妙，不仅在chant的学习中自然而然的引出，更是利用这个单词引申出另一种含义，即幸福快乐应一起分享,适时渗透情感教育。）

Step 2. 游戏导入，引发学生思考。

1. T：Let's play a game: Can you guess?（Show a box)

　T: I have a beautiful box.There are some things in it. They can eat.What are they? Can you guess?

Ss say one by one.

T: Yes, you are right. They are sweets. How many? Do you know? Let's count together: One, two, three...Yes, there are forty. Now this class we'll learn the new lesson: There are forty. (板书)并呈现出本节课学习任务（Task:Let's make a survey of families.）这节课我们的任务是要进行家庭人口调查，看看大家家里都有几口人。How many people are there in your family?

（设计意图：通过猜糖果的游戏，激发学生学习的好奇心和求知欲，活跃课堂气氛。通过数糖果，引导学生积极地投入到数数中，并随着糖果数量的增加，复习数字单词，自然引出本课课题，呈现本节课学习任务。）

Step 3. 课堂合作，练习收获！

1. Listen and answer the question: (Two times. First only listen, then look and listen.)

Question: How many pupils are there in Lingling's class?

Answer: There are forty. （Talk in groups.）

（设计意图：此环节重点培养学生的听力水平和对数字的敏感度。在学习课文之前，让学生带着问题去听课文，给学生以"任务"，培养学生思考问题的能力和积极学习的态度。）

2. Listen and repeat.

（设计意图：此环节听音跟读，训练学生的听音、模仿能力。）

3. Read and understand, then group work and act out.(小组合作、互帮互助)

4. Compare the words, try to read.

　ten twenty

thirteen 13------thirty 30

fourteen 14-------forty 40

fifteen 15---------fifty 50