Abstract
The purpose of education is essentially to make it possible for people to live freely. If society changes, its purpose will have to change according to it. The OECD is developing the Education 2030 project to examine the competency required in the near future of 2030 and consider the curriculum, teaching and learning, assessment and evaluation, and others that will lead to the development of such competencies. In this paper, I discussed the need to multilayering mathematics education to foster such competencies, including data science. Also I introduced the case “Let’s save more lives with AEDs” for fostering them at junior high school.