One effort toward instilling environmental care in students is the development of environment-based supplementary reading materials. The objectives of this article are to investigate the need of junior high school students for environment-based supplementary reading materials, and to develop environment-based supplementary reading materials suitable for these students. The subjects of this research and development were eighth grade students of a junior high school. The resulting reading material has been developed into three units, each unit consisting of a list of new vocabulary, a comic, a main text, and exercises. The exercises at the end of each unit have the purpose of confirmation. The texts aim to convey an ideal relationship between humans and environment.