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部编版小学数学三年级下册核心素养教案

  • 2026-04-06 14:55:28
部编版小学数学三年级下册核心素养教案

部编版小学数学年级下册核心素养教案 

课题:开学第一课——新学期数学之旅

课时:1课时

一、教学目标

知识与技能:了解本学期数学学习内容框架(100以内数的认识与加减法、平面图形、人民币、数量关系),感知数位(十位、个位)、平面图形特征等核心概念。

过程与方法:通过情境体验、动手操作、合作交流,经历“观察—发现—归纳”的学习过程,培养数感、几何直观、应用意识等核心素养。

情感态度价值观:感受数学与生活的密切联系,激发探究兴趣,树立“用数学解决问题”的信心,初步形成主动学习的习惯。

二、教学重难点

重点:明确学期学习内容,建立“数学源于生活”的认知,初步感知数位、平面图形等核心概念。

难点:将抽象的“数位”“图形特征”与具体生活情境关联,体会数学的应用价值。

三、教学准备

素材:教材“致同学”页截图、目录页截图(PPT展示);插画中“十位/个位”白板图、孩子拼组图形场景图。

实物:人民币样币(1元、5元、10元)、平面图形卡片(长方形、正方形、三角形、圆、平行四边形)、生活物品(书本、魔方、钟表、硬币等含图形的物体)。

工具:白板(模拟插画中的数位框)、磁性图形贴、小组任务卡。

四、教学过程

(一)情境导入:致同学的问候(5分钟)

回顾旧知:师生共读“致同学”片段,提问:“上学期我们认识了20以内的数,学会了哪些本领?”(引导学生回忆:数数、加减法、简单图形)

引出新课:展示插画(孩子围白板学“十位”“个位”),说:“这学期,聪聪将带我们继续漫游数学世界!今天先看看‘旅行地图’——本学期学什么?”

(二)探索新知:新学期“数学地图”(15分钟)

解读目录,构建框架(结合目录页):

教师指目录说:“我们的旅程分7站,每站都有新挑战!”

第一站:认识平面图形(1页):像书本(长方形)、魔方(正方形)、钟表(圆)的面,还有拼组游戏!

第三站:100以内数的认识(23页):比20更大的数,要学会用“十位”“个位”表示(指向插画白板),比如35是3个十和5个一。

第四、五站:100以内加减法(43/56页):口算快又准,笔算讲方法,帮我们解决“买东西多少钱”的问题。

第六站:数量间的加减关系(69页):比如“苹果比梨多几个”,用数学表达生活问题。

第七站:欢乐购物街(77页):认识人民币,模拟购物,当“小管家”!

核心渗透:强调“数与代数”(数、加减法、数量关系)、“图形与几何”(平面图形、拼组)、“综合与实践”(购物街)三大领域,培养分类与整合意识。

聚焦核心概念,初步感知

数位体验:白板画“十位”“个位”框,请学生用蓝色圆点(模仿插画)摆“25”(2个十放十位,5个一放个位),理解“数位意义”(数感、符号意识)。

图形探秘:分发图形卡片,小组合作找“生活中的图形朋友”(如红领巾是三角形、地砖是正方形),贴在黑板上,感知图形特征(几何直观、空间观念)。

(三)互动体验:小小数学家行动(15分钟)

活动1:“图形拼组秀”(对应“认识平面图形”):

每组发一套图形卡片,限时3分钟拼图案(房子、小船等),展示并说“用了哪些图形”,体会“图形组合创造美”(创新意识)。

活动2:“模拟购物街”(对应“欢乐购物街”):

设“文具店”(铅笔1元、橡皮5角、笔记本3元),学生用样币“购买”两样物品,计算总价(如1元+3元=4元),教师巡视指导“元角换算”(量感、应用意识)。

(四)总结延伸:我的数学目标(5分钟)

学生分享:“这节课知道了这学期要学,我最想挑战(如拼图形、购物算钱)。”

教师寄语:结合“致同学”结尾“一起出发吧”,鼓励学生:“用数学眼光观察生活,用数学思维解决问题,你就是最棒的数学探险家!”

五、板书设计

复制

新学期数学之旅
┌───────────────┬───────────────┐
数与代数图形与几何
• 100以内数• 平面图形:
(十位/个位)长方形 正方形 │
• 100以内加减法三角形 圆 平行│
• 数量关系四边形
• 欢乐购物街• 拼组活动
└───────────────┴───────────────┘
核心素养:数感·几何直观·应用意识·创新意识
目标:用数学解决生活问题,做智慧探险家!

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  1. CONNECT:[ UseTime:0.001038s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001507s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000616s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000646s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001294s ]
  6. SELECT * FROM `set` [ RunTime:0.000583s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001323s ]
  8. SELECT * FROM `article` WHERE `id` = 473771 LIMIT 1 [ RunTime:0.000997s ]
  9. UPDATE `article` SET `lasttime` = 1776057086 WHERE `id` = 473771 [ RunTime:0.002033s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000555s ]
  11. SELECT * FROM `article` WHERE `id` < 473771 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000877s ]
  12. SELECT * FROM `article` WHERE `id` > 473771 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001049s ]
  13. SELECT * FROM `article` WHERE `id` < 473771 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.004470s ]
  14. SELECT * FROM `article` WHERE `id` < 473771 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.004867s ]
  15. SELECT * FROM `article` WHERE `id` < 473771 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.020028s ]
0.205902s