The purpose of our study is to clarify the effects and influences on the reaction level of children through the environment learning program on three different locations of the Yamato river system<1985, 2001> and the Yodo river system<1990>. According to our analysis of children reaction level, Water Quality Monitoring Methods using aquatic animals is the effective teaching materials to raise children’s interest, understanding and attitude on their regional environmental problems, and it is necessary to carry out the environment learning program on plural different locations of the river system in order to let children realize the relationship between dirt of the river and our human life.
