The second volume of the third grade mathematics "1~8 unit knowledge point mind map" is collected for children

author：Master's Exams 2024-04-26 10:01:00

In Primary 3 Mathematics, students are exposed to more complex and diverse mathematical concepts that form the basis for their further study of mathematics. The mind map carefully arranges the key knowledge points of mathematics in the second volume of the third grade, covering many fields such as position and direction, division, multiplication, area, year, month and day, and the preliminary understanding of decimals. Through the learning of these knowledge points, students will not only master basic mathematical skills, but also develop a sense of space, logical thinking, and problem-solving skills. The purpose of mind mapping is to help students build a mathematical knowledge framework through clear explanations and practical applications, laying a solid foundation for future learning.

Part I: Location and Orientation

The second volume of the third grade mathematics "1~8 unit knowledge point mind map" is collected for children

This section introduces the basic concept of orientation, including southeast, northwest, and the relative relationship between them. Help students understand the concept of direction through examples from everyday life, such as the direction in which the sun rises. At the same time, it teaches how to determine one direction according to the others, and describes the relative position of objects. For example, from the Giraffe Pavilion, how to walk to Lion Mountain and Monkey Mountain.

Part II: Division

The basic concepts of division are introduced in detail, including one-digit division and two-digit division. It explains how to perform oral and written calculations, and how to deal with the situation that there are 0s in the middle of the quotient or 0s in the end. In addition, the estimation method and the technique of dividing are introduced, i.e., the result is verified by multiplying the quotient by adding the divisor to the remainder.

Part III: Multiplication

This part involves the multiplication of two digits by two digits, including oral and written arithmetic methods. The concept of carry is emphasized and specific calculation steps are provided. At the same time, the application of multiplication is demonstrated through practical problems such as counting the number of pots on the trellis and the total number of eggs.

Part IV: Area

The concept of area and commonly used units of area, such as square centimeters, square decimeters, and square meters, are introduced. The calculation method of the area of a rectangle and a square is explained, and the concepts of perimeter and area are distinguished. Deepen students' understanding of area units and calculation methods through examples, such as calculating the area of a blackboard face.

Part V: Year, Month and Day

This section explains the concepts of year, month, and day, including the calculation of time in a 24-hour clock and how to identify the big and small months. The difference between a common year and a leap year is described, and the number of days in a year is determined by different methods, such as with the help of clock faces or columnar calculations.

Part 6: Preliminary Understanding of Decimals

Finally, the document describes the components of decimals, including the integer part, the decimal point, and the decimal part. It explains how to read and write decimals, as well as the addition and subtraction of decimals. By comparing the size of decimals, students will understand the rules of comparing decimals and deepen their understanding through practical examples.

Part VII: General Review

This part may be a summary and review of the previous knowledge points, including division, statistical tables, collocation combinations, etc., but due to incomplete content, it cannot provide a detailed summary. This section may include practice questions or review questions to help students reinforce what they have learned.