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《数学课程标准》特别指出,数学活动经验的积累是提高学生数学素养的重要标志,帮助学生积累数学活动经验是数学教学的重要目标。小学生数学基本活动经验主要是靠积累获得的,这种积累需要在“做”中获得,这就需要师生共同来设计有效的数学活动,在活动过程中积累发现问题、研究问题的经验。《认识分米和毫米》是苏教版二年级下册的内容,这部分内容主要引导学生通过观察、操作、交流,认识分米和毫米的含义,学习用分米和毫米作单位测量和描
The “Mathematics Curriculum Standard” specifically points out that the accumulation of experience in math activities is an important symbol of improving students’ mathematical accomplishments. It is an important goal of math teaching to help students to accumulate experiences in math activities. Primary experience of primary activities of mathematics students are mainly obtained by accumulation, this accumulation needs to be done in “doing ”, which requires teachers and students to jointly design effective mathematical activities, accumulated during the activities of discovering problems, researching experience . Recognition of decimeters and millimeters is the second edition of the second edition of the Sujian version of the content, which mainly guides students through observation, operation, exchange, to understand the meaning of decimeter and millimeter, to learn decimeter and millimeter as a unit measurement and description