文档介绍：小学数学五年级下册教学反思
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate s errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured26
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
始，让学生体验了线段的旋转；然后再让学生观察并说一说风车的旋转，体验了整个图形的旋转现象。我发现了许多的学生对于线段的旋转会，但是整个图形的旋转还是不清楚，我想学生还不清楚整个三角形旋转90度要先确定每边旋转90度，再连接相应点。画旋转图是本课的难点，学生顾此失彼。注意了旋转角度，忽略了线段的长度不变。在反馈时有学生不能很准确地画出图形，这时候有几个平时爱思考的孩子提出了以下几个好的点子：1、你可以用三角板照着书上的样子把它按顺时针旋转90度，然后再画在书上。2、你可以用手按住书上A点，然后按顺时针旋转书后将看到的图形画到书上。3、记住原来竖着的边旋转后变成了横着的，横着的旋转后变成了竖着的。看着孩子想出的点子，有时感觉他们真的很可爱、很聪明。 
    但不足的地方也很多，在课堂上没有给学生充足的时间去进行小组讨论，可能在其他学生提出点子的时候部分学生没有认真听，导致在课后作业中状况百出。比如说有的学生说一会顺时针一会逆时针弄混了；有的确实没有掌握旋转的方法。但细想想还是在课堂上强调的不够，而我被一时的“盛况”迷晕了，以为所有的孩子都会学的很好，可事实并非如此。这也提醒我，当课堂上新授的内容大部分孩子都表现的积极时，作为教师一定不能将大部分等同于全部，这时一定要提醒自己去关注一下学****能力弱的学生，可能这时他还没有真正掌握新知识，仍处于迷茫状态。
several group number, then with b ± a, =c,c is is methyl b two vertical box betw