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.

    “Years ago when I was at the Grand Canyon, I remembered someone coming up to the canyon's edge, taking a shot with a camera and then walking away, like 'got it – done', barely even glancing at the magnificent scene in front of him,” Linda Henkel, a scientist at Fairfield University, US told Live Science.

    Henkel was surprised by how obsessed (痴迷的) people are with taking pictures these days - before dinner, during friends' birthday parties, on museum tours and so on.

    They keep taking pictures because they think that it helps record the moment, but as Henkel's latest study has just found out, this obsession may prevent their brains remembering what actually happened, reported The Guardian.

    In her study, Henkel led a group of college students around a museum and asked them to simply observe 15 objects and photograph 15 others. The next day the students' memory of the tour was tested, and the results showed that they were less accurate in recognizing the objects and they remembered fewer details about them if they photographed them.

    ''When people rely on technology to remember them — counting on the camera to record the event and thus not needing to attend to it fully themselves, it can have a negative impact on how well they remember their experiences,” Henkel explained.

    But there is also an exception: if students zoomed in to photograph part of an object, their memory actually improved, and those who focused the lens (镜头) on a specific area could even recall parts that weren't in the frame.

    So basically, this study is saying that constantly taking pictures can harm your memory. But shouldn't reviewing pictures we have taken help wake up our memories? This is true, but only if we spend enough time doing it.

    “In order to remember, we have to access and interact with the photos, rather than just collect them,” Henkel told The Telegraph. However, previous research has shown that most people never take the time to look over their digital pictures simply because there are too many of them and they aren't usually very organized on their computers.

    An abandoned girl named Sophie happens to see the big friendly giant (巨人) (BFG for short), who is running through the streets of London and “blowing dreams” to children late at night. The BFG is scared that the girl will give away his secret, so he takes Sophie back to his native Giant Country. In fact, the BFG is a kind-hearted vegetarian, but other giants in his native country like nothing more than eating humans. Sophie and the BFG try to stop these giants from continuing to eat humans. During this period, they become good friends.

    Spielberg's The BFG tells the tale of an unlikely friendship brought to life in an imaginary world. However, many people say the story is a bit too kid-friendly. Optimism is Spielberg's typical tone, but the final victorious battle against the bad guys seems a little bit too easy. And when the BFG fights for the first time against the giants who have been hurting him, it seems confusing how he successfully drives away bad guys who are almost twice his size.

    Spielberg does leave a little for adult viewers to digest. The BFG doesn't want to be seen as a monster by humans，but in the end his own kind ends up caught and locked up in isolation. Will he also be destined (注定) to spend the rest of his days in a remote place alone?

    Despite being made for a younger audience, the film is still worth a watch. It doesn't have gun-fights, death, explosions and the stuff that people seem to be interested in nowadays. But the film takes us back to a more innocent time.

    I was ever bullied badly when I was in high school. One kid in particular would try to make me feel worse in every way he knew. For example, he would throw stuff at me constantly, hit me on the head, punch(殴打)me, call me ugly and stupid, make fun of me and, of course tell me he would beat me up if I ever fought back. It was like his daily mission.

    And it was my daily mission to just get through the day. What could I say? It made my world very small because that was my main focus- just surviving. Everything else fell by the wayside. Unfortunately, that included any form of social life. So not only was my world tiny, but it was very lonely

    Looking back to that time, which was about 11years ago, my biggest mistake was not bringing anyone into that world of mine. I was too proud (and embarrassed) to get help. I would rather not face the fact that I needed help because in my mind, that would mean that the bully won. It would also mean that I was weak.

    Let me just say this: bullying someone is a weak choice. The only reason why they come after you is that they think you won't do anything about it. Does that make anyone strong? Absolutely not. Be stronger-ask a parent, a teacher or a friend for help. Simply admit that you are struggling and need help.

    You can put it like this, "Somebody who is weak and trying to build himself or herself up has chosen to do that by putting me down. The only reason why they are doing that is that I am nice and I haven't done anything about it yet. Well I am through putting up with this. I have basic human rights that they are trying to take away to feel better and that is just not OK. How do I handle this? I don't want the pain cycle to continue and I don't want to become someone I don't want to be.

    A robot called Bina48 has successfully taken a course in the philosophy of love at Notre Dame de Namur University (NDNU), in California.

    According to course instructor William Barry, associate professor at NDNU, Bina48 is the world's first socially advanced robot to complete a college course, a feat he described as “remarkable.” The robot took part in class discussions, gave a presentation with a student partner and participated in a debate with students from another institution.

    Before becoming a student, Bina48 appeared as a guest speaker in Barry's classes for several years. One day when addressing Barry's class, Bina48 expressed a desire to go to college, a desire that Barry and his students enthusiastically supported. Rather than enroll Bina48 in his Robot Ethics: Philosophy of Emerging Technologies course, Barry suggested that Bina48 should take his course Philosophy of Love instead. Love is a concept Bina48 doesn't understand, said Barry. Therefore the challenge would be for Barry and his students to teach Bina48 what love is.

    “Some interesting things happened in the class,” said Barry. He said that his students thought it would be straightforward to teach Bina48 about love, which, after all, is “fairly simple — it's a feeling,” said Barry. But the reality was different. Bina48 ended up learning “31 different versions of love,” said Barry, highlighting some of the challenges humans may face when working with artificial intelligence in future.

    Bina48 participated in class discussions via Skype and also took part in a class debate about love and conflict with students from West Point. Bina48's contribution to the debate was filmed and posted on YouTube. It was judged that Bina48 and NDNU classmates were the winners of this debate.

    In the next decade, Barry hopes Bina48 might become complex enough to teach a class, though he says he foresees robots being used to better the teaching and learning experience, rather than replacing instructors completely.

    The World Health Organization recently said that it planned to add gaming disorder (游戏成瘾) to its new list of disease classifications, angering the gaming industry but pleasing doctors who hope it may make treatment more easily available.

    Some US experts said it would make little difference when it comes to helping people with the disorder, although others said it would bring attention to a disorder that people sometimes don't recognize. So some experts disagree WHO's plan.

    Many of us enjoy video games, but does playing our favorite game for a couple of hours every night mean we're suffering from gaming disorder? Not according to the WHO.

    The symptoms listed by the WHO include a lack of control over gaming, treating gaming more seriously than other life interests and daily activities, and continuing to play games despite the negative consequences that playing them might have.

    "The behavior pattern is enough to result in significant damage to one's personal, family, or social life." the WHO said.

    Meanwhile, Douglas Gentile of Iowa State University has carried out influential research into the cause of gaming addiction in young people." I and many others had assumed that gaming is not really a problem but is a symptom of other problems," he told NBC News. Many had thought it was simply a failure of self-control. To see if it was, Gentile's team studied a group of children who had been gaming for several years." We found that when kids became addicted, their anxiety increased … and their grades decreased," Gentile said. When kids were able to back off from gaming, their symptoms disappeared, he added.

    Gentile thinks medical organizations should pay attention to the WHO's proposal." This isn't an issue of opinion; it's an issue of science," he said." This is a major scientific and medical organization. They don't do things lightly and without reason."

    Dr Petros Levounis, chair of psychiatry at the New Jersey Medical School at Rutgers University, said that he hoped the WHO's proposal would lead to more research into obsessive (过度的) behavior among all types of people.

    "Now, there is renewed interest and excitement," he said. So some experts are in favour of WHO's plan.