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幼儿园公开《水果真好吃》PPT课件+教案+教具

  • 2026-04-09 12:41:04
幼儿园公开《水果真好吃》PPT课件+教案+教具

幼儿园公开课教案:《水果真好吃》

设计意图

大班幼儿正处于具体形象思维向抽象逻辑思维过渡的阶段,对数学符号的理解需要依托具体情境。水果是幼儿日常生活中熟悉且喜爱的物品,通过“水果被吃掉/拿走”的动态变化,能直观呈现“减少”的概念。本活动以“水果真好吃”为主题,结合生活化场景(如小熊吃苹果、小猴摘桃子),引导幼儿在观察、操作和表达中理解减法的意义,学会用数学语言描述问题,并体验数学与生活的紧密联系。

活动目标

1. 认知目标:学习看图编减法应用题,理解“减号”“等号”及数字在算式中的意义(如“减号”表示减少,“等号”表示结果)。

2. 能力目标:能用三句话(原有数量、减少数量、剩余数量)清晰描述减法情境,并正确列出减法算式。

3. 情感目标:积极参与数学活动,体验用减法解决生活问题的乐趣,增强合作与表达信心。

活动准备

1. 教具:PPT课件

实物道具:数字卡片(1-5)、减号“➖”、等号“=”卡片。

2. 学具:幼儿操作单(三幅图编题模板,附贴绒数字和符号)。

3. 环境布置:教室一角布置“水果店”场景(贴水果价格标签、模拟钱币、购物篮)。

重点难点

重点:理解减法算式中数字和符号的含义,能用三句话描述减法情境。

难点:区分减号“减少”与等号“剩余”的不同意义,迁移经验解决生活问题。

活动过程

一、情境导入:

1. 符号猜猜乐:

教师出示“减号➖”“等号=”“加号+”卡片,提问:“这三个符号谁见过?你们认识不认识它们?知道它们表示什么吗?

二、小熊吃苹果

1. 动态演示:

PPT展示:盘子里有3个苹果→ 一只很饿的小熊吃掉1个→ 剩余2

提问:“盘子里原来有几个苹果?小熊吃了几个?还剩几个?”

引导幼儿,并大声回答。

你们是怎么算出来的?

2. 符号对应:

教师出示数字卡片“3”“1”“2”和符号“➖”“=”,邀请幼儿上台排列成算式“3-1=2”。

解释:“3是原来的苹果,1是被吃掉的,2是剩下的;减号➖表示吃掉,等号=表示结果。”

3. 互动问答:

提问:“如果小熊吃掉2个苹果,盘子里还剩几个?怎么列算式?”(引导幼儿回答“3-2=1”)

追问:“为什么用减号?等号后面的1是什么意思?”

三、图片编题:小猴摘桃子

1. 观察与提问:

PPT展示:树上有5个桃子(静态图)→ 小猴摘走2个(动态“右移”效果)→ 剩余3

提问:“谁能用三句话讲清楚?”(引导幼儿说:“树上有5个桃子,小猴摘走2个,还剩3个。”)

2. 算式列写:

教师邀请幼儿上台用贴绒数字和符号排列算式“5-2=3”。

追问:“5代表什么?2代表什么?3代表什么?为什么用减号➖?”

3. 符号深化:

对比:“减号➖后面的2”和“等号=后面的3”意思一样吗?

解释:“减号2是被摘走的,等号3是剩下的。”

游戏:教师举数字或符号卡片,幼儿快速说出含义(如举“➖”,幼儿喊“减少!”)。

四、游戏迁移:三幅图大挑战

发放操作单(含三幅图:篮子里有4个梨→小猴摘走1个→剩余3个)。

任务:“用三句话讲清图片故事,并列出算式。”

教师巡回指导,鼓励幼儿互相讨论。

3. 展示与互评:

幼儿上台展示操作单

教师点评:“他们说的三句话清楚吗?算式对吗?哪里可以更完整?”

五、生活应用:买水果小当家

1. 情境模拟:

教师扮演“水果店老板”,幼儿用5元“钱币”购买水果(苹果1元、梨子2元)。

提问:“买1元苹果后,还剩多少钱?怎么列算式?”(引导幼儿说“5-1=4”)

2. 延伸讨论:

提问:“妈妈给你5元买2元梨子,还剩多少?用哪个算式?”(幼儿回答“5-2=3”)

追问:“如果买3元葡萄,钱够吗?为什么?”(渗透减法与比较大小)

3. 角色扮演:

幼儿分组扮演“顾客”和“老板”,用减法计算购物后的剩余金额。

以上展示仅为部分资料  

完整PPT课件  ,全套资料添加老师微信

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  1. CONNECT:[ UseTime:0.000821s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000837s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.026088s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000308s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000606s ]
  6. SELECT * FROM `set` [ RunTime:0.000202s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000589s ]
  8. SELECT * FROM `article` WHERE `id` = 491398 LIMIT 1 [ RunTime:0.000502s ]
  9. UPDATE `article` SET `lasttime` = 1775715598 WHERE `id` = 491398 [ RunTime:0.010227s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000287s ]
  11. SELECT * FROM `article` WHERE `id` < 491398 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.005331s ]
  12. SELECT * FROM `article` WHERE `id` > 491398 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.020984s ]
  13. SELECT * FROM `article` WHERE `id` < 491398 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.038688s ]
  14. SELECT * FROM `article` WHERE `id` < 491398 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.042265s ]
  15. SELECT * FROM `article` WHERE `id` < 491398 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.005266s ]
0.298693s