Hua, Xiujuan, Yige Zhao, Shurong Sun, and Zhenlai Han. “The Cultivation of Junior Middle School Students’ Problem Awareness under the Background of Mathematics Core Literacy”. International Journal of Educational Studies 1, no. 1 (December 5, 2018): 8-11. Accessed January 27, 2021. https://academiainsight.com/ijes/article/view/15.