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《生物入侵者》是人教版课标教材八年级(上)第四单元课文。这是一篇具有现代意识、关注环保的优秀说明文。说起环保,人们头脑中闪现的是荒漠化、浊水横流、乱砍滥伐等等。认识“生物入侵”,这是环保新课题,成人不知道,孩子更不知道。然而随着经济社会的发展,开放程度增加,由来已久的生物人侵如不提上议事日程,其后果不堪设想。文本让孩子们首次植入“生物入侵”的概念,听到生物入侵敲起的警钟,并关注防范的对策,意识到自己肩上担负的环保责任。面对这样的科普说明文,语言非常浅显,而价值指向却非常独特。指导学生进行综合性自主探究学习,无疑是一种理想的教学方式。基于这种思考作如下创意:
“Biological invaders” is the fourth lesson of textbook eighth grade (on). This is an excellent description with modern consciousness and environmental protection. Speaking of environmental protection, people’s minds flashed desertification, muddy water cross-flow, deforestation and so on. Understanding “biological invasion”, which is a new topic of environmental protection, adults do not know, children do not even know. However, with the economic and social development, the degree of openness has increased, and the long-standing biological invasions, if not on the agenda, can not bear the consequences. The text allows the children to implanted the concept of “biological invasion” for the first time, hears the alarm of biological invasion and pays attention to precautionary measures and realizes that he shoulders the responsibility of environmental protection. The face of such popular science description, the language is very simple, but the value of pointing is very unique. Guide students to conduct a comprehensive study of independent inquiry, is undoubtedly an ideal way of teaching. Based on this thinking for the following ideas: