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教学内容:北师大版二年级下册第18-20页。活动目标:1.在实践活动中加深对物体质量单位的认识,掌握估计物体质量的方法。2.经历“称”的过程,通过各种活动对质量有进一步的体验,经历收集、整理数据的过程。3.在生活中,乐于与人合作、与人分享,体会数学与生活的紧密联系,激发学生学习数学的兴趣。活动重点:掌握估计物体质量的方法。活动难点:建立质量单位的概念。
Teaching content: Beijing Normal University version of the second grade volume 18-20 pages. Activities Objectives: 1. In practice activities to deepen understanding of the quality of the unit to grasp the method of estimating the quality of the object. 2. Experiencing “weighing ” process, through a variety of activities on the quality of further experience, through the process of collecting, sorting data. 3. In life, be willing to cooperate with others, share with others, experience the close connection between mathematics and life, to stimulate students interest in learning mathematics. Activities focus: master the method of estimating the quality of objects. Activities difficult: the establishment of the concept of quality units.