【教学内容】北师大版小学数学五年级下册2-3页。【教学目标】1.结合具体情境提出问题、解决问题,进一步培养学生的问题意识,感受计算的应用价值;2.经历异分母分数加减法计算方法的探究过程,通过动手操作、观察比较、讨论交流等理解算理,形成算法,能正确进行计算,发展并培养学生的转化思想;3.在学习过程注重培养学习数学的积极情感,增强学习数学的自信心,提高对民族文化的认同感。 【Content】 Beijing Normal University Primary School Maths grade two volumes 2-3 pages. Teaching Objectives 1. Combining specific situations to raise questions and solve problems, and further develop students’ awareness of problems and feel the value of computing; 2. Experiencing the process of researching the method of addition and subtraction with different denominators, through hands-on operation, observation and comparison, Discuss the exchange and other comprehension of the algorithm, the formation of algorithms that can correctly calculate, develop and train students thinking of transformation; 3 in the learning process focus on developing positive emotions of learning mathematics, enhance self-confidence in learning mathematics and enhance the identity of national culture .