narcissism
Nowadays, with the continuous improvement of social material civilization, junior high school students have a broad vision and a wide range of knowledge, but they lack the test of setbacks, like self-appreciation and narcissism, and are dominated by this self-feeling mentality in their studies.
(B) a fixed way of thinking
The fixed mode of thinking (that is, the mindset) has both positive and negative effects in the operation. When students master a certain method to think, there will inevitably be thinking inertia, which will affect the operation speed and make the operation process complicated.
(C) the basic knowledge is not solid
The basic knowledge is not solid enough, the concept understanding is not thorough enough, and even a little knowledge leads to mistakes that should not be made when doing the problem.
Some parents think that the problem is wrong, because students are young and easy to be "careless", which is not only careless, but also thinking reasons.
(d) Lack of comparative awareness
Comparative consciousness is an important direction to solve problems, and there are often many ways to solve problems, which requires us to be good at choosing the best and following it. Some students lack comparative consciousness. When doing problems, they often try to do it with death. Even if it is boring, they don't care. They just thought it was the right thing to do. Teachers should pay attention to choosing the best among various methods when commenting.
Computational ability is a basic mathematical ability, and it is ranked as the first of all mathematical abilities, whether in the teaching syllabus or examination notes of middle school mathematics. Therefore, how to improve junior high school students' mathematical operation ability is something that every math teacher should attach importance to and cultivate. Mathematics teachers can cultivate students' computing ability from the following aspects:
First, enhance awareness and stimulate interest
Mathematics is closely related to life, and mathematics is everywhere in people's lives. Give more examples related to real life to make students realize the importance of learning mathematics well. Interest is the best teacher, the power for people to acquire knowledge and skills, and the source of motivation to promote learning. To improve students' computing ability, one is to combine the operation and practical application of numbers with computer networks, so that students feel that computing is not a simple and boring number game, but to solve specific problems or difficulties encountered in their own or others' lives.
Second, strengthen the teaching of basic knowledge and skills to improve the accuracy of operation. In teaching, basic knowledge is the basis of arithmetic and has guiding significance for operation. The confusion and fuzziness of basic knowledge are often the root causes of operational errors, so it is a very realistic problem to strengthen and implement double-base teaching to improve operational ability. Especially junior high school students, time is tight and tasks are heavy. Neither teachers nor students pay much attention to the cultivation of computing ability. Take a look at the math problem and you will know how to solve it. In fact, the rationality, correctness, simplicity and timeliness of calculation play a vital role in students' test scores, so we should further strengthen the calculation ability and let students realize the importance of calculation ability and the standardization of writing.
Third, pay attention to cultivate good study habits.
Cultivating students' good study habits is an important requirement for mathematics teaching in the new curriculum standard, and students' study habits are also an important factor related to the level of computing ability. Mathematics curriculum, because of its rigorous characteristics, allows no students to be careless and careless. Students make mistakes in calculation, partly because of bad study habits. Therefore, the requirements for students in teaching are: careful observation, careful examination of questions, careful copying of questions, and multi-angle inspection after completing the questions; Strict requirements for Arabic numerals and operation symbols, and standardized writing. If students are required to develop good study habits, they can avoid some unnecessary mistakes and really "escort" the calculation.
Fourth, cultivate students' self-confidence and interest.
In class, students' calculations should be evaluated in time, but it should be remembered that teachers should not do what students can do through hard work, even if they can't, they just need to give appropriate guidance. At the same time, we should cultivate students' good habits of "sharp eyes, accurate hands, clear handwriting and timely inspection" in class.
Fifth, pay attention to the teaching of arithmetic and strengthen the comparative analysis of algorithms.
Correct algorithm is the fundamental guarantee to improve the calculation accuracy. Only when students know the law of calculation can they master it firmly and calculate correctly.
Science teaching can't be ignored. Furthermore, in order to let students master the correct calculation rules, we should often practice some problems that are easily confused by the algorithm, so that students can distinguish right from wrong and "enhance their strength" from the opposite side.
Six, one question is changeable, one question is multi-solution, and the proficiency of operation is cultivated.
The proficiency of mathematical operations is mainly manifested in the ability to perform operations quickly and reasonably. Some students often just memorize formulas and rules mechanically, and as a result, they spend a lot of time and can't get accurate results. Encourage students to solve more than one problem and strengthen the teaching of quick calculation. The solution to the multi-step calculation problem is not "all the way from ancient times to Huashan", and many problems have more than one solution. Among many solutions, there must be a "correct and fast" solution. This algorithm depends on the decomposition and combination of integer ten, integer hundred and integer thousand, and on the application of the laws and properties of the four operations. Teachers should always encourage students to solve multiple problems, actively explore quick calculation methods and calculate flexibly. If the method is alive, it can turn the difficult into the easy and simplify the complex, thus achieving the purpose of improving the calculation speed. It should be noted that in the application process, the purpose of operation is not necessarily to pursue a simplified result, but to serve certain reasoning, deduction and judgment.