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Introduction to mathematical thinking: 1-6 grade knowledge outline!
First-year math:

Counting: Count with numbers to know the basic integer sequence.

Addition and subtraction: the basic concept and simple calculation of addition and subtraction, such as1+1= 2,2-1=1etc.

Basic geometry: the identification and distinction of plane figures (squares, triangles, circles).

Time and date: know the clock time and calendar, know the week, month and season, etc.

Second grade mathematics:

The concept and calculation of addition and subtraction;

Comparison of number sizes;

Basic concepts such as classification, sorting, comparison and combination;

Understanding, splitting and combination of two digits;

Measurement in daily life, such as time, length, weight, etc.

Simple basic concepts such as geometry, direction and position.

Third grade mathematics:

Further understanding, calculation and application of addition, subtraction, multiplication and division;

Understanding and application of integer 10 and integer 100;

Concepts and applications of fractions, clocks and calendars;

Understanding, splitting and combination of three digits;

Understanding and classification of plane graphics and three-dimensional graphics;

Collection, arrangement and display of data;

Understanding and application of quantitative relations, such as multiples, divisors, factors, etc.

Fourth grade mathematics:

Understanding and calculation of decimals;

Calculation, conversion and application of scores;

Understanding and application of the concepts of remainder division and multiple division;

Understanding and properties of geometric figures such as triangle, quadrilateral and circle;

Measurement and calculation of length, area and volume;

Statistical analysis and chart representation of data;

Understanding and application of quantitative relations such as time, speed and proportion.

Fifth grade mathematics:

Understanding, extension and application of decimal number;

Application of fractions, percentages and proportions;

Calculation and application of fractions and decimals;

Understanding and properties of geometric figures such as parallelogram, trapezoid and pyramid;

Concepts such as position relation, direction and projection in three-dimensional space;

Calculation of surface area and volume of three-dimensional graphics;

Statistical analysis, reasoning and prediction of data.

Sixth grade mathematics:

Algebraic knowledge, including positive and negative numbers, algebraic expressions, equations and inequalities;

Geometric knowledge, including triangle, cone, cylinder, sphere, geometric proof, etc.

Probability statistics, including the calculation of event probability, statistical sampling and result prediction;

Digital operation, including four operations of large numbers, calculation of fractions, decimals and percentages;

Knowledge of space, such as Euclidean geometry and analytic geometry;

Practical problems and practical problems.