（Read in groups，T says：three，S s say：thirteen全部读，个别读）

5.16+1=17 17+1=18 18+1=19（导入 senventeen，eithteen，nineteen）[明1]

6.Game：

①（算一算）15+1 13+5 18+1 12+4 9+8

②数一数狗有多少只腿

T:There are lots of animals in the world，Most animals have legs now，one dog has four legs，two dogs have eight legs

Eg：T:two dogs，S:eight legs

T:three dogs S：twelve legs

Step3 Dills&practice

1.Show students the PPT，use "there are/is"to describe the pictures[明2]

2.show the crayons：how many crayons are there？let's count（lead in crayon）

show studens the PPT: There are only nineteen crayons，but there are twenty children in the class（此处板书）

Step4 Learn the text

① Watch the cartoon with questions:

Q1：What did Ms Smart buy yesterday？

Q2：How many crayons did Ms Smart buy yesterday？

Q3：How many children are there in the classroom？

Q4：Did Ms Smart lose a crayon？

② Watch again and repeat two times

③Role play next class. 　　采用课堂质疑方式，让学生通过做算术题很快掌握13到19的拼写及读音

Step5 Consolidation

　　 Let's sing the song：（用学过的歌曲 How many do you want？的曲调）

How many crayons? How many books?how many can you see? Thirteen or fourteen, fifteen or sixteen? There are only nineteen crayons. How many pens? How many pencils? how many can you[明3] Steps6 Homework

：1. Copy the new words

2. Read the text for 5 times and

小练笔 ：

用本课所学的数字介绍自己的家庭实际情况，进一步巩固本课

课件展示数学算式的结果单不同的是用英语单词得出结果。

课件展示动物，并以倍数出现让学生脑中快速闪现十几的英文表达法。

这是一个简单的律动，让学生跟随音乐节奏快乐的动起来并把数字13到19的读音烂熟于心。