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一、教材与学情分析1.“铝”教材中的地位和作用:铝是地壳中含量最多的金属元素,而且铝及铝合金是当今社会使用非常广泛的金属材料,本节课重点介绍铝的性质,以及它在生产生活中的应用,是安排在学习了非金属氯、溴、碘和金属钠、镁的性质之后,这样的安排起到了承前启后的作用,不仅使学生了解钠、镁、铝的金属活动性的差异,也为后面元素周期律的学习奠定了基础。幑制
First, the textbook and analysis of the situation 1. “Aluminum ” textbook status and role: Aluminum is the most abundant metal elements in the crust, and aluminum and aluminum alloy is today’s society to use a very wide range of metallic materials, the focus of this lesson The introduction of the nature of aluminum and its application in production and living are arranged to play a role of bearing in the lead not only in understanding the nature of the non-metallic chlorine, bromine, iodine and metallic sodium and magnesium, Magnesium, aluminum metal activity differences, but also for the back of the periodic law of the study laid the foundation.幑 system