Ask any kid, and you'll likely hear that time spent with friends is the coolest and most important part of the school day. Educators, as well, acknowledge that making friends is one of the most valuable things children do as they learn and grow. But many parents are perplexed by their children's social lives, wondering how to help their kids cope with the challenges, heartbreaks, and the joys of making friends, losing them, and making friends again.

    “Friendships help children gradually learn to be independent, contributing members of a community and it's just as important as their academic growth” notes Diane Levin, Ph.D., author of “Remote Control Childhood.” However, it's a slow process. There are many social skills to learn, which advance with age and experience, trial and error, and experiencing the satisfaction that comes from contributing to an ongoing friendship.”

    “Friendship starts as soon as children can crawl off their parents' laps over to another child,” adds Michael Thompson, Ph.D., co-author of her life with you to her life with her friends. but who their friends are, how they interact with them, and how popular they are, is something parents have only limited control over.”

    Experts on children's behavior say that problems like jealousies, breakups, bullying and teasing account for a big part of what parents, kids and teachers talk about, and what parents worry about.

    Get insights into how children's friendships develop and how parents can help, if needed, and find ways to determine if your child is at risk for serious social problems or simply suffering from real (but common) social challenges.

    I don't ever want to talk about being a woman scientist again. There was a time in my life when people kept asking me stories about what it's like to work in a field under the control of men. I was never very good at telling those stories because truthfully I never found them interesting. What I do find interesting is the existence of the universe, the shape of space time and the nature of black holes.

    At 19, when I began studying astrophysics(天体物理学), it did not bother me in the least to be the only woman in the classroom. But while earning my Ph.D. at MIT and then as a post-doctor doing space research, the problem started to bother me. My every achievement—jobs, research papers, awards—was viewed from the angle of gender (性别) politics. So were my failures.

    Then one day a few years ago, out of my mouth came a sentence that would finally become my reply to any and all provocations(挑衅): I don't talk about that any more. It took me 10 years to get back the confidence I had at 19 and to realize that I didn't want to deal with gender problems. Why should removing sexism be yet another terrible burden on every female scientist? After all, I don't study sociology or political theory.

    Today I research and teach at Barnard, a women's college in New York City. Recently, someone asked me how many of the 45 students in my class were women. You cannot imagine my satisfaction at being able to answer, 45. I know some of my students worry how they will manage their scientific research and a desire for children. And I don't take no notice of those concerns. Still, I don't tell them “war” stories. Instead, I have given them this: the scene of their physics professor heavily pregnant (怀孕）doing physics experiments. And in turn they have given me the image of 45 women driven by a love of science. And that's a sight worth talking about.

    Meeting people from another culture can be difficult. From the beginning, people may send the wrong signal. Or they may pay no attention to signals from another person who is trying to develop a relationship.

    Different cultures emphasize (强调) the importance of relationship building to a greater or lesser degree. For example, business in some countries is not possible until there is a relationship of trust. Even with people at work, it is necessary to spend a lot of time in "small talk", usually over a glass of tea, before they do any job. In many European countries -- like the UK or France -- people find it easier to build up a lasting working relationship at restaurants or cafes rather than at the office.

    Talk and silence may also be different in some cultures. I once made a speech in Thailand. I had expected my speech to be a success and start a lively discussion; instead there was an uncomfortable silence. The people present just stared at me and smiled. After getting to know their ways better, I realized that they thought I was talking too much. In my own culture, we express meaning mainly through words, but people there sometimes feel too many words are unnecessary.

    Even within Northern Europe, cultural differences can cause serious problems. Certainly, English and German cultures share similar values; however, Germans prefer to get down to business more quickly. We think that they are rude. In fact, this is just because one culture starts discussions and makes decisions more quickly.

    People from different parts of the world have different values, and sometimes these values are quite against each other. However, if we can understand them better, a multicultural environment will offer a wonderful chance for us to learn from each other.

    Three miles is short by car, but when the three miles consists of an old wooden fence on a cattle farm that requires a fresh coat of paint, it's not a short distance any more. For the final week of summer heading into my first year of college, painting this fence was a disaster for me. At first it seemed like the most boring way to spend the last week of my wonderful freedom from school, but it actually turned out to be something intriguing.

    Luckily, I wasn't alone in this task; I got the help of Rob, the farm manager. When two people were stuck under the sun of August in the middle of rural Kentucky for ten hours a day, there wasn't much to do to help pass the time. Standing in front of this fence was the last thing on Earth I wanted to do. I worked with Rob all these days, spending over hours with him with nothing to do but a boring task, and all we had for amusement was conversation. In a society filled with constant entertainment, this was a huge contrast.

    It started out simply, and we talked about the weather, sports, and how annoying it was to get the fence painted. As the week progressed, so did our topics of discussion. From family and funny childhood stories to our hobbies and dreams, we began to know more about each other. We shared personal stories with each other, little pieces of our past and ourselves. I had spent plenty of time with people whether it was about sporting events, movies, or concerts, but never had I spent so much time with one person with absolutely nothing to break the silence. It was uncomfortable at first, but things changed.

    Sometimes we tried to keep ourselves busy, entertained, or from getting bored. There is a deeper connection you get with people when all you're doing is talking. For a moment, you get an inside look into their mind, heart and soul. This is what humans are good at—sharing themselves. Whether we realize it or not, this is happening all the time all around us.

    "Have a nice day!" may be a pleasant gesture or a meaningless expression. When my friend Maxie says "Have a nice day" with a smile, I know she sincerely cares about what happens to me. I feel loved and secure since another person cares about me and wishes me well.

    "Have a nice day. Next!" This version of expression is spoken by a salesgirl at the supermarket who is rushing me and my groceries out the door. The words come out in the same tone(腔调)with a fixed procedure. They are spoken at me, not to me. Obviously, the concern for my day and everyone else's is the management's attempt to increase the business.

    The expression is one of those behaviors that help people get along with each other. Sometimes it indicates the end of a meeting. As soon as you hear it, you know the meeting is at an end. Sometimes the expression serves us when we don't know what to say." Oh, you just had a tooth out? I'm terribly sorry, but have a nice day."

    The expression can be pleasant. If a stranger says "Have a nice day" to you, you may find it heart-warming because someone you don't know has tried to be nice to you.

    Although the use of the expression is an insincere, meaningless social custom at times, there is nothing wrong with the sentence except that it is a little uninteresting. The salesgirl, the waitress, the teacher, and all the countless others who speak it without thinking may not really care about my day. But in a strange and comfortable way, it's nice to know they care enough to pretend they care when they really don't care all that much. While the expression may not often be sincere, it is always spoken. The point is that people say it all the time when they like.

    Alice Moore is a teenager entrepreneur(创业者), who in May 2015 set up her business AilieCandy. By the time she was 13,her company was worth millions of dollars with the invention of a super­sweet treat that could save kids'teeth, instead of destroying them.

    It all began when Moore visited a bank with her dad. On the outing, she was offered a candy bar. However, her dad reminded her that sugary treats were bad for her teeth. But Moore was sick of missing out on candies. So she desired to get round the warning, "Why can't I make a healthy candy that's good for my teeth so that my parents can't say no to it?" With that in mind, Moore asked her dad if she could start her own candy company. He recommended that she do some research and talk to dentists about what a healthier candy would contain.

    With her dad's permission, she spent the next two years researching online and conducting trials to get a recipe that was both tasty and tooth­friendly. She also approached dentists to learn more about teeth cleaning. Consequently, she succeeded in making a kind of candy only using natural sweeteners, which can reduce oral bacteria.

    Moore then used her savings to get her business of the ground. Afterwards, she and her father secured their first business meeting with a supermarket owner, who finally agreed to sell Moore's product­Cancandy.

    As CanCandy's success grows, so does Moore's credibility as a young entrepreneur. Moore is enthusiastic about the candy she created, and she's also positive about what the future might bring. She hopes that every kid can have a clean mouth and a broad smile.

    Meanwhile, with her parents' help, Moore is generally able to live a normal teenage life. Although she founded her company early on in life, she wasn't driven primarily by profit. Moore wants to use her unique talent to help others find their smiles. She donates 10% of AilicCandy's profits to Big Smiles. With her talent and determination, it appears that the sky could be the limit for Alice Moore.