Postal code: 20003 1

Mailing address: Yongfu Road 123, Shanghai.

Submission email :xxyujs@sohu.com

Title: New Century Primary School Mathematics Teacher

Postal code: 100088

Mailing address: course center Mathematics Studio of Beijing Normal University, No.20 Xinde Street, Xicheng District, Beijing.

Submission email: xsjmath @163.com.

Name of publication: Mathematics education in primary schools

Postal code: 1 1003 1.

Mailing address: No.29 Ningshan Middle Road, Huanggu District, Shenyang

Submission email :xxsxjy@263.net