This brief book is aimed at high school students, but speaks to anyone learning at any stage of life.

    Its formal, serious style closely matches its content, a school-masterly book on schooling. The author, W. H. Armstrong, starts with the basics: reading and writing. In his opinion, reading doesn't just mean recognizing each word on the page; it means taking in the information, digesting it and incorporating it into oneself just as one digests a sandwich and makes it a part of himself. The goal is to bring the information back to life, not just to treat it as dead facts on paper from dead trees. Reading and writing cannot be completely separated from each other; in fact, the aim of reading is to express the information you have got from the text. I've seen it again and again: some one who can't express an idea after reading a text is just as ineffective as someone who hasn't read it at all.

    Only a third of the book remains after that discussion, which Armstrong devotes to specific tips for studying languages, math, science and history. He generally handles these topics thoroughly and equally, except for some weakness in the science and math sections and a bit too much passion (激情) regarding history to his students, that was a hundred times more than my history teachers ever got across. To my disappointment, in this part of the book he ignores the arts. As a matter of fact, they demand all the concentration and study that math and science do, though the study differs slightly in kind. Although it's commonly believed that the arts can only be naturally acquired, actually, learning the arts is no more natural than learning French or mathematics.

    My other comment is that the text aged. The first edition apparently dates to the 1960s—none of the references(参考文献) seem newer than the late 1950s. As a result, the discussion misses the entire computer age.

    These are small points, though, and don't affect the main discussion. I recommend it to any student and any teacher, including the self-taught student.

    Play allows children to use their creativity while developing their imagination and physical, cognitive（认知的）, and emotional strength. Play is important to healthy brain development. Play allows children to create and explore a world they can master, conquering their fears while practicing adult roles. Undirected play allows children to learn how to work in groups, to share, to negotiate, and to resolve conflicts.

    Ideally, much of play involves adults, but when play is controlled by adults, children acquiesce（顺从）to adult rules and concerns and lose some of the benefits play offers them, particularly in developing creativity, leadership, and group skills. In contrast to passive entertainment, play builds active, healthy bodies. In fact, it has been suggested that encouraging unstructured play may be an exceptional way to increase physical activity levels in children, which is one important strategy in the resolution of the obesity problem.

    Children's development is critically influenced by appropriate, affective relationships with loving and consistent caregivers as they relate to children through play. When parents observe their children in play or join with them in child-driven play, they are given a unique opportunity to see the world from their children's vantage point as the child navigates a world perfectly created just to fit his or her needs. The interactions that occur through play tell children that parents are fully paying attention to them and help to build enduring relationships. Parents who have the opportunity to look at their children's world learn to communicate more effectively with their children aid are given another setting to offer guidance. Less verbal children may be able to express their views, giving their parents an opportunity to gain a fuller understanding of their perspective. Quite simply, play offers parents a wonderful opportunity to engage fully with their children.

    Play is essential to the academic environment. It ensures that the school setting attends to the social and emotional development of children as well as their cognitive development. It has been shown to help children adjust to the school setting and even to strengthen children's learning willingness. Social-emotional learning is best integrated（融合）with academic learning; it is concerning if some of the forces that enhance children's ability to learn are improved at the expense of others. Play and unscheduled time that allow for peer interactions are important components of social-emotional learning.

    By the end of the century, if not sooner, the world's oceans will be bluer and greener thanks to a warming climate, according to a new study.

    At the heart of the phenomenon lie tiny marine microorganisms (海洋微生物) called phytoplankton. Because of the way light reflects off the organisms, these phytoplankton create colourful patterns at the ocean surface. Ocean colour varies from green to blue, depending on the type and concentration of phytoplankton. Climate change will fuel the growth of phytoplankton in some areas, while reducing it in other spots, leading to changes in the ocean's appearance.

    Phytoplankton live at the ocean surface, where they pull carbon dioxide (二氧化碳) into the ocean while giving off oxygen. When these organisms die, they bury carbon in the deep ocean, an important process that helps to regulate the global climate. But phytoplankton are vulnerable to the ocean's warming trend. Warming changes key characteristics of the ocean and can affect phytoplankton growth, since they need not only sunlight and carbon dioxide to grow, but also nutrients.

    Stephanie Dutkiewicz, a scientist in MIT's Center for Global Change Science, built a climate model that projects changes to the oceans throughout the century. In a world that warms up by 3℃, it found that multiple changes to the colour of the oceans would occur. The model projects that currently blue areas with little phytoplankton could become even bluer. But in some waters, such as those of the Arctic, a warming will make conditions riper for phytoplankton, and these areas will turn greener. "Not only are the quantities of phytoplankton in the ocean changing." she said, "but the type of phytoplankton is changing."

    Your colleague's sharp comment keeps replaying in your mind. Two of your students are trapped in a "he said/she said" battle. When you reflect on your emotional reactions, you sometimes get caught up in cycles of negative feelings, which can make you feel even worse. If so, the answer may lie in a skill called "self-distancing", the ability to take a step back and view yourself more objectively. According to a research, when people adopt self-distancing while discussing a difficult event, they make better sense of their reactions, experience less emotional suffering, and display fewer signs of stress.

    But what might self-distancing look like in action? Consider a typical "he said/she said" student conflict where they are each focusing on their own feelings. One is thinking, "I can't believe he did that to me." And another insists, "She really hurt my feelings." However, if you ask them to take the self-distancing, they might step outside of themselves and ask broader questions: "Why was he so hurt in this situation?" or "How did her anger affect him?"

    Although this approach may sound too simple to be effective, studies indicate that a change in point of view can have a powerful effect on the way people think, feel, and behave. Here are several different techniques you can try.

    First, consider how a thoughtful friend might respond after quietly observing their situation. Besides, avoid using the pronoun "I". Focus on using third-person pronouns, he, she, they, and they were able to see the stressful event as challenging rather than threatening. Finally, ask yourself, "How would I feel about this one week from now or ten years from now?" This form of mental time travel may be effective because our attention is directed away from our immediate, concrete circumstances.

With artificial intelligence (AI) and robotic technology improving at impressive rates, there are some who worry that there's a risk of artistic and creative people being replaced. A new study by the Korean Institute of Industrial Technology, however, is showing exactly why that can't and shouldn't happen. It all started when the South Korean company posed this question: Can robots replace conductors?

Over a year ago, work to develop automaton (自动化) began. At first, it was designed like a machine, and didn't live up to expectations. Then the company sought ways to improve it. In the end, it was given two arms with joints to copy wrists and elbows, allowing it to move a stick similarly to how a human conductor would move it. It was named the EverR 6 robot, and stands at 1.8 meters. It was finally time to figure out how it could follow through on its musical role.

"We got involved in this project to see how far robots can go in more creative fields like the arts, and what the challenges are," Dong-w o ok Lee, a senior researcher at the Korean Institute of Industrial Technology said.

In order to pull this off, Dong-wook Lee cooperated with the Busan Philharmonic Orchestra. The 12-minute piece they planned to perform, "Feel" by Il-hoon Son, was created specifically for this event. It was created with the strengths of both EverR 6 and the human conductor, Soo-yeol Choi, in mind.

To pull off this impressive performance, the robot was preprogrammed to conduct through 30 cycles of beat patterns. Meanwhile, it was up to the human conductor to lead the orchestra in creating an improvisational (即兴的) score, adding depth to the otherwise planned piece.

Together, they pulled off a masterful performance that the audience seemed more than happy to have had the opportunity to witness it firsthand!

With the concert having gone so well, this is only the start of EverR 6. Still, no matter the improvements they're able to make to this Android robot, the human conductor isn't concerned about being replaced.

"Let's leave the accuracy to the robots," Soo-yeol Choi said, "but the musical and artistic aspects to a human conductor."

With all the dietary information online, it can be hard to know what tips to follow. Watch out for these words and expressions.

Fat Is Good

It doesn't matter if you are part of the fat is GOOD for you or BAD for you group, the important question to ask is the source of the fat. If it comes from a land-based animal, and is likely to be solid at room temperature, then it is saturated （饱和的） fat whereas if it comes from fish or plants, and it is likely to be liquid at room temperature, then it is unsaturated fat. All the evidence indicates that eating more unsaturated fat than saturated fat lowers your risk of dying early.

Natural Sugar Is Better

The vast majority of sugar we consume is sucrose （蔗糖）. It is the white powdered stuff we cook with and is made up of glucose and fructose. How about sugar from honey? It is often marketed as natural and better for you. Actually, it just has its own distinct flavour, but is as sweet because of glucose and fructose.

High-pH Water

Some people think we need to eat alkali （碱） food to maintain our blood at a pH of 7.4. But everything we eat or drink passes through the stomach, which, at a pH of 1.5, is the most acidic part of the body. It is then neutralised to a pH of 7. So, nothing we eat will change the pH of our blood.

Don't Eat Anything That You Can't Pronounce

Whether foods are natural or highly processed, they are all full of chemicals. Are you supposed to fear "phenylthiocarbamide", because you can't pronounce it? This is simply the chemical responsible for the bitter taste found in brassicas, the plants in the cabbage and mustard family.

Don't Eat Food With More Than Five Ingredients（佐料）

Simple foods are not necessarily healthier for you. If I, for instance, use Chinese five spice powder in a recipe, that would count as one of the five ingredients. However, what if I added the typical components of five spice powder separately into a dish? Does that mean my recipe suddenly becomes bad because it has more than five ingredients?