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竖式本质是一种计算工具,基于知识价值展开竖式教学,采用直观模型分小棒的操作手段,帮助学生理解竖式算理,渗透竖式背后隐含的认识价值,体现化繁为简的数学思想。本文从知识的起点即竖式产生的价值,学生的起点即竖式发展的价值,课堂的起点即竖式思想的价值,这三个方面进行论述。以教师三次试讲后的心得体会为脉络贯穿全文,追本溯源,研读教材,设计有效的教学活动,促进学生对竖式的感悟和建构,激发竖式学习的热情和智慧。
The vertical essence is a calculation tool, based on the value of knowledge to start the vertical teaching, the use of intuitive model sub-small stick means of operation to help students understand the vertical calculation, infiltration of vertical hidden behind the value of understanding, reflecting the complexity of Mathematical thinking. This article from the knowledge of the starting point that is the value of the vertical, the starting point of the student that the value of vertical development, the starting point of the classroom that is the value of vertical thinking, these three aspects are discussed. To experience the teacher after three tries to experience the context of the whole text, trace the origin, study materials, design effective teaching activities, to promote students sentiment and vertical construction, to stimulate the enthusiasm and wisdom of vertical learning.