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第五章蠕形动物目的:1.通过讲授蠕形动物的形态构造和生活方式,使学生了解它们对不同生活条件的适应。2.使学生了解蠕形动物和人类的关系。第二十三课时一、蚯蚓的生活方式目的:1.使学生了解蚯蚓的外部形态和生活方式是和它的生活条件相适应的。2.使学生了解蚯蚓对土壤形成的作用。重点:1.蚯蚓的外部形态。2.通过蚯蚓在土壤中的生活,说明它对土壤形成的作用。3.蚯蚓的运动。
Chapter V Demulsions Objectives: 1. To teach students how to adapt to different living conditions by teaching them the morphological structure and life style of the animals. 2. To enable students to understand the relationship between the animals and humans. Twenty-three hours a, earthworm lifestyle purposes: 1. To enable students to understand the external form and lifestyle of earthworms is compatible with its living conditions. 2. To enable students to understand the role of earthworms on the formation of the soil. Focus: 1. Earthworm’s external form. 2. Through earthworms in the soil life, indicating its role in soil formation. 3. Earthworm exercise.