Whenever I hear this sentence, an instinctive sense of responsibility will arise. How to improve the accuracy of students' calculation?
First, the significance and importance of calculation
1, calculation is the cornerstone of learning mathematics. Mastering calculation opens the door to the kingdom of mathematics. In teaching practice, I found such a phenomenon: although many students have mastered the calculation method, they often make mistakes in calculation, and the accuracy of calculation is very low.
This not only directly affects the learning effect of application problems and application problems, but also seriously hinders the improvement of students' math scores. Therefore, it is necessary to improve the accuracy of students' calculations.
2. A person's life generally goes through infancy, student period and adult period, and counting and calculation play a very important role in each period. Let children master some superficial knowledge of numbers and calculations, so as to correctly understand the objective things around them and express their thoughts clearly in language.
As students, numbers and calculations are the basis for students to further study mathematics and other scientific knowledge. As an adult, computing ability is a basic ability for people to study, work and live, and it is also a basic standard to measure a person's quality.
3. Primary school mathematics test questions, involving calculation content, account for more than 85% in a test paper. In this sense, it is a very important aspect of primary school mathematics teaching to strengthen calculation teaching and effectively improve the correct rate of calculation.
It can be seen that numbers and calculations will accompany people's life. Most of the mathematical knowledge a person needs as an adult is learned in primary school.
Therefore, it is lifelong benefit to learn the basic knowledge of number and calculation well and form a certain computing ability in primary school.
Second, raise awareness of change.
1. Teachers thoroughly understand the teaching materials, master the teaching requirements of each grade, grasp the key points, difficulties and key points of computing teaching, refine the language in the classroom, strive to be infectious and clear in teaching ideas, and build a correct and clear knowledge structure in students' minds. Pay attention to the cultivation of study habits at ordinary times.
2. In order to make students realize the importance of calculation, we conducted a survey: let students collect common mistakes in calculation by themselves, or work in groups to find out the mistakes. The enthusiasm of the students was mobilized and the problems were shaken out:
"The title is wrong, scrawled. 6 and 0, 1 and 7 are ambiguous;
When the columns are vertical, the numbers are not aligned, and so on.
"Don't make a draft when calculating.
"One-digit addition and subtraction calculation errors lead to errors in the whole question.
"I don't concentrate when I do my homework.
Third, analyze the reasons.
1. Now some students' calculation mistakes seem to be mostly caused by "carelessness". What are the reasons for "carelessness"? There are only two aspects: one is that children's physical and mental development is not mature enough, and the other is that they have not developed good study habits.
Education can guide and promote children's physical and mental development, and the cultivation of good study habits can also help children's physical and mental development. Habits formed from childhood will definitely affect your life. Therefore, cultivating students' good study habits is the requirement of quality education and the premise of improving calculation accuracy.
2. Some students' calculation accuracy is not very high, which reflects that their calculation ability needs to be improved (for example, they are not familiar with multiplication formulas and carry addition, etc.). ); It may be the lack of a good calculation habit (or study habit), such as the habit of checking (most students hand it in as soon as they finish); Many students ignore the role of "estimation" in calculation. This may be because we usually teach more and practice less.
Fourth, formulate measures.
1. For teachers:
First, we should adopt flexible methods in time to teach students in accordance with their aptitude, such as making up for vacancies, making up for differences, answering questions, counseling, etc., and distinguish situations, correct calculation errors, improve calculation accuracy, cultivate students' good learning attitude and calculation habits, thus improving teaching quality.
Second, do a good demonstration and set an example. Teachers are role models for students. The blackboard writing in class conforms to the standard, so as to teach by example. Students should set an example in commenting, homework and marking test papers, and teachers who ask students to be teachers must do well first.
Third, always encourage and persevere. It takes a long time to develop good computing habits. In order to insist on strict requirements, students must be constantly encouraged to identify with the strict requirements of teachers, and keep a lasting interest in implementing calculation norms, thus gradually forming habits.
For example, at present, we have not relaxed the cultivation of calculation consciousness in the volume teaching of cylinders. Most students are required to simplify the operation steps and improve the calculation accuracy by using simple calculation and rounding 25 to 4.
2. For students:
First, according to the general order. Find out the meaning of the problem, observe the characteristics of the problem and determine the operation order.
Secondly, we should form the good habit of careful calculation. The data is clear and the drafts are arranged in a certain order.
Third, don't blindly pursue high speed. Slow is better than wrong, and less is better than scolding. Therefore, in addition to teaching according to the teaching progress, we also arrange two calculation problems (one for clearance and one for simple calculation) every morning in the sixth grade, and attend classes for 5 minutes every day. The school has a calculation and oral calculation competition every month, and there is an examination for the calculation part in the grade.
5. The teaching situation shows that the accuracy of students' calculation is directly proportional to their oral expression ability. In many years of teaching, we should implement classified guidance, strengthen training, step by step, improve the accuracy of calculation by improving the ability of oral calculation, and achieve ideal results.
Oral arithmetic training is:
1, basic training scores are added, subtracted, multiplied and divided by oral calculation.
2. Orientation training
The big number in the denominator is a decimal multiple. Two fractions, the denominator is a prime number. The denominator is neither a prime number, nor a large number, nor a decimal.
A multiple of a number.
3. Memory training
The content of advanced computing is extensive, comprehensive and comprehensive. Some common operations are often encountered in real life. These operations
It's nothing special.