Abstract
The report on the machining and activity of children is carried out even in this continuation report in the new content. That is to clarify the significance and role on the effective utilization of natural energy for children by a scientist who lives in the region. The wind car is made from the pulley which drives the wheel using the operculum of PET bottle and windmill which grasp the energy of the wind first of all. The classroom in this year was opened to public in the plan for five days. The wind car is finally completed under the guidance of the scientist of the town by the coordination of parent and child. The child of participant carries out travel test of the window car in wind tunnel in the last day.
