“…There is a great deal of research in the field of mathematics teaching that concerns the connection of mathematical knowledge to the real world for different levels, from elementary to college in Vietnam, such as (Dung, Duyen, An, Giang, & Phuong, 2019;Nam, 2016;Nghi, 2018;Tam & Ngu, 2017;Tong, Loc, Uyen, & Giang, 2019;Trung, 2018;Trung, Thao, & Trung, 2019;Vui, 2018), etc. The findings of those studies also focus on various aspects such as mathematical culture, the connection of mathematics with reality, mathematical competencies, organization of mathematics lessons to use mathematical knowledge for solving mathematical problems with useful contents or practical issues to develop and enhance learners' mathematical abilities.…”