After a year of examining many studies concerning whether homework is effective, NYC P. S. Elementary School decided that math worksheets and essay assignments were actually a waste of time. In February, Principal Jane Hsu sent a letter to parents stating that the Pre-K(学前班) through fifth grade students wouldn't be given any traditional homework to encourage kids to free time for reading, playing outside, or doing activities they enjoy.

    “The negative effects of homework have been well established.” Hsu wrote in a note to parents. “They include, children's frustration and exhaustion, lack of time for other activities and family time and, sadly for many, loss of interest in learning.”

    Some parents, however, disagree with the policy change, believing that a lack of focus will cause children to fall behind. Homework has been part of education from the beginning, and has increased in amount in recent years.

    Hsu's advice that children should read and spend time with their families has upset some parents to the point of considering pulling their children out of the school. This group feels that homework gives children a goal to work toward. Others feel so strongly about the importance of homework that they have begun giving their own homework to their children.

    An Australian Childhood Foundation survey finds that 71% of Australian parents feel they don't spend enough quality time with their children mainly because of the time spent running the household or the time spent helping with homework. Education experts in Australia are saying that parents should stop helping. Doing so will give kids more independence, give parents more free time, and help reduce the number of arguments caused by homework in the family.

    While some research suggests that homework has little academic benefit for elementary students, other researches show homework can help kids develop independence, and confidence. It can also contribute to a sense of belonging or control over their lives. When parents try to help their children with homework, the assistance can take away that feeling and can also make working parents more tired.

    When asked about happiness, we usually think of something extraordinary, an absolute delight, which seems to get rarer the older we get.

    For kids, happiness has a magical quality. Their delight at winning a race or getting a new bike is unreserved (毫无掩饰的).

    In the teenage years the concept of happiness changes. Suddenly it's conditional on such things as excitement, love and popularity. I can still recall the excitement of being invited to dance with the most attractive boy at the school party.

    In adulthood the things that bring deep joy—love, marriage, birth—also bring responsibility and the risk of loss. For adults, happiness is complicated.

    My definition of happiness is “the capacity for enjoyment”. The more we can enjoy what we have, the happier we are. It's easy to overlook the pleasure we get from the company of friends, the freedom to live where we please, and even good health.

    I experienced my little moments of pleasure yesterday. First I was overjoyed when I shut the last lunch-box and had the house to myself. Then I spent an uninterrupted morning writing, which I love. When the kids and my husband came home, I enjoyed their noise after the quiet of the day.

    Psychologists tell us that to be happy we need a mix of enjoyable leisure time and satisfying work. I don't think that my grandmother, who raised 14 children, had much of either. She did have a network of close friends and family, and maybe this is what satisfied her.

    We, however, with so many choices and such pressure to succeed in every area, have turned happiness into one more thing we've got to have. We're so self-conscious about our “right” to it that it's making us miserable. So we chase it and equal it with wealth and success, without noticing that the people who have those things aren't necessarily happier.

    Happiness isn't about what happens to us—it's about how we see what happens to us. It's the skillful way of finding a positive for every negative. It's not wishing for what we don't have, but enjoying what we do possess.

    Experience the newly opened Grand Canyon West Skywalk in Colorado.Departing from Grand Canyon's South Rim by Airplane to Grand Canyon's West Rim,you will land and take a ground tour to the Skywalk! Walk on air for 70 feet over the edge of Grand Canyon West.

    This Skywalk has been open since March 28,2007.Daily visitor-ship to the Skywalk has been over 4000 people. Please be patient to enjoy your moment on the Skywalk.

    After you have experienced the one and only Grand Canyon Skywalk Glass Bridge from where you can enjoy the scenery better,you will return to the Grand Canyon West airport and take your Airplane for a flight back to the South Rim of the Canyon.This is a tour never to be forgotten as you will have walked on air over the Grand Canyon.

Tour Itinerary

    Wrist watches are regarded as a tool to tell the time. At first, watches were created as women's decorative bracelets (手镯). At the same time, men used pocket watches. The first men's wrist watch was available in 1904. A pilot called Alberto Santos-Dumont personally asked a watchmaker to create a wrist watch to use on flights. Soon after that, men's wrist watches were available on the market. Since then, watches have been considered fashionable accessories for men, and watchmakers have started to make men's fashion watches.

    At present, watches are not indispensable to tell the time for most people have cell phones which have watch functions. But a new market has been created for wrist watches, which are not only used to tell the time, but also as important fashion statement pieces.

    Generally speaking, watches for formal occasions are beautifully made and more like pieces of jewelry than watches. Men's watches for informal and semi-formal events include simple, slim designs and large-and-thick-sized styles. Nowadays, men usually don't follow any specific style of dress for watches, and the luxury brands of the expensive and strongly made sports watches have made them believe that they look more stylish because of their high prices. Some of the fashion watches have a diamond and some others are completely decorated with precious stones such as diamonds.

    Men's watches also have many advanced functions. For example, the dual-time watches for travelers make them know the time in most other countries as well as the time in their home if they are abroad.

In a word, a men's watch is one of the few accessories for men's cupboard. Men can choose their most suitable watches to go with their personal taste.

    I was very excited on the first day of high school! I had P.E for the first period. We hurriedly gathered in the locker room (衣帽间) when the headmaster began to speak, “Good morning, boys and girls! Welcome to the first day of the great new school year. We will begin with the pledge (誓言) of loyalty.”

    I pulled my shirt over my head and my right hand immediately rested over my heart. A few tears came to my eyes as every time I pledged. I thought of my grandpa. He had died almost a year before, but I still missed him every day. Grandpa served in World War II and the flag had a very special meaning for him.

    The next morning in the locker room, I noticed something strange. Some girls talked through the pledge. After that, even fewer did the pledge, including the teachers. By the second week of school, I was the only girl in the whole locker room that did the pledge.

    The next morning, I hid in the bathroom to change clothes and pledge. There I couldn't see the flag and I had a sense of sorrow to be hiding like that. I kept hiding for the next week and felt worse.

    I spent a weekend gathering up my nerve. On Monday, I changed into my gym clothes right away and was standing by my locker when the headmaster began morning announcements. The pledge started and I put my hand over my heart. A girl nearby locked her locker and asked, “Why are you doing that? ” She looked confused.

    “My grandpa fought in World War II and he died last year,” I said. “I'm doing it for him.”

    She felt embarrassed and looked away. “Oh.” She said.

    Over the next few weeks, more girls questioned me about the pledge. I gave them all that same answer. I never inspired other girls to do the pledge along with me. They made their choice; I made mine. I was doing it for my Grandpa, but more than that, I was doing it for myself. Grandpa raised me to be proud of my country and that pride didn't stop.

    While elephants born without tusks (长牙)are not unheard of，they normally form just 2 to 6 percent of the population. However, that is not the case at Mozambique's Gorongosa National Park, where an astonishing 33 percent of female elephants born after the country's civil war ended in 1992 are tuskless. While that may appear to be just a coincidence, Joyce Poole, an elephant behavior expert, has another theory. The researcher thinks we may be witnessing unnatural evolution of the species due to the constant hunting of elephants for valuable ivory.

    Poole says before the country's 15-year-long civil war, the 100,000—acre park was home to over 4,000 elephants. However, by the time the conflict ended in 1992, about 90 percent of them had been killed for ivory to help finance weapons (武器)and meat to feed the soldiers. Of the less than 200 survivors, over 50 percent of adult females had no tusks. Therefore, it is not surprising that the park's tuskless elephant population has grown greatly.

    This is not the first time researchers have observed a great change in the population of elephants. At Zambia's South Luangwa National Park and Lupande Game Management Area ， areas which were heavily hunted in the 1970s and 1980s, 35% of elephants 25 years or older and 13% of those younger than 25 are now without tusks. A 2008 study published in the African Journal of Ecology found that the numter of tuskless females at the Ruaha National Park in Tanzania went from 10.5 percent in 1969 to almost 40 percent in 1989, largely due to illegal hunting for ivory.

    The recent ban on ivory in both the US and China should help get rid of, or at least reduce, elephant hunting. However, scientists are not sure how long it will take for elephants with a higher rate of tuskless females, to change the trend.