“植树问题”通常老师们会采用化归的思想方法解决植树问题,然而在一次俞正强名师工作室活动中,俞老师却从另一个层面——“平均分运算”的角度演绎了这节课,并通过一系列提问,启发孩子们深刻理解“点”与“段”问题的区别,引领学生掌握植树问题的本质,看似“随意”的背后,彰显着俞老师对本节课的智慧解读,如此巧妙设计与理解,让学员们醍醐灌顶,拓宽了看课堂的视角,提升了看课堂的深度。【片段一】俞老师先在黑板上呈现两道题: “Tree planting problem ” Usually the teachers will adopt the thought of returning to solve the tree planting problem, but in a Yu Zhengqiang teacher studio activities, Yu teacher from another level - “average division operation ” point of view Through this series of lessons and through a series of questions, the children are inspired to deeply understand the differences between the “dot” and “paragraph” problems and lead the students to master the essence of the tree planting problem. It appears that behind the “random” Yu teacher of this lesson to understand the wisdom, so clever design and understanding, so that students stamina, broadening the classroom perspective, enhance the depth of the classroom. A】 【fragment Yu teachers first presented two questions on the blackboard: