Summary of Mathematics Knowledge Points in Volume II of Grade One for Primary School Students
1, addend+addend = and 2, minuend = difference.
Sum = appendix+appendix difference = negative
Total increase = another increase minus difference = minus.
Another addend = Addendum Minus = Minus Difference
Difference+Minus = Minus
Subtraction = difference+subtraction
3. The first digit of a number from the right is a number (indicating several 1).
The second place is ten. The third place is several hundred. (meaning hundreds)
Both reading and writing start from a high position. Reading is writing words, and writing is writing math words.
Write math words before each one and English words after each one.
4、? The following is the sum of the addition calculations. (+)
? The above is the part of the solution, which is calculated by subtraction. (-)
5. Find out how many large numbers are more than decimals and calculate by subtraction. (-)
Find how much the decimal is less than the large number, and calculate by subtraction. (-)
Large number = decimal+extra decimal = extra decimal = extra decimal = number of sizes
6. The hour hand is short and the minute hand is long. 1 hour =60 minutes 60 minutes = 1 hour 1 minute = 15 minutes.
When the minute hand points to 12, it is the whole hour, and when the hour hand points to the number, it is the time.
When the minute hand points to 6, it is half hour, and when the hour hand passes through the number, it is half hour.
7. Make up ten songs: children clap their hands, and everyone sings ten songs, nine for one, eight for two, seven for three, six for four, two or five for ten.
Ten-fold method: divide the decimal and round the large number. Division of large numbers and rounding of decimal places.
8. Graphic application problem: first find out the known conditions and problems, and then determine the addition and subtraction. Finally, remember to write an answer.
Find out what * * * is and add it. (+)
Find out what is left, what is left, how much is left, and work it out by subtraction. (-)
9. 1 yuan = 10 angle 1 angle = 10 point 1 yuan = 100 point.
10, exchange the position of the addend, and the same is true.
Senior one mathematics knowledge points
Animal paradise (compare size and proportion)
Knowledge points:
1. There are two strategies to compare animals: one is based on "counting" and the other is based on "pairing", thus experiencing the mathematical thought of "one-to-one correspondence".
2. By comparing the specific times of mathematical activities, we can better understand the meaning of symbols such as ">" and "<" = ",learn to write, and use these symbols to represent the size of numbers within 10.
3. Understand the meanings of "as much", "more", "less", "most" and "least".
Height (height, length)
Knowledge points:
1, length, height and thickness all belong to the comparison of object lengths, but in real life, people are used to calling the comparison of the length of horizontally placed objects ratio, and the comparison of the length of vertically placed objects ratio height. The comparison of the vertical distance of a flat object is called specific thickness. Their methods of comparison are the same.
2. Know the difference between height and height, and know that when comparing height, length and thickness, only the same starting point can be more correct.
3. Know the relativity of height comparison
Weight (compared with weight)
Knowledge points:
1, through the process of comparison, we can experience some specific comparison methods and the relativity of light and heavy. 2. Understand the necessity of using tools to determine the severity and the diversity of problem-solving methods. 3. Indirect comparison, permeated with the idea of equal exchange, is more difficult for students and does not require all students to complete it independently.
Math learning methods in the first grade of primary school
First of all, listen to the teacher carefully. This is the main reason why I got good grades. Listen attentively, follow the teacher's thinking, don't be distracted, and don't listen at the same time. Secondly, we should pay attention to every word the teacher says, because mathematics is famous for its rigor, and there are serious differences between words, and there are infinite mysteries hidden between words. Pay attention to taking notes when listening to the lecture. Once the teacher talked about a difficult geometry problem, which I didn't understand at the moment. Fortunately, I wrote down the problem and the solution, thought it over carefully when I got home, and finally understood it thoroughly, so that I easily solved a similar problem in a competition and got a valuable score of 10. Raise your hand to speak actively in class. The benefits of raising your hand are really many! (1) can consolidate the knowledge learned in class. (2) Exercise your eloquence. Those vague ideas and mistakes can be taught by teachers. It's killing three birds with one stone. In short, listening should be done with hands, mouth, eyes, ears and heart.
Second, extracurricular exercises. Confucius said, "Learn from time to time". Homework after class is also an important part of learning and consolidating mathematics. I pay great attention to the accuracy and speed of solving problems. Accuracy means accuracy, concentrate on completing your homework independently, strive to be accurate once, and correct any mistakes in time. And speed is to exercise your concentration and sense of urgency. I often do this. I set the alarm clock at the beginning of my homework and put it out of sight, which helps to improve the speed of my homework. I won't be nervous during the exam, and I won't lose sight of one thing.
Third, review and preview. I plan to review math every night. After finishing my homework that day, I will briefly look at the new knowledge I will learn the next day, and then recall what the teacher said. When I sleep in bed, I will "watch" the teacher's class in my mind like watching a movie. If there is any problem, I will get up and look at it immediately until I understand it. Every Sunday, I will also summarize, review and preview the week's homework. This is good for learning mathematics, and you won't forget it if you master it firmly.
Fourth, improve. After finishing my homework, previewing and reviewing, I will do some rock climbing problems. Doing this kind of problem, thinking independently as much as possible and trying to find out the hidden conditions are the key to solving the problem. If you really can't figure it out, you need to read reference books and consult teachers and classmates. In short, seeing more, doing more, asking more questions, being open-minded, diligent and keeping a positive spirit are the key.
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