“可能性”是《数学课程标准》中“统计与概率”部分的教学内容,它通过刻画事件发生可能性的大小,来帮助学生了解随机现象。特级教师许卫兵在执教苏教版六年级《可能性的大小》一课时,精心选择“摸奖”这一随机事件为教学素材,引导学生用分数描述不确 “Possibilities” is the teaching content of “Statistics and Probabilities” in Maths Curriculum Standards. It helps students understand random phenomena by plotting the probability of events. Super teacher Xu Weibing coached the sixth grade of Sujian version of “the possibility of the size of” a lesson, carefully selected “lucky prize ” This random event as a teaching material, to guide students to use the scores described inaccurate