初高中数学教学有效衔接的问题设计——以“绝对值”拓展教学为例

Design of Effective Connection of Mathematics Teachingin Junior and Senior High Schools--Taking “Absolute Value” Extended Teaching as an Example

以“绝对值”拓展教学为例,设计“绝对值”拓展教学思维导图,并通过立足知识源起、巧设学习支架、触及思维远点进行问题设计,探索如何在教学中进行有效衔接、平稳跨越、适度拔节,从而使学生在经历知识的深化与拓展、技能的丰富与精进的同时,体会数学活动所蕴含的思想方法,积累具有普适性的处理问题和解决问题的路径和经验.

Taking“absolute value”extension teaching as an example,this paper designs“absolute value”extended teaching mind map.Based on the source of knowledge,the research skillfully sets up learning scaffolding,touches the far point of thinking to design the problem,and explores how to effectively link up in teaching,smooth leap,moderate jointing.In this way,students not only experience the deepening and expansion of knowledge,but also enrich and refine their own skills.Meanwhile,they also experience the ideas and methods contained in mathematical activities,and accumulate universal approaches and experiences to deal with and solve problems.