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src="https://p.9136.com/00/l/ceefc0ed05_5fbf7f12db659.jpg" alt="物理教案－我們?cè)鯓勇牭铰曇?/></p> <p>課時(shí)：1課時(shí)</p> <p>知識(shí)與技能：</p> <p>（1）了解人類聽到聲音的過程；</p> <p>（2）知道骨傳導(dǎo)的原理；</p> <p>（3）了解雙耳效應(yīng)及其應(yīng)用。</p> <p>過程與方法：</p> <p>通過實(shí)驗(yàn)和生活經(jīng)驗(yàn)，體驗(yàn)人是如何聽到聲音的。</p> <p>情感態(tài)度與價(jià)值觀：</p> <p>學(xué)會(huì)關(guān)心他人，特別是關(guān)心殘疾人。</p> <p>教學(xué)重點(diǎn)：</p> <p>1、</p> <p>2、</p> <p>3、</p> <p>教學(xué)難點(diǎn) ：</p> <p> </p> <p>教具：</p> <p>教師：錄音機(jī)和錄有兒歌、瀑布聲、砂輪與工件摩擦聲、蛙鳴聲的錄音帶；</p> <p>音叉、用細(xì)線懸掛著的泡沫塑料球；</p> <p>根據(jù)情況：電視機(jī)、影蝶機(jī)、VCD光盤（可視情況而定）</p> <p>銅鑼、盛有水的玻璃水槽；</p> <p>學(xué)生：橡皮筋、小鼓、薄鋼尺、其他一些能發(fā)聲的物體。</p> <p>課前活動(dòng)：</p> <p>在教室內(nèi)放悠揚(yáng)的音樂————?jiǎng)?chuàng)設(shè)情境</p> <p>導(dǎo)入新課：</p> <p>列舉自然界中豐富多彩的聲音—————耳濡目染，感性認(rèn)識(shí)，</p> <p>實(shí)例，提出一系列一聲現(xiàn)象有激發(fā)興趣。</p> <p>關(guān)的問題，由此導(dǎo)入新課。</p> <p>進(jìn)行新課：</p> <p>一、聲音的產(chǎn)生：</p> <p>1、指導(dǎo)看圖，同時(shí)播放音像 ——— 聲情并茂</p> <p>2、歸納共同點(diǎn)引出探究?jī)?nèi)容： ——— 培養(yǎng)歸納、概括能力</p> <p>3、學(xué)生探究：聲音是怎樣產(chǎn)生的？（音叉、橡皮筋、桌子、</p> <p>鋼尺、聲帶、小鼓、小鑼等）</p> <p>①明確實(shí)驗(yàn)的目的、實(shí)驗(yàn)方法，</p> <p>②注重實(shí)驗(yàn)過程中的各種現(xiàn)象，并能歸納表達(dá)</p> <p>③觀察思考、討論作答、舉手發(fā)言</p> <p>4、引導(dǎo)探究的方法：</p> <p>提出問題→進(jìn)行假設(shè)、猜想→探究實(shí)驗(yàn)→歸納結(jié)論</p> <p>二、聲音的傳播：</p> <p> 1、探究：桌子傳聲 ————— 固體能夠傳聲</p> <p>2、空氣傳聲：聽到飛機(jī)和響聲</p> <p>3、“真空鈴”演示：——— 實(shí)驗(yàn)推理：“假如沒有空氣”呢？</p> <p>4、播放錄像“振動(dòng)的音叉激起的聲波傳入人耳”</p> <p>指導(dǎo)學(xué)生自學(xué)“想想議議”</p> <p>5、演示：液體傳聲</p> <p> 將發(fā)聲的門鈴放入水中，還能聽到響聲嗎？</p> <p> 生活現(xiàn)象：水中的魚能被岸上人的說話和腳步聲嚇走。</p> <p>6、幾種物質(zhì)的聲速：</p> <p> 認(rèn)識(shí)理解，記�。�15℃時(shí)空氣中的聲速為340m/s.</p> <p>三、測(cè)評(píng)與小結(jié)：</p> <p> 1、小訓(xùn)練、小測(cè)試，反饋時(shí)采用師生共同評(píng)講</p> <p> 2、請(qǐng)學(xué)生對(duì)所學(xué)內(nèi)容小結(jié)，養(yǎng)成歸納知識(shí)的習(xí)慣。</p> <p>四、作業(yè) ：</p> <p>課后《動(dòng)手動(dòng)腦學(xué)物理》</p> <p> </p> <p>附：板書設(shè)計(jì) ：</p> <p>第一章聲現(xiàn)象</p> <p>第一節(jié) 聲音的產(chǎn)生與傳播</p> <p>一、聲音的產(chǎn)生：</p> <p>聲音是由物體振動(dòng)產(chǎn)生的。</p> <p>二、聲音的傳播：</p> <p>1、聲音靠介質(zhì)傳播，真空不能傳聲。</p> <p> 介質(zhì)：能夠傳播聲音的物質(zhì)。</p> <p>2、聲音在所有介質(zhì)中都以聲波的形式傳播。</p> <p>3、聲速：</p> <p>（1）聲音在每秒內(nèi)傳播的距離叫聲速。</p> <p>（2）聲音在固體、液體中比在氣體中傳播得快。</p> <p>（3）15℃時(shí)空氣中的聲速為340m/s.</p> <p>物理教案－我們?cè)鯓勇牭铰曇?/p> </div> </div> </div> <div id="y2qj87rulgy2" class="main-right"> <div id="y2qj87rulgy2" class="right_fix"> <script type="text/javascript">s("right_top");</script> <script type="text/javascript">s("right_mid");</script> <div id="y2qj87rulgy2" class="right_box"> <span>最新文章</span> <ul> <li><a href="http://www.stanzs.com/jiaoan/wuli/20080121114740_60647.html" target="_blank" title="第二節(jié) 音調(diào)、響度和音色(1課時(shí)) - 初中物理第二冊(cè)教案">第二節(jié) 音調(diào)、響度和音色(1課時(shí)) - 初中物理第二冊(cè)教案</a></li> <li><a href="http://www.stanzs.com/jiaoan/wuli/20181125163802_1775441.html" target="_blank" title="高中物理《電勢(shì)能》優(yōu)秀教案">高中物理《電勢(shì)能》優(yōu)秀教案</a></li> <li><a target="_blank" title="面試官想聽到這些問題">面試官想聽到這些問題</a></li> <li><a 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