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Parents first need to make it clear that the proficiency in calculation and understanding of arithmetic theory are the two most important factors in the speed of calculation.
Then the problem is easy to solve.
The trick is nothing more than two points, one is repeated practice, and the other is to understand arithmetic. The two main points are easy to say, but they are not easy to do.
The first is repeated practiceIn this regard, I believe that it goes without saying that parents also understand the importance, but repeated practice is a time-consuming and brain-consuming thing, not simply let children do a lot of the same questions, but let children be interested and persist in doing it for a long time, which is to consider the diversity and interest of question types.
The second is to understand arithmeticThis is often overlooked, and it takes more effort for children to figure it out. For example, in the fourth grade, when learning distributive properties, there are a lot of exercises in applying distributive properties to do clever calculations, such as.
23 * 37 + 23 * 63 = 23 * 37 + 63) = 23 * 100 = 2300, if we ask, what is the principle of the distributive law? Why does multiplication have a distributive property? Why can we use the distributive law to do such a clever calculation?
How many parents and children can be accurate?
For example, in the fifth grade, I learned the multiplication and division of fractions, 3 5 2 3 = ?Parents know that dividing by a fraction is equal to the reciprocal of multiplying the fraction, 3 5 2 3 = 3 5 x 2 3 = 9 10
So everybody is able to calculate the correct result. But if we ask again, why is it that dividing by a fraction can be equal to multiplying by the reciprocal of this fraction? Why is the multiplication of fractions numerators by numerators and denominators multiplied by denominators? 90% of parents will be stunned.
Finally, say goodbye to blind brushing questions, fun and fun is the best way to learn
In traditional arithmetic learning, most parents equate arithmetic with calculation, but only emphasize mechanical practice memorization, being able to calculate, and being able to calculate correctly. However, this could not be more wrong! We often say that mathematics cultivates children's thinking, so let's ask:
In such a mechanical way of learning calculations, what kind of mathematical thinking do we cultivate in children?
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First, it is necessary to talk about the principles and laws of liquidation.
The arithmetic is clear, the rules are firmly remembered, and when you do the four calculation problems, you can proceed in an orderly manner.
Elementary school students encounter arithmetic theories such as: the composition and decomposition of numbers within 10, the method of making up tens and breaking tens, the concept of adding the same number, decimal notation, the concept of numbers, the meaning and nature of decimals, the change of decimal size caused by the movement of the decimal point, the change law of product and quotient, the meaning and nature of fractions, the concept of fractional units, the relationship between fractions and divisions, and the concepts of division and general fractions.
All of the above basic knowledge should be explained clearly so that students can leave a deep impression so that they can play a positive role in the transfer of knowledge when learning new knowledge. For example, the knowledge of "the law of the change of decimal size caused by the movement of the decimal point position" is very important. It should be used when explaining the calculation rules of decimal multiplication and division, and the mutual transformation of decimal and percentages.
The concept of fractional units is also inseparable from it when explaining the calculation rules of addition, subtraction, multiplication, and division of fractions. If students can master these two parts of knowledge very proficiently, they can learn the four calculations of decimals and fractions in order to progress smoothly.
Second, it is necessary to clarify the order of the four mixed operations.
The order of operation refers to the operation of the same level from left to right, in the equation without parentheses, if there is addition, subtraction, multiplication, division, multiplication and division, to calculate multiplication and division first, then add and subtract; If there are parentheses, the ones in the parentheses should be counted first, and then the ones in the middle brackets. The order of the four mixed operations of decimal numbers and fractions is exactly the same as the order of the four mixed operations of integers, therefore, it is very important to clarify the order of operation in the primary school mathematics textbook, the knowledge about the order of operation is scattered, the second semester of the first grade appeared in the addition and subtraction of the two-step calculation, the second semester of the second grade appeared in the two-step calculation of the two-step calculation problem, the second semester of the third grade learned the four mixed operation sequences (including the middle brackets), and the fourth and fifth grades continued to consolidate. Therefore, it is generally possible to grasp the comparison.
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I think parents mainly cultivate habits in their children.
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1. Stimulate students' interest in computing. In order to cultivate students' numeracy ability, teachers should first stimulate students' interest in computing and make them happy to calculate. In the teaching of computing problems, students are interested in creating situations that they are interested in, carrying out computing competitions, and selecting computing experts to stimulate students' interest in computing.
2. Pay attention to the connection between computing and life. Calculate the blind state ** in life, and serve life in Shenheng. Primary school students' thinking belongs to concrete thinking and needs to be supported by concrete things.
3. Quick calculation and trembling to do clever calculations, that is, what we usually call simple calculations, the correct use of simple methods, on the one hand, can improve the speed of problem solving, on the other hand, it can also make problem solving simple, improve students' self-confidence.
4. Strengthen practice and review in time. In order for students to become proficient in the methods of calculation and to perform calculations quickly and correctly, it is necessary to practice repeatedly over a long period of time. The fist does not leave the hand, the song does not leave the mouth, and the same is true for improving students' computing ability.
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1.Cultivate the habit of careful examination of questions. For practical problems, most children can still review the problems seriously, but for calculation problems, some children put pen to paper.
In addition, the calculation is relatively monotonous and boring, which is easy to cause psychological fatigue, and if you encounter similar or similar numbers and symbols, there are often errors in the order of operation, wrong symbols or wrong data. When cultivating children's habit of carefully reviewing questions, let children pay attention to the following three points: first, we should review numbers and symbols, and observe what characteristics and internal connections they have; Second, it is necessary to review the order of operations, and clarify what is counted first and then counted; Third, it is necessary to check whether the calculation method is reasonable and simple, and then start to solve the problem.
2.Develop the habit of careful inspection. Be patient and meticulous during the inspection and check them one by one.
One is to check the number symbols, and the other is to check the calculation process. It is summarized as a calculation habit of "one step at a time", and one step at a time when calculating, do a step back check step. Check whether the numbers and symbols are copied correctly, whether the numbers are accurate, etc., and ask the children to calculate patiently and meticulously according to various corresponding calculation rules to overcome carelessness.
3.Develop the habit of writing in a standardized manner. Train children to be patient, not impatient, think seriously, and be cautious even if they do simple calculations.
The calculation process should be neatly written and the format should be standardized, even if the calculation is calculated on scratch paper, it should also be written clearly to facilitate inspection. Pay attention to the norms of ordinary homework, let children write according to the format, handwriting is correct, not scribbled, not altered, not pasted, and keep the homework neat and beautiful.
4.Cultivate the habit of calculation and estimation. This is a guarantee that the calculation is correct.
Calculation is a kind of ability, but also a habit. First of all, it is necessary to master the methods of calculation and estimation; Secondly, the calculation should be strictly required as an important part of the calculation process; Thirdly, the child really knows how to use estimation to test the correctness of the answer.
Strengthen the connection between home and school and work together to improve children's numeracy skills.
Parents should pay attention to communicate with teachers to understand their children's learning in school, how accurate the homework is, where there are problems in computing ability, etc., only parents and teachers work together to achieve twice the result with half the effort.
To improve children's computing ability, it is necessary to be regular, planned, and step-by-step, to pay attention to speed in time, to have density in quantity, and to be flexible and novel in form and content.
Wise parents teach you to do this.
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Give your child more encouragement, help him build self-confidence, and make a good life plan. If the child has improved, praise the child in time and do not compare the child with other people's children. Cultivate children's interest in reading, and children will take the initiative to do it if they are interested.