作组合体三视图的步骤
作者:值友5978884058
五年级下册数学思维导图来喽!随着学习的深入,五年级下册数学的知识点逐渐增多,为了更好地掌握这些知识,我们需要一种有效的学习方法来梳理和记忆。思维导图作为一种可视化学习工具,可以帮助我们系统地整理数学知识,形成清晰的知识体系。给大家带来了五年级下册数学思维导图,通过思维导图的引导,相信您能够更好地掌握五年级下册数学的核心知识点,提高学习效率。
![](https://p0.ssl.img.360kuai.com/t010a84be4f44a5fc98.jpg)
第一单元:观察物体(三)
这个单元涉及的知识点主要有两个部分。一是从多个方向观察立体图形,并能够还原出相应的几何组合体。这部分主要通过观察和想象,培养学生的空间观念和推理能力。二是通过三视图来描述立体图形,即从正面、左面和上面三个不同的方向观察同一组物体,并画出相应的图形。
![](https://p0.ssl.img.360kuai.com/t016abeb0610b989b06.jpg)
第二单元:因数和倍数
这一单元主要涉及整数的基本性质和关系
![](https://p0.ssl.img.360kuai.com/t01ca6f5551111b18b7.jpg)
因数和倍数
![](https://p0.ssl.img.360kuai.com/t01fca10c43fe13e4c8.jpg)
奇数和偶数
![](https://p0.ssl.img.360kuai.com/t0169ec483a407bf03a.jpg)
质数和合数
![](https://p0.ssl.img.360kuai.com/t010681d75145d7c2e7.jpg)
公因数、最大公因数
![](https://p0.ssl.img.360kuai.com/t01cf5290bfcfea4af9.jpg)
互质
![](https://p0.ssl.img.360kuai.com/t01263232ac00be93ba.jpg)
公倍数、最小公倍数
![](https://p0.ssl.img.360kuai.com/t018ae244ce72e4c3af.jpg)
第三单元:长方体和正方体
在学习这个单元时,学生需要掌握长方体和正方体的基本特征,理解表面积和体积的概念,并能够运用公式进行计算。同时,学生还需要通过实际操作和观察,培养空间想象能力和实践能力。
![](https://p0.ssl.img.360kuai.com/t01deb4e8d4fa42a9bc.jpg)
定义
长方体的特征
![](https://p0.ssl.img.360kuai.com/t0133e5f7107e1c30bd.jpg)
正方体的特征
![](https://p0.ssl.img.360kuai.com/t01e33744d0cb78b4ad.jpg)
计算
![](https://p0.ssl.img.360kuai.com/t0140d4c3cca3c19f0a.jpg)
第四单元:分数的意义和性质
这一单元主要涉及到分数的概念、性质以及分数的运算等内容。通过这一单元的学习,学生将建立起对分数的基本认识和理解,掌握分数的性质和运算方法,为后续的学习打下坚实的基础。
![](https://p0.ssl.img.360kuai.com/t01da4079116b5c25e7.jpg)
分数和小数的互化
![](https://p0.ssl.img.360kuai.com/t01812cbe11490baa55.jpg)
第五单元:图形的运动(三)
本单元的目标是让学生进一步认识图形的旋转,明确旋转三要素,并能够运用数学语言描述旋转运动的过程。
![](https://p0.ssl.img.360kuai.com/t01cd77cbe9c22774cd.jpg)
轴对称
![](https://p0.ssl.img.360kuai.com/t0140c38b1d388f1651.jpg)
旋转
![](https://p0.ssl.img.360kuai.com/t01035642ccc118cca6.jpg)
第六单元:分数的加法和减法
学生将学习如何将同分母分数相加和相减,理解同分母分数加减法的意义和方法。同时,学生还将学习如何计算异分母分数的加法和减法,掌握通分和约分的技巧,理解异分母分数加减法的意义和方法。
![](https://p0.ssl.img.360kuai.com/t013eb8c85c1fb54f74.jpg)
第七单元:折线统计图
![](https://p0.ssl.img.360kuai.com/t016b363e6a360f1c86.jpg)
第八单元:统计与数学广角
![](https://p0.ssl.img.360kuai.com/t016037b98483ee90ca.jpg)
以上是五年级下册数学思维导图,通过思维导图的引导,五年级下册数学的各单元知识将更加清晰地呈现在你的眼前。有需要的家长感觉收藏,需要源文件也可以去知犀思维导图领取哦!
关键词:五年级下册数学思维导图,五年级下册数学,思维导图
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须侧服3037螺栓是棱柱和圆柱的组合体如图,画出它的三视图. -
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须侧服3037论述组合体尺寸的组成 -
訾娣珠15528999530 ______ 组合体的组合形式有叠加、切割、综合三种情况.组合体:由若干个基本几何体按一定的位置经过叠加或切割组成的物体.各形体之间的表面连接关系分为:不公面、共面、相切和相交四种情况.分析组合体用形体分析法——假想把组合体分解...
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訾娣珠15528999530 ______[答案] 如图所示:
须侧服3037机械制图标注尺寸画组合体的三视图(1:1),并标注尺寸三视图画
訾娣珠15528999530 ______ 这个要看你画图的目的.一般画图的目的是为了加工,这样以加工人便于看清楚为原则,按照加工工序来标注,以那个圆孔为例,可以在主视图上标,包括孔的位置尺寸和孔径尺寸,这样工艺员或者加工人员一下就可以看清楚孔是怎么定位和怎么加工了;以底座尺寸为例,可以在俯视图上标一下它的尺寸,因为在俯视图上可以一下标清楚底座上那个平面的形状,不需要在别的视图上补充标注了.标注尺寸首先自己能看清楚,然后注意第一是不要漏尺寸,第二才是便于看,工艺员或者加工人员一般按照加工工序来看尺寸的.