Knowledge points of mathematics in the first grade of primary school
Front-back (front-back positional relationship)
1, pay attention to the difference between describing the order of objects and describing the exact position of objects with words like before and after.
2. The deer is in front, who is behind? The answer is no, not only a squirrel, but also rabbits, turtles and snails are behind the deer.
3. Pay attention to let students describe the relative position of objects with words like before and after.
Up and down (positional relationship between up and down)
1. Understand the relativity of "up and down" in specific situations.
2, can use language to express the "up and down" position relationship of objects in actual situations.
Left and right (positional relationship between left and right)
1, you can describe the left-right position relationship of an object in language.
2. Can experience the relativity of left and right positions in the situation. Further understanding: if two people face the same direction, they see the left and right positions in the same order; If they face each other, they see the left and right positions in the opposite order.
Classroom (front and back, up and down, left and right comprehensive application)
Describe the position and order of objects by using the knowledge learned in the first three lessons.
Summary of mathematics knowledge points in the first grade of primary school
I. Understanding of 6- 10:
1, Count: According to the number of objects, it can be represented by a number of 6- 10. When counting, counting from front to back is from small to large.
2. Number sequence in10:
(1) From beginning to end: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10.
(2) From back to front: 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0.
3. Compare size: In the order of numbers, the number behind is always greater than the number before.
4. ordinal meaning: used to indicate the order of objects, that is, which one.
5. Composition of Numbers: A number (except 0, 1) can be composed of two smaller numbers. For example, 10 consists of 9 and 1
When remembering the composition of numbers, one group of numbers can be used to associate another group of numbers in different positions.
Addition and subtraction of 2.6- 10
Calculation method of addition and subtraction within 1 and 10: according to the composition of numbers.
2. Figure 4: According to different thinking angles of a picture, two addition formulas and two subtraction formulas can be written.
3. There is a question mark under the "braces", which requires the two parts to be merged and calculated by addition. There is a question mark on the upper side of the "brace" to find out how much is left in the total and calculate it by subtraction.
Third, increase and decrease.
1. Calculation method of continuous addition: When calculating continuous addition, it should be done from left to right, first calculate the sum of the first two numbers, and then add it to the third number.
2. Calculation method of continuous subtraction: When calculating continuous subtraction, proceed from left to right. First calculate the difference between the first two numbers, and then subtract the third number from the obtained number.
Fourth, add, subtract and mix.
Calculation method of addition and subtraction: from left to right, first add (or subtract) the first two numbers, and then subtract (or add) the third number.
Mathematics learning methods and skills
Create a good atmosphere in the lecture hall
Modern educational theory holds that a good lecture hall atmosphere can be a silent medium to convey common sense, the key to enlighten wisdom and the potential power to cultivate morality. Every teacher knows that the atmosphere in the lecture hall greatly affects the students' learning automaticity. In education, teachers plan students' favorite and emotional learning activities, stimulate students' love for learning, and let students learn mathematics happily; Teachers provide students with rich opportunities to participate in mathematical activities, guide students to acquire mathematical common sense, technology and mathematical thinking methods through independent research and cooperative exchange, and let students experience a vivid, automatic research and distinctive invention process. All this needs an excellent lecture hall atmosphere to support.
Teachers should create a democratic and harmonious learning atmosphere for students. The real democracy and harmony in the lecture hall stems from a teacher-student relationship. The educational process is a two-way process of information exchange between teachers and students, and it is also a process of emotional exchange between teachers and students. Through their own educational activities, teachers moisten students' hearts with love, stimulate students' enthusiasm for learning mathematics, and make them actively participate in learning activities automatically. Take the lesson "Knowing 0 and Related Addition and Subtraction" as an example. In the activity of writing 0, the teacher used these words "Do you want to write 0?" Ok, hold out your little hand and look at the blank screen book. Draw a line of 0 in the Japanese word box. What do you think should be paid attention to when writing 0? "What do you want to say to the children in our class?" "The teacher thinks that your 0 must be beautifully written, so start writing a few 0 s in the Japanese word box below! "Arrange students to carry out activities such as book blank, drawing, summary writing and independent writing.
The teacher's words are permeated with understanding, respect and trust for students, and they are deeply concerned about students, so that students can get the method of writing 0 happily and automatically. In the process of learning common sense, when students make mistakes, don't criticize them, but give them another chance. For example, ask students to say, "How many peaches are marked on the plate/kloc-0?" At this time, the reply "Little monkey ate 1 peach, marked 1" appeared. The teacher didn't worry, then asked, "How many peaches are there in that plate?" The child immediately said, "It's marked 1." How many frogs are there on two lotus leaves? When one student says 4-0, other students are eager to express their own equation 4+0 or 0+4.
At this time, the teacher gave the students a chance to correct themselves and asked them to say it again on the grounds that "the teacher didn't hear clearly". Wonderful has won students the opportunity to understand success. "Give students another chance" makes them feel warm and encouraged, keep their love for learning, and keep their enthusiasm for learning and learning common sense. In a democratic, relaxed and harmonious educational atmosphere, students feel comfortable, have vivid thoughts, dare to think, dare to feel and dare to speak, and their learning potential and automaticity are fully brought into play.
First-year mathematics must recite articles related to knowledge points;
★ Summary of compulsory knowledge points in first grade mathematics.
★ Organize the knowledge points of mathematics in the first grade of primary school.
★ Sort out and summarize the knowledge points of first-grade mathematics.
★ 202 1 Required Knowledge Points of Mathematics in Grade One of Junior High School
★ First-year mathematics knowledge points Hebei Education Edition
★ Sort out the knowledge points of first-grade mathematics.
★ The arrangement of mathematics knowledge points in the first grade of primary school
★ Summary of first-grade mathematics knowledge points
★ Guidance of mathematics learning methods in the first grade of primary school
★ Learn the knowledge points of the first volume of mathematics in senior one.