用一直线将一块如图1所示的木板(一个大矩形裁去一个小矩形的余料)分割成面积相等的两部分,通常资料上介绍有3种方法,分别如图2、图3、图4所示: 笔者认为应有无数种方法, 并用几何画板在课堂教学中展示 Use a straight line to divide a piece of wood (as shown in Figure 1) (a large rectangle cuts out a small rectangle) into two parts of equal area. Usually there are 3 methods described on the data, as shown in Figure 2, Figure 3, respectively. Figure 4 shows: The author believes there should be an infinite number of methods, and the use of geometric sketches in the classroom teaching