In eco-matenalengmeermg（environment conscious engineering on material and processin), it is necessary to present the practical solution to the problem which is not distinct and has plural solutions. To increase the educational effect in this field，introduction of skills of problem finding solution finding and solving, that is, KJ method, brain storming and debate were tried and various effects were observed in catching the essence of collected information, combining them to unique concept and idea, presenting logically and judging democratically. At the same time they are useful in experiencing active group work.