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When you are busy doing piles of math homework， have you ever stopped and thought about one question：why do we need to learn all this math anyway？

    It's an interesting question． Kids around the world （1）　　 it for ages． For US students， they may get the answer from a new show called "MathAlive!"． It has 47 interesting activities designed to teach kids how math （2）　　in our life． For example， at one show station， visitors test the theory that a person's arm span（臂展） equals the person's height． At another station， math skills help visitors （3）　　the NASA robot outside a space station virtually （虚拟的）． By doing such activities， kids learn why math is important in our life．

    Where else can you find math used every day？ Actually， if you go down deep enough into anything， you（4）　　 math． Think of simple things， like clocks． They tell time， but only if you know how to read them． That means using math． How much longer until school ends？ How long did I sleep last night？ That's all math． When you go shopping， you do lots of math， too．

    Even when you （5）　　 math， it's all around you． The computer you use to surf the Internet is a machine to do binary math very fast． The house you live in is designed by people who use lots of geometry（几何学）． So enjoy math， not for exams， but for the wonderful world's helps to build．

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