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What does Qingdao Mathematics Sixth and Third Edition mean?
Both the May 4th system and the June 3rd system belong to nine-year compulsory education. Different countries and regions use different versions of textbooks. Qingdao Edition is a textbook produced by Qingdao Publishing House.

The May 4th system is five years in primary school and four years in junior high school, and the 63rd system is six years in primary school and three years in junior high school. This comes from the formulation of the school education department. Due to the asymmetry of time, the contents of the version are different and need to be clarified.