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小朋友,我们一起来学习人教版数学课标实验教科书一年级上册第八单元“20以内的进位加法”。学习时要充分运用已有的知识和经验,借助解决实际问题列式计算,探索多种计算方法;通过动手操作或观察,理解算理,掌握计算方法;在逐步脱离实物的
Children, we work together to learn the PEP classroom math standard experimental textbook eighth grade unit “within 20 addition”. Learning to make full use of existing knowledge and experience, with the help of column solving to solve practical problems, to explore a variety of calculation methods; through hands-on or observation, understanding of arithmetic, to master the calculation method; gradually out of the physical