老师：Hello children. I'm ice. Glad to see you again. Today we will continue learning Unit 6. I have 50 markers. In this lesson, we will reveal Lesson 19, Lesson 20 and Lesson 21. Also, we will do some interesting activities. Hope you can enjoy the class. Ready? Here we go. At first, let's review. There are 3 lessons in this unit.
老师：Lesson 19, I have 50 markers. We talked about boring things. Lesson 20, I collect rulers. We talked about collections. And Lesson 21, number games. We did some number games with Lala and the children. Let's look at Lesson 19. How can we ask and answer about boring things, right? We say, may I borrow, please? For example, may I borrow your roller, please. May I borrow your books, please? And so on. How can we answer? Good?
老师：We could say, here you are, or certainly here you are. Sure. Here you are. And so on. Let's look at Lesson 20. I collect rulers. Look, the children are talking about their collections. What do they say? Yes, they say, what do you collect? I collect. I have.
老师：Now let's chant. We can use the words on the right. For example, what do you collect? I collect rulers. I have thirty. Are you ready? Go. Number one. Ready, go. What do you collect? I collect rulers. I have thirty. Number two, ready? Go. What do you collect? What do you collect?
老师：I collect. Quiz. I have forty. Number three. Ready? Double. What do you collect? What do you collect? I collect cars. I have 50. Key number four. Ready? Go. What do you collect? What do you collect? I collect stickers. I have 60. Wow, silver. Now let's look at Lesson 21. The children played number games in this lesson. Look at the blackboard. Can you get the missing numbers? The first one right. The missing numbers are 70 and eighty because 50+10 is sixty. The second one right. The missing numbers are 80 and seventy because 100 minus ten is ninety.
老师：Good job, boys and girls. Let's play another number game. Do you know the numbers? Let's listen and take. Please open your book and turn to page 48. Are you ready? Let's go.
学生：Listen and tick. Number one. What do you collect? I collect stickers. I have fifty. Number two, may I borrow your eraser? Certainly. I collect erasers. I have sixteen.
老师：Let's look at number one. Which number do you hear right? This one. Because the mindset. What do you collect? I collect stickers. I have fifty. The first number is fifteen. The second one is fifty. Now let's look at number two. Which number do you hear right? The second one. Because the man says, may I borrow your eraser? Thirdly, I collect erasers. I have sixteen. The first number is sixty. The second. the one is sixteen have you got the right answers great look at these numbers can you find the rules？
老师：同学们，你找到这些数字的拼写规律了吗？是的，在 11- 19 的数字中，除了 11 和 12 之外，其他的都是以
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