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活动目标1.感受顺数、倒数在生活中的应用,体验数学活动的乐趣。2.感知10以内的倒数,了解倒数逐个少1的数量关系。3.发展观察、比较及推理的能力。活动准备经验准备:已学过10以内的顺数,并理解10以内相邻两数多1和少1的关系。材料准备:课件(包括过天桥、红绿灯,乘电梯,火箭发射倒计时的视频)、不同颜色挂卡(背面为密码卡底图)、笔等。环境创设:在地板上张贴标着数字1~10的火箭格子图(红黄蓝绿)4组。
Activity goals 1. Feel the use of the cis, reciprocal in life, to experience the fun of mathematical activities. 2. Perceive the reciprocal of less than 10, to understand the reciprocal number of less one by one relationship. 3. Develop the ability to observe, compare and reason. Preparation for activity preparation: Have learned the order of less than 10, and understand the number of adjacent two more than 1 and less than 1 relationship. Material preparation: courseware (including overpasses, traffic lights, take the elevator, rocket launch countdown video), different colors hanging card (the back of the password card base map), pens and so on. Environment Creation: On the floor, 4 rocket grids (red, yellow, blue and green) marked with the numbers 1 to 10 are posted.