In mathematics and science education, it is important for children to acquire the ability to think logically and creatively and solve various phenomena and problems that occur in nature, life, society, etc. In recent years, with the rapid changes in society due to the development of Artificial Intelligence (AI) and Internet of Things (loT), efficient handling of large amount of data, and the disaster of coronavirus, etc. advanced teaching method is required. In other words, instead of memorizing and using knowledge, children themselves should acquire the ability to think logically and create new knowledge and value with a deep understanding. For that purpose, it is becoming more and more important for children to learn how to think, such as "why it happens" and "what is the basis". The purpose of this society is for researchers in mathematics and science education around the world to develop teaching principles and methods, etc. with deep understanding for children, and to contribute to the development of mathematics and science education around the world. Please tell us your ideas and opinion.