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幼兒園大班科學(xué)活動《圈畫數(shù)群》

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

活動目標(biāo)：

1.能根據(jù)總數(shù)將兩個數(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)和一個圈畫出的數(shù)群，列出減法算式，學(xué)習(xí)9的減法

重點難點：

學(xué)會在總數(shù)中圈畫數(shù)群，并列出加減法算式。

活動準(zhǔn)備：

1.小貓圖片（見附件圖一、圖二）

活動過程：

一、通過游戲，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：請根據(jù)每個筆筒上的數(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)每個氣球傘上的小老鼠的數(shù)目，算算如果每個氣球上坐滿9個老鼠，各需要再畫上幾只，請在方框中填上數(shù)字并用算式記錄。

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