This is a research to help understand how human development programs at a university can help students improve their understanding of the international communities. The programs are based around the concept of ESD (Education for Sustainable Development). The authors have been trying to refine classes based on Model United Nations (MUN) for two years since 2005. What we have learned is that it is necessary to explain to students how different programs are interrelated to each others. In the efforts to do so，we examined how the classes should be conducted，how to improve the coordination between classes，and what textbooks may be used. ESD proposes to realize sustainable development，and in order to achieve it，various kinds of participatory education methods are proposed with approaches from many different academic fields. Those proposals can be valuable for many different academic fields，for university departments，and for this current research. We experimented with a few activities，i.e. participatory education methods，in our classes. We also tried to coordinate and combine those methods and Model United Nations. Finally，we produced a curriculum map and examined to create textbooks. What we have leamed in this research are as follows: (1) one can expects more active class discussions among students by combining games (as participatory education methods) and Model United Nations，(2) Conducting informal debates in English as a part of the Security Council at Model United Nations can be a valuable education tool，(3) Curriculum mapping can be valuable，a nd (4) Related websites can assist students better than textbooks.