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基本功比赛之教学设计（上）基本功比赛之教学设计（上）
按：今天参加数学教师基本功比赛，从上午10:40开始坐进无网络环境的计算机教室备课，到下午2:40截止，完成指定教学内容的教学设计、课件制作、教具准备。下午2:40至3:00，从所准备的四十分钟的教学设计中选择一个片段，进行20分钟的课堂教学。我指定备课的内容是二年级下册的《两位数乘一位数》。工作至今，唯独二年级从未教过，偏偏今天在比赛的时候，被要求备一节二年级的数学课，还真有点造化弄人的味道啊！无奈，只有硬着头皮课，又从中选择了一个片段进行执教。自己拿捏不准，所以特意将堪称处女作的教学设计贴出来，供大家围观，请各位看到此教学设计的同仁多多指教，多多切磋！
【背景】
二年级学生已经能熟练口算表内乘除法，会口算和笔算一位数乘两位数，能解决“求一个数的几倍是多少”的实际问题。
请为二年级学生设计符合下列学习目标、教学时长不超过20分钟的教学，并以此进行课堂教学。
【学习目标一】
会能算“两位数乘一位数”，并能运用自己的方法检验计算结果。
【教学设计】
教学重难点：；理解两位数乘一位数的算理。
教学过程：
1．口算
3×7= 40×6= 8×9=
12÷3= 35÷7= 64÷8=
2．笔算一位数乘两位数
3×21= 6×15=
计算对不对呢？自己检验一下吧！
先独立思考，再同座位交流一下自己的想法，最后全班集中反馈。
【通过这个环节的教学，使学生体会到检验的重要性，并逐渐养成自觉检验的习惯。】
3．解决问题
（1）车上有5位男乘客，女乘客的人数是男乘客的2倍。女乘客有多少人？
口答算式并且口算得数，教师板书。
（2）车上有15位男乘客，女乘客的人数是男乘客的2倍。女乘客有多少人？
口答算式，笔算得数，教师板书。
比一比，这两题什么相同，什么不同？
通过比较，使学生明确要求一个数的几倍是多少用乘法计算。
【及时比较异同，整理并且小结相关的方法，完成数学建模的过程，进行数学思想方法的渗透。】
环环紧扣，把我重点。
还很不足啊，请多指教！
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