Knowledge points of mathematics in the first grade of primary school
Appendix+Appendix = Sum
For example, 3+13 = 16,3 and13 are addends, and the sum is16. Take a part from a number and find out how much is left. Subtract.
Negative-negative = difference
For example, 19-6= 13, 19 is the minuend, 6 is the minuend, and the difference is 13.
(1) Memorize the numbers of addition and subtraction in the table.
(2) Understand the following rules
1, addition
(1) Add two numbers and keep the number unchanged: if one of the added two numbers increases, the other decreases, the other increases and the other decreases.
(2) When two numbers are added, one of them remains the same. If the other number changes, this number will also change, and the change of the result is as big as the change of the addend.
(3) Add the two numbers and exchange positions to get the same number.
Step 2 subtract
(1) Subtract one number from another to keep the reduction unchanged: if the minuend increases, the result will also increase, and the result will increase as much as the minuend increases; When the minuend is reduced, the result is also reduced, and the result is also reduced by how much the minuend is.
(2) Subtract one number from another to keep the minuend unchanged: the meiosis increases, the result decreases, and the meiosis increases and the result decreases; If meiosis decreases, the results increase, and the results increase by how much meiosis decreases.
(3) When one number is subtracted from another, the number remains the same: the minuend increases as much as it increases; As much as the minuend is reduced, the minuend will also be reduced.
20-bit decimal addition formula table
9+ 1= 10 8+2= 10 7+3= 10 6+4= 10 5+5= 10 4+6= 10 3+7= 10 2+8= 10 1+9= 10
9+2= 1 1 8+3= 1 1 7+4= 1 1 6+5= 1 1 5+6= 1 1 4+7= 1 1 3+8= 1 1 2+9= 1 1
19+3= 12 8+4= 12 7+5= 12 6+6= 12 5+7= 12 4+8= 12 3+9= 12
9+4= 13 8+5= 13 7+6= 13 6+7= 13 5+8= 13 4+9= 13
9+5= 14 8+6= 14 7+7= 14 6+8= 14 5+9= 14
9+6= 15 8+7= 15 7+8= 15 6+9= 15
9+7= 16 8+8= 16 7+9= 16
9+8= 17 8+9= 17
9+9= 18
The sharing of mathematics learning methods among first-grade children.
Method one
Listen carefully in class and review in time after class. The acceptance of new knowledge and the cultivation of mathematical ability are mainly carried out in the classroom, so we should pay special attention to the learning efficiency in the classroom and seek correct learning methods. In class, you should keep up with the teacher's ideas, actively explore thinking, predict the next steps, and compare your own problem-solving ideas with what the teacher said. However, due to various reasons, there are often some students who can't keep up with the teacher's ideas and have loopholes in their studies. At this time, on-the-job teachers are needed to give one-on-one counseling to students. In the process of tutoring, the teacher will help students recall what they have learned in one day and guide them to correctly master the reasoning process of various formulas. In a sense, this will help students develop a learning style of asking questions when they don't understand.
Method 2
How to cultivate children's verbal ability? The verbal calculation is also satisfactory. It is a calculation method that directly calculates numbers without using calculation tools, mainly relying on thinking and memory. The new syllabus points out that oral calculation is not only the basis of written calculation, estimation and simplification, but also an important part of calculation ability. It can be seen that to cultivate students' computing ability, we must first start with oral computing ability. So how to cultivate students' oral ability? My experience is that it is very important for teachers to read the three-character classics well: "foundation (grasping the foundation), teaching method (teaching method) and practicing method (routine training)" Reading the word "base" well means basic oral calculation. Oral calculation in primary school mathematics teaching can be divided into three categories: basic oral calculation, general oral calculation and special oral calculation. These three kinds of oral calculation are mainly based on the content of basic oral calculation, which is the basis of calculation. Basic oral calculation must require proficiency, and proficiency refers to "blurting out", while the other two types of oral calculation only require proficiency or learning.
Method 3
Hand-brain quick calculation is to use different human organs to simulate the operation of corresponding components and principles of computers, and to simulate computers to develop the computing and counting potential of human bodies. It is realized by simulating the calculation and counting of computer 0 and 1 theory to single digits, and simulating the way (software) of computer inductive processing information. It is not only a calculation method, but also a method to train people's hands and brains to simulate computer rapid operation and counting.
Mathematics teaching plan for the second volume of the first grade
First, the guiding ideology:
Through students' mathematics learning activities, students' interest in mathematics is cultivated and the concept that mathematics can be seen everywhere is established.
Second, the whole teaching material analysis:
This textbook includes the following contents: counting, comparison, understanding and addition and subtraction of numbers within 10, understanding and classification of figures, understanding of numbers within1-20, understanding of clocks, carrying addition of numbers within 20, and application of mathematics and mathematical practice. Recognition and calculation, comparison of number, length and height, simple classification and preliminary understanding of clock face enable students to acquire basic knowledge and skills of counting, develop mathematical ability, cultivate innovative consciousness and practical ability, and establish interest and confidence in learning and applying mathematics.
Third, the teaching content analysis:
The understanding and calculation of numbers within 20 is the key teaching content of this book. They are widely used in daily life. They are the beginning of students' learning to recognize numbers and calculate, and the basis of learning to recognize and calculate large numbers. Being in the most basic position of primary school mathematics is an essential basic knowledge and skill for students to adapt to lifelong learning.
In addition to number recognition and calculation, this textbook also arranges simple classification, understanding common objects and practical activities. Students' study of these contents is helpful to deepen their understanding and mastery of the number within 20, feel the close relationship between mathematics and life, appreciate the close relationship between mathematics and life, appreciate the application value of mathematics, and enhance their enthusiasm and initiative in learning mathematics.
Fourth, the teaching objectives:
Knowledge and skills
1, master the number of objects within 20, distinguish a few from the first one, master the order and size of numbers, master the composition of numbers within 10, and read and write numbers from 0 to 20.
2. Have a preliminary understanding of the meaning of addition and subtraction and the names of each part in the addition and subtraction formula, and have a preliminary understanding of the relationship between addition and subtraction, and be skilled in calculating the addition of one digit and the subtraction within 10.
3. Initially learn to solve some simple practical problems according to the meaning and algorithm of addition and subtraction.
4. Recognition symbols "=, >,<" are used to indicate the size of numbers.
5. Intuitively understand cuboids, cubes, cylinders, spheres, rectangles, squares, triangles and circles.
6, a preliminary understanding of the classification method, will be simple classification.
(2) Problem solving field
1. Under the guidance of teachers, students can find and put forward simple math problems from their daily lives, and begin to have a certain sense of problems.
2. Students have different solutions to the problem of initial understanding and consent.
3. Students have preliminary experience in solving problems in cooperation with peers.
4. Students initially learn to express the general process and results of solving problems in their own language.
(3) the field of emotion and attitude
1. With the encouragement and help of others, students are curious about some things related to mathematics around them and can actively participate in mathematics activities.
With the encouragement and help of others, students can overcome some difficulties in mathematics activities, gain successful experience and have confidence in learning mathematics well.
3. Students can describe some phenomena with numbers less than 20 and geometric figures such as rectangles, squares, cylinders and balls, and feel the close relationship between mathematics and daily life.
4. Students experience the process of learning mathematics such as observation, operation and induction, and feel the rationality of mathematical thinking process.
Under the guidance of others, students can find mistakes in mathematics activities and correct them in time.
Five, teaching object analysis:
I teach math in 1 class (1) and 1 class (3). They have just entered primary school from kindergarten and are about to enter formal and formal education and study. The two classes I teach have many similarities. For example, they are lively, naive and curious about everything in school. Most of them are active in thinking and have a strong interest in learning mathematics, but there are some differences.
Most students in the class can count all the numbers within 10, and can recognize and write these numbers. A few students have been able to calculate the addition and subtraction within 10; However, some students don't adapt to classroom learning, their attention span is short, their children are generally active, and their behavior habits need to be standardized. In view of the above situation, my task this semester is mainly to cultivate students' good study habits and behavior habits, pay attention to stimulate students' interest in learning, and make them like classes and math. In the classroom, teachers should start with routine training, because routine training is a strange process for children. How to tidy up the schoolbag, how to put the school supplies in class, how to raise your hand when answering questions, what is classroom homework, what is homework, how to remember homework, when to communicate in class and so on. All children need to master and form habits this semester, especially good listening, speaking, reading, writing and independent thinking skills.
Six, the focus and difficulty in teaching:
Key points: addition and subtraction of1.6 ——10.
Carry addition within 2.20.
Difficulties: Composition of numbers within 1 and 10.
2. Complement 10.
Seven, the main teaching strategies:
1, strengthen intuitive teaching, and use teaching (learning) tools such as sticks and pictures to conduct intuitive teaching in combination with specific situations.
2. Through hands-on operation and group discussion, let students know the composition of numbers within 20 and the calculation method of addition.
3. Contact with students' real life and cultivate students' interest in learning. Connecting with the reality of life and children's physiological and psychological characteristics, create activity situations by learning favorite games, fairy tales, stories, cartoons and other forms.
4. Strengthen the transfer of knowledge, reduce the difficulty, disperse the difficulty and reduce the teaching steps.
Summary of knowledge points at the end of the first volume of senior one mathematics;
★ The key arrangement at the end of the first volume of the first grade mathematics.
★ Knowledge points in the first volume of first grade mathematics
★ Summarize the knowledge points of the final size of the first grade mathematics.
★ Summary of compulsory knowledge points in first grade mathematics.
★ People's Education Press review materials for the final exam of the first grade primary school mathematics.
★ Summary of knowledge points in the last four units of mathematics in grade one.
★ Learn the knowledge points of the first volume of mathematics in senior one.
★ Summarize the knowledge points of mathematics in the first grade of primary school.
★ Knowledge points of mathematics in the first grade of primary school
★ Knowledge points of the first volume of mathematics in Grade One of People's Education Edition