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Reprinted from 622007717 at 15:42 on September 28 2010 read (loading. ..) Comments (0) Category: American classroom
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I have talked about the second grade ore at the time to self-eight grade math. Later, we raised just like school, I said in the second grade ore can skip to the third grade to go every week to go to a third grade math class. I think the proposed skip to the third grade has been very modest,
handbags online, because he has will be the eighth grade math, the results of this school, teachers,
handbags online cheap, researchers and later to report the school district, which is equivalent to China's Department of Education, they did a study back after a letter. This letter, who said ore, said the Chinese school, he used what word? Arithmetic. Where it comes to American schools, he is a Arithmetic is the art of calculation, they considered fluff, and the mathematics, is learning about arithmetic, so to did not agree to skip a grade ore, he said, if you wish,
mulberry bags, you can go and borrow a book, your own at home, school, eighth grade, sixth grade, seventh grade will do. That acts as the school does not allow you to skip him, but how to do it behind closed doors is your own thing. -
the following three aspects we do the comparison. The first is the comparison of mathematics teaching. Please take a look at the road the subject. Elderly people living in the lake to a raised dogs and ducks, five heads and ten day old man saw four feet, the elderly dogs to see how much, how many ducks. The somewhat like our American teacher to teach the class how he does? Let's see how he taught. When the teacher came out this question out, many students raised their hands, have students say the answer is not difficult to find, as long as the establishment of two formulas on the line, a formula to solve the foot problem, a formula to solve the first problem. Later, the teacher let students set up the two formulas, let the dog is X, set duck for the Y, then four times X, plus squares Y, equal to fourteen. Another formula is X plus Y equals five. This formula is a set out, the students wanted to do according to this formula, the result, the teacher let the students to calculate, he said you do not count, do not use formula, you first guess the answer. Some students do not understand, why not let us have a formula for calculation, let us guess the answer, I hope you students, I hope you lost it. The teacher said, you make things difficult for the bar, could not answer Come on, do not know what medicine I sleeve it, the teacher said so well, you have no questions, then I ask you. The teacher began to ask questions, and five dogs four ducks, right. Students immediately said no, you said the five head, you duck it four five dogs,
mulberry handbags, it was nine head, no no. The teacher said, okay, okay, we look at the dog's feet and duck feet, from this side to do the article, then you look my classmates, I hope you, at a loss. The teacher said Well, if I tell you no less than four dogs, you think how? Students thought for a moment no, four dogs, four dogs four by four,
paul smith uk, four and sixteen would be more legs. Students say No, no, you said fourth leg is now sixteen legs, that unless the old man drunk, put his feet into a number. The teacher said no, not the old drunk was I drunk, then yes, it is not four dogs, five dogs, that is, the dog must be less than three. So let us look at the ducks, from the duck to make a fuss. Duck it, must be not less than three, because the dog is less than three, we said the first five, leaving the ducks to be not less than three, and three ducks is six by two, wrong. You do in this way,
designer handbags cheap, the answer is already clear. -
it this time, the teacher let the students do according to this formula, the results of the students come out soon, so come out after some students unhappy. He said the teacher, ah, did we use the formula to calculate it , a minute or two to make out, why do we spend a class period to push her, this is not correct, that is correct. The teacher said, you have a very good question, than this, the number of dogs than the number of ducks is more valuable issues. Another student said, I think not a waste of time, because you can not prove a problem is wrong you can not prove that another problem was right. The teacher was very pleased, he spoke these words to the . Everyone to see, math is not math class, more than a half-comprehended by the formula to calculate a formula can only tell you the answer, the formula tells you what to do, how to do it, we at best, like a calculator, to really understand why, why did it right, do it wrong, the problem is not so simple. -
we look at the red words, what we want is through deductive reasoning and inductive reasoning to prove or disprove some of the answers, and in the process, training and Exercise reasoning. So, my question is what, my question is do you think this is waste time either laying the foundation or in the solid. -
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