《动物和环境》主要讲述动物与环境的关系。教材中,编者将“蚯蚓的生活环境”实验作为一个主线和实例加以探讨,因此,指导学生做好这个实验,使学生懂得各种动物都生活在不同的环境中,是这一课的主要教学目的。 做“蚯蚓的生活环境”实验,首先需要大量的蚯蚓,这 Animal and Environment focuses on the relationship between animals and the environment. Textbook, the editor of the “earthworm living environment” experiment as a main line and examples to be explored, therefore, to guide students to do this experiment so that students know that all kinds of animals are living in different environments, is the main teaching of this lesson purpose. To do “earthworm living environment” experiment, first of all need a lot of earthworms, this