小学数学教学中的数学情境与提出问题——“丢失的面积”教学案例

Teaching Case of the Lost Area

“设置数学情境—提出数学问题—解决数学问题—注重数学应用”是“数学情境—提出问题”教学的主线.“数学情境—提出问题”教学可以促使学生自主探究,促进学生主体地位的实现;促进学生问题意识的培养;促进教师提高业务素质,转变教学观念.

Through operating, probing and discussing, we solved the problem about exterior area decrease in putting and meeting square body and cuboids body, ranging to the pertinent problem of exterior area increase in comminuting polyhedron distinguishingly putting and meeting graphics in which exterior area was out of change. Let the students put and meet freely and radiated imagination, thus inspiring students interest of explorative study.