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一、教材分析“DNA分子的结构”一节是新课标教材人教版必修二《遗传与进化》第3章第2节的内容,由DNA双螺旋结构模型的构建、DNA分子结构的主要特点及制作DNA双螺旋结构模型三部分内容构成。DNA分子的双螺旋结构是学生学习和理解遗传学的基础知识;是学生理解生物的多样性、特异性、物种稳定性本质的物质基础。本节内容在结构体系上体现了科学家对科学理论的认识过程和方法,是进行诱思探究教学的极好素材。在教学中,通过发挥
First, the textbook analysis “DNA molecule structure ” section is the new curriculum standard textbook PEP 2 two “genetics and evolution” Chapter 2, the content of DNA double helix structure model construction, DNA molecular structure The main features and the production of DNA double helix structure model consists of three parts. The double helix structure of DNA molecule is the basic knowledge for students to learn and understand genetics. It is also the material basis for students to understand the biological diversity, specificity and the nature of species stability. The contents of this section embody scientists’ understanding of scientific theories and methods in the structural system and are excellent materials for teaching and provoking inquiry. In teaching, through the play