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本课是湘版义务教育课程标准实验教科书《科学》三年级下册第四单元《磁铁的奥秘》中的第一课,本单元作为物质世界的探究,以“磁铁”为教学载体,设计了“神奇的磁力”、“司南的启示”、“磁铁游乐场”等三课。前两课引导学生分别探究磁铁的磁力、磁极、磁铁能指南北方向等性质和磁极相互作用的规律,后一课引导学生综合应用前两课所学的知识来解决问题,整个单元呈现的是“分—总”的结构。
This lesson is the first lesson in “The Mystery of Magnet”, the fourth unit of the third volume of science under the third-grade compulsory education curriculum standard book of science in compulsory education in Xiang version. The unit, as the exploration of the material world, uses “magnet” as the teaching carrier and designs “Magical magnetic force”, “enlightenment of Secretary Southern”, “magnet playground” and other three lessons. The first two lessons lead students to explore the magnetism of the magnet, respectively, the pole, the magnet can guide the nature of the north and the law of the interaction between the poles, the latter lesson guide students to apply the knowledge of the first two lessons to solve the problem, the entire unit is presented “Points - total” structure.