K---Counting from 20 to 50
本课学习内容：
1.学习数字20-50的概念
2.利用数学思维去解决问题
3.建立数与物的对应关系
本课关键词句：
suitcase，plane，switch，machine，stack，order，position，marshmallow，tray，seesaw，hungry
Can you count from twenty to fifty? Twenty, Twenty-one, Twenty-two, ... , Forty-nine, Fifty.
课后语音
Today is Tuesday.
We learned numbers from 20 to 50.
Q: Where is Professor?
A: Professor is at the airport.
Q: How many suitcases are there?
A: There are 20 suitcases.
one suitcase, two suitcases, three suitcases, four suitcases, five suitcases, six suitcases, seven suitcases, eight suitcases, nine suitcases, ten suitcases, eleven suitcases, twelve suitcases, thirteen suitcases, fourteen suitcases, fifteen suitcases, sixteen suitcases, seventeen suitcases, eighteen suitcases, nineteen suitcases, twenty suitcases.
A: Twenty and three more is twenty-three.
A: Twenty and ten more is thirty.
A: Thirty and five more is thirty-five.
A: Thirty and ten more is forty.
A: Forty and ten more is fifty.
Q: Can you count from twenty to fifty?
A: Twenty, twenty-one, twenty-two, twenty-three, ……fifty.
本课作业：
1.回答课后语音问题；
2.完成Take-Home Fun Book第二册第13页，分别数一数A、B、C、D框内对应的方块数量，找到正确的单词并填写在空格内（答案见96页）: