1. Classification of graphs:

Classification of geometric figures, such as triangles, quadrilaterals, polygons, etc.

According to the properties of edges and angles, different kinds of graphs are introduced.

2. The nature of the graphics:

The characteristics and properties of various geometric figures, such as the classification of triangles, the properties of right triangles, isosceles triangles and equilateral triangles.

Classification of quadrilateral, properties of parallelogram, properties of rectangle, square and diamond;

Properties of the sum of inner and outer angles of polygons.

3. The use of graphics:

Solve problems by using graphic properties, such as calculating the area and perimeter of graphics;

Using the properties of similarity and congruence to solve practical problems.

4. Space geometry:

Types and properties of three-dimensional graphics, such as cuboid, cube, cylinder, cone, etc.

Calculation method of surface area and volume of space figure.

Design of mind map: Mind map can be divided and classified according to the main knowledge points of the unit, centering on the theme and surrounding the nature, classification and application of graphics. Specific graphics, attributes and applications can be listed under each branch. Show the logical structure and internal relations of unit knowledge by means of graphics, colors and keywords.

Suggestions on learning methods:

Making mind map is an effective way to review unit knowledge, which can help to sort out ideas and strengthen memory.

Combine examples and exercises to consolidate and deepen the understanding and mastery of knowledge.

When learning, we should pay attention to understanding the essence and application of graphics, and do more practical calculations and applications.

Through the construction and application of mind map, we can better sort out the key knowledge of Unit 6 of Book 5 of Mathematics, help memory and review, and improve the overall grasp of mathematical concepts.