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class="excellent_star">推薦度：<i></i></span> </a></li> <li id="xhhfjdvbzhp" class="excellent_articles_title">相關(guān)推薦</li> </ul> </div> <p>我們?cè)鯓勇牭铰曇?/p> <p align=left><br /> <br /><br /><youyang_cms_code:news:news_info> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; mso-line-height-rule: exactly"><b>課題</b>：我們?cè)鯓勇牭铰曇??xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; mso-line-height-rule: exactly"><b>課時(shí)</b>：1課時(shí)<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt 70.25pt; text-indent: -70.25pt; line-height: 18pt; mso-char-indent-count: -5.0; mso-line-height-rule: exactly"><b>知識(shí)與技能</b>：<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 28pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">（1）了解人類聽到聲音的過程；<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt 62.95pt; text-indent: -35pt; line-height: 18pt; mso-char-indent-count: -2.5; mso-line-height-rule: exactly; mso-para-margin-left: 2.66gd">（2）知道骨傳導(dǎo)的原理；<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 28pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">（3）了解雙耳效應(yīng)及其應(yīng)用。<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; mso-line-height-rule: exactly"><b>過程與方法</b>：<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 28pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">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。<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; mso-line-height-rule: exactly"><b>情感態(tài)度與價(jià)值觀</b>：<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 28pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">學(xué)會(huì)關(guān)心他人，特別是關(guān)心殘疾人。<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; mso-line-height-rule: exactly"><b>教學(xué)重點(diǎn)</b>：<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 56pt; line-height: 18pt; mso-char-indent-count: 4.0; mso-line-height-rule: exactly">1、<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 56pt; line-height: 18pt; mso-char-indent-count: 4.0; mso-line-height-rule: exactly">2、<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 56pt; line-height: 18pt; mso-char-indent-count: 4.0; mso-line-height-rule: exactly">3、<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; mso-line-height-rule: exactly"><b>教學(xué)難點(diǎn)</b>：<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 56pt; line-height: 18pt; mso-char-indent-count: 4.0; mso-line-height-rule: exactly"><o:p> </o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt 28.1pt; text-indent: -28.1pt; line-height: 18pt; mso-char-indent-count: -2.0; mso-line-height-rule: exactly"><b>教具</b>：<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt 55.95pt; text-indent: -28pt; line-height: 18pt; mso-char-indent-count: -2.0; mso-line-height-rule: exactly; mso-para-margin-left: 2.66gd">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；<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt 27.95pt; text-indent: 28pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly; mso-para-margin-left: 2.66gd">音叉、用細(xì)線懸掛著的泡沫塑料球；<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt 27.95pt; text-indent: 28pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly; mso-para-margin-left: 2.66gd">根據(jù)情況：電視機(jī)、影蝶機(jī)、VCD光盤（可視情況而定）<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt 27.95pt; text-indent: 28pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly; mso-para-margin-left: 2.66gd">銅鑼、盛有水的玻璃水槽；<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 28pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">學(xué)生：橡皮筋、小鼓、薄鋼尺、其他一些能發(fā)聲的物體。<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; mso-line-height-rule: exactly"><b>課前活動(dòng)：<o:p></o:p></b></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 28pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">在教室內(nèi)放的音樂————?jiǎng)?chuàng)設(shè)情境<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; mso-line-height-rule: exactly"><b>導(dǎo)入新課</b>：<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt 286.95pt; text-indent: -259pt; line-height: 18pt; mso-char-indent-count: -18.5; mso-line-height-rule: exactly; mso-para-margin-left: 2.66gd">列舉自然界中豐富多彩的聲音—————耳濡目染，感性認(rèn)識(shí)， <o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 28pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">實(shí)例，提出一系列一聲現(xiàn)象有激發(fā)興趣。<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 28pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">關(guān)的問題，由此導(dǎo)入新課。<o:p></o:p></p> <p class=msobodytextindent style="margin: 0cm 0cm 0pt; text-indent: 0cm; line-height: 18pt; mso-char-indent-count: 0; mso-line-height-rule: exactly"><b>進(jìn)行新課</b>：<o:p></o:p></p> <p class=msobodytextindent style="margin: 0cm 0cm 0pt; text-indent: 0cm; line-height: 18pt; mso-char-indent-count: 0; mso-line-height-rule: exactly">一、聲音的產(chǎn)生：<o:p></o:p></p> <p class=msobodytextindent style="margin: 0cm 0cm 0pt; text-indent: 28pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">1、指導(dǎo)看圖，同時(shí)播放音像 ——— 聲情并茂<o:p></o:p></p> <p class=msobodytextindent style="margin: 0cm 0cm 0pt; text-indent: 28pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">2、歸納共同點(diǎn)引出探究內(nèi)容： ——— 培養(yǎng)歸納、概括能力<o:p></o:p></p> <p class=msobodytextindent style="margin: 0cm 0cm 0pt 321.95pt; text-indent: -294pt; line-height: 18pt; mso-char-indent-count: -21.0; mso-line-height-rule: exactly; mso-para-margin-left: 2.66gd">3、學(xué)生探究：聲音是怎樣產(chǎn)生的？（音叉、橡皮筋、桌子、<o:p></o:p></p> <p class=msobodytextindent style="margin: 0cm 0cm 0pt 97.75pt; text-indent: 126pt; line-height: 18pt; mso-char-indent-count: 9.0; mso-line-height-rule: exactly; mso-para-margin-left: 9.31gd">鋼尺、聲帶、小鼓、小鑼等）<o:p></o:p></p> <p class=msobodytextindent style="margin: 0cm 0cm 0pt; text-indent: 42pt; line-height: 18pt; mso-char-indent-count: 3.0; mso-line-height-rule: exactly">①明確實(shí)驗(yàn)的目的、實(shí)驗(yàn)方法，<o:p></o:p></p> <p class=msobodytextindent style="margin: 0cm 0cm 0pt 42pt; text-indent: 0cm; line-height: 18pt; mso-char-indent-count: 0; mso-line-height-rule: exactly; mso-para-margin-left: 4.0gd">②注重實(shí)驗(yàn)過程中的各種現(xiàn)象，并能歸納表達(dá)<o:p></o:p></p> <p class=msobodytextindent style="margin: 0cm 0cm 0pt; text-indent: 42pt; line-height: 18pt; mso-char-indent-count: 3.0; mso-line-height-rule: exactly">③觀察思考、討論作答、舉手發(fā)言<o:p></o:p></p> <p class=msobodytextindent style="margin: 0cm 0cm 0pt; text-indent: 28pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">4、引導(dǎo)探究的方法：<o:p></o:p></p> <p class=msobodytextindent style="margin: 0cm 0cm 0pt; text-indent: 70pt; line-height: 18pt; mso-char-indent-count: 5.0; mso-line-height-rule: exactly">提出問題→進(jìn)行假設(shè)、猜想→探究實(shí)驗(yàn)→歸納結(jié)論<o:p></o:p></p> <p class=msobodytextindent style="margin: 0cm 0cm 0pt; text-indent: 0cm; line-height: 18pt; mso-char-indent-count: 0; mso-line-height-rule: exactly">二、聲音的傳播：<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt 27.85pt; text-indent: -14pt; line-height: 18pt; mso-char-indent-count: -1.0; mso-line-height-rule: exactly; mso-para-margin-left: 1.32gd"> 1、探究：桌子傳聲 ————— 固體能夠傳聲<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 29.25pt; line-height: 18pt; mso-line-height-rule: exactly">2、空氣傳聲：聽到飛機(jī)和響聲<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 29.25pt; line-height: 18pt; mso-line-height-rule: exactly">3、“真空鈴”演示：——— 實(shí)驗(yàn)推理：“假如沒有空氣”呢？<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 29.25pt; line-height: 18pt; mso-line-height-rule: exactly">4、播放錄像“振動(dòng)的音叉激起的聲波傳入人耳”<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 43.1pt; line-height: 18pt; mso-char-indent-count: 3.08; mso-line-height-rule: exactly">指導(dǎo)學(xué)生自學(xué)“想想議議”<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 28.5pt; line-height: 18pt; mso-line-height-rule: exactly">5、演示：液體傳聲<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 28.5pt; line-height: 18pt; mso-line-height-rule: exactly"> 將發(fā)聲的門鈴放入水中，還能聽到響聲嗎？<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 28.5pt; line-height: 18pt; mso-line-height-rule: exactly"> 生活現(xiàn)象：水中的魚能被岸上人的說話和腳步聲嚇走。<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 28.5pt; line-height: 18pt; mso-line-height-rule: exactly">6、幾種物質(zhì)的聲速：<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 28.5pt; line-height: 18pt; mso-line-height-rule: exactly"> 認(rèn)識(shí)理解，記�。�<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:chmetcnv w:st="on" tcsc="0" numbertype="1" negative="false" hasspace="false" sourcevalue="15" unitname="℃">15℃</st1:chmetcnv>時(shí)空氣中的聲速為<st1:chmetcnv w:st="on" tcsc="0" numbertype="1" negative="false" hasspace="false" sourcevalue="340" unitname="m">340m</st1:chmetcnv>/s.<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; mso-line-height-rule: exactly">三、測(cè)評(píng)與小結(jié)：<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 14.05pt; line-height: 18pt; mso-char-indent-count: 1.0; mso-line-height-rule: exactly"><b> </b>1、小訓(xùn)練、小測(cè)試，反饋時(shí)采用師生共同評(píng)講<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 14pt; line-height: 18pt; mso-char-indent-count: 1.0; mso-line-height-rule: exactly"> 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。<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; mso-line-height-rule: exactly">四、作業(yè)：<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 42.4pt; line-height: 18pt; mso-char-indent-count: 3.03; mso-line-height-rule: exactly">課后《動(dòng)手動(dòng)腦學(xué)物理》<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; mso-line-height-rule: exactly"><b><o:p> </o:p></b></p> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; mso-line-height-rule: exactly"><b>附：板書設(shè)計(jì)</b>：<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; text-align: center; mso-line-height-rule: exactly" align=center>第一章聲現(xiàn)象<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; text-align: center; mso-line-height-rule: exactly" align=center>第一節(jié) 聲音的產(chǎn)生與傳播<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; mso-line-height-rule: exactly">一、聲音的產(chǎn)生：<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 32pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">聲音是由物體振動(dòng)產(chǎn)生的。<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; line-height: 18pt; mso-line-height-rule: exactly">二、聲音的傳播：<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 31.5pt; line-height: 18pt; mso-line-height-rule: exactly">1、聲音靠介質(zhì)傳播，真空不能傳聲。<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 31.5pt; line-height: 18pt; mso-line-height-rule: exactly"> 介質(zhì)：能夠傳播聲音的物質(zhì)。<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 31.5pt; line-height: 18pt; mso-line-height-rule: exactly">2、聲音在所有介質(zhì)中都以聲波的形式傳播。<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 31.5pt; line-height: 18pt; mso-line-height-rule: exactly">3、聲速：<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 32pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">（1）聲音在每秒內(nèi)傳播的距離叫聲速。<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 32pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">（2）聲音在固體、液體中比在氣體中傳播得快。<o:p></o:p></p> <p class=msonormal style="margin: 0cm 0cm 0pt; text-indent: 32pt; line-height: 18pt; mso-char-indent-count: 2.0; mso-line-height-rule: exactly">（3）<st1:chmetcnv w:st="on" tcsc="0" 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