小学四年级开展“认识圆”的教学实践研究

Research on the Teaching Practice of“Understanding Circle”in the Fourth Grade of Primary School

文章通过教材分析、前测、后测等一系列活动,发现四年级学生也可以认识圆.在四年级学生中开启对“圆”的发现之旅,在对比中建立“圆”的表象,在操作中感悟“圆”的特征,在辨析中形成“圆”的概念,可以启迪学生的数学思维,发展学生的探索能力.

Through a series of activities such as textbook analysis,pre-test and post test,the article founds that the fourth grade students can also understand circles.Starting the discovery of“circle”among the fourth grade students,establishing the representation of“circle”in comparison,understanding the characteristics of“circle”in operation,and forming the concept of“circle”in discrimination can enlighten students’mathematical thinking and develop their exploration ability.