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幼兒園大班科學(xué)活動(dòng)《圈畫數(shù)群》

出處：媽媽育兒網(wǎng)日期：2016-06-02 13:47:59編輯：xixi

活動(dòng)目標(biāo)：

1.能根據(jù)總數(shù)將兩個(gè)數(shù)群圈畫在一起，并用加法算式記錄，學(xué)習(xí)9的加法。

2.嘗試根據(jù)總數(shù)和一個(gè)圈畫出的數(shù)群，列出減法算式，學(xué)習(xí)9的減法

重點(diǎn)難點(diǎn)：

學(xué)會(huì)在總數(shù)中圈畫數(shù)群，并列出加減法算式。

活動(dòng)準(zhǔn)備：

1.小貓圖片（見(jiàn)附件圖一、圖二）

活動(dòng)過(guò)程：

一、通過(guò)游戲，復(fù)習(xí)9的組成。

老師：出示數(shù)字卡片1 我的朋友在那里。 

幼兒：你的朋友在這里（出示8的數(shù)字卡片）

運(yùn)用找朋友的形式幫助幼兒復(fù)習(xí)9的組成。

二、圈畫小貓，學(xué)習(xí)9的加法。

出示掛圖

老師：圖上面有什么？每群小貓各有幾只？

幼兒：圖上有9只小貓，第一群有5只，第二群有4只。

老師：我們可以用一道什么算式來(lái)表示小貓一共有多少只呢？

5+4=9

老師:算式中的5表示什么？（表示第一群小貓有5只）

4表示什么？（表述第二群小貓有4只）

9呢？ （表示第一群和第二群合起來(lái)一共有9只小貓）

三引導(dǎo)幼兒借用老師講的方法探討9的減法并計(jì)算。

四、知道幼兒操作幼兒用書上第26的內(nèi)容。

裝鉛筆

老師：請(qǐng)根據(jù)每個(gè)筆筒上的數(shù)字，用與筆筒相同的顏色筆圈畫兩組數(shù)目與之對(duì)應(yīng)的鉛筆再與之連線，列出算式。

氣球傘上的老鼠

老師：根據(jù)每個(gè)氣球傘上的小老鼠的數(shù)目，算算如果每個(gè)氣球上坐滿9個(gè)老鼠，各需要再畫上幾只，請(qǐng)?jiān)诜娇蛑刑钌蠑?shù)字并用算式記錄。

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