论文部分内容阅读
在小学数学学习过程中,经常会用到转化的思想,学生可以把新的知识转化成以前学习过的知识,使新的问题迎刃而解。在学习平面图形的面积的知识时,学生借助转化思想,可以探究出平面图形的面积计算公式。笔者在执教人教版数学教材五年级上册第六单元“多边形的面积”中的《平行四边形的面积》一课时,放手让学生自主操作,探究平行四边形的面积计算公式。【教学片段】师:我们的校园里有这样两块草坪(如
In primary school mathematics learning process, often use the idea of transformation, students can put the new knowledge into the previously learned knowledge, so that new problems can be solved. When learning the knowledge of the area of a flat graph, students can explore the formula of the area of a flat graph by means of conversion thought. The author taught the PEP teaching mathematics textbook fifth grade sixth unit “area of polygons ” in the “parallelogram area ” a class, let the students operate independently to explore the area of the parallelogram formula. Teacher: There are two such lawns in our school