Let children learn to judge their own. A child who learns to talk does not learn by being corrected all the time; if corrected too much, he will stop talking. He notices a thousand times a day the difference between the language he uses and the language those around him use. Little by little, he makes the necessary changes to make his language like other people's, in the same way, children learn to do all the other things without being taught—to walk, run, climb, ride a bicycle—compare their own performances with those of more skilled people, and slowly make the needed changes. But in school we never give a child a chance to find out his mistakes if we thought that he would never notice a mistake unless it was pointed out to him, or correct it unless he was made to. Let him work out, with the help of other children if he wants it, what this word says, what the answer is to that problem, whether this is a good way of saying or doing this or not. If it is a matter of right answers, as it may be in mathematics or science, give him the answer book. Let him correct his own papers. Why should our teachers waste time in doing such work? Our job should be to help the child when he tells us that he can't find the way to get their own understanding, how to know what they know or do not know.

    This March is a busy month in Shanghai. There's a lot to do. Here are the highlights.

Live Music - Late Night Jazz

    Enjoy real American jazz from Herbie Davis, the famous trumpet player. He's coming with his new 7-piece band, Herbie's Heroes.  Herbie is known to play well into the early hours, so don't expect to get much sleep. This is Herbie's third visit to Shanghai. The first two were sold out, so get your tickets quickly.

    PLACE: The Jazz Club DATES: 15-23 March PRICE: ￥80,120 TIME: 10:00p.m. till late! TEL: 6466-8736

Scottish dancing

    Take your partners and get ready to dance till you drop. Scottish dancing is fun and easy to learn. Instructors will demonstrate the dances. The live band, Gordon Stroppie and the Weefrees, are also excellent.

    PLACE: Jack Stein's DATES: every Monday PRICE: Y60 including one drink TIME: 7:00 - ~0:00 p.m. TEL: 6402-1877

Exhibitions - Shanghai Museum

    There are 120,000 pieces on show here. You can see the whole of Chinese history under one roof. It's always interesting to visit, but doubly so at the moment with the Egyptian Tombs exhibition. There are lots of mummies and more gold than you've ever seen before. Let us know if you see a mummy move!

    PLACE: Shanghai Museum PRICE: ￥30 (￥ 15 for students) TEL: 6888-6888 DATES: daily TIME: Monday - Friday 9:00a.m. - 5:00p.m., Weekends 9:00a.m. - 9:00p.m.

Dining - Sushi chef in town

    Sushi is getting really big in Shanghai. In Japan, it's become an art form. The most famous Sushi 'artist' is Yuki Kamura. She's also one of the few female chefs in Japan. She'll be at Sushi Scene all of this month.

    PLACE: Sushi Scene in the Shanghai Hotel DATES: all month PRICE: ￥200 TIME: lunch time TEL: 6690-3211

    For a full listing of events, see our website.

    I was recently asked what inspires me most. That was easy to answer: I live and breathe track and field. It is the only sport that has allowed me to spread my wings and truly fly. I have struggled a lot in my life after being diagnosed(诊断) with a learning disability at the age of three. I was also born four months too early, weighing less than four pounds. Even at 17, I'm still working to catch up. Mentally I'm on the level of a 12­year­old. I had to repeat the third and fifth grade, which caused me a lot of stress and embarrassment.

    I was joked so much that I would often hide in the bathroom instead of going to class. My parents always gave me lots of love and support, but I still felt worthless most of the time. I'm also quite shy, so making and keeping friends has always been a challenge.

    Then one day when I was 12, my life changed forever, My parents decided my younger brother and I should try track. From that moment on my life was different. I was a natural mid­distance runner. When I was on the track, the other kids just saw me and my speed. No one saw my learning disability. For the first time in my life I felt normal.

    When I entered high school, I joined the track team and the coach quickly saw my talent. I was selected to run on the A team for cross­county and the A team for indoor and outdoor track. I'm on the school team for the 4×400­meter and 4×800­meter relays, and colleges are even interested in me!

    My cross­county team won the 2011 County and Regional Championship. When I accepted my award, my mom cried because she was so proud of me, and for once, I was proud of myself.

    Even though I'm a special­education student, I now know that my learning disability does not define(限定) me. I can hold my head up high because track has allowed me to spread my wings and truly fly!

    If you are worried about the planet, please make sure your rubbish is buried under the ground.

    People talk about "reduce, reuse, recycle." It sounds like a good idea. There is a problem, though. Recycling costs too much money.

    Even the U.S. Environmental Protection Agency (EPA) says it only makes sense economically and environmentally to recycle about 35 percent of disabled (废弃的) materials. Among those materials are paper and aluminum(铝) cans. Recycling 1 ton of paper or aluminum cans, the agency says, can save about 3 tons of CO₂ emissions (排放物) over producing those materials anew. Paper producers pay for the trees they process. If it was cost-effective to recycle paper, producers would be beating down your door to buy it. But they aren't. That means it's more expensive to recycle old paper than to cut trees and then replant trees for processing.

    Plastic can be recycled too. Given the recent drop in crude oil (原油) prices, it is now cheaper to make a new plastic container than to recycle an old one. Even if that were not true, the EPA says that recycling a ton of plastic saves only about a ton of CO₂. However, it doesn't take into account the water most consumers use to wash their plastic containers before having them recycled. The New York Times journalist John Tierney recently wrote, "If you wash plastic in water that was heated by electricity, then the effort of your recycling could be more carbon in the atmosphere."

    Glass is another recyclable material. To reduce greenhouse gas emissions by 1 ton you have to recycle 3 tons of glass. If one includes the cost of collecting glass waste from neighborhoods, and the pollution produced by the collection trucks and the recycling process itself, glass recycling creates more greenhouse gas emissions and is more expensive than making new glass, which comes primarily from sand that exists everywhere.

    If recycling were truly cost-effective, private companies would be lining up at your doorstep to buy your rubbish. Don't look now because they're not there.