Focusing on design education program related to the Sus- tainable Development Goals (SDGs) for Japanese high school students, this research aims to develop a set of open- source tools that can be used to visualize the design thinking educational processes used by students. To implement a new type of SDGs related design educational program that promotes solving the world's issues in environmental and social changes, educational tools to support students in de- sign thinking processes are not available. In collaboration with teachers, we conducted a workshop with four sessions at Fukusho High School in Fukuoka City for Year 1 students under the Global Management Program. We worked with teachers to understand the design thinking processes used in the workshop and identify issues that students faced during the workshop. Through the findings, a set of visualization tools can be developed and proposed to support the students in the design thinking processes in future workshops. The visualization tool will enable students to learn freely and develop a high awareness of social issues. Also, teachers can use and adapt the tools to meet the needs of the educa- tional objectives. Besides, as an open-source, the outputs of the research can easily be contributed back to society.