Mathematics teaching methods in the second grade of primary school
First, care for students, sprout interest
Close teacher-student relationship is indispensable in campus life and plays an inestimable role in children's learning and development. First of all, teachers should respect and trust every student and never give up any student. In particular, it is necessary to help poor students make up for the shortcomings of mathematics knowledge in time, so that they have confidence in mathematics learning and are interested in learning. Secondly, we should be good at discovering students' little progress, narrow the gap between teachers and students with kind eyes, subtle movements, cordial attitude and enthusiastic praise, cultivate students' self-confidence, and thus stimulate students' interest in learning.
Second, try it and get interested.
In order to stimulate students' interest in learning, we should often adopt the teaching method of combining operation method with heuristic method. Students in Grade One and Grade Two mainly rely on visual teaching AIDS to think. Let students operate learning tools and cooperate with their hands and brains, which is more conducive to students' thinking. For example, when teaching "application problems with more and less", let all students take out the small disks in their learning toolbox, five red disks in the first row and seven yellow disks in the second row. They will happily take them out and arrange them, and then ask the students to align the red disks with the yellow disks one by one. Then the teacher asked, "What did you find?" Students will say that the red disk is two less than the yellow disk, or the yellow disk is two more than the red disk. Finally, the formula: 7-5=2 has both the first meaning and the second meaning. In this way, students quickly understand this kind of application problems, and at the same time cultivate their own observation ability, speaking ability and thinking ability.
Third, solve problems and enhance interest.
The life of mathematical knowledge lies in its application. It is necessary to cultivate students' ability to observe and understand things around them from a mathematical point of view, and to encourage students to use mathematical knowledge to solve practical problems around them. If you learn the knowledge of yuan, jiao and fen, let students buy daily necessities and vegetables for their families and let them think about how to change money; After learning the interest knowledge, students are encouraged to personally deposit their pocket money in the bank, so that students can experience the actual calculation of interest, interest rate, principal and other knowledge. In teaching, teachers should actively build a learning platform for students according to their age characteristics and existing life experience.
A complete collection of mathematical formulas, rules, nursery rhymes and formulas in the second grade of primary school
Formulas and rules for vertical division;
1, the divisor should be written correctly, the digits should be aligned, the divisor should be hidden inside, the divisor should stand opposite, and the quotient should be seen on it.
2. Try quotient with multiplication formula, which is fast and accurate;
3. There is a remainder division formula.
Try: the product of divisor multiplied by several is closest to division.
Numbers smaller than the dividend are a minority.
Quadratic: The product of quotient and divisor is written under the dividend.
Three minus: Dividend minus the product of quotient and divisor.
Four ratio: the ratio of the remainder to the divisor, with the remainder less than the divisor.
Law of division with remainder
When solving a problem with the knowledge of division with remainder, those who have a picture first look at the picture, make clear the meaning of the question, then find out the relevant information for calculation, and finally determine the final answer according to the remainder.
Directional songs in life
Get up in the morning and face the sun. The front is east, the back is west, the left is north and the right is south.
Directional songs in the map
Painting should face north, up north, down south, left west and right east.
Remember the reading and writing numbers.
Read uppercase and write lowercase, and read and write from the top.
When writing numbers, you should pay attention to how many people have.
There is a' 0' when there is no count;
When reading, remember that all zeros at the end are discarded.
No matter how many zeros are in the middle, just read one.
Compare the size rules of numbers and nursery rhymes.
Look at the numbers first. More numbers make it bigger.
If the number of digits is the same, look at the high position. The higher the position, the bigger it is.
The high position is the same, the next one is big;
According to the law, push down, regardless of the size.
Conversion formula of length unit
1 km = 1 000m1km =1000m
1 m = 10 decimeter = 100 cm
1 decimeter =10cm1DM =10cm.
1cm = 10mm 1cm = 10mm
1m = 1000mm 1m = 1000mm
Vertical calculation addition rule
1. Same digit alignment, counting from one digit;
2. One number enters 1 from 10 to 10, and the other number goes from 10 to 100.
Enter 1, and the number of digits obtained should also be aligned.
Subtraction rule of vertical calculation
1. Same digit alignment, counting from one digit;
If the number of digits is not enough, borrow one digit from the ten digits. When ten numbers are added up,
Subtract it again. Subtract 1 from the borrowed digits, and then count.
Count. Ten dollars is not enough to borrow one from one hundred dollars. When you come back,
Add ten and do subtraction calculation.
Calculation method of addition and subtraction
(Generally, subtraction, addition, subtraction, division, multiplication and division are used to check addition)
Addition: Appendix+Appendix = Sum.
One addend = and-the other addend.
Subtraction: subtraction-subtraction = difference
Subtraction = minuend-difference
Negative = negative+difference
Multiplication: Multiplier? Multiplier = product
Multiplier = product? Another multiplier
Division: Dividends? Divider = quotient
Dividend = dividend? business
Bonus = business? divisor
Graphic related knowledge
1, the angle has nothing to do with the side length, but with both sides.
About the size of the car.
2. acute angle
A rectangle has four sides, the opposite sides are equal and the adjacent sides are not equal. The long side is called "long" and the short side is called "wide". There are four corners, each of which is a right angle.
A square has four sides, each side is equal, and there are four corners, each corner is a right angle.
5. A parallelogram has four sides, the opposite sides are parallel and equal, there are four corners, the diagonal angles are equal, and there are a set of obtuse angles and a set of acute angles.
Time unit conversion