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估算是学生不可或缺的数学素养,应该在日常教学中渗透,形成估算意识;在辨析比较中体验,感受估算价值;传授估算策略,提高估算能力;在课外实践中积累,提升数学素养。
Estimation is indispensable to students’ mathematical accomplishments. They should be infiltrated in daily teaching to form an awareness of estimation. Experiences and feelings should be evaluated in comparison and analysis. Estimation strategies should be imparted to improve estimation ability. In extracurricular practice, mathematics literacy should be accumulated and improved.