First, the understanding ability is weak and the question is wrong.
For junior students, the lack of literacy leads to the difficulty of examining questions, and there is another obstacle to the examination of practical problems in life, which is the weak understanding ability. Although kindergarten teaching cultivates children's observation and expression ability by looking at pictures and talking, and cultivates children's keen judgment and thinking ability through game teaching, after all, it is divorced from words, and few words participate. Therefore, when entering primary school, some children are not adapted, and it is difficult to combine unfamiliar words with simple understanding and analysis skills. Correct examination of questions requires correct examination of questions.
In view of such mistakes, our teacher should give full play to his language ability, find out key words and focus on reading questions. For example, the key word of the topic "Circle the animals that can swim in the water" is "swim in the water". When reading aloud, other words are difficult to recognize, as long as you read them correctly and pronounce them clearly. In addition, "clear positioning" is a difficult point. In the fill-in-the-blank questions with pictures and words, it is necessary and necessary to understand and emphasize the positions of the items in the pictures one by one, so that students can correctly judge the positional relationship between the items. For example, "On the left of the apple is ()" and "The car is beside the schoolbag". Obviously, the improvement of the understanding level of topic keywords will enable students to improve the correctness of solving problems, and will not circle, connect and fill in mistakes.
Second, the calculation error caused by misreading numbers.
Primary school students have a common fault in their study, that is, carelessness, but some students are careless occasionally, and some students often make mistakes. This is the enemy of learning and must not be ignored. When solving practical problems in life, students often make mistakes when copying numbers and formulas, and no matter how careful the calculation is, it will not help. For example, there are 23 ducks on the shore, and 4 of them have already swam away. How much is left? Some students will list it as 32-4 = 28 (only), but the correct formula should be 23-4 = 19 (only). In view of this mistake, teachers should emphasize that students should tell the number of people or things at ordinary times, so as to strengthen students' attention to numbers.
In addition, in the math activity class, teachers can also organize students to hold a "shorthand number" competition to improve their observation and memory. Teachers can read or generate numbers at a uniform speed within the specified time, and students can remember them one by one or one by one. You can gradually increase the number of digits, and the difficulty of remembering numbers is from low to high. Determine the ranking order by combining the correct number of records and the use time. After the competition, it is necessary to point out to the students that the purpose of the competition is to make them pay attention to all the figures appearing in the math problems, and never copy and calculate them indiscriminately, resulting in low grades. You must read them carefully before calculating them in tabular form.
Third, the obstacles caused by the level of calculation.
In fact, the calculation that occupies a considerable part in mathematical problems is very simple. As long as we take it seriously, we can work out the figures correctly. Although some students can correctly examine the questions in parallel, they will still get unsatisfactory results. The problem is that the calculation ability is weak, which hinders the understanding of the purpose of answering questions. For example, 1 class boys 18, girls 19. Some students mistyped it as 18+ 19 = 27 (person), indicating that students have problems carrying it.
In fact, calculation is very abstract knowledge, from concrete to abstract, from perceptual knowledge to rational knowledge, which is the basic law of human cognitive development. Junior students need "perception" in the learning process, and perception plays a particularly important role in the acquisition of primary school students' mathematical knowledge. Therefore, students should be allowed to use perceptual materials (learning tools) such as sticks and geometric figures to pose, speak, perceive and reason. Teachers should not learn by rote, but should pay more attention to the process of exploring knowledge and teach students the learning methods of acquiring knowledge. With the improvement of computing level, combined with the ability to observe pictures and analyze questions, it is no longer a problem to make and answer correctly.
Fourth, ignore the inspection and miss the opportunity to correct mistakes.
Pupils have to solve three problems in learning mathematics, one is their interest in learning mathematics, the other is their habit of learning mathematics, and the third is their ability to learn mathematics. Good math study habits, with its positive trend, directly affect students' learning process, learning quality and learning effect. In view of the phenomenon that students make mistakes in solving problems, in addition to general study habits, our teachers should also pay attention to cultivating students' good habit of introspection.
The author has been engaged in teaching in lower grades for many years, and found that there are many problems in students' homework, mainly in the following aspects: (1) Parents should accompany them when doing homework to help them read and check; (2) Doing other things while doing homework, such as watching TV, eating, playing with things and chatting. (3) There is no habit of checking after finishing homework, and there are even cases of doing less or missing homework. Teachers pay attention to cultivating students' habit of checking homework, which will greatly improve the correct rate of students' homework and avoid the above-mentioned bad phenomena. For teachers themselves, it will also improve work efficiency accordingly. The key is that the quality of homework has improved and the overall level of learning quality has also improved. There is a classic saying in the field of educational psychology: "sow an idea", sow an action and reap a habit; Sow a habit and reap a character; Sow a character and reap a destiny. "(Napoleon Hill) The cultivation of primary school students' study habits requires a" soft landing "in thought and a" hard processing "in behavior, which requires both guidance and training. In mathematics teaching, we should strive to cultivate students' good study habits, so that students can get on this sailboat with good habits and reach the other side of success smoothly.
In short, how to solve simple practical problems in mathematics in lower grades is directly related to the study of more complicated problems in middle and high grades. Based on the above reasons, we teachers should constantly explore more diverse and effective measures, carry out targeted teaching and constantly improve. Make up for the shortcomings in the previous teaching work. All educational actions are for one sentence: "Teaching is for not teaching." Our teachers should be good at finding and summarizing in time, and regard all mistakes in class and homework as first-hand valuable materials to study mathematics teaching, so that our students can attach importance to learning, learn correctly and learn to learn!