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教学难点：
正确分辨or在词中的两种不同发音，准确读写出含有or字母组合的单词。
教学过程
活动1【导入】创设情境
T: Do you like the story of 《 Journey to the West》? The dragon horse ran to us. Tang Seng was caught by the demon. Wu Kong, Ba Jie and Sha Seng are worried. They heard that you are helpful. They asked us for help. Can you help them? Listen to the learning objectives（营救密码）：
1.发现单词中，字母组合or的发音规则。
2.运用规则能读出符合or发音规则的单词。
3.根据读音拼写含有or字母组合的单词。
T: Read the learning objectives by yourself. Remember the code.
（设计意图：创设情境,创编唐僧被抓，悟空、沙僧和八戒非常担心师傅，想求助乐于助人的四年二班同学一起救师傅的故事情节，将学习目标以营救密码的说法出现，激起学生学习的兴奋点。）
活动2【讲授】呈现四个例词
1. Lead to the“horse”.
T: What can they do? Look, the dragon horse ran to us. Read after me “or /?:/ , /?:/ /?:/ horse”.
Put on the picture and the word card. Show the gesture or /?:/. Read the word one by one. Then read together.
2. Lead to the“fork”.
T: What did Ba Jie find? Oh, he found new arms”fork”.(Do action.)
Read after me “or /?:/ , /?:/ /?:/ fork”. Put on the picture and the word card. Show the gesture or /?:/. Read the word one by one.
3. Lead to the“homework”.
T: Sha Seng did homework. Tang Seng arranged. Read after me “or /?:/
, /?:/ /?:/ homework”.
Put on the picture and the word card. Show the gesture or /?:/. Read the word one by one.
4. Lead to the“world map”.
T: Guess: What did Wu Kong find? He found the world map. It’s useful for us. Maybe we will find Tang Seng from it.
Read after me “or /?:/ , /?:/ /?:/ homework”.
Put on the picture and the word card. Show the gesture or /?:/. Read the word one by one.
（设计意图：将四个例词与故事中的角色链接，自然引出四个例词，在师生不同形式的读中感知or 的不同发音。）
活动3【探究】探究字母组合or的发音规则
T: Look at the letters “or”. Where are they? Where are they? What rules can you find? What rules can you find? Think it over, and discuss it in your group.
Report the rules by the group leaders.
屏幕呈现学生的发现：