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学生在生活中已接触过有关物体轻重的问题,但由于表示物体轻重的质量单位不像长度单位那样直观形象,不能靠眼睛观察得到,只能借助工具来感知,因此这部分知识的教学必须注重引导学生进行体验式学习。日前,我有幸观摩了特级教师张锡义执教“千克的认识”一课,感受颇深,现撷取其中精彩的教学片断与大家共享。一、游戏导入,感知物体轻重师:同学们,我们来做个游戏。(拿出两个同样规格的盒子,大小一样,但轻重不一样)老师这儿有两盒物品,请你们
Students have come into contact with the issue of the severity of objects in their lives. However, since the quality units that represent the severity of objects are not as intuitive as the length units and can not be observed by eyes, they can only be sensed by means of tools. Therefore, teaching of this part of knowledge must pay attention to Guide students to experiential learning. Recently, I was fortunate enough to observe the lesson of the teacher Zhang Xi-yi who taught “Knowledge of Kilograms” and feel deeply. Now I am able to share the wonderful teaching pieces with you. First, the game is imported, perceived weight master: classmates, we have to be a game. (Out of two boxes of the same size, the same size, but the severity is not the same) the teacher here has two boxes of items, please you