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What aspects does the intuition of mathematical geometry in primary schools include?
That is:

main points

line

face

body

For example, it can be manifested in:

corner of walls

-It is obtained by the intersection of three lines at one point.

Line:

Ceiling and wall are straight lines (line segments) formed by the intersection of two planes.

Face:

Blackboard, desktop and plain paper can all be regarded as planes.

Text:

Books, pens, chairs and electric lights can all be used as articles.

The above belongs to the teaching content.

Second, in the teaching process.

Use intuitive objects. -From promotion to understanding and mastery.

Third, teaching methods.

Can be heuristic, and use questions and answers as little as possible.

Fourth, class discussion can be held (foreigners call it Siminar). For the convenience of memory.