六年级数学下册1.1《面的旋转》课件1北师大版.ppt

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点动成线,线动成面,面动成体,旋转后会得到哪个图形?,想一想,连一连。,圆柱,圆台,球,圆锥,操作活动:,准备两块橡皮泥,捏成圆柱和圆锥;用看、滚、剪、切等多种方式探索圆柱和圆锥的特征。,1.上面一排图形旋转后会得到下面的哪个图形?,2.找一找下面图中的圆柱或圆锥,说说圆柱和圆锥有什么特点。,底面,底面,侧面,o,o,高,底面,o,高,侧面,3.下面图形中哪些是圆柱或圆锥?在括号里写出名称,并标出底面直径和高。,( ),( ),( ),( ),4.找一个圆柱形和一个圆锥形的物体,分别指出它们的底面和侧面,并测量出着两个物体的高。,5.某种饮料罐的形状为圆柱形,底面直径为6.5cm,高为11cm。将24罐这种饮料按如图所示的方式放入箱内,这个箱子内部的长、宽、高至少是多少?,长:6.5639(cm),宽:6.5426(cm),高:11cm,6.如图,把下面的立体图形切开,想一想切开后的面分别是什么形状,连一连。,“神州”号飞船有返回舱、轨道舱和推进舱。其中,轨道舱的外形为两端带有锥形的圆柱形。,

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