Preparation: ratio of integer to divisible fraction and proportional cylindrical cone
Junior one: I don't know.
Grade two: function and geometry (triangle and quadrilateral), application problems.
Function is a linear function, which is divided into inverse proportional function (y=k/x) and positive proportional function (y=kx).
Grade three: quadratic function
Definitely incomplete. It is strongly recommended that the landlord buy textbooks, which are very cheap.