Are math and civil subjects poor?

Yes, the income is not high.

Folk science: originally refers to unofficial scholars who devote time and energy to scientific exploration; Or a scholar who studies non-majors. Now it is not limited to any field. But the overall work is not very scientific, so the income is not very high.

A Record of "How Many Vegetables Are There" in Mathematics of Kindergarten in Middle Class

Mathematical substitution test

What are the majors of East China Normal University?

How to write math diary of Beijing Normal University Edition in the fourth grade of primary school mathematics?

Mathematics Olympics in the first semester of junior high school.

Definition of semigroup

Why don't first-grade children do new problems when they see them?

I hope to give me some difficult problems about cosine and sine theorems of trigonometric identity transformation in senior one mathematics.

Complete Mathematics Courseware for Junior High School (5 pieces)

A very interesting mathematical problem