost, and a bit of spare cash for emergencies .Tell someone where you're going before you set out and let them know what time you expect to be back. The purpose of the activity is in not getting lost, not in seeing how fast you can go, so always stick together, waiting for slower friends to catch up.

    See if your school or a club organizes orienteering（越野识途比赛）activities, in which you need a map and a compass to find your way. This can be done as a sport, with teams trying to find the way from A to B(and B to C, etc. ) in the fastest time, or simply as a spare-time activity. It enables you to be familiar with the use of maps and compass and gain some special skills. In some way, it's not only good fun, but also a great way to keep fit.

    SILVER SPRING, MARYLAND — Student engagement (参与) is a goal in schools everywhere. A teacher in the Washington suburbs has found a way to engage and motivate students — by ringing rhythm and fun to mathematics. The approach works well especially for students who speak English as a second language.

Making math fun

The voice heard in the video belongs to mathematics teacher Jake Scott. Most of the performers are his students. "I use rap because it is something that appeals to the students, and also because music aids memory," Scott explains.

    Scott started using rap videos three years ago. So far he has produced nine, including

Scott started using rap videos three years ago. So far he has produced nine, including YouTube favorites Triangle Experts and Quadratic Formulatic, which have been viewed tens of thousands of times. "It is fun and the whole process is something that students appreciate," Scott says.

    Empowering students

    Blair High School principal Renay Johnson is a big supporter. She even appears in Scott's latest video, Undefined Expressions.

"Mr. Scott is very motivating and engaging for students," Johnson notes. "He enjoys what he does. As you know he engages students and mathematics through music. But he is also our wrestling coach. He also sponsors National Honor Society. And he is also a director of after school sports academy. I am lucky to have him here as a teacher."

    Scott was recognized as an outstanding educator last year by the Montgomery County Council. He was also honored as 2011 teacher of the year by an African-American civil rights organization.

    Jake Scott says he wants mathematics to be something that students look forward to learning. And he says the results will help them on a path to college and a career.

    When the telephone rings late at night, most women guess it must be one of only four or five people calling. A sister? Maybe. An emergency? Possibly. A mother? Probably not at that time of night. Much more probably it is a close female friend calling to tell you that she has split up with her boyfriend again or perhaps simply that a good movie has just started on TV.

    At a time when families are spread far and wide and marriages often end in divorce, friendships are becoming more and more important. Erika, a 32-year-old lawyer, is strengthened by her ten-year friendship with her married friend Jane. “I was very sick one night, so I called Jane at about 3:00 a.m. to talk about it,” she says. “She was very supportive and even came over to take me to the doctor's the next morning.”

    As American TV shows like Friends, which follows the lives of a very close group of young friends, have become more popular, many of us are beginning to see the value of such friendships. TV shows like this tell us that our romantic relationships may not last, but we need to keep in touch with our close friends if we want to survive.

A TV show called Real Women is about the lives and relationships of five former school friends. In this show, family, husbands, and work are all less important than friendships. One of its actresses says the show reflects her own experience. “Friendship is about commitment. I don't see some of my friends for ages but when we get together, it is as if time hasn't passed.”

    This is true of Erika and Jane's friendship. With Erika's family 200 miles away, it is Jane who keeps a spare set of keys to Erika's apartment and waters her plants whenever she is away. “Having Jane around gives me a certain amount of freedom. It is not the kind of thing that you could ask anyone to do, but she knows I would do the same for her.” Erika feels that because she no longer sees her family every day, she now enjoys a closer relationship with her best friend. Jane, who may move to a different city soon, is worried about leaving such a support system of friends. “My friends have more to do with my life than my parents and, therefore, I don't have to spend a lot of time explaining things to them. Friends are more up to date with what is happening.”

My grandfather was born in a small town in Italy. He would wake up at four in the morning every day to work on the farm. Although he was a great student in school, he only went up to Grade 3 because he was required to help with the family farm. 

Later, my grandfather used his own hard-earned savings—the small amount was all he had—to travel to Canada. He was alone in a new country, not knowing anyone and not speaking English or French. At a farm, the owner quickly saw what a hard-working young man my grandfather was, so he paid my grandfather a much higher salary. Although the owner was very nice to him and treated him like family, he was not satisfied. He dreamed of being more successful, of better career advancements. 

One day, he got an offer to work in the construction industry. My grandfather, a newly immigrated young famer, who was eager to move up in the world, caught this opportunity and prospered( 发达 ) through hard work. Around 1967, however, he become overwhelmed(不知所措的)with stress, sleepless nights and anxiety from the business. He also had two young daughters to take care of and my grandmother was in the hospital at the time. The combined stress and anxiety unfortunately drove him into a major depression. During a medical check-up, his doctor warned him about his health. He knew it was time for him to make a change and decided to sell his shares in the company. 

He then began a smaller business of his own, which resulted in less stress and more time with family. Had he chosen not to quit his former job, he might have been a billionaire today. My grandfather will turn 95 in October; even at this ripe old age, he is still strong, well and high-spirited. Looking at his story as a life example, he teaches us to work hard, but at the same time not to forget to enjoy life and have a good sense of humour about it all. 

Work is important, sure, but there is much more to life than just that. Overall, this is the ultimate key to happiness. 

A team of scientists say that seawater flowing underneath and into gaps in the Thwaites Glacier in Antarctica is contributing to the melting of the massive ice formation.

"The worry is that we are underestimating the speed that the glacier is changing. It would be disastrous for coastal communities around the world," Christine Dow, co-author of the study, said in a press release.

At roughly 80 miles across, Thwaites is the widest glacier in the world, nicknamed the "Doomsday Glacier" for the fatal effects its melting could have on global sea-level rise. Each year, it loses about 50 billion tons of ice, which comprises roughly 4% of all sea-level rise worldwide, according to the International Thwaites Glacier Collaboration. One estimate predicted that the total loss of Thwaites could cause average global sea levels to surge by more than two feet.

In the study, the team of glaciologists used radar data by Finland's ICEYE commercial satellite program to get a better idea of what's happening below the surface of the glacier. They found that seawater flows in and away from, the glacier with the tides, mixing with freshwater, but some of that warm ocean water also travels deep beneath the ice formation, going "through natural passages" or collecting "in holes" and becoming trapped.

"There are places where the water is almost at the pressure of the overlying ice, so just a little more pressure is needed to push up the ice," said Eric Rignot, the study's lead author. "The water is then squeezed enough to jack up a column of more than half a mile of ice."

Dow suggested that additional ice sheet modeling could help scientists better understand what's happening under these major glaciers and develop a more precise timeline of expected sea-level rise across the world. "This work will help people adapt to changing ocean levels, along with focusing on reducing carbon emissions to prevent the worst-case assumption," Dow said.