请你做出我上传题目的讲解视频。在视觉效果上我希望更适合中国小学三年级学生理解学习。并且希望可以通过视频让学生感觉到趣味从而提升兴趣。---**Question (5) Stem:** 去年王爷爷用长24米的篱笆围了块长7米，宽5米的长方形菜地。今年王爷爷要用同样长的篱笆，一边靠墙再围一块菜地。 **Sub-question ① Stem:** ① 欣欣说她的围法面积最大（如下图）。你是否同意她的想法？请你用自己喜欢的方式，写出你的理由。 **Chart/Diagram Description:** * **Type:** Diagram illustrating a proposed way to enclose a rectangular area using fencing and a wall, along with a cartoon character. * **Main Elements:** * A cartoon girl labeled "欣欣" is standing to the left of the diagram. * A wall is represented by five adjacent gray rectangular blocks horizontally oriented at the top. It is labeled "墙" (Wall). * A rectangular area is enclosed by three sides of fencing attached to the wall. Two vertical sides extend down from the wall, and one horizontal side connects the bottom ends of the vertical sides. * The dimensions of the enclosed rectangular area are labeled: * The left vertical side is labeled "8米" (8 meters). * The right vertical side is labeled "8米" (8 meters). * The horizontal side opposite the wall is labeled "8米" (8 meters). * **Relative Position:** The enclosed rectangular area is positioned below the wall, with its top side adjacent to the wall. The girl "欣欣" is to the left of the wall and the enclosed area.