Gao, Su
Long, Haiying
Li, Dan
Yang, Luxi
Article History
Received: 9 November 2018
Accepted: 24 October 2019
First Online: 23 December 2019
Compliance with ethical standards
:
: The authors declares that they have no conflict of interest.
: Public data from ‘Trends in International Mathematics and Science Study (TIMSS) 2011’ is used in the manuscript.