A Study on the Effectiveness of High School Mathematics Assignment Design in the Context of the “Three New” Initiatives——Taking the 2019 People’s Education Press Edition A Textbook as an Example. 教育发展 [Internet]. 2025 Dec. 31 [cited 2026 Feb. 4];1(4):47 – 52. Available from: https://ojs.gfpress.org/jede/article/view/97