You,amp,#39,Mathematical,Geniu education You're A Mathematical Genius, You Know!
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===========================================================You're A Mathematical Genius, You Know!(c) Copyright 2003 by Murdo Macleod===========================================================This may come as a surprise to you.But the truth is, you really are good at mathematics.You see, every day you solve complex problems by breakingthem down into tiny little "baby steps".And just like the world's most powerful computer or thegreatest ever mathematical prodigy, it's this step-by-stepprocess that enables you to do practically anything.Let's see this process in action with a couple of examples:* * * Example 1 - Calculating the Dreaded Sales TaxThe sales tax rate varies around the world, but here in theUK it's 17.5%. Urgh! What kind of figure is that?Let's look at it again and see how we can tame the beast bybreaking it down.17.5It consists of 10, plus 5 plus 2.5, doesn't it?And those numbers form a distinct sequence. In otherwords... "10, plus half, plus half again".Now that we know this, we can do something really clever...Suppose you want to calculate 17.5% of 40 UK pounds. Howwould you work this out? (Stop! Don't even think ofreaching for that calculator!)Start with the 10. 10% of 40 is 4. Add half (2) andhalf again (1) and you get 7.So you proudly announce to your colleagues... "So by adding17.5% sales tax to our £40 product, the total retail pricewill be... £47."They look on amazed.Let's take another example and show how simple math reallyis...* * * Example 2 - Help your daughter with her homework.You arrive home and your daughter needs some help with hermath assignment. It's those darn fractions again.She just can't make sense of them."A half times a half is a quarter. So how, when you multiplythings together, can you have LESS than you started outwith!"You explain that multiplication and division are two sidesof the same thing, and you make it "real world" for her witha little analogy:You get her to imagine a cake.You remind her that "multiplying by half" is another way ofsaying divide by 2. So she pictures herself halving thecake, giving one piece half to her friend Jane, and keepingthe other half.You daughter now has half a cake.She multiplies her piece by a half (i.e. "divides it intotwo again") and she's left with a quarter.She goes off to bed happy, dreaming about birthday cake Andyou get to watch the ball game on TV.Again, it's just a matter of simplifying.------------------------------------------------------------Real world math is not about mental agony, or learningmechanical formulas that you follow mindlessly like a robot.It's about common sense, seeing how numbers really work, andbreaking things down.You just need a little imagination. After all, that's whatgenius really is.------------------------------------------------------------Murdo Macleod is a reformed calculator user and co-author ofthe 'Fun With Figures' mental math course. Come and seewhat parents, students, home schoolers, business people, andmath phobics around the world are raving about:http://FunWithFigures.com/------------------------------------------------------------
You,amp,#39,Mathematical,Geniu