Many children first learn the value of money by receiving an allowance. The purpose is to let children learn from experience at an age when financial mistakes are not very costly.

    The amount of money that parents give to their children to spend as they wish differs from family to family. Timing is another consideration. Some children get a weekly allowance. Others get a monthly allowance.

    In any case, parents should make clear what, if anything, the child is expected to pay for with the money.

    At first, young children may spend all of their allowance soon after they receive it. If they do this, they will learn the hard way that spending must be done within a budget. Parents are usually advised not to offer more money until the next allowance. The object is to show young people that a budget demands choices between spending and saving. Older children may be responsible enough to save money for larger costs, like clothing or electronics.

    Allowances give children a chance to experience the things they can do with money. They can share it in the form of gifts or giving to a good cause. They can spend it by buying things they want. Or they can save and maybe even invest (投资) it.

    Saving helps children understand that costly goals require sacrifice: you have to cut costs and plan for the future. Requiring children to save part of their allowance can also open the door to future saving and investing. Many banks offer services to help children and teenagers learn about personal finance. A savings account is an excellent way to learn about the power of compound interest (利息). That may not seem like a lot. But over time it adds up.

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House Sitting

    In many countries of the world people do what is called house sitting. It means that if owners of the house are going away, they want someone to come into their home and look after the house and maybe pets while they are away.

    In Australia, many people travel. After people retire, they might buy a van and travel all over the country. {#blank#}1{#/blank#}

    So if someone wants to travel or go away for some reason, they might want someone in their home to care for it and keep the gardens tidy. House sitters might have to care for pets. Also, quite a few people have swimming pools in their back yard and they need cleaning. {#blank#}2{#/blank#} I feel it is a great way of seeing the country, because you go and stay in a new city, get to meet new people, and have time to go sightseeing in a new area.

    {#blank#}3{#/blank#} There are websites where you find the advertisements by people who want to travel, and by replying to the advertisement, you can make arrangements to go and look after their home.

    There are some requirements to be a house sitter. You must be a trusted person, so that the home owner knows you will not steal anything. You must be able to go when the house owner wants you to go, so you need lots of free time. {#blank#}4{#/blank#} You need to be good with pets, able to care for cats and dogs, or other pets they may have.

    Some house sitting jobs are just for a few days or a couple of weeks while the house owners have a short holiday. Sometimes it is for much longer. We have had one house sit for six months, while the home owner travelled to Europe.

    {#blank#}5{#/blank#} Then you can travel to many different countries and stay there. One of  the important things to get is references from the home owners where you have stayed. A reference is a written letter to say that you are trustworthy and have looked after their home well. You can show these letters to possible house sitting jobs and they know you will do a good job.

A. I have done house sitting many times.

B. Thousands of people do this all the time.

C. It is also possible to do house sitting in other countries.

D. Generally you have many opportunities to get a house sitting job.

E. You must take a little care over what your description says about you.

F. This is an international house sitting service for all city and country areas.

G. You must have a good car, so you can travel to different parts of the country.

    Maybe it has been the influence of the current scene: the type among urban biking. Apparently, urban biking requires entirely different bikes than suburban hiking does and therefore a Bike Design Project started where five design studios across five cities had to come up with a perfect urban bike. The winning bike will be manufactured for a limited run of 100 hikes and will be in stores next year. Industry, a Portland-based studio, came up with a very interesting bike: one that uses bluetooth and handlebars (车把手) that tell you when to stop or turn.

    Industry worked together with Ti Cycles to create a bike with a 3D printed titanium frame (钛框架). The hike is called Solid and can be connected to a smartphone APP: My Bike. This APP alarms a user when a light needs replacement and if something gets wrong with one's brakes. There is also software called Discover My City, which has a series of routes through Portland's most trendy neighborhoods, with suggestions about where to eat and shop.

    Nevertheless, the idea with cycling is that you need to focus on the road and not on your smartphone. This bike therefore uses integrated feedback on handlebars. Those handlebars tell a user when to turn, as they will buzz when a turn appears. As you are getting closer, they will buzz more frequently. And then there is the possibility to control your light via built-in sensors and change gears by pressing an electronic button.

    Although the bicycle looks highly interesting and can be seen as a piece of art for the designing world, we don't know if we would like our bike to have an automatic buzz when we are approaching a turn. On the other side, it could add some extra safety to traffic in general. Whether you like the bike or not, you have to admit the Portland-based studio brings the concept of urban biking to a whole new level.

    A new algorithm(演算法)raises parking rates in busy neighborhoods and lowers them elsewhere, guaranteeing free parking spots regardless of location, Christopher Intagliata reports.

    If you drive in a city, you've no doubt experienced the headache of circling block after block, cruising for parking. But scientists who study that phenomenon have a solution to free up more spots: “You make them more expensive, so people have to decide whether to park farther away and Pay less, or closer and pay more.”Itzhak Benenson, a system scientist at Tel Aviv University.

    San Francisco has piloted a program that raises parking rates based on demand—and it's been shown to reduce cruising. But the sensors required for those systems can cost millions of dollars to install and operate, Benenson says. So instead, writing in IEEE Intelligent Transportation Systems Magazine, he and his colleague Nir Fulman describe an algorithm that can determine smart pricing, without the use of sensors.

    They tested it on the Israeli city of Bat Yam, near Tel Aviv. First, they divide the city into zones. They estimate the parking demand in each zone, by calculating the number of apartments and offices there. Then they take account of parking supply in the area, along with how wealthy potential parkers might be. Using that data, the algorithm suggested pricing for each zone that would guarantee a 90-percent occupancy rate of parking spots city-wide. Meaning 10 percent of spots were always available to drivers willing to pay the price, regardless of neighborhood.

    Of course, not everyone will agree that raising parking prices will reduce the press of parking. Last time Benenson proposed hiking rates for city residents? “I got about 100 reactions on the web and 99 of them that said they have never heard such a stupid statement from the professors, and I should be punished and fired.”

    Eventually, he says, it'll be up to cities themselves to estimate their residents'political appetites for an easier parking spot.

    When Huang Lizhi took her first class in African sociology at the University of the Witwatersrand in South Africa in February, her professor asked her and her classmates what impresses them most when it comes to Africa.

    Unexpectedly, Huang, 31, found that words like "poverty" and "safari" – negative words that were often associated with the continent in media reports – were the kind of terms her African classmates didn't want to hear. Instead, they preferred to hear the question answered in this way: "Africa is the cradle of humankind" and "Africans are passionate and generous".

    Apparently, there are some misunderstandings between us. It's true that with incidents like the Ebola outbreak in Western Africa and the emergence (出现) of pirates off the coast of Somalia hitting the news, it's easy for us to keep forgetting that Africa has one of the world's oldest civilizations – Egypt, born by the world's longest river, the Nile. The proof is in the Great Pyramid of Giza and the Great Sphinx of Giza, which are both popular among tourists. And the tombs of ancient Egypt have also become endless sources for the literature and film industries.

    When it comes to the natural environment of Africa, our misunderstandings are only bigger. But the truth is that instead of being extremely hot all year and covered by desert, the continent has large areas of savannas (稀树草原) where lions, giraffes and zebras live, the snowcapped Kilimanjaro – the highest mountain in Africa – and even thick forest on the island of Madagascar. These misunderstandings are one of the reasons why the 2018 Beijing Summit of the Forum on China-Africa Cooperation was held on Sept 3 and 4 – to understand each other better.

    Indeed, only by visiting Africa herself did Huang see the convenient living conditions, the amazing natural beauty and the friendly people. In her eyes, her classmates were as hopeful about the future of their own countries as they were about Africa as a whole, and they were quick to demonstrate both their strong will and activity. "At that moment, I knew exactly what they wanted – they wanted their culture to be respected."

After years of teachers asking for the right answers, students aren't used to someone asking for the wrong ones. Students' failure tends to create mental burden that negatively affects learning. Lifting the burden requires us to face failure bravely and encourage students to accept it as a natural part of getting educated. While educators have to make sure that students have the right content and support to avoid long-term failure, it is just as important to accept mistakes as a normal part of education.

Sadly, our culture is so focused on success or perfection that students generally aren't taught about failure. To fill the gap, I share with students a Samuel Beckett quote "Ever tried. Ever failed. No matter. Try again. Fail again. Fail better". It suggests one becomes better after each failure. I also play a video on game designed by Extra Credits, which shows people can quickly declare their ways as a failure if they don't work out and then learn from. them to move on. Both the quote and the video can help students get a more positive attitude towards failure.

Teachers can help students accept failure better. In her piece "5-Minute Film Festival: Freedom to Fail Forward", Edutopia author Amy Erin Borovoy had a set of videos-and articles on the subject of failure. Borovoy reminds readers that "a true thinker learns as much from failure as from success." Taking these short videos as monthly or weekly reminders can, be a great way to start "how have we failed and what have we learned" discussions with students.

Teachers can actually use a technique called "Effective Failure" to teach about failure at any time. In my writing class, I often have students volunteer to pick out the worst writing of their own. This lets writers deepen their understanding of why a sentence, word choice, or paragraph construction has failed, and it inspires a sincere interest in better writing. This makes failure work well in class.

Also, remember that students are not the only ones who can learn from their mistakes. As those who teach students, we should do that too.