加强动手操作是小学数学教学方法改革的发展趋势之一,世界各国近年来的教学方法改革中都比较重视学生的学具操作,因为学具可以充分调动学生学习兴趣,有效的帮助学生建立数学模型,从而更好的理解和掌握数学 Strengthening hands-on operation is one of the trends in the reform of primary school mathematics teaching methods. In recent years, teaching methods reform in all countries in the world have placed more emphasis on student learning operation because learning tools can fully mobilize students’ interest in learning and effectively help students to establish mathematical models , So as to better understand and master math