1. 1、 Guiding ideology: the new curriculum standard points out that "to enable students to correctly carry out four calculations of integers, decimals and fractions, and to achieve a certain degree of proficiency in some basic calculations, and graally achieve reasonable and flexible calculation methods.". Primary school calculation teaching runs through the whole process of primary school mathematics teaching, which is the basic knowledge and skills that primary school students need to master in learning mathematics. One of the main tasks of primary school mathematics is to cultivate and improve students' computational ability. Efforts should be made to cultivate students' computing ability so as to promote the reform of ecation and teaching and improve the quality of ecation and teaching. 2、 The significance of the research: calculation is one of the important contents of mathematical knowledge, mathematical calculation ability is a basic mathematical ability, and calculation ability is an important basis for learning mathematics and other disciplines. Calculation accounts for a large proportion in primary school mathematics textbooks, and the level of students' calculation ability directly affects the quality of students' learning. To improve students' computing ability is helpful to cultivate students' mathematical literacy, the ability to solve problems, and the quality of being earnest, meticulous, patient and fearless of difficulties. Therefore, how to improve the calculation ability of primary school students has become an important problem in primary school mathematics teaching. 3、 The purpose of the research: through the research of this topic, while effectively recing the burden of students, efforts should be made to improve the calculation ability of primary school students, cultivate students' oral calculation, estimation and written calculation ability, and develop good learning habits. Make students in lively, relaxed and happy learning slowly like mathematics, interested in calculation. So as to improve pupils' academic performance, lay a solid foundation for students' future study. 4、 The measures of project research: 1. 2. Carry out teaching research reflection activities, constantly research and reflect in Teachers' daily teaching, and accumulate successful teaching cases. 3. Carry out classroom teaching discussion activities with the theme of improving students' computing ability. 4. Do a good job in routine teaching, starting from the details. ① Strengthen the teaching of calculation, teach new courses well, guide students to explore actively, and thoroughly understand the principles of calculation. ② Usually practice strict requirements, develop a good habit of calculation. ③ Cultivate students' good habits of conscientiousness, carefulness, neat writing, standard format, careful examination and analysis. ④ Cultivate students' habit of checking calculation consciously and correcting mistakes independently. ⑤ Cultivate the habit of summarizing and reflecting. Students should prepare a wrong problem book, and extract some mistakes from their homework in their own wrong problem book, and write down the reasons for the mistakes and the ways to correct them. Students can communicate with each other, often doing so can learn from the usual lessons, and avoid or rece the mistakes in the future study. ⑥ Strengthen the practice, use a variety of forms, so that students form skilled skills. 5. Collect and summarize the research records and data. 5、 The contents of the research are as follows: 1. The reasons for the slow speed and low accuracy of students' mathematical calculation. 2. Find the teaching breakthrough and teaching training methods that can improve students' mathematical calculation speed and accuracy. 6、 The implementation steps of the project: (1) the first stage (2009.11-2009.12) preparation stage 1. Collect the materials accumulated in the teaching practice, study the students' difficulties and obstacles in the calculation habits and methods, and carry out the relevant investigation. 2. Draft and formulate the implementation plan of project research activities to improve students' computing ability. Determine the objectives, contents, measures and methods of the research 2 The second stage (2010.01-2011.07) is the research implementation stage 1. According to the research content proposed in the research plan, the research work is fully implemented. 2. Make a systematic investigation on the current situation of students' learning habits and learning methods, focusing on the cultivation of students' general learning habits and the guidance of learning methods. 3. Research on the cultivation of students' developmental learning habits and the guidance of learning methods. 4. Implement the research plan, organize discussion and research according to the results of investigation and analysis, put forward some strategies to improve students' computing ability, and try to implement them. 5. Take specific measures to strengthen the training of students' computing ability, enhance students' self-confidence and cultivate students' interest in mathematics. 6. In the process of research implementation, read and refer to relevant theoretical books, write reading notes, cases, ecation essays, etc. 7. Do a good job in data collection and sorting 3 The third stage (2011.08-2011.10) summary stage: sorting out the data, analyzing the research, completing the summary and refining of the research results, forming the research report, and applying for the final acceptance
2. Yes, the central bank is going to issue
digital currency to replace M0 and RMB
3. Yes , at about 4:00 on June 18, 2020, Zheng Yiwei cut his daughter's neck with a sharp knife on the bed of the bedroom in the middle and south of his home in a community in Shahekou District, causing his daughter to die of massive bleeding. After wrapping his daughter's body, he came to the No. 18 pier of Xinghaiwan bridge and threw her body down the bridge. Later, Zheng and his wife Wang committed suicide by jumping into the sea. Zheng attempted to commit suicide. At about 10:00 on June 18, he took the initiative to account for the fact of the crime in the second hospital of the University of medicine
Zheng said that after graating from University, he has been engaged in freelancing "playing finance". bitcoin is his main investment project, making a lot of money and worth tens of millions
however, the huge fluctuation of bitcoin has brought a disaster to Zheng Yiwei. By the beginning of June this year, he had lost more than 20 million yuan e to using capital leverage to participate in speculation“ The money includes four million from my parents and 500000 from my father-in-law and mother-in-law. The rest is my savings and money borrowed from my relatives over the years. " Zheng said
once the hard-working family property was lost, it also owed a large amount of debt to close relatives and friends. Zheng Dawei is going to commit suicide< he said that at first he only intended to die by himself, but later his wife tried to persuade him, but to no avail, and the couple decided to "go together"
faced with the public prosecutor's question, Zheng explained that because of the idea of "want a family together", the couple decided to kill their own daughter first, and then commit suicide by jumping into the sea together. On June 17, he bought sleeping pills at the pharmacy and fed them to his daughter by his wife. Zheng said that before killing his daughter, he had "no heart and hesitated" and first stabbed the plush toy beside the child with a knife
at the end of the trial, the defendant Zheng said that he confessed to the crime of killing his daughter, and said that his wife's suicide was also caused by himself, hoping that the court could give him a heavier sentence
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extended data
bitcoin continues to rise sharply. Analysts warn that we need to be careful about the sharp correction in the future:
Tom Demark, a well-known digital currency analyst, said that bitcoin has a total of 9430 points from the high on June 26, 2019 to the low on March 16, 2020. If we add 9430 points to the level on June 26, 2019, Then, it is expected that the price of bitcoin will rise to 23288, which is the current trading range in the market
although bitcoin is expected to recover soon, Demark also admits that if investors continue to pour in, bitcoin may continue its earnings and ignore the signal that the current trend is running out
Matt Maley, chief market strategist of Miller Tabak asset management company, pointed out that since 2016, bitcoin has fallen 20% or more for 10 times, 30% or more for 7 times, and 48% or more for 4 times. Therefore, investors should not underestimate the volatility of bitcoin
4. virtual currency does have a certain value, but its own economic risk is very high, so it is not recommended as a key investment object
in fact, it's not just this couple that has happened to virtual currency. In the early years, bitcoin became one of the most important virtual currencies in the dark network because of its good concealment, because bitcoin is a kind of currency that can't be traced and traced. At the earliest time, bitcoin could not only be used for some dirty transactions, Buying pizza, buying games and even buying a bottle of mineral water can be paid with bitcoin, which can be said to be a universal currency{ RRRRR}
therefore, investment has risks, so we must choose the investment target and direction carefully. The exchange rate and value of virtual currency are too erratic, and we can't know if there is someone behind it. We should develop a rational financial mind, accumulate wealth reasonably, and don't become the leek of others
5. Gambling money has the risk of ruin, because it may become rich overnight, or it may have nothing overnight. This risk is too big for ordinary people to bear, so we should not gamble money.
6. To tell you the truth, speculation, no matter what currency, is the origin of bitcoin. The most important thing is that they have no real value and do not have the basic conditions of general equivalence. It is completely based on deception and unequal information.
7. You are so awesome. I'm in debt for 700000 yuan. I don't know what to do! There are old people on the top and small people on the bottom! I'm also a state-owned enterprise. I have so much salary. How can I return it? I regret it!!
8. At present, the relevant courts have adopted & lt; Illegally depriving others of their lives and causing one death, suspected of intentional homicide; Dutch act of the suspect sued the attempted suicide suspect. And the suspect also said , hoping that the law can make a heavier decision on himself.
in this case, the couple was very irresponsible because they illegally deprived their children of their lives. Even if you don't want to live, you can transfer your child to others. There's no need to kill your own child. And the wife's practice is more wonderful, persuasion is not successful, even decided to commit suicide together. The suspect, even if the loss of about 20000000, so that he owed his relatives and friends owed a huge sum of money and paid all the property, but also through subsequent efforts to repay the debt. p>
