Knowledge points in the second volume of the second grade of primary school (mathematics)
The first single metadata collection and collation
1. Collect data by orthography.
2. Use statistical charts to represent data.
3, according to the statistical chart can make some judgments.
4, data collection-sorting-analysis table.
The second unit division table (1)
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 copies, they can be divided into one article or several times until all the articles 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, = read as arithmetic, and other readings 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 of shares per share = number of shares, total number of shares = number of shares, dividend = quotient dividend,
Dividend = quotient divisor+remainder, divisor = dividend quotient, factor factor = product,
One factor = the product of another factor.
2, with two steps to solve practical problems:
(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.
The arrangement of mathematics learning methods in grade two
First, the correct primary school mathematics learning methods-seize the classroom
Science study focuses on weekdays and is not suitable for surprise review. The most important thing to study on weekdays is to attend class for 45 minutes. Listen attentively and keep your thoughts close to the teacher. At the same time, it should be pointed out that many students tend to ignore the mathematical thinking methods taught by teachers and pay attention to the solution of problems. In fact, thinking methods such as "transformation" and "combination of numbers and shapes" are far more important than the solution of a problem.
Second, finish the homework with high quality.
The so-called high quality refers to high precision and high speed. When writing homework, I sometimes repeat the same type of questions. At this time, we should consciously examine the speed and accuracy, and we can have a deeper thinking about this kind of problem every time we finish it, such as the content it examines, the mathematical thinking method used, the rules and skills of solving problems, etc. In addition, the thinking questions assigned by the teacher should also be carefully completed. If you don't give up easily, you must carry forward the spirit of "nails" and think quietly whenever you have time. Inspiration always pops up in front of you. Most importantly, this is an opportunity to challenge yourself. What are the methods of learning mathematics in primary schools? Success will bring self-confidence, which is very important for learning science; Even if you fail, this question will leave a deep impression on you.
Third, think hard and ask more questions.
First of all, for the laws and theorems given by teachers, we should not only know "what it is", but also know "why it is like this". There are also some things we don't understand about the correct learning method of primary school mathematics, so we should get to the bottom of it. This is the way to understand. Secondly, we should be skeptical about learning any subject, especially science. If you have any questions about the teacher's explanation and the content of the textbook, please feel free to ask questions and discuss with the teacher. In a word, thinking and asking questions are the ways to eliminate hidden dangers in learning.
Fourth, sum up and contrast, and clear up ideas.
(1) summary and comparison of knowledge points. After learning each chapter, you should make a frame diagram of the content of this chapter or go through it in your mind to clarify the relationship between them. Similar and confusing knowledge points should be summarized and compared separately, and sometimes they can be distinguished by association.
(2) Summary and comparison of topics. Students can set up their own question bank. I have two sets of problem sets. One is wrong and the other is accurate. Write down the mistakes in the usual homework and exams selectively, and mark the matters needing attention with a red pen on one side. Just read what is written in red pen before the exam. I also wrote down some extremely clever or difficult problems I saw, and marked the methods used in this problem and the methods of mathematics learning in ideological primary school in red. After a long time, I can sum up some types of problem-solving rules and write them down in red notes. In the end, they will become your precious wealth and be of great help to your math study.
Fifth, do extracurricular exercises selectively.
Spare time is very precious to us middle school students, so when you do extracurricular exercises, you should be less and better. As long as you do two or three questions every day, your mind will be broadened after a long time.
The correct method of primary school mathematics learning is important, but the spirit of perseverance and Excellence is more important. As long as you work hard, you will learn math well. Believe in yourself, math will make your wisdom shine more!
Mathematics teaching plan for the second grade of primary school
Topic: Understand the amount of rice used.
Teaching content: page 4, examples, 4 cases, pages 5 and 4, "Do something" and exercises 1, questions 3-5.
Teaching objectives:
Knowledge and skills
(1) Know the unit "meter" and help students establish the concept of 1 meter.
(2) According to the actual length 1 cm and 1 m, it is understood as 1 m = 100 cm.
(3) Learn to measure long objects with 1 meter length unit.
Process and method
Through observation, inquiry and other learning activities, help students form a correct representation of rice and experience the progress rate between length units.
Emotional attitudes and values
By exploring the internal relationship between knowledge, we can perceive that mathematics comes from life and is used in life.
Teaching emphases and difficulties:
Key point: let students learn to measure the length of an object with a meter ruler.
Difficulty: Experience the actual length 1 m and form an impression.
Teaching methods:
Teaching methods: discussion and demonstration.
Learning style: independent inquiry and group discussion.
Teaching preparation:
Scale, rice scale, tape measure, rope, CAI courseware.
Teaching steps:
First, review the introduction.
(1) Question:
(1) What length unit can be used to measure small objects?
② Which finger is 1 cm wide?
(2) Introducing new courses
Ask two students to measure the length of the blackboard with a centimeter ruler and tell their feelings.
(very troublesome and tired)
Yes! We usually use meters to measure long objects or distances. Today we will learn rice.
(blackboard writing: knowing the amount of rice used)
Second, explore new knowledge.
(1) know "meter".
Guess how long 1 meter is, and draw by hand; Show the initial perceived length of the meter scale 1 m; Look at what objects around us are about 1 meter in length.
(2) Understand the relationship between centimeters and meters.
1cm How many 1cm are there?
(3) Rice consumption
Measure the length of the blackboard, the length of the classroom and the height of the students with a meter ruler.
Third, accumulate and use, expand and extend.
(1) judgment (cross-check)
① Pencil length 15m. ()
② The desk is 70 meters high. ()
③ Height of a tree 16 cm. ()
(2) Complete the exercise 1, questions 3-5.
Fourth, summary.
What did you learn in this class? What did you get?
blackboard-writing design
Know the amount of rice used.
1 m = 100 cm
Second grade mathematics book 2 unit knowledge point induction related articles;
★ Summary of knowledge points in the second volume of second grade mathematics.
★ 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)
★ Review materials for the second volume of Grade 2 mathematics (2)
★ Knowledge points in the second volume of the second grade math book
★ Teach key knowledge points of second grade mathematics.
★ Summary of knowledge points in the second volume of mathematics in the second grade of primary school
★ Review outline of the second volume of second grade mathematics published by People's Education Press.
★ Knowledge points of the second volume of mathematics in the second grade of primary school
★ Unit Knowledge Points in the Second Book of Grade Two Mathematics