“丁零零……”下课铃响了,隔壁班的同学如小鸟般飞出了教室,可这个班却是个例外。好奇的同学们趴在窗外观看,只见里面热闹极了,大家的双手在不停地转动着一个玩意儿。他们在弄什么呢?当当当,请看大屏幕——魔尺变变变!大家可要瞧好喽,我们能随意转动魔尺上的每一个三角形的方向,让它随意变化,转出各种各样的形状。我们一个个热情高涨,用自己的智慧转出了一个个好看的形状。看,那一个个精美的作品在我们的巧手中诞生了! “Ding zero ... ” The bell rang, next door classmates like a bird flying out of the classroom, but this class is an exception. Curious classmates lying on the window to see, I saw very lively inside, everyone’s hands kept turning a gadget. What are they doing? Dangdang, see the big screen - the magic ruler change! We have to look good myself, we can freely rotate the magic ruler on the direction of each triangle, let it free to change out of each Various shapes. We are one by one enthusiasm, with their own wisdom turned out a nice shape. Look, that a beautiful work was born in our skilled hands!