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幼兒園大班科學(xué)活動(dòng)《秤》

出處：媽媽育兒網(wǎng)日期：2016-05-13 12:19:42編輯：xixi

活動(dòng)目標(biāo):

1. 初步了解桿秤的使用方法。

2. 探索不同秤在買賣活動(dòng)中的作用。

重點(diǎn)難點(diǎn):

探索不同秤在買賣活動(dòng)中的作用。

活動(dòng)準(zhǔn)備:

1. 幼兒用書(shū)：《秤》。

2. 教學(xué)電子資源：《秤》。

3. 1把桿秤、幾本書(shū)、幾個(gè)水果。

活動(dòng)過(guò)程:

一、 通過(guò)提問(wèn)，引發(fā)幼兒對(duì)買賣活動(dòng)中計(jì)量工具的討論。

1. 你們和家里人去超市或者去菜市場(chǎng)買菜的時(shí)候，怎么知道你的菜要付多少錢(qián)呢？

2. 這些工具怎么用？它們是測(cè)量什么的工具？

二、 教師出示桿秤，用它可以幫助我們測(cè)量要購(gòu)買東西的重量，這樣就可以計(jì)算出錢(qián)數(shù)了。

1. 這個(gè)秤有幾部分組成？它們分別叫什么？

2. 怎么操作桿秤呢？誰(shuí)愿意來(lái)試一試？

3. 掛上物體后，桿秤的另一端要怎樣才表示稱好了？怎么控制這一端是翹起來(lái)的還是低下去的呢？

4. 這本書(shū)與那本書(shū)筆，誰(shuí)更重？真的是這樣嗎？我們來(lái)稱一稱。

5. 是這些水果重還是這幾本書(shū)重？先猜一猜，我們?cè)賮?lái)驗(yàn)證一下。

三、 請(qǐng)幼兒閱讀幼兒用書(shū)，展示教學(xué)電子資源中的圖片，幫助他們認(rèn)識(shí)更多測(cè)量重量的工具。

1. 還有哪些工具也可以用來(lái)測(cè)量重量呢？他們用在什么地方呢？

2. 為什么我們常用的桿秤這么大？而中藥鋪里用的桿秤這么小呢？

3. 猜一猜哪些是秤是電子的，哪些秤不是電子的。你是根據(jù)什么判斷的呢？

4. 天平是怎么稱重的？天平一側(cè)托盤(pán)里的金屬是什么東西？根據(jù)什么知道東西的重量？

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