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梁唯鲍4763二年级角的初步认识可以渗透哪些数学思想 -
人陆彭18797858299 ______ 直线,相交,锐角,钝角,直角.对角,邻角,补角,割角,内角,外角 两点确定直线,对称,平分,等等,这完全取决于学生的吸收能力.

梁唯鲍4763二年级数学锐角,直角,钝角怎么认识 -
人陆彭18797858299 ______[答案] 锐角小于90°,直角等于90°,钝角大于90°,哈哈,十几年了我居然还记得

梁唯鲍4763小学数学1对1:角的大小与什么有关(小学二年级 -
人陆彭18797858299 ______ 角的大小与边的长短无关,与角叉开的大小有关.

梁唯鲍4763有一个长方形去掉一个角之后剩下的图形有几个角?一共有几种可能? -
人陆彭18797858299 ______ 一共有3种可能: 从一个角开始,剪对角线或多于对角线,3 个. 从一个角开始,剪少于对角线,成直角梯形,4个. 从相邻两边剪去一个角,5个. 二年级数学思维训练1 1、有12个小朋友一起玩“猫捉老鼠”的游戏, 已经捉住了7人,还要捉...

梁唯鲍4763小学数学角多一条线段多出几个角,它的规律是什么如何给你个二年级的孩子讲 -
人陆彭18797858299 ______ 加一条边,角数=边数—1

梁唯鲍4763给二年级学生上认识角一课时,学生感知角的顶点是尖尖的 ,我给予了肯定但有人说我讲错了我错了吗? -
人陆彭18797858299 ______ 因材施教,我们最早认识角,都是感觉尖尖的,二年级的小孩可以.如果有人说你讲错了,你可以告诉他,二年级学生需要的是理解数学概念

梁唯鲍4763小学二年级数学题,角是有大小的,角的大小和边的( )有关,和边的(小学二年级数学题,角是有大小的,角的大小和边的( )有关,和边的( )无关 -
人陆彭18797858299 ______[答案] 角是有大小的,角的大小和边的( 开口大小)有关,和边的(长短 )无关

梁唯鲍4763二年级数学角的知识 -
人陆彭18797858299 ______[答案] 锐角,直角,钝角. 锐角:大于0度,小于 90° 直角:等于90° 钝角:大于90°,小于180°

梁唯鲍4763下面图形中有几个角?图一,一个三角形,它的底边上还有条高.图二,两个三角形,象8的形状.为什么?小学数学西师版二年级上册第二单元《角的初步认识... -
人陆彭18797858299 ______[答案] 图一 我认为 有11个角,图二有16个角,图是按你说的画的