综合与实践领域是一类以问题为载体、学生主动参与的学习活动,是帮助学生积累数学活动经验、培养学生应用意识与创新意识的重要途径。针对问题情境,学生综合所学的知识和生活经验,独立思考或与他人合作,经历发现问题和提出问题、分析问题和解决问题的全过程,感悟数学各部分内容之间、数学与生活实际之间、数学与其他学科之间的联系,加深对所学数学内容的理解。基于此,国庆节前一周的周五,上完了“分数乘法”这部分知 The field of synthesis and practice is a type of learning activities that takes the problem as the carrier and the students take the initiative to participate. It is an important way to help students accumulate experience in math activities and cultivate students’ awareness of application and innovation. In view of the problem situation, the students synthesize the knowledge and life experiences they learned, think independently or cooperate with others, experience the whole process of discovering and asking questions, analyzing and solving problems, and realize the relationship between the contents of mathematics and the reality of mathematics and life Between mathematics and other disciplines, deepen the understanding of the mathematical content. Based on this, the day before the National Day Friday, finished “fractional multiplication ” This part of the knowledge