Taking a math test can be pretty stressful. Even if you know the material, you can still get the problem wrong. Knowing how to go through your math test and check your work can save you from handing in a test full of mistakes that can be avoided. {#blank#}1{#/blank#}

Write it out

    You can also check a math problem by writing everything out on paper. {#blank#}2{#/blank#} Writing out math problems reduces your chances of missing anything to the lowest possible level, which is a common cause of incorrect answers.

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    Make sure your answers work by doing the opposite procedure of what your problem calls for, including the answer you got the first time around. In other words, you would use the opposite of this addition problem—subtraction (减法)—to determine whether or not your answer is the correct one.

Plugging in

    You may find that a variable isn't good enough or have a problem where you have to solve for a variable (变量). {#blank#}4{#/blank#} This is the only real way to assure yourself that the answer you've found is correct.

Check for a reasonable answer

    {#blank#}5{#/blank#} For example, if you get an answer in the millions and you know it should be in the thousands, you've likely misplaced a point. Go back through the work on your paper to make sure all of your formulas and calculations are correct. If everything looks okay, do the problem again and compare the result of the second try to what you've got on the first try.

    We are a primary school in England. Our students start arriving at our playground from about 8:45 a.m. Most of the children live nearby, so they walk to school. But some children have to travel to school by car. Each of the children is dressed in a school uniform (校服) and carries the homework and packed lunch in a schoolbag.

    School starts at 8:55 a.m. The teacher on duty blows a whistle (哨子) and the children line up in their class groups. They wait quietly for the teacher to send them to their classrooms. When they arrive at their classrooms, the children empty their schoolbags and put their homework in their boxes. After the children take their seats, the teacher reads out each child's name in turn. Upon hearing his / her name, the child replies “yes, Mrs. (the teacher's name)” and the teacher writes down whether the child is in school or not.

    And then at 9:10 a.m. the children attend an assembly in our main hall. They sit on the floor in rows with the youngest children at the front and the older children at the back. As the children enter the hall, they listen to music quietly. Each week we have a different musical theme (主题). Besides, the children also listen to stories.

    After the assembly, the first lesson of the day begins at 9:30 a.m. Our morning lessons are usually English and Maths. Each of these lessons lasts an hour. Between classes, the children have their morning break from 10:20 a.m. to 10:35 a.m. They eat their snacks (小吃) or play games like football on the playground. At the end of the break, the teacher on duty blows a whistle. The children stand still and wait to be told to line up.

    Each day, the children have their lunch break from 12 noon to 1:10 p.m. Most of the children bring their own packed lunches from home. A packed lunch usually consists of sandwiches, fruit, a drink and a packet of crisps. Some children have a school dinner cooked in our school kitchen. While the children are waiting to have lunch or after they have finished eating, they play games on the playground or attend lunch-time clubs. We have teachers on duty, who look after the children during lunch breaks. After the lunch break, the children have afternoon lessons, which continue until 3:15 p.m. when the children go home.

    Be careful what you say around your dog. It might understand more than you think.

    A border collie named Rico recognizes the names of about 200 objects, say researchers in Germany. The dog also appears to be able to learn new words as easily as a 3-year-old child. Its word-learning skills are as good as those of a parrot or chimpanzee(黑猩猩).

    In one experiment, the researchers took all 200 items that Rico is supposed to know and divided them into 20 groups of 10 objects. Then the owner told the dog to go and fetch one of the items and bring it back. In four tests, Rico got 37 out of 40 commands right. As the dog couldn't see anyone to get clues, the scientists believe Rico must understand the meanings of certain words.

    In another experiment, the scientists took one toy that Rico had never seen before and put it in a room with seven toys whose names the dog already knew. The owner then told Rico to fetch the object, using a word the dog had never heard before.

    The correct object was chosen in seven out of l0 tests, suggesting that the dog had worked out the answer by process of elimination(排除法). A month later, Rico remembered half of the new names, which is even more impressive.

    Rico is thought to be smarter than the average dog. For one thing, Rico is a border collie, a breed (品种) known for its mental abilities. In addition, the 9-year-old dog has been trained to fetch toys by their names since the age of nine months.

    It's hard to know if all dogs understand at least some of the words we say. Even if they do, they can't talk back. Still, it wouldn't hurt to sweet-talk your dog every now and then. You might just get a big, wet kiss in return!

How to not be a slave to technology

    Schwartz, CEO of The Energy Project, shared four of his most important tools for applying technology more productively, and building a work life that supports—rather than wastes—your energy.

    Build daily rituals (习惯).{#blank#}1{#/blank#} Build highly specific behaviors that you do at precise times over and over again until it becomes as automatic as brushing your teeth at night. The best way to prioritize (优先考虑) what's important to us and make sure we actually do the things we care about is to create highly specific habits.

    Take a “first things first” approach to your mornings.{#blank#}2{#/blank#} Ninety-five percent of people have more energy early in the morning than they do as the day wears on, and they also have fewer distractions(干扰). So if that's the case, why wouldn't you do the most important thing when you have the most energy?

    Use technologies selectively. If you expose yourself to different forms of technology continuously, they will pull you in the way a drug would, even when you know it is not serving you well. Keep technological temptations (诱惑) away when you find yourself getting too distracted—or as Schwartz puts it: “{#blank#}3{#/blank#}”

    {#blank#}4{#/blank#} Many of us live our lives in a gray zone—were not fully focused on work when were working, and during our leisure time, we're not fully relaxed. This leaves us feeling distracted. Schwartzs advice? {#blank#}5{#/blank#} Applying less than your full focus doesn't just make you less productive; distraction keeps you from being fulfilled by and connected to your work. Distraction is the enemy to meaning.

A. Be intentional with your energy.

B. Do the most important thing first every day.

C. Taking breaks throughout the workday is a nice thought.

D. If you're trying to lose weight, don't have cup--cakes in the fridge.

E. We've crossed the line of being able to effectively manage all of the information coming at us.

F. When you're working, you're really working; and when you're relaxing, you're really relaxing.

G. The only way to ensure that things that aren't urgent but are important happen is to develop habits.

    I have some gray hairs. Do l dare to count them? Just the fact that I have enough to count scares me, and turns getting old into a reality. I'm certainly getting older. We all are. But why does it have to happen so quickly?

    We just celebrated my birthday. I say "celebrated" because we had cake and ice cream. For my kids, any excuse for ice cream and cake is a celebration. I'm not sure if to me it was a thing to celebrate, though. I like the special attention that birthday bring, but I don't wait for them 364 days of the year like my children do. For them, another number means more privileges and more things that they get to do. For an adult, another number means fewer things. that you can do, like "I can't run as fast as I used to…etc. "

    I went with my children to the old-age home near my apartment building. We walked inside the door. The contrast between my preschoolers full of energy and the old women siting in the wheelchair by the door made me lost in thought. Not so long ago, I was a bouncing preschool like my children. Not so long ago, there women were the mothers of small children. Fifty years ago, they were me, and in fifty years, I could be them. The visit, like my birthday, served as a reality check. "Life is so short and it goes by so quickly. Enjoy the moment that you are in, because you will never get it back, "I told myself.

    This is also what I want to leave behind to my children. I decide to try to start just by not complaining. In any difficult situation, I will try to find the good things about it, no matter how small the good things might be.

    Many of the most memorable ad campaigns nowadays tend to be funny. Advertisers use this strategy to attract customers to their products. Audiences like to be entertained not forced. People will pay more attention to a humorous commercial than a factual serious one opening themselves up to be influenced. The key to funny advertising is assuring the humor is appropriate to both the product and customers. The balance between being funny and being obnoxious can often be delicate, and a marketer must be certain the positive effects outweigh the negative before an advertisement can be introduced.

    The best products to sell using humor tend to be those that consumers think the least about. Products that are relatively inexpensive and often consumable can be represented without providing a lot of facts, and that's where there's room for humor. Candy, too, food, and entertainment-related products such as toys have got the most benefits from humor in their campaigns. One of the most important things to keep in mind is relevance to the product.

    Another point to consider when using humor in advertising is that different things are funny to different people. A commercial that may make one person burst into laughter may leave a bad taste in another's mouth. The target market must always be considered, what's funny in a client presentation may not be funny on an airplane, at a country club or in hospital.

    Humor in advertising tends to improve brand recognition but does not improve product recall message credibility, or buying intentions. In other words, consumers may be familiar with a good feeling towards the product, but their purchasing decisions will probably not be affected. One of the major keys to a successful humorous campaign is variety. Once a commercial start to wear out, it's impossible to save ii without some variation on the concept Humorous campaigns are often expensive because they have to be constantly changed. Advertisers must remember that while making customers laugh, they have to keep thing interesting because old jokes die along with their products.