论文部分内容阅读
冀教版数学四年级下册第四单元《分数的认识》是学生学习分数的开始,本单元的特点是概念较多,比较抽象,学生在学习的过程中容易混淆。如:把一根2米长的木条锯成同样长的4段,每段是这根木条的几分之几?每根长几分之几米?测评中我们发现,学生出现的主要问题是:不清楚从哪个角度进行思考?不知道谁做被除数?归根到底是数学概念在课堂中未得到有效攻克,成为学生认知上的漏洞。为了有效进行概念教学,我认为需要建构小学数
Ji Piao Mathematics fourth grade under the fourth unit “understanding of the score” is the beginning of the student learning scores, the unit is characterized by more concepts, more abstract, easy to confuse students in the learning process. Such as: a 2-meter-long sawing into the same length of 4 sections, each section is a few minutes of this piece of wood? Each length of a few meters? Assessment we found that the main problems students : Do not know from what point of thinking? Do not know who do the dividend? In the final analysis is the concept of mathematics in the classroom did not get an effective capture, a cognitive vulnerability of students. In order to effectively carry out the concept of teaching, I think the need to build primary school