Summary of knowledge points in the second volume of mathematics in the second grade of primary school
I. Average score
1, the meaning of average score: divide some projects into several parts, and each part gets the same amount, which is called average score.
2, the average method:
(1) When some articles are divided equally according to the prescribed number of shares, they can be divided into one article or several articles until all of them are finished.
(2) Divide some items into several equal parts. Think about time-sharing: this number can be divided into several such parts.
Second, division.
1. Meaning of the division formula: As long as it is the process of average division, it can be expressed by the division formula.
2. How to read the division formula: usually read from front to back, read "∫" as division, and "=" as equal.
Other pronunciations remain unchanged.
3. Name of each part of the division formula: In the division formula, the number before the division sign is the dividend, the number after the division sign is the divisor, and the number obtained is the quotient.
Third, use the multiplication formula of 2~6 to find the quotient.
1, the method of quotient:
(1) Find the quotient by the average score method.
(2) Use the multiplication formula to find the quotient.
(3) Use the multiplication formula to find the quotient.
2. When you use the multiplication formula to find the quotient, you should multiply the dividend of the divisor.
Fourth, solve the problem.
1, the solution to the average score problem:
Total number/share = number of shares, total number/share = number of shares, dividend = quotient x divisor,
Dividend = quotient × divisor+remainder, divisor = dividend present quotient, factor× factor = product,
One factor = product ÷ another factor
2. The method of solving practical problems by multiplication and division:
(1) The problem to be solved requires finding the total number and calculating by multiplication;
(2) Required questions require finding out the number of copies or the number of copies per copy, and calculating by division.
Mathematics learning methods in the second grade of primary school
Develop good homework habits
Playfulness is a child's nature, and most children lack self-control, so parents need to urge their children to finish their homework carefully and cultivate their good homework habits and writing posture.
Parents urge them to do their homework, check their homework in time and explain what they haven't learned in time. Earnestly completing daily homework is the basic guarantee of study. For students who are relatively backward in their studies, I always use my spare time to make up for it. However, extracurricular time is limited, there are more students who need to make up lessons, and teachers have limited energy, which requires the active cooperation of parents.
Sometimes, when a child suddenly makes great progress in his studies, the teacher feels very gratified. Once a child's study has regressed, ask why. Generally, parents are very busy recently and have no time to take care of him. Teachers use their spare time to make up lessons for students who are backward in learning. The teacher doesn't want any students to fall behind.
Cultivate good learning methods
Children should adopt this method when they go home to do their homework every week: first review what they have learned this week and straighten out the context; Then do this week's homework and check it; Finally, preview what you will learn next week. If we adopt this method and stick to it, I believe that children's learning will definitely make great progress.
Math learning skills in the second grade of primary school
Cultivate the following two good math study habits.
First, the habit of finishing homework carefully.
According to the principle of "forgetting curve" put forward by German psychologist Ebbinghaus, it is not easy to forget when people practice in time after learning new knowledge, and it is easy to forget when they don't practice in time. Therefore, we must consolidate what we learned that day and finish our homework carefully. In this regard, I ask students to do: before doing homework, read the textbook to review what they learned that day, and then do homework, and also do "three checks and one sign". "three to three": eyes, heart, hands, eyes to see the topic, thinking and calculating, hands to write correct and beautiful answers;
"Check the signature": After finishing the homework, carefully check whether there are any mistakes, correct them in time, and finally let the parents sign. The wrong questions corrected by the teacher in time are recorded in the wrong question set and corrected in the exercise book.
Second, the habit of fast and correct oral calculation
Oral calculation in the lower grades of mathematics is the basis of future calculation. To develop the habit of fast and correct oral calculation, we should practice more on the basis of mastering certain oral calculation methods. Senior two last semester focused on exercises 100 and the calculation of addition, subtraction, multiplication and division. The difficulties of addition and subtraction within 100 are carry addition and abdication subtraction, which require teachers to classify and guide the specific calculation methods, while the calculation of multiplication and multiplication and division in the table requires students to remember the multiplication formula. In teaching, teachers should guide students to adopt more targeted, effective and specific memory methods. You can also practice addition, subtraction, multiplication and division in the form of card games after class. Practice makes perfect, and the speed of oral calculation will naturally increase.
You can also use some computer software or app, the program automatically gives questions and automatically corrects them, and children can also calculate their grades through PK, which fully mobilizes their learning enthusiasm.
The key to forming good habits is decided in the first three days and one month. The first month of school is very important if you want to keep good habits. As a math teacher in Grade Two, I should always remind myself to set an example after school starts, get rid of the bad habits of impulsiveness, simple problem solving and rudeness, and always remind myself to carefully cultivate students' good math study habits according to the above points of education.
Because of the age of junior two students, sometimes habits are easy to repeat, so we should communicate with parents more and teach them specific family training methods, so that parents can cooperate with teachers to grasp, grasp and grasp repeatedly, so that habits become natural.
Summary of knowledge points in the second volume of mathematics in the second grade of primary school;
★ Knowledge points in the second volume of second grade mathematics published by People's Education Press.
★ Summary of Knowledge Points in the Second Book of Grade Two Mathematics (2)
★ Summary of knowledge points in the second volume of second grade mathematics.
★ Knowledge points in the second volume of the second grade math book
★ Review materials for the second volume of Grade 2 mathematics (2)
★ Summary of Mathematics Review in the Second Term of Senior Two.
★ Review outline of the second volume of second grade mathematics published by People's Education Press.
★ Summary of the total review questions in the second volume of the second grade mathematics
★ Integration of Mathematics Review Points in the Second Volume of Senior Two.
★ People's Education Edition, Grade Two, Volume Two, Mathematics General Review Materials