The first volume of mathematics in the second grade of primary school Unit 1 Knowledge points
Unit 1: length unit 1, page 1-3.
(1) experienced the process of measuring the length of the same object with different tools, and realized the necessity of unifying the length unit.
(2) It can be estimated and measured with a given "tool".
(3) Know the centimeter and its practical significance.
(4) The length of smaller objects can be estimated in centimeters, and the length of smaller objects can be measured with a scale.
2. Page 4-5
(1) Know the meter, understand its practical significance, and use it to estimate the length of a long object.
(2) Grasp the relationship between meters and centimeters, and choose the unit to appropriately represent the length of the object.
(3) Knowing the meter ruler, you can measure the length of an object with the meter ruler.
(4) Understand the line segment preliminarily, and be able to distinguish and measure the length of the line segment and draw a fixed-length line segment.
The first volume of mathematics in the second grade of primary school Unit 2 Knowledge points
Unit 2: Addition and subtraction within 100 (2) 1, addition without carry.
(1) Further understand the meaning of addition in specific situations.
(2) Explore and master the calculation method of two-digit plus two-digit (no carry).
(3) Let students feel the connection between addition calculation and daily life, and further improve their problem-solving ability.
2. Carry addition
(1) Further understand the meaning of addition in specific situations.
(2) Explore and master the calculation method of two-digit plus two-digit carry addition, so as to carry out the calculation correctly.
(3) Simple practical problems can be solved by adding two numbers, which further improves the problem-solving ability.
3. Subtraction without abdication
(1) Further understand the significance of subtraction in specific situations.
(2) Explore and master the calculation method of subtracting two digits from two digits (without abdicating).
(3) further cultivate the awareness and ability to ask and solve problems.
4, abdication subtraction
(1) Further understand the significance of subtraction in specific situations.
(2) Explore and master the calculation method of two digits minus two digits, and make a correct calculation.
(3) Simple practical problems can be solved by two-digit subtraction, which further improves the problem-solving ability.
5. Applications of "more than a few" and "less than a few"
(1) Understand the practical problem of "more or less than a certain number" in specific cases.
(2) You can use the operation of learning tools to let students know which quantity they are comparing, and then what changes have taken place, and finally record it with formulas.
(3) The correct formulation can solve the corresponding practical problems.
(4) Thought and method of infiltration statistics.
6. Even increase or decrease
(1) Explore and master the calculation method of addition and subtraction within 100, and further experience the diversity of algorithms.
(2) You can use the addition and subtraction operation within 100 to solve practical problems in life and experience the diversity of problem-solving strategies.
7. Add, subtract and mix
(1) Explore and master the method of adding and subtracting mixed operations within 100, and be proficient in calculation.
(2) Improve the awareness and ability to solve simple practical problems.
8. Estimation of addition and subtraction
(1) Understand the practical significance of addition and subtraction estimation in specific situations.
(2) Master the estimation method of addition and subtraction within 100, and the estimation is correct.
(3) Cultivate estimation consciousness and improve estimation ability.
Practical activities:
(1): taller.
(1) Consolidate the knowledge and skills of length units and addition and subtraction. (estimation, measurement, calculation)
(2) Let students appreciate the interest and value of mathematics, and improve their estimation ability and hands-on operation ability.
(3) Infiltrate statistical knowledge and feel the happiness of growth.
The second grade elementary school mathematics volume 3 knowledge points
Unit 3: getting to know Horn 1, pages 38-39.
(1) Combining with the life situation, I realized that there are angles everywhere in life, and I realized the connection between mathematics and life.
(2) Through activities such as "seeing", "speaking", "folding" and "drawing", we have a preliminary understanding and understanding of the angle.
(3) Knowing the names of various parts of an angle will draw the angle correctly.
2, 40 pages -4 1 page
(1) Combining with the specific situation, he intuitively knows right angles and can draw right angle marks.
(2) Will use tools to judge whether an angle is a right angle, and will use tools to draw a right angle.
(3) You should know that the size of the angle has nothing to do with the length of the side.
Unit 4 knowledge points in the first volume of mathematics in grade two of primary school
Unit 4: multiplication (1) 1 in the table, the preliminary understanding of multiplication (lesson 1) 44 -46.
(1) Combined with the specific counting and swinging activities, I experienced the abstract process of adding with addend, felt the connection between this operation and daily life, and realized the necessity of learning multiplication.
(2) Combined with the specific situation, I experienced the process of abstracting the continuous addition formula with the same addend into multiplication formula, and realized the significance of multiplication operation and the relationship and difference between multiplication and addition.
(3) I can rewrite a serial addition formula with the same addend into a multiplication formula, write and read, and calculate the result of a simple multiplication formula by addition.
2. The Preliminary Understanding of Multiplication (Lesson 2) on page 47.
(1) can list the multiplication formula according to the addition formula, and know the names and meanings of each part in the multiplication formula.
(2) It is relatively simple to express "continuous addition formula with the same addend" by multiplication formula, which lays a foundation for further learning multiplication.
(3) Can find and put forward problems that can be solved by multiplication from life situations, and initially learn to solve simple multiplication problems.
Multiplication formula of 3 and 5
(1) Combined with the specific situation, I further realized the significance of multiplication, and experienced the calculation process of the multiplication formula of 5 and the compilation process of the multiplication formula of 5.
(2) You can use the multiplication formula of 5 for multiplication calculation and experience the benefits of using the multiplication formula.
(3) Simple practical problems in life can be solved by multiplication of 5.
Multiplication formula of 4, 2, 3 and 4 (divided into 2 class hours)
(1) Based on the specific situation, I went through the process of writing multiplication formulas of 2, 3 and 4, and further realized the method of writing multiplication formulas.
(2) We can find the arrangement rules of each group of multiplication formulas, cultivate the habit of orderly thinking and gradually develop the sense of numbers.
(3) If you master the multiplication formula of 2, 3 and 4, you can use the formula you have learned to perform multiplication and solve simple practical problems.
5. Example 5 on page 56
(1) Grasp the operation sequence of multiplication, addition and subtraction formulas in combination with specific conditions, and calculate correctly.
(2) Simple practical problems can be solved by formulas containing two-level operations, and the consciousness and ability of applied mathematics can be cultivated.
(3) Cultivate students' habit of observing and thinking from different angles, and reflect the diversification of problem-solving strategies.
(4) When doing one problem and two problems, we should expand them appropriately, guide students to discover the relationship between two adjacent formulas, and help students understand and memorize multiplication formulas.
6,6 multiplication formula
(1) experienced the process of independently exploring the multiplication formula of compiling 6, and experienced the ideas and methods of exploring new knowledge from existing knowledge.
(2) Master the multiplication formula of 6 and use it to solve some simple practical problems.