当前位置:首页>小学教材>【一等奖小学数学教学论文】三重教材解读:小学数学概念习得的路径建构与实践——以人教版“因数与倍数”教学为例

【一等奖小学数学教学论文】三重教材解读:小学数学概念习得的路径建构与实践——以人教版“因数与倍数”教学为例

  • 2026-06-08 07:48:54
【一等奖小学数学教学论文】三重教材解读:小学数学概念习得的路径建构与实践——以人教版“因数与倍数”教学为例

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【摘要】:现行小学数学修订教材在内容增减、素材选取及编写意图上均有显著调整,对教材的精准解读是打造高效课堂、落实核心素养的关键前提。本文以五年级下册“因数与倍数”教学为载体,依托“对比研读、提炼核心、深度探究”的三重教材解读路径,通过新旧教材对比、概念本质深挖,聚焦“整除关系”核心,厘清因数与倍数的相互依存属性,破解教学中的易错点,引导学生深层理解概念本质,推动课堂教学从“教教材”向“用教材教”转型。

【关键词】:教材解读;小学数学;因数与倍数;概念习得

研读教材、整体把握教材是教师的首要专业任务,其核心意义在于穿透文本表层,透彻理解知识背后的逻辑结构、核心思想与育人价值。而“三重教材解读”是指教师在开展概念教学前,通过对比研读、提炼归纳、探究深思三个递进层次,对教材进行深度研读的专业路径。对比研读重在把握知识体系与教材变化,提炼归纳重在聚焦概念本质与教学重难点,探究深思重在领悟编者意图与育人价值。三者层层深入、有机统一,共同为小学数学概念的有效建构与深度理解提供坚实支撑。

以五年级下册“因数与倍数”为例,该内容作为新修订义务教育教科书的一部分,相较于老教材,在材料选择、呈现方式、逻辑递进上均有较大调整。这类变化既为概念教学注入了新活力,也对一线教师如何精准落实教学目标、破解教学难点提出了新挑战。正是基于这样的教学实践困惑,愈发凸显“科学解读教材—高效落地教学”逻辑闭环的重要性。

一、三重教材解读:筑牢概念习得的基础  

解读数学教材,是教师将静态文本知识转化为动态教学活动的关键路径,更是落实立德树人根本任务、实现育人目标的核心桥梁。尤其对小学数学概念教学而言,唯有依托系统、深入的教材解读,教师才能穿透文本表层,深刻把握知识背后的学科逻辑、核心思想与育人价值。[1]

(一)对比研读,把握概念体系  

对不同版本、不同修订版教材进行对比研读,是三重解读的首要环节,其核心价值在于“传承经典、突破创新”,既精准识别教材中历经实践检验的核心内容与思想方法,又通过剖析变革之处,洞察课程理念、教学方法的演进逻辑,为概念教学找准切入点。以人教版“因数与倍数”为例,修订教材与老教材的差异集中体现了“从情境铺垫到本质聚焦”的理念升级。人教版的修订教材对“因数与倍数”这一内容在材料的呈现方式和概念的定义上作了改编,具体对比见表1。

从对比可见,修订教材的变化并非简单删减内容,而是通过弱化非核心情境、强化本质探究,引导教学聚焦“因数与倍数的整除属性”这一核心,这正是对比研读的价值所在——帮助教师精准捕捉教材变革的深层逻辑,进而在教学中传承“有序思考”的经典方法,突破“概念本质理解”的教学难点,为概念体系的构建找准锚点。

(二)提炼归纳,聚焦核心要点

在对比研读的基础上,提炼归纳需聚焦概念核心要素、易错点与关联知识点,形成教学的“精准导航图”。以“因数与倍数”为例,通过提炼可明确:核心本质是“非零自然数范围内的整除关系”,相互依存是概念的关键属性;学生易错点集中在“混淆因数与倍数的依存关系、遗漏因数的有序列举”;关联知识点上,需衔接四年级“整除”铺垫内容,为后续质数、合数、最大公因数等知识筑牢基础。唯有精准提炼这些要素,才能避免教学陷入“重形式、轻本质”的误区,让概念教学更具针对性。

(三)探究深思,深挖教材价值  

探究深思的核心是领悟编者意图背后的数学思想与育人价值。“因数与倍数”教材的修订,本质是编者想通过“自主分类、本质探究”的设计,渗透“数形结合、有序思考、本质抽象”的数学思想,培养学生观察、分类、归纳的逻辑思维能力。

1.整数除法的回归:锚定概念本质本源

人教版“因数与倍数”修订教材摒弃老教材的乘法引入方式,回归整数除法核心,这一调整完全贴合本课时的概念属性与教学实际。从数学本质看,“因数与倍数”源于初等数论中的整除关系,闵嗣鹤、严士健编著的《初等数论》明确定义:设a,b是任意两个整数(b≠0),若存在整数q使 a=bq成立,则b整除a,此时b为a的因数、a为b的倍数。[2]教材例1直接给出9个整数除法算式(涵4盖整除、有余数除法两类),引导学生自主分类。正是基于这一本质,学生在分类中会自然聚焦“商是整数且没有余数”的算式,进而引出因数与倍数的概念,直抵“整除关系是概念核心”的本质,契合数论知识的逻辑起点。

2.整除概念的隐形:适配学生表述能力

人教版“因数与倍数”刻意隐去“整除”显性概念,是结合五年级学生认知特点与课时目标的精准设计。教材例1中,学生分类后,教师引导总结“当除法算式中商是整数且没有余数时,我们就说被除数是除数的倍数,除数是被除数的因数”,本质就是对整除关系的通俗表述。教材通过“判断算式是否符合‘商是整数无余数’”的具象任务,让学生在操作中感知整除关系,既规避了专业术语的表述难题,又不影响对概念本质的理解,实现了“隐性本质渗透”与“显性操作落地”的统一,完全适配本课时的教学目标。

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  1. CONNECT:[ UseTime:0.000581s ] mysql:host=127.0.0.1;port=3306;dbname=c_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000989s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000365s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000311s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000650s ]
  6. SELECT * FROM `set` [ RunTime:0.000242s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000848s ]
  8. SELECT * FROM `article` WHERE `id` = 468498 LIMIT 1 [ RunTime:0.015387s ]
  9. UPDATE `article` SET `lasttime` = 1781060684 WHERE `id` = 468498 [ RunTime:0.005430s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.001715s ]
  11. SELECT * FROM `article` WHERE `id` < 468498 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000725s ]
  12. SELECT * FROM `article` WHERE `id` > 468498 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001992s ]
  13. SELECT * FROM `article` WHERE `id` < 468498 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.004318s ]
  14. SELECT * FROM `article` WHERE `id` < 468498 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001372s ]
  15. SELECT * FROM `article` WHERE `id` < 468498 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002007s ]
0.108312s