【六】教学时间安排
一、时、分、秒(3课时)
秒的认识.............................................................................................1课时
时间的计算..........................................................................................1课时
练习一................................................................................................1课时
二、万以内的加法和减法(一)(5课时)
两位数加两位数....................................................................................1课时
两位数减两位数....................................................................................1课时
笔算几百几十加、减几百几十..................................................................1课时
加、减法的估算....................................................................................1课时
整理和复习..........................................................................................1课时
三、 测量(6课时)
毫米、分米的认识.................................................................................2课时
千米的认识..........................................................................................2课时
吨的认识.............................................................................................2课时
四、 万以内的加法和减法(二)(6课时)
加法................................................................................................2课时
减法................................................................................................3课时
整理和复习..........................................................................................1课时
五、倍的认识(3课时)
倍的认识.............................................................................................1课时
解决问题.............................................................................................2课时
六、多位数乘一位数(11课时)
口算乘法..........................................................................................1课时
笔算乘法..........................................................................................8课时
整理和复习..........................................................................................1课时
数字编码.............................................................................................1课时
七、 长方形和正方形(3课时)
四边形................................................................................................1课时
周长...................................................................................................1课时