“鸡兔同笼”是我国经典名著《孙子算经》中的数学名题,编入小学数学教材的目的,不是就题解题,也不是解决生活中的实际问题,真正的意图在于通过这个问题帮助学生亲身经历并建立数学模型,在建模的过程中学习思维和推理,借助模型结构分析的方法提炼数学的精髓,掌握解题策略,积累数学活动经验。在“鸡兔同笼”课例学习中学习枚举策略,学习猜测、 “Chicken and Rabbit with the cage ” is a classic of the Chinese classics, “The grandson of Succeeding in Mathematics,” the title, included in the primary school mathematics textbooks, not to solve the problem, nor is it to solve the practical problems in life, the real intention is Through this problem, students can experience and establish mathematical models, learn thinking and reasoning in the process of modeling, extract the essence of mathematics through the method of model structure analysis, master problem solving strategies and accumulate experiences in mathematical activities. Learn the enumeration strategy in the “chicken rabbit cage” lesson learning, learning to guess,