(1) The length of common objects will be estimated in centimeters, and the length units of millimeters and decimeters in actual measurement will be deduced.
(2) Through the measurement activities, we can actually feel how long 1mm and 1mm are, and we will use them as length units to estimate.
(3) Knowing the forward speed between meters, decimeters, centimeters and millimeters, we can choose the appropriate length units according to the specific situation and will use these length units for measurement.
(4) Be able to complete relevant calculations and applications, and develop the concept of space and hands-on operation ability.
2. Understanding of kilometers:
(1) Understand that the kilometer is a much larger unit of length than the meter, know how long it is about 1 kilometer, and get a preliminary understanding of the application of the kilometer in life.
(2) Grasp the propulsion rate between kilometers and meters, correctly convert and calculate, and solve related practical problems.
3, tons of understanding:
(1) Understand that tons are much larger than kilograms, understand the weight of 1 ton, and understand the application of mass unit tons in life.
(2) Grasp the forward speed between tons, kilograms and grams, correctly convert and calculate, and solve related practical problems.
(3) Be able to estimate the quality of some common items, and select appropriate quality units according to specific conditions.
Unit 2: Addition and subtraction within 10,000 (2)
1, additional:
(1) can cultivate the consciousness and ability of collecting information, asking questions and solving problems in combination with specific situations.
(2) Be able to explore and master the calculation method of two-digit and three-digit continuous carry addition in the process of solving problems, and know the arithmetic and precautions of written calculation.
(3) Skillfully complete the calculation of two-digit and three-digit continuous carry addition, and solve related practical problems.
(4) be able to estimate according to the specific situation, gradually master the basic methods of estimation, and form the habit of estimating the approximate range of calculation results.
2, subtraction:
(1) can extract useful mathematical information from the actual situation and put forward appropriate mathematical problems based on this information.
(2) Go through the process of estimation in the process of solving problems, gradually learn to estimate reasonably and appropriately, and use the estimated results to judge whether the calculation results are right or wrong.
(3) In the process of solving problems, explore and master the calculation method of three-digit continuous abdication subtraction, and know the arithmetic and precautions of written calculation.
(4) Skillfully complete the calculation of three-digit continuous abdication subtraction and solve related practical problems.
3. Calculation of addition and subtraction:
(1) Understand the mathematical basis and significance of the calculation method of addition and subtraction in solving practical problems, and master the calculation method of addition and subtraction skillfully.
(2) You can choose an appropriate method to check the addition and subtraction, and gradually develop a good habit of checking and calculating yourself.
Unit 3: Quadrilateral
1, quadrilateral:
(1) Through observation and comparison, we can intuitively understand the characteristics of quadrangles, and use the characteristics to distinguish which graphics are quadrangles.
(2) Can draw quadrilaterals on bitmap or grid paper, and can circle quadrilaterals on nail board.
2, parallelogram:
(1) Based on the life situation, we can initially perceive the characteristics of parallelograms and distinguish which graphics are parallelograms.
(2) You can draw a parallelogram on a bitmap or grid paper, or circle a parallelogram on the nail board.
(3) The connection and difference between the penetrating parallelogram and the rectangle.
3. Perimeter:
(1) Understand and accurately grasp the concept of perimeter by combining specific objects and figures, and can describe the perimeter of a given figure in mathematical language.
(2) The perimeter of a given graph can be measured or calculated by different methods, and the perimeters of two graphs can be compared.
4. Perimeter of rectangle and square:
(1) Explore and master the calculation method of rectangle and square perimeter, and feel the application of mathematics in life.
(2) We can skillfully calculate the perimeters of rectangles and squares by choosing appropriate methods, and solve related practical problems in specific situations.
5. Estimate:
(1) On the premise of accurately grasping the length unit, reasonably and appropriately estimate the length (including the circumference) of a line segment or object.
(2) Be able to use the estimated knowledge to solve practical problems in life.
Unit 4: Division with remainder
1, for example 1
(1) Review the meaning of division in the process of solving problems, review the names and meanings of each part of division, and realize the close relationship between division and life.
(2) According to the specific situation, through the process of vertical division and abstraction, we can understand the practical significance of each step of vertical division and correctly grasp the writing case of vertical division of one-digit quotient ...
Question 2: Is it necessary to learn Olympic Mathematics in the third grade of primary school? Every coin has its two sides. You should consider why you want to teach your children olympiad.
The disadvantage is that it is too difficult for children, and children may no longer like math.
Some people hold a near-profit attitude and think that children will learn Olympic mathematics better. This is misleading. After learning Olympic Mathematics, primary school mathematics is not necessarily top-notch. Primary school mathematics emphasizes carefulness. In addition to good primary schools, schools in district centers or counties also have certain requirements for improving classes. Ordinary primary schools, including central primary schools in general towns and villages, will not have such requirements.
There should be two correct attitudes: to participate in the competition, which requires systematic study and some economic opportunities. This kind of strict training is conducive to the cultivation of thinking, knowledge learning, accumulation of learning methods and the cultivation of learning spirit. We should pay attention to the choice of formal teaching institutions, and it is best to teach in class at the primary stage instead of one-on-one teaching. After the next semester of the fifth grade, one-on-one teaching can be carried out. This kind is more from the third grade, and of course there will be transfer students.
One is simply to cultivate students' interest in mathematics, and only select some chapters for teaching. The olympiad is divided into two parts, one is knowledge expansion, such as number theory, which will not be involved in junior high school and senior high school in the future. One is ahead of time, that is, some knowledge is the content of junior high school in school teaching, and there will be learning in elementary school Olympiad, such as a lot of geometry knowledge. And we will prefer the latter, aiming at improving learning ability and self-confidence. With self-confidence, students are usually more interested in math learning. This kind usually starts from the fourth semester or the fifth grade.
Question 3: What are the advantages and disadvantages of learning Olympic Mathematics? Can children in the third grade of primary school learn Olympic Mathematics? What should I pay attention to? Being good at Olympic Mathematics can improve the level of intellectual development.
Bad math in Austria will hurt children's self-confidence and make them tired of learning.
It is suggested that children who study well, spontaneously want to learn, and have a certain mathematical foundation learn Olympic Mathematics.
Recommended time: children begin to learn olympiad in the fifth grade!
Question 4: What are the advantages of starting to learn Olympic Mathematics in the third grade?
Whether it is good or bad to learn Olympic Mathematics depends on personal circumstances. If the students who study Olympic Mathematics are interested in logical thinking training and have a certain foundation, it will basically not do any harm.
Question 5: What do you study in mathematics in the third grade of primary school? Write it out in detail. Thank you! ! ! ! Multiplier is the product of two digits.
Approximation and "rounding" method
Multiplier, multiply by zero at the end of the multiplicand, and multiply by two digits at the end of the multiplier (continuous carry)
Two digits multiplied by three digits (discontinuous carry)
Multiply two digits by two digits (discontinuous carry)
Question 6: What are the advantages and disadvantages of learning Olympic Mathematics? Can children in the third grade of primary school learn Olympic Mathematics? What should I pay attention to? Education in China now is a piece of shit. What is the Olympics? This is all fucking bullshit. Isn't it something beyond the scope of the textbook? When you see these questions after you go to junior high school and high school, you will wonder what this Olympiad is for. Pupils are just having fun.
How many children have been made worse by China's education, and have long lost their childhood happiness. They either scored 100 all day, won the first place, or attended some training classes on weekends. How old is the child? Can he take this? In this model, imagination and creativity have long since ceased to exist.
Would you like to see a kid who scored 100 in the exam, then stand in front of you all day without a smile and say, "Mom and Dad, I scored 100, this is my report card", and then turn around and do your homework, or would you like to see a naive kid who scored 60 or 70 in the exam and tell you interesting stories about him and his friends with a smile? Maybe it's too much, but it's really the sorrow of modern education in China.
It's pathetic to see some primary school students now. Alas! ~
Question 7: Is it too late to learn Olympic Mathematics in Grade Three? What's the point of letting children learn Olympic Mathematics now? At present, most provinces and cities have cancelled the extra points for the Olympic Games. To put it bluntly, what use can children learn the Olympic Games? If your child likes math and Olympics, he can naturally satisfy his interest, but if he doesn't like it, you'd better let him go. I think this is a little too much. It will take a lot of time and money to learn something that will not be used in the future in order to get more than ten points in the exam. Is this equivalent to picking up sesame seeds and losing watermelon? Please respect your child ~ help him learn his favorite hobbies and give him a happy childhood.