First grade students learn the understanding of numbers, clocks and graphics.

In the second grade, I learned simple multiplication and division, understanding length units, identifying position and direction, and understanding angles.

The comprehensive application of four operations, the understanding of quality units, the understanding and calculation of rectangles, and the preliminary understanding of scores are studied in grade three.

The fourth grade studies parallelism and intersection, the basic study of statistics, the understanding and operation of irregular figures, and the study of multiples and factors.

In the fifth grade, learn to know negative numbers and decimals, the basic operation of decimals, the understanding of equations, and the addition and subtraction of fractions.

Four operations, cognitive ratio, cylinder and cone learning, positive proportion and negative proportion of sixth grade academic performance.