* rotation of the surface

* Surface area of cylinder

* the volume of the cylinder

* the volume of the cone

* 2. Positive proportion and inverse proportion

* Variation amount

* Positive proportion

* Draw a picture

* Inverse ratio

* Observation and exploration

* scaling of graphics

* Proportion

* Numbers and algebra

* Integer

* Decimals, fractions, percentages and ratios

* Ordinary quantity

* the meaning of operation

* Estimate

* Calculation and application

* operation method

* Numbers are expressed in letters.

* Equation

* in direct proportion, in reverse proportion

* Explore the law

* Space and graphics

* graphic understanding

* (1) lines and angles

* (2) Plane graphics

* (3) Three-dimensional graphics

* graphics and measurement

* graphics and transformation

* graphics and location

* Statistics and probability

* Statistical data

* Possibility

* Strategies for solving problems