为落实“双减”政策中减负增效的实践作业要求，探索实现数学新课程标准中培养学生创新精神和实践能力的这一重要目标之路，渭南高新区第一小学六年级数学老师结合本学期“圆柱和圆锥”教学内容，设计了“玩转柱锥”为主题的实践作业活动。

活动一：滚一滚

利用滚动法求圆柱的侧面面积，学生通过观察滚动所形成的图形，进一步了解圆柱侧面的特性。

活动二：剪一剪

学生利用现成的圆柱模型，沿着不同方向将侧面剪开，观察比较展开图的异同点，并体验圆柱侧面积、表面积计算公式的推导过程。

活动三：切一切

学生按不同方式将生活中的“圆柱”和“圆锥”切开，探究截面，了解“截面”的产生过程，体会“面源于体”。

活动四：拼一拼

我们能把一个圆采用“化曲为直”的思想方法推导面积计算公式，同样，让学生用转化思想，通过动手实践，推导圆柱体积计算公式。

活动五：做一做

学生在了解了圆柱、圆锥特点之后，制作圆柱与圆锥创意作品，提高学生的实际操作能力，让学生充分参与到“做数学”的活动中。

活动六：画一画

圆柱与圆锥知识点多而杂，但知识点之间不是孤立的，让学生从多维度对圆柱和圆锥的知识点进行整理，找出知识点之间联系，绘制思维导图，编织自己的知识网。

此次实践活动中，同学们不断在做中学，学中思，思中悟，进一步理解了圆柱和圆锥的特征，发现了两者之间的联系和区别，发展了空间想象能力、逻辑推理能力，体会了数学的应用价值，让学生得以跳出课堂，放飞手脑，去探索更广阔的数学世界!

撰稿：冯琳

","gnid":"9cdea4e97775a4804","img_data":[{"flag":2,"img":[{"desc":"","height":"800","title":"","url":"https://p0.ssl.img.360kuai.com/t014ef1fd4cfeddbcd5.jpg","width":"600"},{"desc":"","height":1837,"title":"","url":"https://p0.ssl.img.360kuai.com/t015f6882c433107fcf.jpg","width":1017},{"desc":"","height":"800","title":"","url":"https://p0.ssl.img.360kuai.com/t01ef964ec50583420d.jpg","width":"443"},{"desc":"","height":"800","title":"","url":"https://p0.ssl.img.360kuai.com/t019c67338cbee5e7a0.jpg","width":"600"},{"desc":"","height":"810","title":"","url":"https://p0.ssl.img.360kuai.com/t01cd0df185345e73b4.jpg","width":"1080"},{"desc":"","height":"608","title":"","url":"https://p0.ssl.img.360kuai.com/t01567177219798e2d6.jpg","width":"1080"},{"desc":"","height":"608","title":"","url":"https://p0.ssl.img.360kuai.com/t010f8d7fc99cfadbed.jpg","width":"1080"},{"desc":"","height":"810","title":"","url":"https://p0.ssl.img.360kuai.com/t017983d0ec6142c93d.jpg","width":"1080"},{"desc":"","height":"1280","title":"","url":"https://p0.ssl.img.360kuai.com/t0109143844d5f39a29.jpg","width":"959"},{"desc":"","height":"1279","title":"","url":"https://p0.ssl.img.360kuai.com/t01b6f44f3b4c7cb7af.jpg","width":"959"},{"desc":"","height":"800","title":"","url":"https://p0.ssl.img.360kuai.com/t010c1287b4d2fe5ec5.jpg","width":"600"},{"desc":"","height":"1080","title":"","url":"https://p0.ssl.img.360kuai.com/t01d4c16737536dce51.jpg","width":"1080"},{"desc":"","height":"800","title":"","url":"https://p0.ssl.img.360kuai.com/t0186d470b6eb7dcb56.jpg","width":"513"},{"desc":"","height":"800","title":"","url":"https://p0.ssl.img.360kuai.com/t019589412d32c09e3c.jpg","width":"600"},{"desc":"","height":"800","title":"","url":"https://p0.ssl.img.360kuai.com/t0146a102ea148c4bcb.jpg","width":"600"},{"desc":"","height":"1280","title":"","url":"https://p0.ssl.img.360kuai.com/t01561326c0519a4867.jpg","width":"960"},{"desc":"","height":"643","title":"","url":"https://p0.ssl.img.360kuai.com/t015ff7db0b5aadf68d.jpg","width":"800"},{"desc":"","height":"810","title":"","url":"https://p0.ssl.img.360kuai.com/t0195a6709858169d86.jpg","width":"1080"},{"desc":"","height":"810","title":"","url":"https://p0.ssl.img.360kuai.com/t0104873375f6d839ee.jpg","width":"1080"},{"desc":"","height":"813","title":"","url":"https://p0.ssl.img.360kuai.com/t014b9dbf7090f36f26.jpg","width":"1080"},{"desc":"","height":"602","title":"","url":"https://p0.ssl.img.360kuai.com/t01460693c28680b9f0.jpg","width":"800"},{"desc":"","height":"504","title":"","url":"https://p0.ssl.img.360kuai.com/t0179cb9033a19ba0b7.jpg","width":"800"},{"desc":"","height":"554","title":"","url":"https://p0.ssl.img.360kuai.com/t013881fb4d5a63dd0f.jpg","width":"800"},{"desc":"","height":"557","title":"","url":"https://p0.ssl.img.360kuai.com/t0185a7262c8869d5bd.jpg","width":"800"},{"desc":"","height":"570","title":"","url":"https://p0.ssl.img.360kuai.com/t0136db622720ca3224.jpg","width":"800"},{"desc":"","height":"571","title":"","url":"https://p0.ssl.img.360kuai.com/t017918621b30871258.jpg","width":"800"}]}],"original":0,"pat":"pdc,art_src_3,otherc,fts0,sts0","powerby":"pika","pub_time":1711421280000,"pure":"","rawurl":"http://zm.news.so.com/8607f70f5c83cffef4cf14c4798a9d91","redirect":0,"rptid":"700f989e6d6b1168","rss_ext":[],"s":"t","src":"渭南青年网","tag":[],"title":"渭南高新区第一小学六年级“玩转柱锥”数学实践作业展

康尚育4505圆锥和圆柱侧面展开后是什么图形 -
车试炉19389196703 ______ 【答】 圆锥侧面展平后是扇形(平面) 圆柱侧面展平后是长方形(平面) 如果不展平,则无法确定.

康尚育4505圆锥和圆柱侧面展开后是什么图形是直面,平面,曲面,还是无法确定? -
车试炉19389196703 ______[答案] 【答】 圆锥侧面展平后是扇形(平面) 圆柱侧面展平后是长方形(平面) 如果不展平,则无法确定.

康尚育4505圆柱和圆锥的特点 -
车试炉19389196703 ______ 圆柱是由两个圆形和一个矩形构成;圆锥是由一个扇形和一个圆形构成.底面圆相等的圆柱和圆锥,圆锥是圆柱体积的三分之一.相同:他们的侧面都是一个曲面.不同:圆锥有一个圆形底面.圆柱有两个底面,两个圆形.各个特点:圆柱1、...

康尚育4505 圆柱的侧面展开图是________;圆锥的侧面展开图是________. -
车试炉19389196703 ______[答案] 长方形、扇形

康尚育4505是个大小头锥体的圆柱体 求它的展开图 -
车试炉19389196703 ______[答案] 延伸锥体的两侧母线,得到一交点O.以这点及大小锥体母线(OR O r)为半径画圆.计算圆周长L=πD,圆心角a=D180/OR或者dπ180/Or.在圆上截取角度a Rr的扇形.可以了

康尚育4505在三棱柱,圆柱,圆锥,正方体这四个立体图形中,侧面展开图是长方形的有_____个.看好!是三棱柱! -
车试炉19389196703 ______[答案] 共有3个 侧面展开图是长方形的有圆柱、正方体、三棱柱 (圆锥侧面展开图是一个扇形)

康尚育4505圆柱有______个面组成,这些面相交共得______条线,圆锥的侧面展开图是______. -
车试炉19389196703 ______[答案] 圆柱有 三个面组成,这些面相交共得二条线,圆锥的侧面展开图是扇形. 故答案为:三,二,扇形.

康尚育4505三棱锥、四棱锥、六棱锥、圆柱、圆锥品面展开图. -
车试炉19389196703 ______[答案] 百科一下,必须有.数学书上也有哇

康尚育4505在圆柱,棱柱,球,圆锥,其侧面展开图不是平面图形的是? -
车试炉19389196703 ______[答案] 圆柱的展开图是长方形 棱柱的展开图是多边形 圆锥的展开图是扇形 球的表面是球面,无法展开到平面上

康尚育4505圆柱的侧面展开图是()或()或()等.圆锥有()个底面,都是();圆锥的侧面是个();圆锥的侧面展开图是().圆锥顶点到底面之间的距离是圆锥... -
车试炉19389196703 ______[答案] 圆柱的侧面展开图是(长方形)或(正方形)或(平行四边形)等.圆锥有(一)个底面,都是(圆形);圆锥的侧面是个(曲面);圆锥的侧面展开图是(扇形).圆锥顶点到底面之间的距离是圆锥的(高). 欢迎追问,...