Ariyoshi Kusumi is a professor of Environmental Science in School of International Liberal Studies at Chukyo University in Japan. He was a visiting scientist at The Regional Environmental Center for Central and Eastern Europe in Hungary. He was also a visiting scientist in The Jacob Blaustein Institutes for Desert Research at Ben-Gurion University of the Negev in Israel. His research field covers desertification, environmental economics, environmental engineering, environmental management, environmental ethics, environmental science, and environmental education. As a representative of Hadfafi Japan (Non-Governmental Organization), he supports poverty in the Philippines.

I will discuss a general educational methodology for critical thinking and problem solving, and I will propose a systematic educational framework for judging ability. The educational methodology has five steps, which are:

1. designing alternatives to judge between/among them,
2. listing potential perspectives for the judging alternatives,
3. organizing and categorizing potential perspectives into a minimum amount of perspectives,
4. judging (selecting an alternative) from each perspective, and
5. comprehensive judging (selecting an alternative). For simple problems.

Applying this framework is easy. For complicated problems, these steps could work like a  manual o gudielines to make teaching material for teachers.