數(shù)學北師大版三年級下冊《平移和旋轉(zhuǎn)》教學課件說課講解

平移和旋轉(zhuǎn)沙金九年一貫制學校宋振軍Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.教學目標1.通過觀察生活情景，讓同學們初步認識生活中的平移和旋轉(zhuǎn)現(xiàn)象，初步了解平移和旋轉(zhuǎn)的特點。2.能判斷圖形在方格紙上平移的方向和格數(shù)；能在方格紙上將圖形按指定方向和格數(shù)平移。3.通過具體的學習和探索活動，培養(yǎng)同學們的觀察能力和空間想象能力。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.只要物體或圖形沿著直線移動，就是平移。上下移動前后移動電梯、纜車的運動是平移。你還見過哪些平移現(xiàn)象？Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.看一看Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.風扇葉片、螺旋槳和鐘的指針的運動都是旋轉(zhuǎn)。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.摩天輪旋轉(zhuǎn)木馬旋轉(zhuǎn)：物體圍繞一個點或一個軸作圓周運動。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.旋轉(zhuǎn)的風車生活中你還見過哪些旋轉(zhuǎn)的現(xiàn)象？Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.平移Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.江蘇省電化教育館制作旋轉(zhuǎn)Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.平移旋轉(zhuǎn)纜車滑梯小火車風車摩天輪轉(zhuǎn)椅蕩秋千Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.生活中的平移和旋轉(zhuǎn)生活中的平移和旋轉(zhuǎn)Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.生活中的平移和旋轉(zhuǎn)Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.生活中的平移和旋轉(zhuǎn)Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.生活中的平移和旋轉(zhuǎn)Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.生活中的平移和旋轉(zhuǎn)Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.物體的運動是平移的畫“”，是旋轉(zhuǎn)的畫“”?！嬕划婨valuationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.哪些物體的運動是平移的，哪些是旋轉(zhuǎn)的說一說Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.1.像滑梯、電梯、纜車、火車這樣的運動，在數(shù)學里我們叫它平移。2.像風車、扇子、螺旋槳、鐘表這樣的運動，在數(shù)學里我們叫它旋轉(zhuǎn)。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.用手勢模仿所看到的物體的運動，小組交流發(fā)言。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.填空：把抽屜拉出來是屬于（）運動。國旗從旗桿下部慢慢地升上去是（）現(xiàn)象。車輪的滾動屬于（）現(xiàn)象。風車的轉(zhuǎn)動屬于（）運動。平移平移旋轉(zhuǎn)旋轉(zhuǎn)Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.智力風帆Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.金魚圖向（）平移了（）格Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.金魚圖向（）平移了（）格①①Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.金魚圖向（）平移了（）格②②Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.金魚圖向（）平移了（）格③③Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.金魚圖向（）平移了（）格①①③③②②左7Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.火箭圖向（）平移了（）格上4Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.小房圖向（）平移了（）格下5Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.向上平移5格Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.向上平移5格向右平移7格Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.向上平移5格向右平移7格向___平移___格向___平移___格下左56Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.平移和旋轉(zhuǎn)金魚圖向（）平移了（）格。火箭圖向（）平移了（）格。小房圖向右平移了6格。左7上5Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.試一試1畫出三角形向右平移6個后的圖形。2畫出平行四邊形向下平移5格后的圖形。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.把船向右平移4格后得到的圖形涂上顏色。小魚向()平移了()格。右8Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePtyLtd.

下面哪些魚可以通過平移與紅色小魚重合，把它們涂上顏色。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile.Copyright2004-2011AsposePty