There are: rational number addition and subtraction, algebraic expression addition and subtraction, one-dimensional linear equation, one-dimensional linear inequality (group), one-dimensional quadratic equation. There is nothing in geometry except the nature of parallel lines.

There are fractions, Pythagorean theorem, linear functions, inverse proportional functions, multiplication and division of algebraic expressions, properties of parallelograms, determination of parallelograms, determination of congruent triangles, ruler and ruler drawing, and so on.

There are: quadratic function, similar triangles, quadratic root, solving right triangle (trigonometric function), circle, etc.